Senior Backend Engineer

Senior Backend Engineer Location: Remote within Europe (Portugal, Ukraine, or Romania preferred) Who We Are Payset is a UK-based international payments solution authorized by the UK Financial Conduct Authority (FCA) as an Electronic Money Institution (EMI). We provide multi-currency accounts and currency exchange services to businesses worldwide, helping them operate seamlessly across borders. As a growing fintech company, we are continuously improving our product technology and expanding into new markets. The Opportunity We are looking for a Senior Backend Engineer to design, build, and scale the core services that power our payments infrastructure. You will play a key role in shaping system architecture, improving reliability, and ensuring our platform remains secure, scalable, and compliant in a regulated fintech environment. You will work in a small, agile product team alongside frontend engineers, DevOps, and product stakeholders. What You’ll Do Design, build, and maintain scalable backend services using Node.js, TypeScript Architect and develop REST APIs and microservices Implement and optimize GraphQL and API Gateway solutions Design and optimize database schemas and queries in PostgreSQL and MongoDB Ensure high performance, availability, and security of services Work closely with DevOps to deploy and manage services on AWS Use Docker for containerization and ensure service reliability Improve backend development standards, architecture, and processes Participate in code reviews and technical discussions Mentor junior engineers and contribute to engineering excellence What We’re Looking For Strong experience with Node.js, TypeScript, and backend architecture Solid experience designing scalable REST APIs and microservices Deep understanding of PostgreSQL and/or MongoDB Experience working with AWS cloud infrastructure Experience with Docker and containerized environments Strong understanding of system design, scalability, and security Ownership mindset and proactive problem-solving skills Excellent communication skills and ability to collaborate cross-functionally Nice to Have Experience in fintech, payments, or regulated environments (EMI, FCA-regulated companies) Familiarity with high-availability systems and financial transaction flows Experience optimizing performance in distributed systems How we work Small and agile product teams Smart, ambitious, and awesome coworkers No unnecessary meetings - we value focus time. Our tech stack includes state-of-the-art tools such as PostgreSQL, MongoDB, React, NodeJS, GraphQL, Cypress, Jest, AWS, and Docker. Want some more context? Dive into the heart of our groundbreaking solutions by exploring our flagship product pages: Whether it's our versatile multi-currency account or our dynamic currency exchange platform. Get acquainted with the faces behind our success by meeting our exceptional leadership team. Explore a treasure trove of insights and updates by delving into our engaging blog posts. What makes us Payset: At Payset, we embody a unique ethos that sets us apart. Working here means embracing an entrepreneurial spirit, a thirst for knowledge, and a commitment to enjoyment with true ownership for what you do. Our team spans the globe, bringing together diverse talents united by a shared passion for delivering unparalleled experiences to our customers. We strive to work with the best talent in the industry, fostering an environment where excellence thrives. In addition to the opportunity to collaborate and learn from top-notch colleagues, we offer a range of benefits designed to support our team members' well-being and professional growth. Diversity At the heart of our team lies a belief in the strength of diversity. It's not just a goal - it's about embracing our differences to fuel our collective power. We work to create an inclusive and fair environment where every individual's unique perspective boosts our innovation. By valuing our diversity, we foster a sense of belonging where everyone plays a vital role in our shared success. Department Research + Development Role Back End Engineer Locations Bucharest Remote status Fully Remote About PaySet Payset.io is a next-generation payment platform streamlining how businesses and individuals send, receive, and manage money globally. We're passionate about simplifying international transactions, breaking down barriers, and offering innovative solutions that empower financial freedom. Founded in 2018