Senior Python Developer

Haeger Consulting

Senior Python Developer at Haeger Consulting designing modern web applications. Involvement in backend solutions with Python and frameworks like FastAPI and Flask, along with frontend tasks.

Posted 6/16/2026full-timeBonn • 🇩🇪 GermanySeniorWebsite

Tech Stack

Tools & technologies

AngularAzureCloudFlaskJavaScriptKubernetesLinuxNoSQLPythonReact

About the role

Key responsibilities & impact

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

What you’ll need

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.

Benefits

Comp & perks

Innovative projects and creative environment: You work on exciting client projects in a creative and dynamic work environment with plenty of room for your own ideas and personal development.
Agility: You will be part of a team that works agilely and flexibly to always achieve the best results.
Flexibility: Shape your workday according to your needs – with the option to work from home and flexible working hours.
Opportunity to influence: You have the chance to actively shape and expand our data domain.
Share knowledge & grow together – You benefit from intensive internal knowledge transfer and have the opportunity to actively contribute to the development of the team—both professionally and personally.
Team spirit: In our open and collegial environment, teamwork is a priority – we believe the best ideas emerge through collaboration. We value diversity and promote a culture of inclusion. Everyone is warmly welcome here!
Attractive benefits: You will receive a competitive salary, various benefits and fun employee events.

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Hard Skills & Tools

PythonFastAPIFlaskHTMLCSSJavaScriptAngularReactREST APIsNoSQL