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Freelance Senior Software Engineer – Fullstack, TypeScript/React, Go, Python

Backend EngineerSoftware EngineerContractRemoteSeniorTeam 11-50H1B No SponsorCompany SiteLinkedIn

Location

Germany

Posted

107 days ago

Salary

0

Seniority

Senior

Postgraduate Degree5 yrs expExperience acceptedGermanEnglishDockergRPCKubernetesMicroservicesPythonReactTypeScriptGo

Job Description

Freelance Senior Software Engineer – Fullstack, TypeScript/React, Go, Python

OneCareer

• Our platform is growing — we need someone who thinks about the architecture, not just writes code. • You will join an engineering team as an experienced freelancer and drive concrete technical initiatives independently. • Develop, implement, and scale microservices on a Kubernetes cluster • Fullstack development with TypeScript/React, Go, and Python • Build and maintain CI/CD pipelines (e.g., GitHub Actions) and containerization (Docker) • Define and implement API standards, e.g., gRPC or FastAPI • Ensure clean code practices, testing strategies, and repository structure • Advise on architectural decisions, performance optimization, and scalability • Provide technical input to the roadmap and strategic platform development • Establish software engineering and quality assurance standards that the team can adopt • Proactively identify and resolve complex technical challenges • Collaborate across teams to ensure system integrity and consistency

Job Requirements

  • 5+ years of professional experience in software development
  • M.Sc. or PhD in Computer Science or equivalent practical experience
  • Fluent German (written and spoken) and good English skills
  • Experience with microservices, distributed systems, testing, and software engineering principles, especially Clean Code, testing (unit, integration, E2E), code reviews, and repository structure
  • Solid knowledge of frontend and backend technologies, containerization, CI/CD, and API design
  • Experience with scalable processing of large data volumes
  • Hands-on experience with gRPC, REST, FastAPI, Docker, GitHub Actions
  • Strong analytical thinking, problem-solving skills, and teamwork
  • Ability to communicate complex technical issues clearly and implement sustainable solutions

Benefits

  • 100% remote: Work anywhere in Germany — as long as you have an internet connection.
  • 100% digital: Clear processes and modern tools
  • Engagement as a freelancer on an hourly basis
  • Market-appropriate compensation, to be discussed openly in the first conversation
  • Preferably 5 days/week; part-time possible depending on scope
  • Start date: immediately

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