Lead Developer, Backend Developer, DevOps

At Aevi, we’re a global community dedicated to innovation in the payments industry. We’re looking for a Lead Developer who combines hands‑on software engineering with technical leadership and people development.

What you'll be doing:

• Lead the design, development and evolution of cloud‑native backend services built with Java and Kotlin.
• Contribute hands‑on to coding, architecture discussions and solution design.
• Own the full software development lifecycle, from design and implementation through to deployment and production support.
• Drive engineering excellence through code reviews, testing practices and continuous improvement.
• Ensure services remain scalable, resilient, secure and observable.
• Collaborate closely with Architects, Principal Developers and Product teams to shape technical direction and delivery priorities.
• Mentor and support software engineers in their technical and professional growth; provide regular feedback, coaching and development guidance.
• Help developers prioritise work and focus on the highest‑value initiatives.
• Support hiring, onboarding and capability building within the team.
• Take ownership of the operational health of the services your team supports; monitor performance, reliability and production behaviour; lead incident investigations and root‑cause analysis.
• Partner with Product, QA, Dev Ops, Architecture and other engineering teams to deliver high‑quality outcomes and facilitate technical discussions.
• Champion improvements across engineering processes, tooling and ways of working.

What we are looking for:

• 7+ years of professional software engineering experience.
• Strong experience building backend applications using Java and Kotlin.
• Previous experience leading or mentoring software engineers.
• Hands‑on experience delivering production systems in cloud environments.
• Strong understanding of software design principles and engineering best practices.
• Experience working across the full software development lifecycle.
• Excellent problem‑solving and communication skills.
• Fluent English, both written and spoken.

• Java (17/21) and Kotlin.
• Spring Boot and modern backend frameworks.
• Reactive and asynchronous programming concepts.
• AWS services and cloud‑native architectures.
• Containerisation technologies such as Docker.
• Infrastructure as Code (Terraform or AWS CDK).
• Relational and No
  
  SQL databases.
• Event‑driven and distributed systems.
• Automated testing and CI/CD practices.
• Git‑based development workflows.

• Experience with in payments, fintech or banking environments.
• Familiarity with payment protocols such as ISO 8583, IFSF or NEXO.
• Knowledge of PCI DSS requirements.
• Experience with HSM integrations and cryptography concepts.
• Experience with observability tooling and operational excellence practices.
• Contributions to technical communities, open‑source projects or meetups.

In this role, you'll:

• Deliver robust and scalable payment services used globally.
• Help engineers do their best work and grow in their careers.
• Improve the reliability and operational maturity of the platform.
• Influence technical direction through pragmatic leadership.
• Create an environment where teams can move fast without compromising quality.

Additional Information

• Hybrid working model based from our Czech Republic office.
• Choose the setup that works best for you – Mac, Windows or Linux.
• Occasional involvement in production support activities during business hours may be required.
• This role operates within a PCI DSS‑regulated environment and follows secure development practices.