Sr SDE - Full Stack

Nium, the Leader in Real-Time Global Payments

Nium, the leading global infrastructure for real-time cross-border payments, was founded on the mission to deliver the global payments infrastructure of tomorrow, today. With the onset of the global economy, its payments infrastructure is shaping how banks, fintechs, and businesses everywhere collect, convert, and disburse funds instantly across borders. Its payout network supports 100 currencies and spans 190+ countries, 100 of which in real-time. Funds can be disbursed to accounts, wallets, and cards and collected locally in 40 markets. Nium's growing card issuance business is already available in 34 countries. Nium holds regulatory licenses and authorizations in more than 40 countries, enabling seamless onboarding, rapid integration, and compliance – independent of geography. The company is co-headquartered in San Francisco and Singapore.

About the Role

We're building the next wave of remittance products and looking for a seasoned full-stack lead who doesn't just code, but shapes technical direction, leads by example, and elevates the team. If you care deeply about user experience, performance, clean architecture, and shipping with discipline — read on.

Key Responsibilities

• You'll lead delivery of high-impact, large-scale features and systems — from UI through backend, into production.
• You'll define and evolve architecture : from UI / UX patterns using Next.js / React to backend services built in Java or Node.js.
• You'll handle non-functional requirements : scalability, performance, security, maintainability (i.e., you'll think long term, not just ship fast).
• You'll mentor and guide while still being hands-on : influential in code reviews, designing modules, owning releases
• You'll collaborate across teams (Product, UX, QA, DevOps) and help craft the roadmap : anticipate technical debt, drive build vs buy decisions, champion best practices.
• You'll continuously raise the bar : propose new frameworks, tools, infrastructure improvements; help the team evolve.

Requirements

Technical Skills

Nice-to-Have

What we offer at Nium

We Value Performance :   Through competitive salaries, performance bonuses, sales commissions, equity for specific roles and recognition programs, we ensure that all our employees are well rewarded and incentivized for their hard work.

We Care for Our Employees :   The wellness of Nium'ers is our #1 priority. We offer medical coverage along with 24 / 7 employee assistance program, generous vacation programs including our year-end shut down. We also provide a flexible working hybrid working environment (3 days per week in the office).

We Upskill Ourselves : We are curious, and always want to learn more with a focus on upskilling ourselves. We provide role-specific training, internal workshops, and a learning stipend.

We Celebrate Together :   We recognize that work is also about creating great relationships with each other. We celebrate together with company-wide social events, team bonding activities, happy hours, team offsites, and much more!

We Thrive with Diversity :   Nium is truly a global company, with more than 33 nationalities, based in 18+ countries and more than 10 office locations. As an equal opportunity employer, we are committed to providing a safe and welcoming environment for everyone.

For more detailed region specific benefits :   https : / / www.nium.com / careers#careers-perks

For more information visit www.nium.com

Depending on your location, certain laws may regulate the way Nium manages the data of candidates. By submitting your job application, you are agreeing and acknowledging that you have read and understand our  Candidate Privacy Notice  located at  www.nium.com / privacy / candidate-privacy-notice .

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Skills Required

Java, Performance Testing, Reliability, Postgresql, Node.js, Spring Boot, API Design, Scaling, Redis, React, Caching, Gcp, Mysql, containerization , Mongodb, Azure, Aws