Software Engineer - Agentic Squad

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.

• 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.

• 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.

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.

• 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

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 https://www.withallo.com/, 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.