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, Allo, 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 +15 million dolars from Base10, Lightspeed, EMBLEM, and 30+ top operators.

Our team is based in Paris, Buenos Aires, Miami.

Drive the evolution of our backend technology, infrastructure, and AI capabilities to ensure high performance, scalability, and seamless integration for our mobile applications.

What will you do

Work side by side with our CTO to build the foundations, the present, and the future of our backend, and AI systems.

Develop and enhance backend systems for both existing and new applications in conjunction with mobile engineers.

Contribute to systems design, infrastructure planning, CI/CD processes, and data workflows.

What you’ll be working on

Implementing and maintaining scalable and reliable AI products in languages like Kotlin and TypeScript.

Designing and defining AI solutions for our product, like voice agents that answer and place real phone calls and book appointments.

Creating new capabilities for our agentic workflows.

What we’re looking for

AI Engineering:

Track record of shipping LLM-powered features to production and keeping them reliable under real traffic.

Capable of monitoring AI features and measuring their results.

Familiarity with LLM evaluation design, execution, and iteration.

Familiarity with retrieval (RAG) design, ingestion, and ranking.

Familiarity designing tools for agents, including MCP.

Experience with agent frameworks like Mastra, LangChain or similar.

Experience with voice platforms like ElevenLabs is a strong plus.

Systems Architecture:

Expertise in designing scalable and maintainable backend architectures, understanding when to apply different architectural patterns.

Capable of monitoring the whole architecture using tools like New Relic or Datadog.

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

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.

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 product companies

3+ years of experience designing and building high-performance systems used by millions.

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 year

Trips to our Hubs (Pairs/Miami/BA) for onboarding and more

Laptop and work setup of your choice

Coverage for private health insurance (for US or LATAM hires)

A tight, ambitious team building something real: fast

How to apply

Click 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.

We welcome people from all backgrounds.

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