Sr SDE - Issuance ( Backend - Java )

Nium provides global infrastructure for real-time cross-border payments. We were founded on the mission to deliver the global payments infrastructure of tomorrow, today. Our platform enables banks, fintechs, and global businesses to move money instantly, everywhere. Co-headquartered in San Francisco and Singapore with offices in 14 markets worldwide, we are entering one of the most exciting chapters in our journey. In March 2026, we delivered the largest month in our 11-year history with record revenue, record volumes, and EBITDA profitability. Today, Nium moves nearly $60B in payments annually, almost entirely for enterprises, while continuing to strengthen an already healthy balance sheet. It is an incredible time to join us, and we are only just getting started. Our payout network spans 190+ countries and 100 currencies, with 100 + corridors in real time. We power seamless transfers to accounts, wallets, and cards, support local collections in 35 markets, and as a principal card issuer on Visa, Mastercard, Discover, and UATP, Nium issues over 50 million card tokens every year. Backed by regulatory licenses in 40+ markets, we make it simple for our partners to onboard, integrate, and scale globally. This scale and innovation have earned us recognition as one of CNBCs Worlds Top Fintech Companies 2025, winner of Best Cross-Border Payments Solution at the PayTech Awards, and inclusion in FXC Intelligences Top 100 Cross-Border Payments Companies list. In 2024, we raised US$50 million in Series E funding at a US$1.4 billion valuation to accelerate network expansion, product innovation, and talent growth. With the B2B payments market projected to hit US$175 trillion by 2030, Nium offers ambitious builders the chance to shape the future of global money movement with the scale of a leader and the energy of a high-growth company. Role Overview As a Senior Software Engineer at Nium, you will be a key contributor within a cross-functional team, collaborating with stakeholders across the organisation to design, build, and maintain our core platforms. You will leverage your experience to develop robust, scalable solutions to complex challenges, playing a critical role in the ongoing transformation of our technology landscape. In this hands-on role, you will actively contribute to development efforts while mentoring fellow engineers and guiding the team toward high standards of technical excellence. You will take ownership of code quality and foster a culture of continuous improvement through constructive feedback and leadership by example. You will advocate for engineering best practices, drive enhancements to tools and processes, and promote collaboration and knowledge sharing. Based in Mumbai, and working closely with our teams in Malta, you will help lead a talented engineering team in building and maintaining our card issuance capabilities that are shaping the future of the industry. Key Responsibilities Platform & Business Insight Develop and maintain a deep understanding of the company's software platforms, business logic, infrastructure, and delivery processes Technical Leadership Lead the design and planning of technical and product initiatives Make informed engineering decisions aligned with business objectives Act as a subject matter expert and set the benchmark for code quality and best practices Team Contribution & Delivery Collaborate within a cross-functional team to deliver high-quality software solutions Take ownership of the teams output, ensuring adherence to quality and process standards Mentorship & Knowledge Sharing Mentor engineers through code reviews, pair programming, and project leadership Contribute to team development through training sessions, technical talks, and informal mentoring Problem Solving & Process Improvement Identify technical challenges and lead the development of effective solutions Enhance team collaboration by identifying skill gaps or inefficiencies and recommending actionable improvements Communication & Alignment Clearly communicate technical decisions, standards, and processes Foster a culture of transparency, open communication, and shared ownership Talent Development Support recruitment efforts by participating in hiring processes and providing feedback on candidate competencies Required Skills & Experience Software Engineering & Design 4 to 6 years of experience in designing and building robust, scalable software systems Strong passion for engineering and a pragmatic approach to high-quality delivery Up to date with current development trends, technologies, and best practices Solid understanding of modern software engineering methodologies and delivery processes Backend Development Deep expertise in Java and frameworks like Spring and Spring Boot Strong SQL and relational database design skills, including performance tuning and query optimization Proficient in designing and .