Valentyn Kit

Lead Backend / Platform Engineer

• Lead the platform for a 200K-MAU self-custody FinTech wallet. Designed and own the Rust-core blockchain-abstraction layer every other service builds on: one reliable interface over many chains, with idempotency, back-pressure, and circuit-breakers turning flaky providers into a dependable substrate.
• Modeled money movement (swap, stake, bridge, card-spend) as explicit state machines: durable, exactly-once, crash- and reorg-recoverable.
• Secure non-custodial signing on MPC custody; Go/Rust microservices on Kubernetes, shipped daily.

Rust, Go, Kubernetes, PostgreSQL

Senior Software Engineer

• Built an agentic-AI platform for enterprise: multi-agent coordination, MCP gateways with auth, quotas and telemetry, trustworthy RAG with citation traceability, and CI/CD with safe rollback.
• The engineering discipline around AI: guardrails, verification, observability, deployment safety.

C#/.NET, Azure, Semantic Kernel, MCP

Backend Engineer

• High-concurrency Web3 game-economy backend: currency, rewards, and leaderboards correct under concurrency at scale.
• Blockchain integration layer with idempotency and back-pressure that absorbed chain variance without player-visible errors. Event-driven over RabbitMQ, Lambda, and EKS.

.NET, PostgreSQL, AWS (Lambda, EKS), RabbitMQ

Backend & Reliability Engineer

• Re-architected data-intensive document-processing pipelines on Azure Functions and Service Bus with batching, back-pressure, and idempotency: higher throughput at lower cost, SLOs held.
• Zero-downtime delivery across a five-environment path; on-call P1/P2 incident response, alerting, and telemetry.

Azure (Service Bus, Functions), .NET, MSSQL, Elastic

Trainee .NET Developer

• REST microservices, Entity Framework / MSSQL, Agile.