The Mobile-First Company - Staff Frontend Engineer (React)

Location: Argentina (Hybrid)

About The Mobile-First Company

Most 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 on

• 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 performances

• Monitor usage and performance to identify what’s missing or broken

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

What we’re looking for

1. Engineering

• You’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.

2. Product and design mindset

• You care about good UX and clear UI

• You think in terms of users, not features

• You’ve built polished components with strong attention to detail

3. Performance and data

• You know how to build scalable and maintainable code

• You care about what to measure and how it impacts business and users

• You track behavior, usage, and performance, and improve based on it

4. Performance and data

• You know how to build scalable and maintainable code

• You care about what to measure and how it impacts business and users

• You track behavior, usage, and performance, and improve based on it

5. How you think

• You 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.

1. How you work

• You 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 us

• You’ve worked in mobile-first companies

• You’ve built or contributed to products with more than 1 million downloads

• You’re excellent at React.js

• You have 6+ years of experience

• You’re proactive, autonomous, and know how to fill the gaps

• You can communicate in English, since that's our official language. Most of the team also speaks Spanish and French.

What we offer

• Competitive salary (in USD or local equivalent)

• Equity package

• 10-day team retreats abroad every quarter

• 30-day onboarding in Paris (we cover flights and housing)

• Laptop and work setup of your choice

• Private health insurance (for US or LATAM hires)

• A tight, ambitious team building something real — fast

The Interview Process:

• Silver.dev Recruiter Screening

• Silver.dev System Design Interview

• Recruiter People Interview (client)

• Technical Interview (Work Experience + System Design interview)

• CTO Interview

• Founder/CEO Interview