Portfolio
Case Studies
200+ projects across fintech, healthcare, e-commerce, blockchain, AI, and enterprise. Real work. Real results.
200+
Projects delivered
15+
Countries
65+
Engineers
10+
Years
Core
Custom Software Development
Street Beat — Mobile App for Sneaker Retail Chain (Flutter)
Ongoing development and maintenance of the Flutter-based mobile application for Street Beat, a leading Russian sneaker and casual footwear retail chain. Our team handled feature development, UI improvements, and technical support across iOS and Android.
Verny Retail — iOS & Android Loyalty Program
Contributed to UI development and built the loyalty program module for Verny, one of Russia's leading grocery chains. Delivered punch-card mechanics, a personalized offer engine, and barcode scanner integration across both iOS and Android platforms.
Kari — Yandex Market & Wildberries Integration
Built a backend integration layer connecting Kari's retail network with Yandex Market and Wildberries, two of Russia's largest e-commerce platforms. Implemented automated catalog sync, order routing, stock management, and analytics reporting — reducing manual data entry by 90%.
VK NFT Marketplace
Designed and developed the smart contract infrastructure and web frontend for VK's NFT marketplace — one of Russia's first enterprise-grade NFT platforms. Delivered ERC-721/1155 contracts, minting mechanics, royalty splits, and a creator dashboard integrated with VK's social graph.
Aeroflot — AI Customer Service Chatbot
Developed a multilingual AI-powered chatbot for Aeroflot handling flight status inquiries, booking modifications, baggage claims, and FAQ resolution. Integrated with Aeroflot's reservation system and deployed across web and mobile channels, deflecting 35% of contact center volume.
Digital Neobank Platform
Built a full-featured digital banking platform for a European neobank — biometric auth, real-time P2P transfers, virtual card management, spending analytics, and open banking API connectivity. Serving 500k+ users across iOS and Android.
DeFi Lending Protocol
Decentralized lending protocol with dynamic interest rates, collateral management, and automated liquidation logic — $8M TVL at peak, fully audited with zero critical findings on Ethereum mainnet.
Telemedicine Platform
Telehealth MVP launched in 9 weeks — video consultations, appointment scheduling, HIPAA-compliant patient records, and Stripe subscription billing. Used to close a $1.2M seed round, now serving 80k+ registered patients.
High-Load E-Commerce Marketplace
End-to-end engineering for a high-load fashion marketplace — SSR storefront, real-time inventory, semantic product search, recommendation engine, and multi-gateway payments. Scaled from zero to 500k users in 14 months.
Enterprise Cloud Migration
Migrated 40+ microservices from on-premise to AWS EKS with zero-downtime cutover — full infrastructure-as-code, CI/CD pipelines, observability stack, and 40% reduction in infrastructure costs.
Enterprise SaaS CRM
Multi-tenant CRM system with workflow automation, reporting, calendar integration, and Salesforce connector for a B2B software company with 300+ enterprise clients.
ERP System for Manufacturing
Custom ERP covering procurement, production planning, inventory, quality control, and financial reporting for a mid-sized manufacturing group with 5 plants and 2,000+ employees.
Insurance CRM & Claims System
Custom CRM for a large insurance group with automated claims processing, document management, policy lifecycle tracking, and agent performance dashboards for 1,200+ agents.
Real Estate Investment Platform
Fractional property investment marketplace with KYC/AML, deal management, investor portal, and automated dividend distribution for 2,000+ accredited investors.
Logistics Fleet Management System
Real-time fleet tracking and dispatch platform with route optimization, driver mobile app (Flutter), and automated fuel reporting for a European logistics operator with 2,000+ vehicles.
NFT Launchpad Platform
Full-featured NFT minting platform with allowlist management, Dutch auction mechanics, royalty enforcement, and secondary market integration — used by 50+ collection launches.
Solana GameFi Platform
Blockchain gaming platform on Solana with in-game NFT assets, token rewards, guild mechanics, and on-chain game state using Anchor framework — 50k DAU at peak.
AI Content Generation Platform
LLM-powered content generation tool for a marketing SaaS with GPT-4 fine-tuning, brand voice calibration, SEO optimization suggestions, and team collaboration. Used by 500+ marketing teams.
Crypto Portfolio Tracker MVP
Real-time portfolio dashboard aggregating data from 15 exchanges and 5 chains — P&L tracking, DeFi position monitoring, and tax reporting module. Launched in 7 weeks.
HR Recruitment Platform MVP
ATS-style recruitment platform MVP with job posting, candidate pipeline, interview scheduling, and hiring analytics. Signed 3 enterprise clients during beta — $400k ARR within 6 months.
Food Delivery Platform (Customer + Driver Apps)
Dual React Native apps for a food delivery service — customer ordering with live order tracking, driver app with route optimization and earnings dashboard. Scales to 10k orders/day.
Digital Banking iOS App (Swift)
Native Swift banking app with Face ID/Touch ID login, real-time notifications, P2P transfers, card freeze/unfreeze, and Apple Pay integration. 4.9 App Store rating, 150k+ downloads.
Digital Banking Android App (Kotlin)
Native Kotlin banking app with biometric authentication, real-time push notifications, Google Pay integration, card management, and spending analytics for 300k+ Android users.
Core
Dedicated Teams
Revolut — Dedicated Engineering Team
Provided dedicated backend engineers to Revolut's core platform team. Our engineers worked on payment processing microservices, internal tooling, and high-throughput financial data pipelines as a direct extension of Revolut's in-house team.
Digital Neobank Platform
Built a full-featured digital banking platform for a European neobank — biometric auth, real-time P2P transfers, virtual card management, spending analytics, and open banking API connectivity. Serving 500k+ users across iOS and Android.
VK — Golang & DevOps Engineering Team
Staffed a dedicated team of 2 Golang engineers and 3 DevOps specialists for VK, Russia's largest social network. The team worked on microservice development, infrastructure automation, and Kubernetes cluster management supporting 100M+ monthly active users.
High-Load E-Commerce Marketplace
End-to-end engineering for a high-load fashion marketplace — SSR storefront, real-time inventory, semantic product search, recommendation engine, and multi-gateway payments. Scaled from zero to 500k users in 14 months.
Rosbank — Dedicated C# Development Team
Provided 4 senior C# engineers to Rosbank's digital banking division. The team developed and maintained core banking modules, payment processing integrations, and internal tooling on the .NET stack, adhering to strict regulatory and security requirements.
Enterprise SaaS CRM
Multi-tenant CRM system with workflow automation, reporting, calendar integration, and Salesforce connector for a B2B software company with 300+ enterprise clients.
Gazprom Nedra — Enterprise C# Engineering Team
Deployed a team of 6 C# developers to Gazprom Nedra for building internal enterprise systems — geological data management, field reporting automation, and ERP integrations. Delivered under strict security and compliance requirements of the energy sector.
12-Person Fintech Engineering Team
Assembled a complete team of 12 engineers (React, Node.js, QA, DevOps) for a Series B payment platform in 6 weeks. Scaled from MVP to 1M+ transactions/month over 18 months.
Magnit — DevOps Infrastructure Team
Provided 3 DevOps engineers to Magnit, Russia's largest grocery retailer, to modernize infrastructure across 29,000+ store locations. Implemented container orchestration, CI/CD pipelines, and a centralized monitoring stack — reducing deployment time from days to hours.
Crypto Exchange Team — 14 Engineers
Full dedicated team for a centralized crypto exchange — matching engine in Golang, trading UI in React, compliance module, DevOps, and QA. Handles 50k+ orders/second at peak.
Lenta — Golang Backend Engineering Team
Staffed 4 Golang engineers to Lenta's technology department to build high-performance backend services for their e-commerce and logistics platform. The team delivered microservices handling order processing, inventory sync, and delivery routing at scale.
AI & Data Platform Team — 7 Engineers
Assembled a specialized team of ML engineers and data engineers for a B2B analytics startup — model training, data pipelines, API layer, and React dashboards processing 50M+ events/day.
Burger King Russia — DevOps Support Team
Provided 2 DevOps engineers to support Burger King Russia's digital ordering infrastructure — mobile app backend, self-service kiosk integrations, and POS system reliability. Implemented automated deployments and 24/7 infrastructure monitoring.
10-Person Healthcare SaaS Team
Dedicated team for a European digital health company — React/Node.js full-stack, Flutter mobile, QA automation, and cloud infrastructure. HIPAA-compliant product serving 40 hospital networks.
Fix Price — PHP E-Commerce Engineering Team
Staffed 3 PHP developers to Fix Price's e-commerce team, working on their online storefront, product catalog management, and payment integrations. Delivered new features aligned with Fix Price's rapid retail expansion across CIS markets.
Invitro — .NET & DevOps Engineering Team
Provided 2 C# engineers and 1 DevOps specialist to Invitro, Russia's leading private medical laboratory network. The team worked on patient portal integrations, LIMS connectivity, and infrastructure reliability supporting 1,200+ collection points nationwide.
VTB Bank — DevOps & C# Engineering Team
Staffed 4 C# engineers and 5 DevOps specialists to VTB Bank, one of Russia's largest state-owned financial institutions. The C# team developed and maintained internal banking modules and integration services, while DevOps engineers managed CI/CD pipelines, infrastructure automation, and Kubernetes cluster operations across the bank's digital platform.
Brusnika — Frontend & PHP Engineering Team
Provided 3 React developers and 2 PHP engineers to Brusnika, a premium Russian real estate developer. The team built and maintained the company's digital sales platform — property catalog, mortgage calculator integrations, online apartment booking flow, and CRM connectivity.
Леманa Про — Golang & DevOps Engineering Team
Staffed 5 Golang engineers and 3 DevOps specialists to Leмана Про, one of Russia's largest home improvement retailers. The Golang team built high-performance backend microservices for the e-commerce platform, while DevOps engineers managed cloud infrastructure supporting millions of monthly transactions.
MTS — Cross-Functional Engineering Team
Provided a cross-functional team of 18 engineers to MTS, Russia's largest mobile operator — 3 Golang backend developers, 4 Angular frontend engineers, 3 iOS and 3 Android mobile developers, and 5 DevOps specialists. The team worked across MTS's digital ecosystem: subscriber self-service portal, consumer mobile apps, and core platform infrastructure.
Core
IT Outstaffing
Revolut — Dedicated Engineering Team
Provided dedicated backend engineers to Revolut's core platform team. Our engineers worked on payment processing microservices, internal tooling, and high-throughput financial data pipelines as a direct extension of Revolut's in-house team.
4× Node.js Engineers → Berlin E-Commerce
Extended a Berlin-based e-commerce backend team with 4 senior engineers during a critical platform scaling phase. Delivered API redesign, Kafka migration, and 10× throughput improvement.
System Analytics for Limcore Exchange
End-to-end system analysis for Limcore crypto exchange — business process modelling, data flow mapping, functional and non-functional requirements specification, and analytical architecture design for matching engine and order book reporting.
Senior Solidity Developer → Swiss DeFi Protocol
Provided a senior Solidity engineer to a Geneva-based DeFi team for smart contract development and security hardening of a cross-chain yield aggregator with $25M TVL.
VK — Golang & DevOps Engineering Team
Staffed a dedicated team of 2 Golang engineers and 3 DevOps specialists for VK, Russia's largest social network. The team worked on microservice development, infrastructure automation, and Kubernetes cluster management supporting 100M+ monthly active users.
Rosbank — Dedicated C# Development Team
Provided 4 senior C# engineers to Rosbank's digital banking division. The team developed and maintained core banking modules, payment processing integrations, and internal tooling on the .NET stack, adhering to strict regulatory and security requirements.
Gazprom Nedra — Enterprise C# Engineering Team
Deployed a team of 6 C# developers to Gazprom Nedra for building internal enterprise systems — geological data management, field reporting automation, and ERP integrations. Delivered under strict security and compliance requirements of the energy sector.
Magnit — DevOps Infrastructure Team
Provided 3 DevOps engineers to Magnit, Russia's largest grocery retailer, to modernize infrastructure across 29,000+ store locations. Implemented container orchestration, CI/CD pipelines, and a centralized monitoring stack — reducing deployment time from days to hours.
Lenta — Golang Backend Engineering Team
Staffed 4 Golang engineers to Lenta's technology department to build high-performance backend services for their e-commerce and logistics platform. The team delivered microservices handling order processing, inventory sync, and delivery routing at scale.
Burger King Russia — DevOps Support Team
Provided 2 DevOps engineers to support Burger King Russia's digital ordering infrastructure — mobile app backend, self-service kiosk integrations, and POS system reliability. Implemented automated deployments and 24/7 infrastructure monitoring.
Fix Price — PHP E-Commerce Engineering Team
Staffed 3 PHP developers to Fix Price's e-commerce team, working on their online storefront, product catalog management, and payment integrations. Delivered new features aligned with Fix Price's rapid retail expansion across CIS markets.
Invitro — .NET & DevOps Engineering Team
Provided 2 C# engineers and 1 DevOps specialist to Invitro, Russia's leading private medical laboratory network. The team worked on patient portal integrations, LIMS connectivity, and infrastructure reliability supporting 1,200+ collection points nationwide.
VTB Bank — DevOps & C# Engineering Team
Staffed 4 C# engineers and 5 DevOps specialists to VTB Bank, one of Russia's largest state-owned financial institutions. The C# team developed and maintained internal banking modules and integration services, while DevOps engineers managed CI/CD pipelines, infrastructure automation, and Kubernetes cluster operations across the bank's digital platform.
Brusnika — Frontend & PHP Engineering Team
Provided 3 React developers and 2 PHP engineers to Brusnika, a premium Russian real estate developer. The team built and maintained the company's digital sales platform — property catalog, mortgage calculator integrations, online apartment booking flow, and CRM connectivity.
Леманa Про — Golang & DevOps Engineering Team
Staffed 5 Golang engineers and 3 DevOps specialists to Leмана Про, one of Russia's largest home improvement retailers. The Golang team built high-performance backend microservices for the e-commerce platform, while DevOps engineers managed cloud infrastructure supporting millions of monthly transactions.
MTS — Cross-Functional Engineering Team
Provided a cross-functional team of 18 engineers to MTS, Russia's largest mobile operator — 3 Golang backend developers, 4 Angular frontend engineers, 3 iOS and 3 Android mobile developers, and 5 DevOps specialists. The team worked across MTS's digital ecosystem: subscriber self-service portal, consumer mobile apps, and core platform infrastructure.
Blockchain
Blockchain Development
VK NFT Marketplace
Designed and developed the smart contract infrastructure and web frontend for VK's NFT marketplace — one of Russia's first enterprise-grade NFT platforms. Delivered ERC-721/1155 contracts, minting mechanics, royalty splits, and a creator dashboard integrated with VK's social graph.
DeFi Lending Protocol
Decentralized lending protocol with dynamic interest rates, collateral management, and automated liquidation logic — $8M TVL at peak, fully audited with zero critical findings on Ethereum mainnet.
Senior Solidity Developer → Swiss DeFi Protocol
Provided a senior Solidity engineer to a Geneva-based DeFi team for smart contract development and security hardening of a cross-chain yield aggregator with $25M TVL.
DeFi Yield Aggregator
Automated yield optimization protocol with smart contract vaults, multi-DEX routing, and auto-compounding strategies. Deployed on Ethereum and Polygon with $12M TVL at peak.
NFT Launchpad Platform
Full-featured NFT minting platform with allowlist management, Dutch auction mechanics, royalty enforcement, and secondary market integration — used by 50+ collection launches.
Cross-Chain Decentralized Exchange
DEX with cross-chain swaps via LayerZero bridge, concentrated liquidity pools, and on-chain limit orders. Live on Ethereum, Arbitrum, and BNB Chain with $30M daily volume.
Multi-Chain Non-Custodial Wallet
Non-custodial wallet supporting Ethereum, Solana, BNB Chain, and Polygon with DApp browser, built-in swap aggregator, and hardware wallet (Ledger/Trezor) support.
Solana GameFi Platform
Blockchain gaming platform on Solana with in-game NFT assets, token rewards, guild mechanics, and on-chain game state using Anchor framework — 50k DAU at peak.
DeFi Protocol Smart Contract Audit
Comprehensive security audit of a $50M TVL lending protocol — manual Solidity review, Slither/Echidna scanning, and economic attack analysis. Identified 3 critical issues including reentrancy and price manipulation vulnerabilities.
Cross-Chain Bridge Smart Contract Audit
Audit of a cross-chain bridge with $30M locked — discovered critical message validation flaw that could have enabled unlimited token minting before mainnet deployment.
Data & AI
AI Solutions
Aeroflot — AI Customer Service Chatbot
Developed a multilingual AI-powered chatbot for Aeroflot handling flight status inquiries, booking modifications, baggage claims, and FAQ resolution. Integrated with Aeroflot's reservation system and deployed across web and mobile channels, deflecting 35% of contact center volume.
AI & Data Platform Team — 7 Engineers
Assembled a specialized team of ML engineers and data engineers for a B2B analytics startup — model training, data pipelines, API layer, and React dashboards processing 50M+ events/day.
AI Content Generation Platform
LLM-powered content generation tool for a marketing SaaS with GPT-4 fine-tuning, brand voice calibration, SEO optimization suggestions, and team collaboration. Used by 500+ marketing teams.
Real-Time Fraud Detection System
ML fraud detection processing 500k daily transactions for a payment processor — 99.2% accuracy with sub-50ms inference latency, saving $2M+ annually in fraud losses.
Intelligent Document Processing
AI platform for automated extraction, classification, and validation of financial documents — invoices, contracts, reports — with 97% accuracy and direct ERP integration.
E-Commerce Recommendation Engine
Personalized product recommendation system using collaborative filtering and content-based models — increased average order value by 23% for a marketplace with 2M+ monthly users.
Computer Vision QA for Manufacturing
Automated visual quality inspection system using custom-trained YOLO models — detects product defects with 99.2% accuracy at full production line speed, replacing 12 manual inspectors.
AI Legal Document Analyzer MVP
Contract review MVP using GPT-4 to identify risks, extract key clauses, and generate plain-language summaries. Reduced contract review time by 80% in beta testing with 3 law firms.
Infrastructure
DevOps & Cloud
Magnit — DevOps Infrastructure Team
Provided 3 DevOps engineers to Magnit, Russia's largest grocery retailer, to modernize infrastructure across 29,000+ store locations. Implemented container orchestration, CI/CD pipelines, and a centralized monitoring stack — reducing deployment time from days to hours.
Burger King Russia — DevOps Support Team
Provided 2 DevOps engineers to support Burger King Russia's digital ordering infrastructure — mobile app backend, self-service kiosk integrations, and POS system reliability. Implemented automated deployments and 24/7 infrastructure monitoring.
VTB Bank — DevOps & C# Engineering Team
Staffed 4 C# engineers and 5 DevOps specialists to VTB Bank, one of Russia's largest state-owned financial institutions. The C# team developed and maintained internal banking modules and integration services, while DevOps engineers managed CI/CD pipelines, infrastructure automation, and Kubernetes cluster operations across the bank's digital platform.
Леманa Про — Golang & DevOps Engineering Team
Staffed 5 Golang engineers and 3 DevOps specialists to Leмана Про, one of Russia's largest home improvement retailers. The Golang team built high-performance backend microservices for the e-commerce platform, while DevOps engineers managed cloud infrastructure supporting millions of monthly transactions.
MTS — Cross-Functional Engineering Team
Provided a cross-functional team of 18 engineers to MTS, Russia's largest mobile operator — 3 Golang backend developers, 4 Angular frontend engineers, 3 iOS and 3 Android mobile developers, and 5 DevOps specialists. The team worked across MTS's digital ecosystem: subscriber self-service portal, consumer mobile apps, and core platform infrastructure.
Enterprise Cloud Migration
Migrated 40+ microservices from on-premise to AWS EKS with zero-downtime cutover — full infrastructure-as-code, CI/CD pipelines, observability stack, and 40% reduction in infrastructure costs.
Zero-Downtime CI/CD Pipeline
Full CI/CD infrastructure with blue-green deployment, automated testing gates, canary releases, and rollback automation for a 50-service microservices platform — 20+ deploys per day.
PCI-DSS Compliant AWS Infrastructure
Built PCI-DSS compliant AWS infrastructure for a payment processor — multi-region setup, WAF, VPC isolation, secrets management with Vault, and SOC 2 audit-ready logging.
Multi-Cloud Kubernetes Migration
Migrated a legacy VM-based infrastructure to Kubernetes across AWS and GCP — Helm chart standardization, service mesh with Istio, and 60% infrastructure cost reduction.
High-Availability Database Infrastructure
PostgreSQL HA cluster with streaming replication, automated failover (Patroni), cross-region backups, and read replica auto-scaling for a 10TB+ trading platform database with zero downtime.
DevSecOps Pipeline Implementation
End-to-end DevSecOps pipeline for a fintech startup — SAST with SonarQube, DAST with OWASP ZAP, container scanning with Trivy, and secret detection integrated into GitHub Actions.
Quality
QA & Testing
Mobile Banking App QA Automation
End-to-end QA setup for iOS and Android banking apps — Appium automation framework, 800+ regression test cases, CI integration, and performance benchmarking across 20 device configurations.
E-Commerce Playwright Suite (1,400+ Tests)
Complete Playwright test suite for a marketplace — user journeys from search to checkout, cross-browser, mobile viewports, parallel execution in CI under 8 minutes, zero production regressions.
Healthcare SaaS QA Automation
HIPAA-compliant QA framework for a telehealth platform — automated UI testing, API contract testing, accessibility testing (WCAG 2.1), and audit trail verification for regulatory approval.
Payment Platform Penetration Test
Full-scope pentest for a payment processor — web app, API, and infrastructure assessment. Found 2 critical and 8 high vulnerabilities. PCI-DSS compliance achieved post-remediation.
Enterprise ERP UI Automation
Selenium-based automation framework for a 200-screen enterprise ERP — cross-browser testing, visual regression, and Azure DevOps CI/CD integration reducing regression cycle from 3 days to 4 hours.
Core
MVP Development
Telemedicine Platform
Telehealth MVP launched in 9 weeks — video consultations, appointment scheduling, HIPAA-compliant patient records, and Stripe subscription billing. Used to close a $1.2M seed round, now serving 80k+ registered patients.
Real Estate Investment Platform
Fractional property investment marketplace with KYC/AML, deal management, investor portal, and automated dividend distribution for 2,000+ accredited investors.
Crypto Portfolio Tracker MVP
Real-time portfolio dashboard aggregating data from 15 exchanges and 5 chains — P&L tracking, DeFi position monitoring, and tax reporting module. Launched in 7 weeks.
AI Legal Document Analyzer MVP
Contract review MVP using GPT-4 to identify risks, extract key clauses, and generate plain-language summaries. Reduced contract review time by 80% in beta testing with 3 law firms.
HR Recruitment Platform MVP
ATS-style recruitment platform MVP with job posting, candidate pipeline, interview scheduling, and hiring analytics. Signed 3 enterprise clients during beta — $400k ARR within 6 months.
Fintech Lending Platform MVP
P2P lending platform MVP with credit scoring integration, loan origination, document verification, and investor dashboard. Built in 10 weeks, regulatory approval secured within 4 months.
Social Commerce MVP
Short-video shopping MVP with in-video product tagging, live stream sales, creator analytics, and integrated checkout. Built in 8 weeks for a Southeast Asia launch — 10k users in week one.
Mobile
Mobile Development
Street Beat — Mobile App for Sneaker Retail Chain (Flutter)
Ongoing development and maintenance of the Flutter-based mobile application for Street Beat, a leading Russian sneaker and casual footwear retail chain. Our team handled feature development, UI improvements, and technical support across iOS and Android.
Verny Retail — iOS & Android Loyalty Program
Contributed to UI development and built the loyalty program module for Verny, one of Russia's leading grocery chains. Delivered punch-card mechanics, a personalized offer engine, and barcode scanner integration across both iOS and Android platforms.
Digital Neobank Platform
Built a full-featured digital banking platform for a European neobank — biometric auth, real-time P2P transfers, virtual card management, spending analytics, and open banking API connectivity. Serving 500k+ users across iOS and Android.
Multi-Chain Non-Custodial Wallet
Non-custodial wallet supporting Ethereum, Solana, BNB Chain, and Polygon with DApp browser, built-in swap aggregator, and hardware wallet (Ledger/Trezor) support.
Social Commerce MVP
Short-video shopping MVP with in-video product tagging, live stream sales, creator analytics, and integrated checkout. Built in 8 weeks for a Southeast Asia launch — 10k users in week one.
Food Delivery Platform (Customer + Driver Apps)
Dual React Native apps for a food delivery service — customer ordering with live order tracking, driver app with route optimization and earnings dashboard. Scales to 10k orders/day.
Healthcare Patient App (Flutter)
Flutter patient app for a 30-clinic network — appointment booking, lab results, medication reminders, WebRTC video consultations, and HIPAA-compliant offline mode.
Digital Banking iOS App (Swift)
Native Swift banking app with Face ID/Touch ID login, real-time notifications, P2P transfers, card freeze/unfreeze, and Apple Pay integration. 4.9 App Store rating, 150k+ downloads.
Digital Banking Android App (Kotlin)
Native Kotlin banking app with biometric authentication, real-time push notifications, Google Pay integration, card management, and spending analytics for 300k+ Android users.
Field Service Mobile App (3,000 Technicians)
Offline-first React Native app for field technicians — work orders, QR/barcode scanning, GPS check-ins, photo documentation, and sync when connectivity is restored for a utilities company.
Security
Cybersecurity
DeFi Protocol Smart Contract Audit
Comprehensive security audit of a $50M TVL lending protocol — manual Solidity review, Slither/Echidna scanning, and economic attack analysis. Identified 3 critical issues including reentrancy and price manipulation vulnerabilities.
PCI-DSS Compliant AWS Infrastructure
Built PCI-DSS compliant AWS infrastructure for a payment processor — multi-region setup, WAF, VPC isolation, secrets management with Vault, and SOC 2 audit-ready logging.
Payment Platform Penetration Test
Full-scope pentest for a payment processor — web app, API, and infrastructure assessment. Found 2 critical and 8 high vulnerabilities. PCI-DSS compliance achieved post-remediation.
DevSecOps Pipeline Implementation
End-to-end DevSecOps pipeline for a fintech startup — SAST with SonarQube, DAST with OWASP ZAP, container scanning with Trivy, and secret detection integrated into GitHub Actions.
Cross-Chain Bridge Smart Contract Audit
Audit of a cross-chain bridge with $30M locked — discovered critical message validation flaw that could have enabled unlimited token minting before mainnet deployment.
SOC 2 Type II Security Preparation
Security controls implementation to achieve SOC 2 Type II compliance for a B2B SaaS — gap analysis, controls implementation, evidence collection, and auditor support.
Data & AI
Data Engineering
Trading Analytics Platform for OKX
Built a comprehensive analytics platform for OKX crypto exchange — real-time trading volume dashboards, user behaviour analytics, revenue attribution by instrument and region, and executive KPI reporting. Processing 100M+ events daily with sub-second query latency.
Raiffeisen Bank International — DWH Migration
Full migration of a 15 TB Oracle data warehouse to Greenplum MPP for Raiffeisen Bank International — ETL redesign, SQL query optimisation, data mart rebuild, and zero-downtime cutover. Query execution time reduced by 70%, infrastructure costs cut by 45%.
Real-Time Fraud Detection System
ML fraud detection processing 500k daily transactions for a payment processor — 99.2% accuracy with sub-50ms inference latency, saving $2M+ annually in fraud losses.
High-Availability Database Infrastructure
PostgreSQL HA cluster with streaming replication, automated failover (Patroni), cross-region backups, and read replica auto-scaling for a 10TB+ trading platform database with zero downtime.
Real-Time Analytics Pipeline (50M events/day)
Kafka-based streaming pipeline ingesting 50M+ daily events from web, mobile, and backend systems — Kafka Streams processing, ClickHouse OLAP storage, and Grafana dashboards for business teams.
Financial Data Warehouse (Snowflake)
Snowflake data warehouse for a trading firm — dbt transformation layer, automated ELT from 12 data sources, and Power BI dashboards for risk management and P&L reporting.
Analytics
Analytics & BI
Trading Analytics Platform for OKX
Built a comprehensive analytics platform for OKX crypto exchange — real-time trading volume dashboards, user behaviour analytics, revenue attribution by instrument and region, and executive KPI reporting. Processing 100M+ events daily with sub-second query latency.
System Analytics for Limcore Exchange
End-to-end system analysis for Limcore crypto exchange — business process modelling, data flow mapping, functional and non-functional requirements specification, and analytical architecture design for matching engine and order book reporting.
Raiffeisen Bank International — DWH Migration
Full migration of a 15 TB Oracle data warehouse to Greenplum MPP for Raiffeisen Bank International — ETL redesign, SQL query optimisation, data mart rebuild, and zero-downtime cutover. Query execution time reduced by 70%, infrastructure costs cut by 45%.
Real-Time Analytics Pipeline (50M events/day)
Kafka-based streaming pipeline ingesting 50M+ daily events from web, mobile, and backend systems — Kafka Streams processing, ClickHouse OLAP storage, and Grafana dashboards for business teams.
Financial Data Warehouse (Snowflake)
Snowflake data warehouse for a trading firm — dbt transformation layer, automated ELT from 12 data sources, and Power BI dashboards for risk management and P&L reporting.
Business Intelligence Platform for Retail Group
Centralised BI platform for a 200-store retail chain — Snowflake DWH, dbt transformation layer, and Power BI dashboards covering sales, margin, stock turnover, and store-level KPIs for 50+ management users.
Executive Analytics for Insurance Holding
Built a data mart and Tableau-based executive dashboard suite for an insurance group — policy lifecycle analytics, claims ratio monitoring, agent performance scorecards, and automated regulatory reporting for 3 subsidiaries.
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