Lead Fullstack Engineer (React+Next.js)

N-iX · LATAM

  • Senior
  • Full-time
  • Posted 2026-06-16
  • Confirmed live on 25 September 2026

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Job description

We are looking for a talented Senior Full-Stack Engineer to join a team building a modern, large-scale platform that powers intelligent agreement management experiences for millions of users worldwide. Our platform is at the heart of a global SaaS product used by more than 1.7 million organizations across 180+ countries. The team develops a unified, widget-based front-end architecture that enables seamless experiences across document creation, sending, signing, and management. By combining scalable engineering practices with AI-powered workflows, we are transforming the way businesses manage their most important agreements. As a Senior Engineer, you will play a key role in designing and developing high-performance, reusable frontend solutions while contributing to backend services and platform capabilities. You will work on complex engineering challenges involving micro-frontends, scalability, reliability, security, and developer productivity.

Responsibilities:

• Design and build scalable, reusable UI components and frontend solutions using React and TypeScript.

• Develop and maintain backend services using Node.js and Express.

• Contribute to a modern micro-frontend architecture and shared platform capabilities.

• Collaborate with cross-functional teams to deliver high-quality features in a fast-paced SaaS environment.

• Write well-tested, maintainable code and contribute to a strong engineering culture.

• Improve performance, reliability, observability, and security across the platform.

• Participate in the entire software development lifecycle, including architecture discussions, implementation, testing, CI/CD, and production releases.

Requirements:

• 8+ years of professional software development experience.

• Strong expertise with TypeScript and React.

• Hands-on experience with Node.js, Express, and modern backend development.

• Experience building reusable frontend components, design systems, or shared libraries.

• Solid understanding of frontend testing practices and tools.

• Experience working on large-scale SaaS products.

• Knowledge of REST APIs and modern web architecture.

• Excellent communication skills and ability to collaborate effectively in distributed teams.

Nice to Have:

• Experience with Next.js.

• Hands-on experience with micro-frontend architecture.

• Experience with gRPC and API integrations.

• Knowledge of JSON Schema or XML Schema.

• Experience with CI/CD pipelines and Azure DevOps.

• Familiarity with Agile and Test-Driven Development practices.

We offer*:

• Flexible working format - remote, office-based or flexible

• A competitive salary and good compensation package

• Personalized career growth

• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

• Active tech communities with regular knowledge sharing

• Education reimbursement

• Memorable anniversary presents

• Corporate events and team buildings

• Other location-specific benefits

*not applicable for freelancers

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