Looking for a job

Valentin Yakushev

@yakaska

Message

I build high-load Go microservices for FinTech and banking, specializing in Kafka and SQL optimization.

Vietnam

Message

What I'm looking for

I’m looking for a team where I can build and optimize backend microservices with event-driven architecture (Kafka), improve performance with SQL tuning, and ship reliably via CI/CD and Kubernetes. I’m open to remote work and relocation.

I’m a Go Backend Developer with 2+ years of experience in FinTech and banking, building high-load microservices for a credit platform serving 800k+ monthly active users. I design REST APIs with idempotent operations and OpenAPI contracts, and I’ve implemented business-critical loan restructuring logic that increased restructuring application share by ~50% and added 60,000+ new unique users per month.

I specialize in event-driven architecture with Kafka and in SQL optimization using indexes, CTES, and batch processing—cutting latency on critical endpoints by ~1.5x. I also build reliable delivery pipelines with Jenkins and deploy containerized services to Kubernetes/OpenShift, and I bring a strong polyglot background with Java/Kotlin from core banking work, plus DevOps/system administration experience supporting infrastructure automation and container orchestration.

Experience

Work history, roles, and key accomplishments

Current

Go Backend Developer

Current

Sber

Jun 2025 - Present (1 year 1 month)

Developed and maintained three production Golang microservices for a credit platform serving 800k+ monthly active users, including REST APIs and Kafka-based async pipelines. Optimized SQL queries and CI/CD deployments to Kubernetes/OpenShift, and built a loan restructuring algorithm that increased restructuring share by ~50%.

Golang Microservices PostgreSQL Kafka REST APIs OpenAPI SQL Optimization Batch Processing Jenkins Docker Kubernetes OpenShift CI CD

Java Backend Developer

Metallinvestbank

May 2024 - Feb 2025 (9 months)

Developed and maintained a core banking system in Java with MS SQL for processing 200+ SWIFT transactions daily across six partner banks. Refactored T-SQL stored procedures and indexing strategies to reduce processing time by ~24%, and implemented REST integrations to onboard partners.

Java SQL T SQL Stored Procedures Indexing Swift Partner Onboarding

DevOps Engineer / System Administrator

MIREA

May 2023 - Mar 2024 (10 months)

Administered Active Directory infrastructure and deployed virtualized environments using Proxmox/VMware to host 20+ VMs. Introduced Docker containerization and a Kubernetes test environment, and automated 10+ routine tasks with Bash and Python to save 5+ hours per week.