Vitaliy – Golang, Kubernetes, Temporal

A blockchain infrastructure company building Layer 2 solutions and cross-chain tooling, such as an NFT bridge.

• Designed and implemented backend services including a high-throughput NFT Bridge and Transaction Quality Service using Golang and Kubernetes on AWS.
• Developed and maintained core functionality for an EVM-compatible L2 blockchain, managing state transitions and cross-layer messaging.
• Reduced transaction latency by 35% through backend refactoring and database optimization.
• Achieved 99.99% uptime by implementing Temporal-based orchestration and AWS auto-scaling.
• Cut AWS costs by 30% through instance right-sizing, storage tuning, and infrastructure cleanup.
• Led architecture decisions for Kubernetes workloads and CI/CD pipelines with GitHub Actions.
• Mentored junior engineers through code reviews and pair programming in a fully remote team environment.

A software company building decisioning and financial automation platforms for financial institutions.

• Led the development of microservices for decisioning systems and financial automation platforms.
• Built core microservices using Golang and .NET to power automated decision-making systems.
• Reduced backend latency by 40% by optimizing threading models and caching strategies.
• Increased throughput by 60% and improved database performance through schema redesign.
• Lowered AWS operational costs by 25% with right-sizing, usage analysis, and redundant service removal.
• Re-architected a JavaScript execution engine for stability, reducing crash rates by over 70%.
• Led backend architecture reviews, mentored developers, and drove DevOps integration with Kubernetes and CI/CD.

A large-scale CRM platform for a leading European bank.

• Helped build a large-scale CRM platform for a leading European bank.
• Designed and developed a dynamic document viewer with a modular backend and database model.
• Reduced database query latency by 45% through normalization and indexing.
• Introduced unit and integration test frameworks, increasing test coverage from 20% to 85%.
• Promoted code quality by introducing peer review workflows and improving onboarding practices.
• Played a key role in architecture planning and development standardization across teams.

A high-traffic mobile campaign management platform.

• Worked on backend systems for a high-traffic mobile campaign management platform.
• Reduced service response time by 20% through backend logic optimization.
• Boosted unit test coverage from 35% to 80%, improving overall reliability.
• Authored high-level design docs for key modules, improving team alignment and onboarding.
• Refactored core backend components for better maintainability and performance.

A custom software development company delivering .NET-based business applications.

• Refactored existing components to make them more maintainable.
• Improved code coverage with unit tests.