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Boris Finkelshteyn

@borisfinkelshteyn

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Lead software developer specializing in scalable backend systems.

Russian Federation

Message

What I'm looking for

I seek technical leadership roles where I can design and build scalable, low‑latency backend systems, mentor teams, and improve deployment automation, observability, and performance in cloud-native environments.

I am a lead software developer with 13+ years building high-performance Java, Kotlin, and Go web applications and over a decade of full‑stack experience. I focus on designing resilient, low‑latency distributed systems and delivering production‑ready solutions.

I have led end‑to‑end projects from architecture through deployment, including migrating infrastructures to Kubernetes, automating environments with Terraform and ArgoCD, and establishing CI/CD pipelines with GitLab CI/CD and AWS tools.

My work includes building a sub‑50ms chat backend, developing multi‑tenant OAuth2/SAML authorization servers, and replacing legacy async systems with reactive Spring WebFlux backends; I emphasize profiling and performance tuning that improved API response times by orders of magnitude.

I practice strong code quality through reviews and testing, mentor engineers, and integrate observability practices with Grafana and OpenTelemetry; I deliver secure, well‑tested solutions that pass independent security audits and scale reliably in cloud environments.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Developer

Current

Vama

Aug 2023 - Present (2 years 5 months)

Led architecture and end-to-end development of a low-latency, highly scalable chat backend, achieving sub-50 ms response targets and large API speed improvements through profiling and gRPC migration.

Go gRPC Kubernetes Terraform Cassandra OpenTelemetry Performance Optimization

Lead Software Developer

ESProfiler

Dec 2022 - Aug 2023 (8 months)

Designed and delivered an OAuth2/SAML multi-tenant Authorization Server and an integration engine MVP, passed an independent security audit with no critical issues and enabled secure, scalable runner execution.

Spring Boot OAUTH2 MySQL Docker GraalVM

Senior Software Developer

VID

Jun 2021 - Dec 2022 (1 year 6 months)

Developed a reactive Spring WebFlux backend replacement for a social media app, owning architecture-to-production delivery and reducing async complexity while configuring CI/CD on AWS Fargate.

Webflux Project Reactor Cassandra AWS Docker Junit CI CD

Senior Software Developer

Service-Flow Corp

Apr 2018 - Jun 2021 (3 years 2 months)

Developed and maintained microservices for the Oneio product, rebuilt legacy frontend/backend with new microservices and reactive backends, and led prototyping, testing, and deployments to Kubernetes/AWS.

Java 8 11 Spring Boot Project Reactor Angular Kubernetes Docker MongoDB AWS

Senior Software Developer

T-Systems CIS

Mar 2016 - Apr 2018 (2 years 1 month)

Designed and implemented web applications for communications maintenance and cloud billing, led CI automation, ELK configuration, mentoring, and full-stack feature delivery using Grails, Spring Boot, and Vue/Angular.

Grails Groovy Spring Boot AngularJS Vue.Js Jenkins ELK PostgreSQL

Software Developer

Technoserv

Aug 2014 - Mar 2016 (1 year 7 months)

Developed multiple Java web applications including high-performance SOAP search services using ElasticSearch to improve query speed and integrated enterprise systems.

Java Spring Elasticsearch SOAP WildFly