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Waldemar K.WK

Waldemar K.

Senior Full‑Stack Engineer | React, Vue, Python

€600/day
Dresden, DE
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Waldemar

I was a Senior Full Stack Engineer and Senior Software Engineer at Deutsche Telekom. Today, I am self-employed and build systems that not only work in the demo but also run reliably in production.

With an excellent Master's degree in Applied Computer Science, a Bachelor's degree in Information Technology, and experience since 2013, I combine technical foundations with pragmatic implementation.

My focus is on full-stack applications, scalable APIs, data pipelines, cloud infrastructures, and modern AI integration – from LLM connections and machine learning to process automation.

I am only satisfied when a solution is running in production, is maintainable, and actually relieves the customer of work.
  • German

    Native or bilingual

  • English

    Conversational

  • Russian

    Basic

Can work on-site
Dresden (up to 50km)

Experience

  • WK CodeWorks UG
    Managing Director & Freelance Engineer
    DIGITAL AND IT
    January 2024 - Today (2 years and 7 months)
    01 Dresden, Germany
    - Development of backend services and REST APIs with Python (FastAPI)
    - Building processing pipelines for various data formats
    - Operation and deployment of services in the AWS cloud (EC2, RDS, S3)
    - Connecting databases and integrating ML models into applications; using LLMs (Claude via AWS Bedrock)
    - Full-stack projects and IT consulting for corporate clients
  • Deutsche Telekom AG
    Senior Full Stack Engineer
    TELECOMMUNICATIONS
    July 2023 - January 2024 (6 months)
    - Development of modern web apps with Vue.js and Tailwind CSS
    - Architecture of scalable APIs and frontend components
    - Technical leadership and code reviews in an agile team
  • Deutsche Telekom AG
    Senior Software Engineer
    November 2021 - June 2023 (1 year and 7 months)
    - Design, development, and maintenance of RESTful microservices
    - Security and performance through best practices

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Education

  • M.Sc.
    FernUniversität in Hagen
    2020
    M.Sc.
  • B.Eng.
    DHSN
    2016
    B.Eng.

Skill set

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