PostgreSQL
Development
Production-grade relational database for mission-critical systems.
PostgreSQL is our default relational database. We design schema architectures, optimize query performance, implement HA replication (Patroni), row-level security, and handle migrations for systems from startup to enterprise scale.
Cases
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.
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%.
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%.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Why Codifysoft
Senior engineers
Mid+ and senior specialists only
Fast scaling
Team expansion in 1–2 weeks
Flexible engagement
Hourly, fixed, or dedicated
Enterprise experience
Complex, high-load systems
Blockchain expertise
302+ contracts deployed
Full transparency
Direct access to your team
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