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Sergei FedotovSF

Sergei Fedotov

Full-stack Engineer & Product Builder | SaaS, APIs

€350/day
Berlin, DE
15+ years

Average response time: 1 hour

About Sergei

I'm Sergei Fedotov, a CTO/CPO with 20+ years of experience launching tech products — from idea to scale. I specialize in MVPs, SaaS platforms, AI automation, and marketplace solutions.

I've led the development of:
-Express Market– a fast-growing multi-category marketplace for local artisans and farmers
-Milolepo– Serbia’s largest handmade marketplace (2,000+ sellers)
-B2BForce– a SaaS platform for automated LinkedIn sales with integrated AI
-RestoGrand– a loyalty and online ordering platform for restaurant chains
-MyKuvar– a hyperlocal food delivery service connecting home chefs and customers
-SkillFactory– an AI-based learning assistant with real-time feedback
-Thermopack Digital Twin– a manufacturing optimization engine using simulation & algorithmic planning

My stack includes PHP, Laravel, Java, Node.js, Python, PostgreSQL, and AI tools like OpenAI/GPT. I deliver production-ready systems with clean architecture, deep API integrations, and smart UX — from Telegram bots to automated content pipelines and localization engines.

Let’s build something powerful and scalable — together.
  • Russian

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Mars
    CTO / CPO
    July 2025 - July 2025
    We built a digital simulation system for production lines that lets managers make decisions before investing in equipment or staff. The model simulates each operation, finds bottlenecks, calculates optimal utilization for people and machines, and proposes scenarios to increase output and reduce unit costs. The rollout delivered up to an 18% output increase without extra investment and gave leadership solid data instead of guesswork.
    Python Technical project management Tech Lead Business analysis
  • Express.Market
    CTO / CPO
    E-COMMERCE
    May 2025 - May 2025
    Bucharest, Romania
    Express.Market is a universal marketplace with online payments, delivery, and a loyalty system that lets companies scale quickly in e-commerce. We created an ecosystem: from logistics and fiscalization integrations to flexible analytics and sales management. The solution gives businesses transparent control of each transaction, easy assortment management, and scaling of the customer base without losing service quality.
    Delivery Management Product management Start-up
  • Milolepo (Live)
    CTO / CPO
    E-COMMERCE
    September 2024 - Today (1 year and 9 months)
    Serbia
    I fully developed and launched Milolepo — Serbia’s largest handmade classifieds platform. Implemented product listings, related items, cart, checkout, favorites, seller pages, stock tracking, CSV import, Google login, and mobile UI. Integrated AI for search, product descriptions, multilingual UI, chat translation, and SEO. Added Stripe, PayPal, discounts, seller promotions, and analytics. Scaled via SEO and paid ads without external funding.
    Website: milolepo.com

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Education

  • Engineer's degree
    Ryazan State Radiotechnical University (former Academy)
    2000
    Engineer's degree

Skill set

Categories