Senior Software Engineer (Backend & Cloud

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Since 1988, Bancos has been a trusted partner in the financial sector, developing robust Core Banking Software that our user banks trust. Based in Berlin, we combine decades of banking expertise with a drive for technological excellence. We are actively evolving our platform to meet the future needs of the financial world, and we are looking for a new colleague to join our team in shaping this next chapter.

We are looking for a Senior Software Engineer (f/m/d) who thrives in a modern, cloud-native environment and is eager to leverage cutting-edge tools to drive efficiency.

You will help us design a scalable, containerized platform that ensures the reliability and security our banking clients expect. Beyond traditional coding, we are looking for someone who embraces AI-assisted workflows to accelerate development and elevate testing standards.

You will join us at our Berlin headquarters, working closely with the team to foster a culture of technical excellence and collaboration.

• Core Development: Design, build, and maintain high-performance backend services using modern languages (e.g., Java, Go, or Python) to support critical banking operations.
• AI-Enhanced Engineering: Integrate Agentic AI tools into the development lifecycle to automate routine coding tasks, generate test cases, and optimize refactoring processes.
• Cloud & Dev Ops: Drive the adoption of cloud-native technologies, containerizing applications (Docker), and optimizing CI/CD pipelines.
• Database Excellence: Work with PostgreSQL in a high-load environment, ensuring data integrity and performance.
• Quality & Architecture: Champion code quality and system design, ensuring that our modernization efforts result in a maintainable and future-proof codebase.

• Programming languages: C/C++, Java, Go, 4gl
• CI/CD:
  Jenkins, Git Lab
• Linux-based systems

• Experience: 5+ years of professional software engineering experience, with a strong track record in backend development.
• Tech Stack: Proficiency in modern programming languages (e.g., Java, Go, Python).
  
  Note:
  
  We do not use C#.
• Agentic AI Proficiency: Experience utilizing AI agents and LLM-based tools within the development and testing process (e.g., for code generation, automated unit test creation, or semantic code analysis).
• Modern Tooling: Deep understanding of Containers (Docker/Kubernetes) and CI/CD workflows.
• Database
  
  Skills:
  
  Strong command of SQL, specifically with PostgreSQL
  .
• Work Mode: You enjoy working collaboratively in a team setting. We value face-to-face interaction and require presence in our Berlin office 4 days a week
  , with 1 day of remote work.
• Language: Fluent English is required. German language skills are a "nice to have," but not mandatory.

• Stability & Innovation: Work for a company with a 35+ year track record of success that is actively investing in the latest technology.
• Cutting-Edge Environment: We don't just talk about AI; we integrate it into our daily workflows.
• Impact: Your code will power essential financial services.
• Central
  
  Location:
  
  Our offices are located in Berlin, a mere 5 minutes walk from S-Bahn Hohenzollerndamm.
• Flexible working hours with up to 2 days remote work
• 30 days vacation
• Workation opportunities
• Public transport ticket & travel allowance
• Company pension scheme & capital-forming benefits
• Belonio budget
• Team events & Hacker BBQs

If you're excited about working at the intersection of traditional banking excellence and cutting-edge technology, we'd love to hear from you. At BANCOS, you'll find a collaborative environment where your expertise makes a real difference, working on systems that power critical financial services.

BANCOS is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applications from all qualified candidates regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.