Senior Software Engineer (Full Stack – Frontend Focus)

About the job

As part of Senior Software Engineer (Full Stack – Frontend Focus) in NIUMs core team, you’ll have opportunity to build and maintain scalable, user-centric web applications that support NIUM’s operational workflows. You will take ownership of feature development, contribute to API integration and frontend architecture, and help maintain high standards for code quality, testing, performance, and reliable deployments. **Key Responsibilities** • Design, develop, and maintain scalable web applications using Next.js and the React.js ecosystem, including HTML5, CSS, and JavaScript, with backend services built in Spring Boot. • Build frontend developmental ecosystem and lead the engineering team to ensure high code quality, reliability, performance, and maintainability through best practices, code reviews, and technical guidance. • Collaborate closely with Product Managers and Cross functional teams to translate business requirements into well-defined technical solutions. • Partner with Backend Engineers to design, define, and document API contracts required for feature development and system integration. • Manage and oversee deployment lifecycles, including analysing and coordinating dependencies across multiple services to ensure smooth and reliable releases. • Contribute to and promote testing strategies, including unit, integration, end-to-end testing (e.g., Cypress/Playwright) and QA testing. • Ability to work with AI tools and Agents and offload tasks to them. **Requirements** • Min 3-5 Yrs experience in frontend development. • Strong foundational frontend development skills, including HTML, CSS, JavaScript, and experience working with REST APIs. • Proficiency in modern web frameworks such as Next.js and React.js, including libraries in the React ecosystem. • Experience in debugging and optimizing React applications, identifying performance bottlenecks, and resolving complex frontend issues. • Ability to write clean, scalable, and maintainable code, following best practices and coding standards. • Hands-on experience with full-stack development, collaborating with backend teams and understanding API contracts. • Familiarity with end-to-end testing tools (e.g., Cypress, Playwright) and implementing effective testing strategies is a plus. • Strong problem-solving skills with the ability to analyze complex workflows and contribute to architectural discussions.

Requirements

• Next.js
• React.js
• HTML5
• CSS
• JavaScript
• Spring Boot

Qualifications

• 3-5 years of experience in frontend development

Preferred Technologies

• Next.js
• React.js
• HTML5
• CSS
• JavaScript
• Spring Boot

Benefits

• Competitive salaries
• Performance bonuses
• Sales commissions
• Equity for specific roles
• Medical coverage
• Employee assistance program
• Generous vacation programs
• Flexible working hybrid working environment
• Role-specific training
• Internal workshops
• Learning stipend

About the company

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. Nium holds regulatory licenses and authorizations in more than 40 countries, enabling seamless onboarding, rapid integration, and compliance – independent of geography.