Senior frontend engineer (react native)

About the role

We’re looking for a Senior React Native Engineer to join the Lenda team – our new brand in Mexico – building a new consumer credit card as part of our continued international growth.

You’ll join a small, cross‑functional team with a startup mindset, operating within one of Europe’s most successful and profitable fintechs. Having recently launched in closed beta, we’re iterating quickly and refining the product as we prepare for a full public launch and continued growth in Mexico.

Your primary focus will be our React Native mobile application, delivering high‑quality features and evolving a clean, scalable frontend codebase. You’ll collaborate closely with backend engineers to agree API behaviours through clear, documented contracts, contribute across the broader frontend surface area where needed, and partner with product stakeholders to deliver well‑defined, high‑impact improvements.

Our ideal engineer is detail‑oriented and resourceful, writing thoughtful, maintainable code and approaching problems with pragmatism. You’re as interested in understanding the “why” behind a feature as you are in delivering the “how”.

Tech stack Frontend: Typescript, React Native, Expo, Next JS, Graph QL (Relay), Jest, React Testing Library, Maestro Backend: PHP 8 (Symfony), AWS, Postgres, Rabbit MQ, Docker, Kubernetes, Argo CD Tooling: Github, Jira & Confluence, Datadog & Sentry, Figma & Storybook Essential skills you’ll need to have Solid understanding of recent versions of Typescript Commercial experience with cross‑platform mobile development using React Native, and modern web development with React / Next JS Good understanding of the different needs of users across a variety of platforms and devices Experience with current automated testing approaches and pragmatic implementation of the testing pyramid Ability to leverage AI development tooling to accelerate delivery, using copilots and autonomous agents with clear direction and strong engineering judgement Product mindset and comfortable working with product owners to break down business requirements into deliverable tasks and estimate complexity Proficiency in written and spoken English (B2 / Intermediate) What would make you stand out Working proficiency in Spanish, strengthening your ability to operate effectively in the Mexican market Experience using Graph QL in a production environment Experience with mobile performance best practices and debugging Experience with staged rollouts and multivariate testing approaches to release new features and test hypotheses Understanding of accessibility needs, and familiarity with tooling required to ensure accessibility guidelines and best practices are adhered to Experience in UI or UX design, and feel at ease discussing approaches with product designers Experience building or working on products that scaled from zero users to hundreds or thousands, applying lessons in new contexts Benefits Winning team: the opportunity to scale up one of the world’s most successful fintech companies Flexible working: tailored approach to each role – hybrid roles require three days in‑office weekly; fully remote roles include regular opportunities for in‑person connection through socials and off‑sites Socials & connection: opportunities and events to come together, socialise, and get to know each other beyond the office walls Health coverage: support for physical and mental wellbeing, including private health cover Retirement & savings: long‑term financial wellbeing through retirement savings plans Employee referral programme: earn a competitive bonus when you refer successful new team members Office meals & snacks: enjoy a fully stocked kitchen, plus complimentary lunches prepared by in‑house chefs on in‑office days at select locations Sustainable commuting: cycle‑to‑work and electric vehicle salary sacrifice schemes available in select locations

To learn more about the role, visit our blog at #J-18808-Ljbffr