Passt das zu Ihnen?
Senior Scala Developer (m/f/d) – Upgrade Project (EN)
[16159]
We are currently looking for a freelance "Senior Scala Developer (m/f/d) – Upgrade Project" for our client in the energy sector. Start: asap End: 30.09.2026 Capacity: 4 days/week Location: remote/once a month Düsseldorf We are looking for a highly experienced Scala expert to independently drive a critical version upgrade project. The main objective is to migrate an existing codebase from Scala 2.12 to Scala 3 while ensuring high code quality and system stability. The role requires a senior developer who is comfortable working autonomously, shaping technical solutions without close supervision, and collaborating directly with stakeholders. Tasks: ·Lead and execute the upgrade from Scala 2.12 to Scala 3 ·Analyze existing code and refactor where necessary to ensure compatibility with Scala 3 ·Maintain and improve code quality across repositories ·Adjust and upgrade dependent libraries in line with security and compatibility requirements ·Work independently without a traditional on-site development team ·Act as a technical sparring partner for the project manager ·Ensure smooth integration within a containerized environment Must-have: ·Expert-level Scala experience, especially with migrations from Scala 2.x to 3.x ·Strong Java knowledge, ideally with experience in version upgrades ·Git (mandatory) ·Maven (actively used in the project) ·Solid understanding of build and dependency management Nice-to-have: ·Experience with sbt ·Familiarity with Azure Pipelines or similar CI/CD tools ·Experience working in cloud environments (AWS or Azure) ·Knowledge of containerized systems (e.g., Docker/Kubernetes) ·Exposure to security tools or vulnerability scanning processes
We are currently looking for a freelance "Senior Scala Developer (m/f/d) – Upgrade Project" for our client in the energy sector.
Start: asap
End: 30.09.2026
Capacity: 4 days/week
Location: remote/once a month Düsseldorf
We are looking for a highly experienced Scala expert to independently drive a critical version upgrade project. The main objective is to migrate an existing codebase from Scala 2.12 to Scala 3 while ensuring high code quality and system stability.
The role requires a senior developer who is comfortable working autonomously, shaping technical solutions without close supervision, and collaborating directly with stakeholders.
Tasks:
- Lead and execute the upgrade from Scala 2.12 to Scala 3
- Analyze existing code and refactor where necessary to ensure compatibility with Scala 3
- Maintain and improve code quality across repositories
- Adjust and upgrade dependent libraries in line with security and compatibility requirements
- Work independently without a traditional on-site development team
- Act as a technical sparring partner for the project manager
- Ensure smooth integration within a containerized environment
Must-have:
- Expert-level Scala experience, especially with migrations from Scala 2.x to 3.x
- Strong Java knowledge, ideally with experience in version upgrades
- Git (mandatory)
- Maven (actively used in the project)
- Solid understanding of build and dependency management
Nice-to-have:
- Experience with sbt
- Familiarity with Azure Pipelines or similar CI/CD tools
- Experience working in cloud environments (AWS or Azure)
- Knowledge of containerized systems (e.g., Docker/Kubernetes)
- Exposure to security tools or vulnerability scanning processes
Evgeniya Petrova