Senior Software Engineer (mfd)

Berlin - Germany

Monthly Salary: Not Disclosed

Posted on: 21 hours ago

Vacancies: 1 Vacancy

Job Summary

At Credibur we are building a debt management platform for non-bank lenders that must work reliably under real operational pressure. As our customer base and data volume grow the hard problems are no longer features but correctness performance and robustness.

We are looking for an experienced backend-focused Software Engineer (m/f/d) who helps us stabilize and scale our core systems without unnecessary complexity.

This role is about building practical reliable solutions to real-world problems.

Tasks

Own backend robustness: Improve and maintain core backend components with a focus on correctness performance and long-term maintainability
Solve complex business logic: Identify and fix edge cases caused by heterogeneous customer data and evolving requirements
Improve database performance: Analyze and optimize slow queries data access patterns and schema decisions as data volume increases
Build pragmatic solutions: Extend existing systems carefully choosing simplicity over premature optimization & abstraction
Collaborate on operations where it matters: Contribute to infrastructure CI/CD observability and deployment improvements that directly impact backend stability and scalability
Work closely with the team: Collaborate with other engineers and product to turn real operational needs into reliable backend behavior

Requirements

Strong problem-solving skills
2 years of experience with Python in production systems
2 years of experience with Django
Hands-on experience with PostgreSQL including data modeling and query optimization
Experience designing and implementing RESTful APIs
Proficient with Git and collaborative workflows (feature branches pull requests code reviews)
Experience writing automated tests to ensure reliability and prevent regressions
Ability to make pragmatic technical decisions avoiding overengineering while maintaining high standards
Experience working with AWS ECS and containerized deployments in production environments
Clear collaborative communication in English
Nice to have: Prior exposure to financial or data-heavy systems

What We Offer

Early-stage fintech startup

Work close to the product the problems and the decisions that shape the company

High-impact visible work

Your work directly affects platform stability scalability and how we grow

Feedback as dialogue not one-way input

We use retrospectives and reviews to openly discuss what worked what caused friction and how to improve collaboration and handovers together

Real focus on development

Regular development talks documented progress and concrete next steps to support your growth

Flexible work setup

Berlin-based or remote within Europe with clear expectations around collaboration

Flexible contract model

Freelance option available for candidates outside Germany. No agencies

Competitive compensation

Based on experience responsibility and impact

At Credibur we believe that diverse teams build better products. We welcome applications from people of all backgrounds regardless of gender age ethnicity disability sexual orientation or religion. If youre passionate about what we do but dont meet 100% of the criteria we still encourage you to apply - we value potential and ambition.

At Credibur we are building a debt management platform for non-bank lenders that must work reliably under real operational pressure. As our customer base and data volume grow the hard problems are no longer features but correctness performance and robustness.We are looking for an experienced backend...