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Hi, I’m Yaroslav Kholodov, a Senior Software Engineer with extensive experience in backend and full-stack development in production environments. I’ve delivered across distributed systems, migrations, integrations, and ongoing development of stable platforms, collaborating closely with product and operational teams. I enjoy working across backend APIs and frontend interfaces to deliver end-to-end features.…Hi, I’m Yaroslav Kholodov, a Senior Software Engineer with extensive experience in backend and full-stack development in production environments. I’ve delivered across distributed systems, migrations, integrations, and ongoing development of stable platforms, collaborating closely with product and operational teams. I enjoy working across backend APIs and frontend interfaces to deliver end-to-end features.

Yaroslav Kholodov

Full Stack Developer, Web Developer, Back-End Developer, +1

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Hi, I’m Yaroslav Kholodov, a Senior Software Engineer with extensive experience in backend and full-stack development in production environments. I’ve delivered across distributed systems, migrations, integrations, and ongoing development of stable platforms, collaborating closely with product and operational teams. I enjoy working across backend APIs and frontend interfaces to deliver end-to-end features.…Hi, I’m Yaroslav Kholodov, a Senior Software Engineer with extensive experience in backend and full-stack development in production environments. I’ve delivered across distributed systems, migrations, integrations, and ongoing development of stable platforms, collaborating closely with product and operational teams. I enjoy working across backend APIs and frontend interfaces to deliver end-to-end features.

Available to hire

Hi, I’m Yaroslav Kholodov, a Senior Software Engineer with extensive experience in backend and full-stack development in production environments.

I’ve delivered across distributed systems, migrations, integrations, and ongoing development of stable platforms, collaborating closely with product and operational teams. I enjoy working across backend APIs and frontend interfaces to deliver end-to-end features.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

German

Fluent

English

Intermediate

Russian

Fluent

Ukrainian

Fluent

Work Experience

Senior Full-stack Developer at Tool Sense

September 1, 2023 - November 1, 2025

Customer-facing product engineering; Integrations; Backend migration. Delivered fast-line engineering across production systems, resolving customer-reported issues with high SLA expectations. Implemented multiple third-party system integrations tailored to enterprise customer requirements. Contributed to migration from Express.js to NestJS, improving maintainability and architectural consistency. Worked on frontend features using React and Vue.js, including state management and API integration. Worked with GraphQL APIs using Apollo GraphQL for frontend-backend data integration.

Senior Software Developer at Connecting: media GmbH

July 1, 2013 - August 1, 2023

Full-stack delivery; Automation; Observability; Mixed infrastructures. Delivered customer-specific software across web development, custom platforms, and low-level components. Supported hardware product with custom firmware interfaces and web tooling. Applied orchestration and monitoring tooling (Ansible/SaltStack, Grafana, Prometheus) to deploy and operate solutions. Deployed and maintained mixed Linux-based infrastructures. Contributed to frontend interfaces for customer-specific platforms using modern JavaScript frameworks.

System Administrator at Donau Commodities GmbH

April 1, 2008 - August 1, 2010

Heterogeneous infrastructure; AD/FreeBSD services; Scripting. Administered heterogeneous environments (Microsoft AD, FreeBSD-based web/mail services, network hardware). Developed shell scripts for automation and internal infrastructure tasks.

Freelance Web Developer at Freelancing (Fiverr / Upwork)

May 1, 2010 - January 1, 2012

Delivered small-to-mid web development projects for international clients.