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Malt Strategy
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Malt Tech Trends 2026
Sergei BocharovSB

Sergei Bocharov

Senior Full-Stack Engineer

€300/day
Porto, PT
8-15 years
Node.js
Python
GO
AI Automation
Microservices

Average response time: 1 hour

About Sergei

Senior Full-Stack Engineer

12+ years shipping production systems across SaaS platforms, booking marketplaces, and document processing services handling millions of requests per day. I cover the full range from backend architecture and distributed pipelines to frontend delivery — with a natural focus on backend, platform design, and AI integrations. I take end-to-end ownership from design to production, whether starting from scratch, modernizing a legacy codebase, or integrating AI into an existing product.

KEY SERVICES
  • Full-stack product development: backend APIs, frontend (Vue.js / Nuxt.js), end-to-end delivery
  • Distributed systems, async pipelines, and event-driven architecture
  • Serverless and edge architecture on AWS and Cloudflare
  • AI and LLM integrations: RAG pipelines, agent workflows, OpenAI API, self-hosted models
  • Platform migrations and legacy system modernization
  • MVP development and early-stage product architecture
  • Performance optimization, reliability engineering, and cost reduction
If you have a backend system that needs to scale, a migration that keeps getting deferred, or an AI integration you want to work reliably in production - feel free to reach out.
Hotel industry
Digital and IT Services

  • Russian

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • IcecreamApps Ltd. (PDFCandy),
    Senior Full-Stack Engineer
    DIGITAL AND IT
    January 2024 - Today (2 years and 7 months)
    Limassol, Cyprus
    Team: Cross-functional team of 7 developers, QA, DevOps, and PM — distributed SaaS platform (~1M requests/day, 2M documents/month); backend services, incident resolution, and architectural improvements Technologies: TypeScript / JavaScript (Node.js, Preact.js), PHP, Python (FastAPI), Golang, MySQL, Docker, Nginx, Cloudflare Workers
    • • Reduced service failure rate from 10–12% to 2–3% through refactoring and TDD adoption
    • • Improved service performance up to 10x by introducing asynchronous and parallel processing pipelines
    • • Reduced web application loading time 5x by integrating edge caching with Cloudflare Workers
    • • Built a Chrome extension to increase user retention by up to 20%
    • • Delivered a replacement billing system after provider failure, restoring sales continuity within days
    • • Architected a multi-format file conversion MVP supporting 1,300 format pairs (documents, e-books, images, video), scaled to 1M+ monthly users
    • • Built an automated E2E regression pipeline (Playwright + Docker + Node.js) covering payment simulations, SMS, and email flows; mentored QA engineer migrating hundreds of manual test cases to Cypress, reducing full regression to ~1 hour across all 1,300 converters
    • • Used AI agents to generate test files across all 1,300+ format pairs — a task infeasible to complete manually —
    enabling full regression coverage that would otherwise have required months of manual file preparation
    Node.js Python AI Automation GO PHP
  • Exceptional Holidays BV (bookahouseboat.com),
    Lead Engineer / Acting CTO
    HOSPITALITY
    January 2016 - January 2024 (8 years)
    Amsterdam, Netherlands
    Team: Team of 3 developers, 3 content managers, and 2 co-founders — architecture, full-stack design, backend domain logic, technical review Technologies: TypeScript / JavaScript (Node.js, Vue.js), PHP (Symfony), Python, Golang, MySQL, Redis, Docker, AWS, Cloudflare Workers
    • • Transformed a zero-revenue agency site into a booking marketplace with EUR 1M annual turnover within one year
    • • Designed and implemented core booking and calendar synchronisation logic with high-concurrency conflict handling
    • • Migrated image processing pipeline to AWS Lambda (Node.js) + Cloudflare Workers: processing time from 20 min to <1 min, failure rate from 10% to 0%, delivered image size reduced 30%, AWS costs reduced 3x
    • • Built AI-powered tools for listing enhancement and host migration, reducing onboarding time by 5x
    • • Delivered a voucher-based refund system during COVID within two weeks, later evolving into a scalable promotions and gift card subsystem
    PHP Node.js VueJS Python GO
  • Ticketstream s.r.o. (ticketstream.cz),
    Full-Stack Engineer
    ENTERTAINMENT AND LEISURE
    January 2014 - January 2016 (2 years)
    Prague, Czechia
    Team: Team of 2 developers, QA, DevOps, content managers, and PM — backend booking logic and transaction flow reliability Technologies: PHP, JavaScript, PL/SQL, OracleDB
    • • Increased booking throughput from 5 to 100 purchases per second by eliminating database locking and introducing atomic transaction logic
    • • Identified and resolved critical security vulnerabilities including payment bypass scenarios
    • • Implemented a virtual waiting room mechanism to handle peak traffic during high-demand ticket releases
    PHP Oracle

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Education

  • Professor of Management and Risk Management
    MESI
    2014
    Professor of Management and Risk Management
  • PhD in Business Administration and Management
    MESI
    2007
    PhD in Business Administration and Management
Check out Sergei's education

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