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Full-stack engineer in Barcelona (10+ yrs). Python/Django/DRF/Celery + TypeScript/Next.js, Docker, Selenium automation. Recent remote work: PASSNFLY (backend + scraping automation) and Skiplabs (reactive full-stack / TypeScript). I ship end-to-end, write clear English, and stay hands-on when production needs fixing. CET-friendly, remote-ready.…

Andrey Gritsaenko

Full Stack Developer, DevOps Developer, Back-End Developer, +3

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Full-stack engineer in Barcelona (10+ yrs). Python/Django/DRF/Celery + TypeScript/Next.js, Docker, Selenium automation. Recent remote work: PASSNFLY (backend + scraping automation) and Skiplabs (reactive full-stack / TypeScript). I ship end-to-end, write clear English, and stay hands-on when production needs fixing. CET-friendly, remote-ready.…

Available to hire

Full-stack engineer in Barcelona (10+ yrs). Python/Django/DRF/Celery + TypeScript/Next.js, Docker, Selenium automation. Recent remote work: PASSNFLY (backend + scraping automation) and Skiplabs (reactive full-stack / TypeScript). I ship end-to-end, write clear English, and stay hands-on when production needs fixing. CET-friendly, remote-ready.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Russian

Fluent

Spanish; Castilian

Advanced

Ukrainian

Advanced

Hebrew (modern)

Beginner

Work Experience

AI & Automation (LLM-based workflows), Infrastructure & DevOps

January 1, 2025 - January 1, 2026

Developed and maintained LLM-based automation workflows, using Selenium, Tesseract OCR, and computer vision for process automation. Worked on infrastructure and DevOps using Linux, NGINX, Docker, Kubernetes, and AWS, with CI/CD support via Jenkins.

AI & Automation

January 1, 2025 - January 1, 2026

Worked on LLM-based automation workflows including Selenium automation and Tesseract OCR, plus computer-vision-driven automation. Also contributed to infrastructure and DevOps using Linux, Nginx, Docker, Kubernetes, microservices, AWS, and Jenkins.

Full-Stack Engineer, FrontoAI at FrontoAI

January 1, 2025 - January 1, 2026

Built production-ready Voice AI agents and an agentic workflow system. Developed full-stack applications using Python, TypeScript, React, Next.js, and Node.js; integrated LLMs, speech-to-text (STT), text-to-speech (TTS), telephony, and external APIs. Designed scalable backend services for automation and AI orchestration.

Full-Stack Engineer at FrontoAI

January 1, 2024 - January 1, 2026

Built production-ready Voice AI agents and agentic workflows. Developed full-stack applications using Python, TypeScript, React, Next.js, and Node.js. Integrated LLMs plus speech-to-text (STT), text-to-speech (TTS), telephony, and external APIs. Designed scalable backend services for automation and AI orchestration.

Back-End + Selenium, Seniority at PassNf

January 1, 2024 - January 1, 2025

Worked on backend automation. Built and maintained Selenium automation scripts, using Python and Flask. Used Docker and AWS for deployment. Utilized MySQL for data persistence and maintained automated testing and reliability.

Backend + Selenium, Seniority at PassNfFly

January 1, 2024 - December 31, 2025

Worked on backend tasks and built/maintained Selenium automation scripts. Used Python, Flask, Selenium, Docker, AWS, and MySQL to support automation and testing workflows.

Full-Stack Developer, Consultant at Skiplabs

January 1, 2023 - December 31, 2024

Built an open-source full-stack web examples suite using a new skip/re-activ e framework and LLMs. Worked with TypeScript, JavaScript, Python, React, Node.js, Django, Docker, Kubernetes, and PostgreSQL, contributing to scalable example implementations and integrations.

Full-Stack Developer at Freelance

January 1, 2023 - December 31, 2023

Built scalable, well-tested, well-documented web and automation applications using Python (Django, Flask, FastAPI), JavaScript/TypeScript (React, Redux, Node.js, Express, NestJS, Next.js) and C++ skills. Delivered production-ready features and automation workflows with strong attention to detail and collaborative problem solving.