Job
- Level
- Senior
- Job Field
- Back End
- Employment Type
- Full Time
- Contract Type
- Permanent employment
- Location
- Hamburg
- Working Model
- Hybrid, Onsite
Job Summary
In this role, you will develop robust .NET/C# services, extract functionalities from existing products, and optimize APIs while working closely with your team and leveraging modern technologies.
Job Technologies
Your role in the team
- As a Senior Developer, you work on central, cross-product core services of the everii Group. In close collaboration with other developers, you develop and maintain services that are used by multiple products and form a stable technical foundation for our platform.
- Your focus is on extracting existing functionalities from individual products, providing them as standalone services, and reliably further developing them — always with an eye on performance, stability, and maintainability.
- You create technical concepts, implement them, and actively contribute to the further development of our system landscape.
- Your focus is on .NET/C#. Since we also use Ruby on Rails, you will be involved there over time — prior experience is not required, curiosity is.
- Service Development: Implementation and maintenance of cross-product core services for all everii products - e.g., OCR services for invoice processing from PDFs via AI, e-invoice services for electronic invoicing in various countries, as well as other product-related services.
- Service encapsulation: Extraction of functions from individual products and provision as standalone, reusable services.
- AI & Innovation: Active use and management of AI tools and agents to support development processes.
- Quality & Testing: Automated tests, code reviews, and continuous improvement of code quality and developer experience.
- APIs & Integrations: Development and enhancement of REST and GraphQL APIs, including authentication (OAuth, JWT) and documentation (Swagger/OpenAPI).
- Operations & Monitoring: Responsibility for stable and secure services, including monitoring (Grafana, Victoria Logs & Metrics) and troubleshooting along our CI/CD pipelines (GitHub Actions, Docker).
- Technical concepts: Development and implementation of technical concepts as well as active exchange on architecture and solution approaches within the team.
- Collaboration: Close cooperation within the development team as well as technical exchange on architecture and solution approaches.
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Our expectations of you
Qualifications
- Tooling: Proficient in Git as well as IDEs such as Visual Studio, VS Code, or JetBrains Rider.
- Databases: Knowledge of PostgreSQL, MS SQL, or other relational databases.
- Performance & Caching: Knowledge of performance optimization and caching strategies.
- AI Skills: Open and confident handling of AI tools and agents - AI is your best buddy.
- Testing & CI/CD: Routine with automated testing as well as GitHub Actions, Docker, and container-based deployment.
- System Basics: Basic knowledge of working with Linux servers and container-based setups.
- Quality & Pragmatism: Maintainable, well-thought-out code - without patchwork, but with healthy pragmatism.
- Curiosity & eagerness to learn: Enjoyment in discovering and experimenting with new technologies.
- Team spirit: Open-minded, team player, mastering context switching.
- Communication: Communicate clearly, give and receive feedback, and engage in constructive discussions.
- Languages: Very good German and English, both written and spoken.
Experience
- Stack Fit: Solid backend experience in .NET Core (including Entity Framework Core, Hangfire) - you are familiar with the .NET world and write C# with conviction.
- API competence: experience with REST and GraphQL APIs as well as API authentication (OAuth, JWT) and documentation (Swagger/OpenAPI).
- Background job processing: experience with Hangfire (.NET).
- SaaS experience: Ideally, you have already worked on a SaaS product that is in active use.
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What we offer
- Individual development: space for autonomous work, scope for creativity, and continuous learning.
- Smart Work: Modern technical equipment, hybrid work model, and trust-based working hours.
- Feel-Good atmosphere: Fresh fruit, coffee, chilled drinks, and weekly communal breakfast - right in the heart of Hamburg or Frankfurt.
- Tech Stack & Team: Modern tools and technologies in a product-oriented team with short decision-making processes.
- Stability: Permanent full-time employment, starting immediately.
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Benefits
Higher Take-Home Pay
Topics You Will Work On
Job Locations
About Your Employer
everii Group GmbH
The everii Group GmbH offers innovative PSA solutions that help companies improve their operations and work more efficiently. With a broad customer base of over 13,000 worldwide, the company is a trusted partner for agencies and IT firms.
Description
- Company Type
- Established Company
- Working Model
- Hybrid, Onsite
- Industry
- Internet, IT, Telecommunication
Senior Developer - .NET / C#
- Location
- Hamburg
- Working Model
- Hybrid, Onsite
- Diversity
- Open for all genders
