Senior Frontend Engineer

At The Mobile-First Company, we build mobile-first business software that feels like a consumer app, runs on AI, and spreads like a creator brand.

Our flagship product, Allô, gives users a second number on their phone, answers missed calls with AI, transcribes everything, and syncs it to their CRM.

Over 20,000 businesses use it every day.

Position Overview

Seniority level: Mid-Senior

Employment type: Full-time

Job function: Engineering and Information Technology

Industry: Mobile Computing Software Products

Responsibilities

As the first Frontend Engineer, you'll work side by side with our Product, Mobile, and Back-end teams to build the foundations, the present, and the future of our web products.

Develop and enhance existing and new web applications.

Contribute to technical and strategic decisions regarding our web products.

Evolve our web capabilities and push the limits of what can be done.

Define, build, and improve the tools and architecture behind our web app.

Ship high-quality web apps while always improving UX and performance.

Monitor usage and performance to identify what's missing or broken.

Create internal tools, reusable components, and ways to ship faster.

Qualifications

Experience building and shipping web apps using React.js.

Comfortable with Tailwind, TypeScript, TanStack Query.

Worked on a product with a large user base.

Master clean animations, pixel-perfect designs, and smooth transitions.

Product and design mindset; care about good UX and clear UI.

Think in terms of users, not features.

Built polished component libraries with strong attention to detail.

Know how to build scalable and maintainable code.

Track behavior, usage, performance, and improve based on data.

Communicate clearly, give feedback with no ego, help others grow.

Move fast, take ownership, thrive in ambiguity.

Comfortable working in English; the team's official language is English, with Spanish and French also spoken.

Additional Preferences

Worked in mobile-first companies.

Built or contributed to products with over 1 million downloads.

4+ years of experience.

Proactive, autonomous, fill gaps.

Communicate in English.

Compensation & Benefits

Competitive salary (USD or local equivalent).

Equity package.

10-day team retreats abroad every quarter.

30-day onboarding in Paris (covers flights and housing).

Laptop and work setup of your choice.

Private health insurance (for US or LATAM hires).

Fast, ambitious team building something real.

How to Apply

Click the Apply button on this page to send your application.

No cover letter is needed – just tell us who you are and why this role fits you.

If you're not a perfect match but want to join, send a spontaneous application to ******.

Equal Opportunity

We welcome people from all backgrounds.

If you're part of an underrepresented group in tech, we especially want to hear from you.

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