Implemented Projects
We work under a strict NDA, so we do not disclose client names or exact financial figures. Below are anonymized cases demonstrating our engineering approach to solving complex architectural and infrastructure challenges in the Enterprise segment.
Industry: Financial Technology (FinTech)
Payment System Transaction Core
A large fintech startup faced the problem of scaling a monolithic architecture. During peak loads (e.g., sales days), the system could not cope with the volume of transactions, leading to timeouts, balance desynchronization, and direct financial losses.
Challenge
Design and implement a new microservices architecture for payment processing, ensuring a throughput of up to 10,000 RPS. Guarantee transactional integrity (ACID) and full compliance with PCI DSS security standards.
Solution
The core was rewritten in Java/Spring Boot using Saga and Outbox patterns. Asynchronous processing was implemented via Apache Kafka. The database was migrated from a single monolith to a sharded PostgreSQL. A Kubernetes cluster was deployed.
Business Result
Fault tolerance increased to 99.99%. Transaction processing time (p99) reduced by 4 times. The system successfully withstood the "Black Friday" load without a single failure. PCI DSS audit passage was simplified.
Industry: Manufacturing & Industry
Enterprise Service Bus (ESB) and Employee Portal
An industrial holding used dozens of disparate IT systems (ERP, warehouse accounting, HR portal, IoT machine sensors). Employees had to duplicate data manually, and management lacked a unified dashboard for real-time analytics.
Challenge
Integrate all legacy systems into a single data exchange contour (ESB) and create a corporate portal (SPA) for 600+ employees with a role-based access control (RBAC) model and Active Directory integration.
Solution
A data bus was developed based on RabbitMQ and high-performance microservices in Go. The portal frontend was implemented in React using the corporate design system. End-to-end authorization (SSO/SAML) was configured.
Business Result
A single point of access to internal services was created. IT support load was reduced by 30%. Manual data entry errors were eliminated. Management received end-to-end real-time analytics of production processes.
Industry: E-commerce / Retail
Highload Checkout System and Inventory Synchronization
A large retailer was losing orders due to a slow cart and outdated inventory data in warehouses. The monolithic PHP system did not allow scaling individual nodes during traffic spikes.
Challenge
Separate the checkout and inventory processes into distinct high-performance services. Ensure inventory synchronization with 50+ offline stores in real-time.
Solution
The CQRS pattern was implemented. The cart service was rewritten using Redis for caching. Inventory synchronization was implemented via an Event-Driven architecture (Kafka). Full-text search was configured based on Elasticsearch.
Business Result
Purchase conversion (CR) increased by 12% due to checkout acceleration. The problem of "overselling" out-of-stock items was completely resolved. The infrastructure is ready for a multiple increase in traffic.
Industry: B2B SaaS
DevSecOps and CI/CD Implementation
A product company released updates once a month. The deployment process took several days and required manual intervention by engineers. "Crashes" frequently occurred in production due to environment desynchronization (dev/stage/prod).
Solution: Completely rebuilt the release process. Implemented containerization (Docker), orchestration (Kubernetes), and automated CI/CD pipelines in GitLab. Added automated security checks (SAST) and configuration management (Terraform).
Result: Zero-Downtime deployment. Release time reduced from days to minutes. The team moved to daily releases (Continuous Deployment), reducing the Time-to-Market of new features.
Industry: Public Sector (GovTech)
Audit and QA Automation of a Portal
A government services portal suffered from constant regression bugs after every update. Manual testing took weeks, which disrupted project delivery deadlines under government contracts.
Solution: Conducted an audit of QA processes. Covered critical business scenarios with end-to-end E2E autotests (Playwright). Implemented load testing (JMeter) to check infrastructure readiness for seasonal peaks (reporting periods).
Result: Regression testing time reduced from 2 weeks to 4 hours. The number of critical defects (Blocker/Critical) in production decreased by 85%. Successful passage of acceptance tests.
Industry: Logistics (Supply Chain)
Real-time Cargo Tracking System
A logistics operator needed a system to track thousands of vehicles in real-time. The old system updated data once an hour and frequently "lost" telemetry packets.
Solution: Developed a high-performance telemetry reception service in Go. Used WebSockets for instant updates to the dispatchers' interface. Implemented TimescaleDB for efficient storage of time-series data.
Result: Geolocation display latency reduced to < 1 second. The system stably processes 50,000+ events per second. The accuracy of estimated time of arrival (ETA) forecasting was improved.
Industry: MedTech / Healthcare
Secure Telemedicine Portal
A clinic network was launching an online consultation service. The key requirement was the absolute security of personal medical data and strict compliance with data protection laws.
Solution: Designed the architecture taking into account regulatory requirements. Implemented end-to-end encryption, strict RBAC, and audit logging of all actions. Developed a secure backend and integrated a video communication service (WebRTC).
Result: Successful launch of the platform on time. The system passed an independent information security audit without critical remarks. Patient data protection is ensured.
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