Nium

Sr SDE - Full Stack

Posted 15 Days Ago

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Mumbai, Maharashtra

Hybrid

Senior level

Blockchain • Fintech • Payments • Cryptocurrency

The Role

Lead the development of full-stack remittance products, focusing on architecture, mentoring, delivering features, and driving technical discussions while ensuring quality and performance.

Summary Generated by Built In

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

Experience & Impact
4-6 years (of full-stack software development with real ownership.
Proven track record of delivering production systems (UI + backend + services) end-to-end.
Comfortable leading technical design discussions, making trade-offs, and owning architecture decisions.
Strong debugging/profile skills: you don’t just write code, you make it performant, reliable, and resilient.

Technical Skills

Frontend: Deep experience in React + Next.js (or equivalent SSR/SPA frameworks).
Backend: Strong with Java (Spring Boot, microservices) and/or Node.js services.
Databases: both relational (e.g., PostgreSQL/MySQL) and NoSQL (e.g., MongoDB/Redis) knowledge.
Cloud/Infrastructure: Experience with AWS/Azure/GCP; knowledge of CI/CD, containerization, service orchestration.
Distributed systems awareness: service-oriented architecture, API design, caching, scaling, reliability.
Testing / Quality: Unit, integration, e2e, performance testing. You advocate for quality.
Soft skills: Excellent communication (technical & non-technical), ability to mentor, influence, persuade, and simplify complexity

Nice-to-Have

Experience with TypeScript (especially on the frontend) and backend TypeScript/Node.js.
Familiar with serverless architectures or edge computing.
Built SaaS/B2B platforms, handled multi-tenant systems.
Experience with UX/performance metrics and frontend optimizations (web vitals, bundle size, critical rendering path).
Familiar with modern CI/CD pipelines, IaC (Terraform/CloudFormation), monitoring/tracing tools.

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.

Top Skills

AWS

Azure

Ci/Cd

CloudFormation

GCP

Java

MongoDB

MySQL

Next.Js

Node.js

Postgres

React

Redis

Spring Boot

Terraform

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The Company

713 Employees

Year Founded: 2015

What We Do

Nium is an advanced payments platform redefining the way consumers and businesses send, spend, and receive funds across borders. Nium’s goal is to make the movement of money seamless through being a universal plug for financial services. The company uses agile, elegant, and modular solutions for complex business problems. Be it an Individual, new-age digital bank, or a traditional industry behemoth, Nium prides itself on creating financial infrastructure for every level of sophistication.

Nium’s key solutions:
• Pay-ins
• Pay-outs
• Card issuance
• Banking-as-a-service
• Crypto-as-a-service

We are a global leader in B2B modern money movement
• Launched the world’s first global platform for crypto-as-a-service
• $280M Funding
• Series D
• $2B Valuation
o 130+M End customers
o 190+ Payout markets
o 100+ Supported currencies
• Named on CB Insight’s Fintech 250 List
• Financial Times’ List of Asia-Pacific High-Growth Companies 2021
• Fintech Employer of the Year’ at the 2021 Singapore Fintech Festival
• Best B2B Payment Platform’ at the 2021 Future Digital Awards

Why Work With Us

We, at Nium, are on a mission to transform modern money movement. We are driven by our co-created values of "seek the simple", "make it better" and "win it together".
These aren't just buzzwords; they're how we do business every day and owned by each and every employee at Nium. We create new rules and new possibilities for a world of open money.