SDE II - Full Stack Engineer

SourcingXPress; Mumbai; On-site; INR 2,000,000 - 2,800,000; Full time

Job summary

NIUM is seeking an SDE II - Full Stack to join our team in Mumbai. The role focuses on full stack development, collaborating with backend and frontend specialists to deliver robust applications that power cross-border payments platforms.

Ideal candidates have 2-3 years of solid experience in full stack development, with React.js or Next.js for frontend and Java for backend. You will work in a fast-paced, collaborative environment and contribute to high-availability distributed systems.

Qualifications

• 2-3 years of solid full stack development experience.
• Proficiency with React.js or Next.js.
• Experience with Java backend.
• Strong knowledge of CS fundamentals.
• Experience building and operating highly available backend distributed systems.

Responsibilities

• Full Stack feature development.
• Monitor quality, reliability and security of systems.
• Follow engineering best practices.
• Design, analyse, code, test and deploy applications to meet business requirements for large projects.

Skills

Full stack development

React.js

Next.js

Java

CS fundamentals

Distributed systems

Communication skills

Team collaboration

Job description

Company Information

• Company: NIUM
• Website: Visit Website
• LinkedIn: Visit LinkedIn
• Business Type: Startup
• Company Type: Product
• Business Model: B2B
• Funding Stage: Series D+
• Industry: FinTech
• Salary Range: ₹ 20-28 Lacs PA

About the Company

Nium provides global infrastructure for real-time cross-border payments. Our mission is to deliver the global payments infrastructure of tomorrow, today. The 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 an exciting new chapter. March 2026 marked our largest month in our 11-year history with record revenue, 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.

Our payout network spans 190+ countries and 100 currencies, with 100+ corridors in real time. We power seamless transfers to accounts, wallets, cards, support local collections in 35 markets, and as a principal card issuer on Visa, Mastercard, Discover and UATP, we issue over 50 million card tokens each year. Backed by regulatory licenses in 40+ markets, we make it simple for partners to onboard, integrate and scale globally. This scale and innovation earned us recognition as CNBC’s World’s Top Fintech Companies 2025, winner of Best Cross-Border Payments Solution at the PayTech Awards, and inclusion in FXC Intelligence’s 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. The B2B payments market is projected to hit US$175 trillion by 2030, offering ambitious builders a chance to shape the future of global money movement with the scale of a leader and the energy of a high-growth company.

About the Role

We are looking for SDE II - Full Stack to join our team as Full Stack engineer. The engineer will contribute to full stack development.

Key Responsibilities

• Full Stack feature development.
• Proactively identify ways to monitor quality, reliability, and security of our systems.
• Abide by engineering best practices.
• Design, analyse, code, test and deploy applications to satisfy business requirements for large, complex projects.

Requirements

• 2-3 years of solid full stack development experience.
• Experience working with React.js or Next.js.
• Experience working with Java for backend.
• Strong technical knowledge of CS fundamentals.
• Experience building and operating highly available backend distributed systems.
• Strong communication (written and verbal) and interpersonal skills.
• Thrives in a collaborative and fast-paced environment.
• Passion for turning business and product ideas into engineering solutions.