Senior Full-Stack Engineer

At Lokalise, we make it easy and profitable for businesses to expand into new markets. Our AI-powered localization platform helps companies manage both software and marketing content from a single, unified environment — ensuring every team speaks with one voice across every language and channel.

By automating workflows, integrating with over 60 tools, and centralizing translation memory and terminology, Lokalise enables product, engineering, and marketing teams to collaborate without friction and launch globally up to 10× faster and at 80% lower cost.

Trusted by thousands of businesses across more than 100 countries, Lokalise empowers millions of people worldwide to use digital services in their native languages. Backed by a customer-loved support team, our platform fits seamlessly into your design, development, and content workflows, helping you scale with consistency and control.

While our company operates exclusively on a remote basis, you must reside and have the legal right to work in one of the following countries: the United Kingdom, Latvia, or Spain.

We're looking for a Senior Full-Stack Engineer to join our Engineering team and help build and improve the products and systems behind Lokalise. You'll work closely with Product, Design, other engineers, and stakeholders to identify and solve meaningful customer problems, improve existing experiences, and shape what we build next.

Each of our engineering teams owns a product domain at Lokalise, from vision to delivery. Teams talk to customers, uncover their pains and needs, define their own goals, and choose how to solve the problems that matter most. We’re hiring across multiple domains, so you’ll own a real piece of the product and see your impact firsthand.

We're building an AI-native engineering culture where engineers take ownership of problems, not just implementation. We expect you to question assumptions, challenge decisions, contribute to product direction, and find better ways to solve customer problems.

You'll use AI throughout the development process to move faster without compromising quality. Your responsibility doesn't end when code reaches production. You'll care about whether what we built actually works, delivers value, and solves the problem we set out to address.

• Own problems end to end, from discovery and design to production and iteration. You take initiative instead of waiting to be told.
• Build, test, and maintain features across the stack, with clean, scalable, and maintainable code.
• Build modern applications with React, TanStack Router, and modular-react on the frontend, and Node.js, Fastify, Drizzle on the backend.
• Work in a Dockerized TypeScript environment with Vitest and Playwright for testing.
• Partner with Product and Design to shape what we build, focusing on outcomes for customers rather than sheer output.
• Champion AI-native engineering across the Software Development Life Cycle (SDLC) and help the team raise the bar on speed and quality.
• Run what you build by taking part in the on-duty rotation for the services you're responsible for and leading the improvements that keep them reliable.
• Mentor other engineers and champion engineering excellence.

• 5+ years of experience building and maintaining production software, with strong hands-on experience in Node.js, TypeScript, and React, and the ability to work across different systems and technologies.
• Strong full-stack fundamentals: modern frontend architecture (component design, state management, performance), API design, message queues (SNS/SQS, RabbitMQ, or similar), relational databases (PostgreSQL or similar), and cloud (AWS or similar).
• Proficiency with AI-assisted development tools (Claude Code, Cursor, Codex, or similar). You've developed effective ways of working with AI to move faster, solve complex problems, and deliver high-quality software.
• A strong product engineering mindset. You build with the customer in mind and measure success by the impact you deliver, not the tasks you close.
• A strong sense of ownership. You're self-driven, proactive, and accountable for results well beyond the merge.
• Strong collaboration skills. You work effectively with engineers, Product, Design, and other stakeholders to solve problems together. You share knowledge, give and receive constructive feedback, challenge ideas respectfully, and help others succeed.
• A track record of leading complex projects end to end, from technical design to production rollout.
• Strong quality and testing habits (unit, integration, and beyond) that let you ship fast without breaking things.
• Excellent problem-solving, communication skills, attention to detail, and a genuine drive to keep learning in a fast-paced, remote setting.

• Experience working in an open-source community as a maintainer or a contributor.
• Familiarity with the localization industry and software localization.