HA

Senior Python Developer

Haeger Consulting bonn Posted 23 Oct 2026 Closing: 22 Nov 2026
Permanent Hybrid Featured
€75 - €110

Role Description & Technical Scope

Responsibilities

  • You work on the planning, design and development of modern web applications in an enterprise environment
  • You develop high-performance backend solutions with Python using frameworks such as FastAPI and/or Flask
  • You create attractive frontends with HTML, CSS and JavaScript as well as modern frameworks like Angular and/or React
  • You develop template-based web applications and implement sophisticated UI concepts
  • You design and implement REST APIs and work on the integration of distributed systems
  • You implement microservice and event‑driven architectures and develop highly available, security‑critical systems
  • You take care of database connectivity and optimization as well as the use of NoSQL technologies
  • You work on platform solutions and developer portals (e.g., Backstage) and optionally on data mesh concepts
  • You actively contribute to DevOps topics and support deployments in cloud and on‑premises environments

Requirements

  • You have at least 3 years of relevant practical experience in planning, design and development of web applications in an enterprise environment
  • You have at least 3 years of hands‑on experience in backend development with Python and solid knowledge of FastAPI and/or Flask
  • You have at least 3 years of experience in frontend development with HTML, CSS, JavaScript and frameworks such as Angular and/or React
  • You have extensive experience in designing and developing REST APIs
  • You are familiar with distributed systems as well as microservice and event‑driven architectures
  • You have experience in designing and implementing solution architectures for highly available and security‑critical systems
  • You have at least 3 years of experience in developing and optimizing database integrations
  • You have at least 2 years of experience with NoSQL databases, including data modeling, migrations and performance optimization
  • Ideally, you bring experience with platform solutions and developer portals (e.g., Backstage). Knowledge of data mesh concepts, data contracts, data governance and data quality is an advantage
  • You have solid practical experience with Kubernetes (including Helm charts) and with GitOps tools such as ArgoCD
  • You have experience operating and deploying applications in cloud and on‑premises environments
  • You have strong knowledge of Git/GitLab, CI/CD processes and Azure DevOps (including deployment pipelines)
  • You are proficient with Linux‑based environments, shell scripting, as well as test automation and the use of appropriate testing tools.

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Key Details
  • Date Posted: 23 Oct 2026
  • Location: bonn
  • Employment: Permanent
  • Workplace: Hybrid
  • Domain: Software Entwicklung
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Employer Profile
HA
Haeger Consulting
Verified Tech Employer

Enterprise technology firm or security consultancy operating across the UK digital defense ecosystem.

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