Frontend Developer (React/Next.js)

Timup; Barcelona; Hybrid; EUR 65,000 - 90,000; Full time

Benefits offered by this job

Real ownership and impact

Hybrid-remote flexibility

23 vacation days + birthday off

Job summary

Nemuru is seeking a frontend engineer to own end-to-end frontend features across multiple applications. You will work closely with founders, engineers and product to deliver ambitious ideas with real ownership and impact.

You will build high-performance UIs using React, Next.js and TypeScript, contribute to UI/UX decisions, and create reusable design systems in a cloud-native environment.

Qualifications

• 3+ years of frontend production experience, with focus on React/TypeScript.
• Strong knowledge of modern frontend architecture, SSR/SSG, performance and accessibility.
• Experience building complex frontend apps and integrating with APIs.

Responsibilities

• Design, build, and ship frontend features across multiple applications with end-to-end ownership.
• Understand requirements first, then plan, code, test and deploy.
• Develop high-performance UIs using React, Next.js and TypeScript across a Turborepo monorepo.
• Contribute to UI/UX decisions and publish reusable UI libraries and design systems.
• Collaborate with backend engineers; work with APIs and distributed systems.
• Operate in a cloud-native environment with AWS, Kubernetes, Helm, and Terraform.

Skills

React

TypeScript

Next.js

UI/UX

API integration

Monorepo tooling

AWS

Kubernetes

PHP/Symfony

English communication

Tools

Git

NPM

CI/CD pipelines

Terraform

Kubernetes

Job description

We are sure that you may have constantly heard of payments and digital transformation. We can assure you that this will be a different and exciting story. We are an embedded finance solution that connects sellers, brands or marketplaces to multiple lenders at point of sale. With one simple integration through our API, we offer a complete set of products to our partners, helping them to deploy lending solutions in days/weeks.

Functions and Responsibilities:

You'll own frontend features end to end at Nemuru—from requirements and UI/UX decisions to production. Our product surface is large and context switching is a reality here. Priorities can shift, and we expect you to move between projects confidently while keeping the full picture in scope.

You'll work directly with founders, engineers, and product to push ambitious ideas live. Expect real ownership, responsibility, and impact.

• - Design, build, and ship frontend features across multiple applications, taking ownership from requirements and UI/UX decisions through implementation, testing, and production.
• - Take time to understand requirements before writing a line of code; plan, execute, and test end to end.
• - Build and maintain high-performance UIs using React, Next.js, and TypeScript across multiple applications managed in a Turborepo monorepo.
• - Contribute to UI/UX decisions with a product mindset—think through interactions, propose interface approaches, and bring design sensibility to the features you build.
• - Create and maintain reusable UI libraries, design systems, and published NPM packages.
• - Collaborate effectively with backend engineers and understand how frontend applications interact with APIs and backend services. Experience or familiarity with PHP/Symfony is a plus, but not a requirement.
• - Work with APIs and the services required to integrate frontend applications with the wider product ecosystem.
• - Operate in a cloud-native environment running on AWS with Kubernetes, Helm, and Terraform-managed infrastructure.
• - Write clean, well-tested code—unit, integration, and E2E—and enforce quality through code reviews.
• - Take initiative: identify problems, propose solutions, and drive them to completion without waiting to be told what to do next.

Requirements

We're after builders, not task-takers. People who understand before they act, ship with confidence, and take ownership of outcomes—not just assignments.

3+ years of experience building and shipping production software, with a strong focus on frontend development.

• - Solid command of React, TypeScript, and modern frontend architecture (SSR/SSG, performance, accessibility).
• - Strong experience building complex, production-grade frontend applications.
• - Solid understanding of frontend architecture, component design, state management, API integration, and modern web development practices.
• - Familiarity with scalable software architecture and strong enough fundamentals to understand how frontend applications fit within a broader system.
• - Organized, methodical approach: you read specs, plan before coding, and test what you ship.
• - Proactive and autonomous: you don't sit idle waiting for tasks, you find what needs doing and do it.
• - Ability to context-switch across projects and codebases without losing the bigger picture.
• - Strong understanding of software design principles, CI/CD, clean architecture, and frontend best practices.
• - Git and collaborative development workflows.
• - You use AI tools daily as a force multiplier, not as a last resort. You know how to get the most out of them while keeping full ownership of the output and the decisions behind it.
• - Clear communicator who works well across engineering, product, and design.
• - Fluent in English — our codebase, documentation, and some of our client communication are in English.
• - Have worked with Turborepo, monorepo tooling, or published NPM libraries.
• - Know your way around AWS, Kubernetes, Helm, or Terraform.
• - Have experience with PHP/Symfony or have previously worked across frontend and backend environments.
• - Have experience integrating frontend applications with complex APIs or distributed systems.
• - Have fintech, lending, or payments experience—or are genuinely excited to learn how financial products work.

What we offer

• - Real ownership and massive impact from day one.
• - Competitive comp, permanent full-time contract.
• - Hybrid-remote flexibility.
• - 23 vacation days + your birthday off.

We're an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.