Sr SDE - Full Stack at Nium

Mumbai, Maharashtra, India

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Not SpecifiedCompensation

Senior (5 to 8 years), Expert & Leadership (9+ years)Experience Level

Full TimeJob Type

UnknownVisa

Fintech, PaymentsIndustries

Requirements

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/profiling skills: making code performant, reliable, and resilient
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: Knowledge of both relational (e.g., PostgreSQL/MySQL) and NoSQL (e.g., MongoDB/Redis)
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; advocate for quality
Soft skills: Excellent communication (technical & non-technical), ability to mentor, influence, persuade, and simplify complexity

Responsibilities

Lead delivery of high-impact, large-scale features and systems — from UI through backend, into production
Define and evolve architecture: from UI/UX patterns using Next.js/React to backend services built in Java or Node.js
Handle non-functional requirements: scalability, performance, security, maintainability (think long term)
Mentor and guide while being hands-on: influential in code reviews, designing modules, owning releases
Collaborate across teams (Product, UX, QA, DevOps) and help craft the roadmap: anticipate technical debt, drive build vs buy decisions, champion best practices
Continuously raise the bar: propose new frameworks, tools, infrastructure improvements; help the team evolve

Skills

Next.js

React

Java

Node.js

UI/UX

Scalability

Performance

Security

Code Reviews

Mentoring

Nium

Global platform for real-time payments

About Nium

Nium provides real-time payment solutions that enable businesses to send and receive funds instantly, manage foreign exchange transactions, and prevent fraud. Its platform, powered by a proprietary API, allows banks, fintech companies, and money service businesses to integrate services for efficient cross-border money movement. Nium stands out by offering competitive foreign exchange rates and solutions for corporate purchasing and travel payments. The company's goal is to streamline financial transactions for businesses globally while charging fees for its services.

San Francisco, CaliforniaHeadquarters

2016Year Founded

$305.4MTotal Funding

SERIES_ECompany Stage

Fintech, Financial ServicesIndustries

1,001-5,000Employees

Benefits

Health Insurance

Hybrid Work Options

Paid Vacation

Performance Bonus

Stock Options

Professional Development Budget

Mental Health Support

Risks

Increased competition from Loop and EQ Bank's multi-currency Global Visa Card.

Regulatory challenges in diverse African markets could impact partnership with Ecobank.

Technological integration issues may arise with Partior's blockchain-based payment system.

Differentiation

Nium offers real-time cross-border payments, enhancing speed and efficiency for businesses.

The company provides a proprietary API for seamless integration into existing business systems.

Nium's platform supports multiple payment schemes, including Visa, Mastercard, and Diners Club.

Upsides

Partnership with Ecobank expands Nium's reach to 35 African markets, boosting market presence.

Collaboration with Partior enhances transaction transparency and speed via blockchain technology.

Launch of Diners Club International Card increases flexibility for travel industry customers.

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