(Senior) Fullstack Engineer, Integrations

About PayrailsPayrails is a global payment software company helping leading enterprises to take control of their payment operations and maximize performance. With deep experience in the payments space and firsthand knowledge of merchants' challenges, we’ve seen how fragmented, complex, and inefficient these systems can become. Now, we are setting a new industry standard for how enterprises around the world manage and optimize payments, with more control, visibility and flexibility than ever before.Our vision is to reimagine payments from the ground up. We are building a deeply integrated meta layer that spans the entire payment lifecycle with a modular architecture. This helps us give leading brands building blocks to craft solutions to most complex operational challenges, tailor seamless customer experiences and grow their business.We are backed by some of the world’s top investors including Andreessen Horowitz, HV Capital, EQT Ventures and General Catalyst, who share our mission to simplify payment complexity globally.At Payrails, we’re committed to building a team of exceptional people - not just talented, but driven to build, solve, and deliver at the highest level. Excellence isn’t just a value here; it’s a way of working. We believe that great people thrive in environments where there’s trust, clarity, and shared purpose. We work openly and collaboratively, with deep respect for each other’s craft. Everyone is encouraged to understand the bigger picture - what we’re building, why it matters, and what stands in the way. When people have that context, they move faster, take ownership, and make better decisions. We care about creating a culture where people feel inspired to do their best work and a deep sense of responsibility to help us bring our vision to life. Success at Payrails means staying focused on the problems that matter most, and executing with purpose.Your teamPayrails is a true tech company: our Product is designed by engineers for engineers. We believe in quality before delivery: our mission is to provide an outstanding Payment experience with a strong eye on automation, resilience, and scalability. Our engineering culture is focused on 3 main pillars:We aim for operational excellence We promote open communication and quick feedbackWe share knowledge and learn continuouslyOur tech team offers you the chance to work alongside a group of highly ambitious and knowledgeable Engineers, while being faced with complex problems that affect customers on a global scale.How you will make an impactYou will design, develop, test, deploy, and maintain fullstack software in a thriving, fast-paced environment. You will manage individual project priorities and deliverables while collaborating with a team that values knowledge sharing and cross-functional learning. You will stay up to date with the latest trends in frontend and backend technologies, ensuring the stack remains modern and effective. You will work within your cross-functional team to uphold the highest technical standards across the entire product, from user-facing components to backend systems. What we are looking forYou have 5+ years of experience in fullstack development, preferably in a growth-focused or product-driven environment. You’re proficient in TypeScript, with deep experience in Angular and Angular Material (or similar modern frontend frameworks). You have strong backend development skills, including building and maintaining APIs as well as working with databases (SQL/NoSQL). You have a solid understanding of A/B testing methodologies and experiment-driven development. You’re comfortable optimizing queries, managing APIs, and handling performance issues at scale across both frontend and backend systems. You have a proven track record of owning and delivering solutions end-to-end, from UI design through backend integration. You have exceptional communication skills, with the ability to clearly articulate complex concepts to both technical and non-technical teams. What we offerHigh impact and high velocity environment with the most talented and ambitious people you will ever work withA chance to shape the story of a company and a category from the ground upReal ownership. You’ll have the freedom and trust to build, test, and take leadA product used by the best brands around the worldVisa and relocation support for you and your family where requiredHybrid working with an office in the heart of BerlinRegular team events, activities and off-sitesDiscounted Urban Sports Club membershipCompetitive salary and equity package27 days of annual paid vacation