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Senior Software Developer (Core Gateway)

payabl.

Frankfurt am Main, Hessen, Germany Hybrid permanent

Posted: January 15, 2026

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Quick Summary

As a Senior Software Developer in the Core Gateway team, you will be responsible for ensuring the stability and performance of our core gateway, working closely with our development team to identify and resolve technical issues, and collaborating with cross-functional teams to deliver high-quality software solutions.

Job Description

payabl. empowers businesses to grow through payments innovation and banking services. Our ambition is to expand our strong portfolio of global financial services we provide to businesses and make them all available in one place on our platform we call payabl.one. As a licensed financial company with principal membership with card schemes, we specialize in global payments and providing businesses with multi-currency accounts.

The role is about:
In the Core Gateway team, you will be part of a team of experts, their sole mission is to ensure Core Gateway stability and performance. The Core Gateway team provides secure, reliable, and fast online payment processing solutions to businesses around the world.

Location: Hybrid in Frankfurt Office or Remote if based over 1 hour away from our Frankfurt office in Germany

Reporting to: Technical Team Lead

What you will do:  

• Implement Microservices in Python in support of the legacy system.
• Design, develop, and maintain server-side components of our payment gateway platform, ensuring high performance, scalability, and reliability.
• Integrate third-party APIs and external services into existing systems to enhance functionality and usability.
• Collaborate with cross-functional teams to gather requirements, define technical solutions, and implement new features.
• Work closely with DevOps to deploy, scale, and maintain applications in cloud environments, with a focus on CI/CD pipelines.
• Contribute to code reviews, providing constructive feedback to peers and ensuring code quality.
• Provide support and maintenance and extend current features.
• Work with Perl legacy system.

What we need:

• Proficiency in Python with 5+ years of working experience.
• Experience with microservices architecture and RESTful API design.
• Strong knowledge of server-side technologies and frameworks such as one of the following: Django, FastApi.
• Familiarity with gitlab CI/CD pipelines.
• Experience with integrating third-party APIs and external services.
• Strong experience in developing microservices.
• Strong experience with Containerization (Docker)
• Familiarity with Cloud techstack (AWS,GCP)
• Experience with high performance distributed systems.
• Experience with payment gateway platforms or similar financial systems is a plus.
• Desired and great if you have Perl, for supporting and maintaining legacy systems. However we are also considering candidates that have a desire to Learn Perl from scratch and work with it.
• Exceptional attention to detail.
• Strong written and verbal communication skills in English.
• A customer-centric, empathetic mindset with excellent listening skills.
• An ability to focus on what counts, creating simple solutions to deliver fast results.

The perks of being a payabl.er

• Competitive Compensation: Step into a role that values your contributions with a market-aligned salary and bonus potential reflecting our annual success.
• Extended Vacation Time: Recharge with 28 vacation days, plus special holidays on December 24th and 31st, ensuring plenty of time for leisure and relaxation.
• Empowered Career Trajectory: Unlock your full potential in a flat-hierarchy setting that fosters rapid professional growth and open dialogue.
• Global Perspectives: Immerse yourself in an international environment, enriching your career with diverse experiences and viewpoints.
• Tech Tailored to You: Craft your perfect setup by choosing between Mac or Windows laptops, enhancing both comfort and productivity.
• Community and Collaboration: Dive into a culture of unity through regular team events that build connections and foster collaboration.
• Hybrid Harmony and Relaxation: Embrace the best of both worlds with hybrid work options and unwind in our relaxation area, complete with a massage chair.

🚀 Hiring Process

Step1: Initial Interview: A 30-40 mins online google interview with a Talent Acquisition Partner team member to explore your experience and career goals.
Step 2: Technical Assessment Interview: A live coding challenge with our team lead and designated field technical experts to assess your technical skills, the interview time will be from 90-180 minutes (Onsite if possible and applicable depending on your location in Germany otherwise Online).
Step 3: Final Behavioral Interview – A 45-60 minute discussion with our CTO and Senior Talent Acquisition Partner. This is your chance to dive deeper into our culture and align on expectations.

Ready to Join Us?
Let's embark on a journey to redefine the landscape of payments together. We're not just offering a role; we're inviting you to be a part of something bigger. Join our team, and let's innovate, disrupt, and lead the future of payments. Together, we can make an impact that resonates. Welcome to the team!

If this role seems like a good match, please submit your resume all applications are treated with the strictest confidentiality. Please note that we may keep your CV for a period of one (1) year for future relevant job opportunities. For more information about how we process your data please see our privacy policy at https://payabl.com/privacy-policy

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