Lead Developer / Software Architect for Cash Management Billing Solution (f/m/x)

We are building a modern billing platform to replace a 12 year old billing solution used by Corporate & FI customers across the group. The new platform will be cloud-native, hosted on AWS and deployed to our Kubernetes environment. It is being developed with a Java Spring backend, Angular frontend and PostgreSQL. We follow an API-first approach, spec-driven development (SpecKit / bMAD) and embrace AI-augmented development practices to increase productivity and quality.

Your mission:

• Own the technical vision and system architecture for the billing platform; design clear module boundaries and a modular architecture.
• Lead a small engineering squad (you + 2 developers) and work closely with 2 BAs, QA/test automation and DevOps.
• Hands-on development in Java Spring; design and maintain REST APIs/OpenAPI specs (API-first).
• Drive Spec-driven Development workflows (SpecKit/bMAD), introduce AI-assisted tools for spec, code and test generation.
• Define and enforce CI/CD, observability, security, performance and deployment patterns for AWS + Kubernetes.
• Perform code reviews, mentor team members, run architecture / design sessions and coordinate with stakeholders.

Your core competencies:

• University degree in Computer Science or equivalent experience.
• 8+ years software development experience; 3+ years as a technical lead / software architect.
• Strong expertise in Java Spring, REST/OpenAPI design, PostgreSQL and cloud-native patterns.
• Practical experience with Kubernetes, Docker, AWS and CI/CD toolchains (e.g., GitHub Actions, Jenkins, ArgoCD) and Helm.
• Familiarity with Angular (collaborating with frontend), test automation practices and DB design/performance tuning.
• Experience with spec-driven development tools (SpecKit / bMAD) or similar is highly desirable.
• Proven experience in designing secure, performant systems in regulated environments (banking/payments/billing is a plus).
• Fluent English (spoken and written), German is a plus.
• Structured, mentoring mindset and strong stakeholder communication skills.

What´s in it for you:

• High impact & modern tech: Shape a core RBI product for Corporate & FI customers, built on a cloud native stack (AWS, Kubernetes) with AI augmented development and room to introduce best practices.
• Flexible work week: Flexible hours, work-from-home options from Austria, and 30 days/year remote work from any EU country.
• Global community: 75+ nationalities, English as the company language, and work permit support. Find out more about international applications here.  
• Career growth: We believe in continuous learning and proactive career development. Take on challenging work that stretches your abilities, attend trainings, and use new technologies to make a lasting impact.
• Stay healthy: Subsidized canteen, well-being programs, check-ups, and sport allowances.
• Save money: Discounts, exclusive banking terms, and a heavily subsidized public transport pass.
• Family support: Child allowances, gender-neutral parental leave, bilingual company kindergarten, and holiday childcare.
• Competitive salary: Starting at EUR 90.000 gross p.a. including overtime, with market-compliant overpayment based on experience and qualifications. We are happy to discuss your actual salary in person.

If you have questions regarding our application process, feel free to check out our FAQ or our page for international applicants.   Your contact: Monique Gramann-Heinrichs Talent Acquisition Team