Lead Developer

At Aevi, we're not just a team; we're a vibrant, global community, committed to shaking up the payments industry. Our culture is all about innovation, creativity, and a passion for pushing boundaries. We’re thrilled to welcome new Aevi’ators who vibe with our values and mission and are ready to join us on our journey of transformation and growth. As a Lead Developer , you'll combine hands-on software engineering with technical leadership and people development. You'll play a key role in designing, building and operating the backend services that connect payment terminals with acquirers and processors worldwide. Alongside your technical contributions, you'll help developers grow, guide technical decision-making, and ensure your team delivers reliable, secure and scalable solutions. This role is ideal for someone who enjoys staying close to the code while leading others through mentorship, coaching and collaboration. What you'll be doing: Technical Leadership & Delivery 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. Team Leadership & Development 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. Contribute to performance and development conversations. Support hiring, onboarding and capability building within the team. Foster a collaborative culture built on ownership, accountability and continuous learning. Platform Ownership 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. Translate operational insights into meaningful improvements. Balance feature delivery with technical debt reduction and platform maturity initiatives. Cross-Functional Collaboration Partner with Product, QA, DevOps, Architecture and other engineering teams to deliver high-quality outcomes. Facilitate technical discussions and decision-making. Identify risks, dependencies and trade-offs early. Champion improvements across engineering processes, tooling and ways of working. What we are looking for: Essential Experience 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. Technical Expertise You should have experience with many of the following: 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 NoSQL databases Event-driven and distributed systems Automated testing and CI/CD practices Git-based development workflows Nice to Have Experience within payments, fintech or banking environments. Familiarity with payment protocols such as ISO 8583, IFSF or NEXO. Knowledge of PCI DSS requirements. Exposure to 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. Why not check us out on Glassdoor and hear for yourself what it's like to be an AEVIator! Life at Aevi Being part of Aevi? It’s diving into a space where flexibility, honesty, development, and support are the essentials of our work environment, and we live for a “work smarter, not harder” mindset. At Aevi, we celebrate diversity and inclusivity, firmly believing that our strength lies in our individuality. Our commitment to a better working culture is reflected in our respect and appreciation for each team member, cheering on everyone to just be themselves at work and outside. What's in it for you? - Be part of a dynamic, fun-loving team that values teamwork and flexibility. - Benefit from our unlimited vacation policy, so you can take a breather whenever you want and need it. - Quickly become a key player of our motivated, energetic, and global team. - Thrive in a culture that lets your unique work style shine. - Explore various growth opportunities and level up your career with us. Who are Aevi: Our mission is to build a more open world, where anyone, anywhere, can take or make any kind of payment. Our cloud-based platform lets payments and transaction data flow across all channels and consumer touchpoints. By connecting digital and in-person interfaces, we are committed to creating the best possible customer experience at the point-of-interaction. Today, we operate across Europe, Australia, and the US with offices in London, Prague, and Paderborn. Our Vision and Support: We are setting payments free! Supported by visionary shareholders in the industry like Mastercard and HPE Growth Capital , we stand at the forefront of payment innovation, surrounded by like-minded partners who share our vision for a seamless payment future.