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Walk us through your project in 30 minutes. A senior U.S. engineer maps what to build, what it takes, and what it costs.

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Kirill T.
Available

Kirill T.

Senior Python & AI Engineer | Full-Stack (Python, Node.js, React)

Germany 🇩🇪
English (B2)

Short bio

Full-Stack Engineer with 10+ years shipping scalable web platforms; strong backend and AI focus (Python 5+, AI 2+ years). Builds production LLM applications (OpenAI & Claude APIs, LangGraph, RAG, vector databases) on Python (FastAPI, Django) and Node.js. Develops and optimizes complex AI algorithms, designs architectures for AI-based systems, and validates algorithms via modern testing and simulation, with high awareness of safety standards for safety-critical (medtech) environments. Contributed to a company’s Power BI; architects systems from scratch and mentors teams; strong analytical and problem-solving skills.

Tech stack

Main technologies
PythonNode.jsReactFastAPIDjangoOpenAILangGraphPyTorchTensorFlowTypeScriptJavaScriptAWSDockerKubernetesTerraformGitHub ActionsGitlabJenkinsGit

Work experience

  • Senior Full-Stack Developer03.2022 – Present

    Led a full rebranding and new-feature delivery for a high-traffic e-commerce platform, improving usability.

    Responsibilities:
    • Built and maintained Python (FastAPI) and Node.js (NestJS) backend services, including GIS-driven features using Leaflet.js.
    • Prototyped LLM-powered internal tooling (OpenAI/Claude APIs, RAG) automating content and support workflows.
    • Mentored 2–3 junior developers and improved team workflows, code quality, and delivery speed.
  • Senior Full-Stack Developer02.2020 – 03.2022

    Developed and certified data visualizations for the Power BI platform used by enterprise customers worldwide.

    Responsibilities:
    • Modernized legacy visuals with TypeScript, React, and D3.js, improving rendering performance.
  • Senior Full-Stack Developer01.2018 – 02.2020

    Built a new admin-panel frontend from scratch with React, Redux, and TypeScript for internal platform services.

    Responsibilities:
    • Integrated with backend and third-party services; delivered React Native components and unit/UI test coverage.
  • Full-Stack Developer08.2015 – 01.2018

    Developed a performance testing and benchmarking tool for UI components and widgets.

    Responsibilities:
    • Delivered banking features on a React/Redux + Node.js/Express + PostgreSQL stack; resolved critical defects.
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