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Vitalii Mykhailov

@vitaliimykhailov

Backend Developer (Go) | Kubernetes, PostgreSQL, Redis, Kafka | Building platform services & APIs for 500+ K8s clusters | Fintech (KYC) background

Cyprus

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What I'm looking for

I’m looking for a team where I can own backend services end-to-end, build secure REST/gRPC APIs and event-driven pipelines, and rely on strong engineering practices—testing, code review, and real production troubleshooting.

I’m a Go Backend Developer with ~5 years building backend services and APIs in Go (Golang), with a strong focus on reliability and production ownership. I’ve worked on REST and gRPC APIs, event-driven processing with Kafka, and production data layers with PostgreSQL and Redis.

At Nokia, I contributed to a platform managing 500+ production Kubernetes clusters, including root-cause analysis on high-severity incidents and taking production on-call. I extended the Kubernetes API in Go with client-go and controller-runtime, and built security and access control with JWT flows and Dex identity federation.

I also delivered fintech KYC/identity-verification backend features at FourthLine—taking tasks from specification to production on AWS, implementing partner integrations, improving test coverage, and ensuring explicit error handling and backward-compatible REST APIs.

Experience

Work history, roles, and key accomplishments

Backend Developer

Nokia

Apr 2023 - Jul 2026 (3 years 3 months)

Built and maintained Go backend services and APIs (gRPC and REST) for a large-scale Kubernetes platform running 500+ production clusters. Worked on Kafka-based asynchronous processing, database performance tuning for PostgreSQL/Redis, Kubernetes API extensions, and production incident debugging with Prometheus and Grafana.

Go REST APIs gRPC Protocol Buffers Kafka PostgreSQL Redis Kubernetes Controller Runtime JWT Dex Identity Federation OpenSearch Prometheus Grafana CI CD Docker Code Review On Call

Backend Developer

FourthLine

Mar 2022 - Feb 2023 (11 months)

Developed backend features in Go for a fintech KYC/identity-verification platform used by banks, moving tasks from specification to production. Built REST APIs for external partner integrations with explicit error handling, implemented third-party API integrations with retries/timeouts, and supported production PostgreSQL changes alongside on-call incident debugging.

Go REST APIs PostgreSQL AWS Docker CI CD Git API Integration Retries Timeouts On Call

Trainee Go Developer

EPAM Systems

Jan 2021 - Jan 2022 (1 year)

Developed and maintained REST API endpoints in Go for a commercial client product within an established codebase with strict code review. Wrote unit and integration tests, worked with production SQL (query debugging and small schema changes), and containerized services with Docker for dev/CI parity.