Open to opportunities

Konstantin Stepanyuk

@konstantinstepanyuk

Message

Senior software engineer specializing in Go microservices and event-driven systems at scale.

Serbia

Message

What I'm looking for

I’m looking to build and scale reliable, high-performance microservices with strong ownership—event-driven architectures, cloud-native delivery on AWS/Kubernetes, and observability. I also want a team that welcomes AI-assisted engineering for faster, higher-quality work.

I’m a Senior Software Engineer with 16+ years of experience building high-load distributed systems and microservices, specializing in Go. I design, scale, and own production backend services end-to-end—from event-driven architectures to gRPC/REST APIs and Postgres-backed real-money transaction systems at 5k–20k RPS.

I’m hands-on with cloud-native development on AWS and Kubernetes, CI/CD automation, and observability practices with a strong focus on reliability and performance. I also bring daily AI-assisted engineering habits—agentic coding tools, prompt/context engineering, and model evaluation—to accelerate delivery while maintaining cost and output quality.

Experience

Work history, roles, and key accomplishments

Current

Senior Golang Developer

Current

Remote

Mar 2023 - Present (3 years 4 months)

Designed and scaled high-load Go microservices on AWS, building gRPC/REST APIs and event-driven systems using Kafka, NATS, and NSQ. Improved reliability and deployment frequency via Kubernetes and CI/CD, and handled production incidents through RCA and fixes.

Go Golang gRPC REST Microservices Event Driven Architecture Kafka NATS NSQ AWS Kubernetes Docker CI CD Observability Monitoring Logging Reliability Engineering

Senior Java Backend Engineer

Intabia

Sep 2016 - Jan 2023 (6 years 4 months)

Designed and developed high-load distributed systems using Java and Spring, including microservices with REST APIs and asynchronous messaging. Improved performance via profiling and JVM tuning, and supported production incidents, interviews, and internal training.

Java Spring Boot Spring MVC Microservices REST APIs Asynchronous Kafka RabbitMQ PostgreSQL MongoDB Architecture Design Performance Profiling Query Optimization Junit Mockito CI CD Maven Gradle Docker Production Support

Full Stack Developer

Toptal

Jan 2014 - Nov 2016 (2 years 10 months)

Delivered full-stack web applications for US and EU clients, building Node.js (Express) backends with React and Angular frontends. Owned deployments and environment setup end-to-end and supported production issues within SLAs.

Node Express React Angular JavaScript REST APIs SLA

Java Engineer

EastBanc Tech

Jun 2011 - Dec 2013 (2 years 6 months)

Developed and maintained Java applications across backend and frontend components. Participated in full SDLC activities, provided production support, and resolved bugs affecting system stability.

Java Backend Development Frontend Development SDLC Testing Production Support

C++ Engineer

UniPro

Jun 2009 - May 2011 (1 year 11 months)

Developed and optimized high-performance GPGPU-based algorithms for data-intensive tasks. Built UI tools for configuring algorithms and visualizing results, and improved execution time and throughput.

C++High Performance Computing Optimization Performance Optimization Throughput