Konstantin Evtenko
Senior Backend Engineer — Go/Golang & Laravel (PHP)
AI/LLM Integrations · PHP-to-Golang migration · High-load systems
Summary
Senior Backend Engineer, 10+ years shipping production systems: high-load APIs, real-time data infrastructure, SaaS platforms, and the integrations that hold them together. Deep hands-on experience in Go and Laravel/PHP, with a track record of migrating legacy PHP monoliths to Go-based microservices.
Currently building a low-latency, high-concurrency real-time data platform in fintech: WebSocket market data across 8 venues and 16 instruments, 128 concurrent streams, 10–500µs decision latency, with a multi-model AI consensus layer (Anthropic, OpenAI, Gemini) for automated decision-making.
How I Work
AI/LLM Integrations
Multi-model consensus pipelines (Anthropic, OpenAI, Gemini) with human-in-the-loop Telegram approval: saves ~8–10 hours a day of manual monitoring, a 15–35% efficiency gain over doing it by hand.
PHP → Golang migration
Taking legacy PHP monoliths apart and rebuilding them as Go microservices, without stopping the business while it happens: the niche I keep getting hired back for.
High-load & realtime
Since Jan 2025, running a fintech real-time data platform in Go at ~1,280 msg/sec, plus queue-heavy systems and Kafka pipelines elsewhere.
Infra, end to end
Docker, Kubernetes, CI/CD, AWS/GCP/Azure. I own the stack rather than handing infra to someone else, backend, infra, and frontend when the project calls for it (React, Vue.js).
Core Skills
Engagement
Available for full-time remote or long-term B2B contract roles. Operates via registered sole proprietorships in both Georgia and Armenia, enabling straightforward B2B/hourly contracting with European and US clients without additional legal setup on the client side.
Let’s talk about your project
Scoping a Go service, planning a migration off a PHP monolith, or need one person who can own the whole stack, backend through frontend? Send a short note about the system and the timeline.