Senior Frontend Engineer 🇦🇷

About The Mobile-First CompanyMost tools for small businesses weren’t built for real operators.They were built for employees in offices, not people running a business from their phone.We’re changing that.We build mobile-first business software that feels like a consumer app, runs on AI, and spreads like a creator brand.Our first product, Allô, gives you a second number on your phone, answers missed calls with AI, transcribes everything, and syncs it to your CRM.Over 20,000 businesses use it every day.Next up: expenses, invoicing, and more.We’ve raised +5 million dolars from Lightspeed, EMBLEM, and 30+ top operators.Our team is based in Paris, Buenos Aires, Miami.What will you do:As the first Frontend Engineer, you’ll work side by side with our Product, Mobile and Back-end team to build the foundations, the present, and the future of our web products. Develop and enhance both our existing and new web applications. Contribute to technical and strategic decisions regarding our web products. What you’ll be working onEvolve our web capabilities and push the limits of what can be doneDefine, build, and improve the tools and architecture behind our web appShip high-quality web apps, while always improving UX and performancesMonitor usage and performance to identify what’s missing or brokenCreate internal tools, reusable components, and ways to ship fasterWhat we’re looking for EngineeringYou’ve built and shipped web apps using React.JS. You’re comfortable with Tailwind, Typescript, TanStack Query. You’ve already worked on a product with a large user base. You master clean animations, pixel perfect designs and smooth transitions. Product and design mindsetYou care about good UX and clear UIYou think in terms of users, not featuresYou’ve built polished components with strong attention to detail Performance and data You know how to build scalable and maintainable codeYou care about what to measure and how it impacts business and usersYou track behavior, usage, and performance, and improve based on it Performance and dataYou know how to build scalable and maintainable codeYou care about what to measure and how it impacts business and usersYou track behavior, usage, and performance, and improve based on it How you thinkYou care about why we build things, not just how. You ask smart questions, challenge ideas when needed, and help shape what’s next. You think in terms of user value and business impact. How you workYou communicate clearly, give feedback with no ego, and help others grow. You move fast, take ownership, and thrive in ambiguity. You're comfortable working in English — and in a small team with big goals. What matters to usYou’ve worked in mobile-first companiesYou’ve built or contributed to products with more than 1 million downloadsYou’re excellent at React.jsYou have 4+ years of experience You’re proactive, autonomous, and know how to fill the gapsYou can communicate in English, since that's our official language. Most of the team also speaks Spanish and French. What we offerCompetitive salary (in USD or local equivalent)Equity package10-day team retreats abroad every quarter30-day onboarding in Paris (we cover flights and housing)Laptop and work setup of your choicePrivate health insurance (for US or LATAM hires)A tight, ambitious team building something real — fastHow To ApplyClick the Apply button on this page to send your application.No cover letter needed just tell us who you are and why this role fits you.Not the perfect match, but want to join us? Send a spontaneous application to talent@themobilefirst.co.We welcome people from all backgrounds.If you’re part of an underrepresented group in tech, we especially want to hear from you.