Location: Buenos Aires, 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 .

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 backend systems using languages like Kotlin, Java, Go, Python or similar.

- Designing and defining backend tools, databases, and the architecture of our apps.

- Working directly with Cloud services (e.g., AWS, Supabase, Cloudflare).

- Creating tools, libraries, or components to enhance the efficiency of backend development processes.

What we’re looking for

1. Backend Engineering:

- Proficiency in backend development with expertise in languages like Kotlin, Java, Go, Python or similar.

- Familiarity with database design, management, and optimization.





- Track record of building and maintaining scalable and reliable backend systems.

- Experience with AI is a strong plus, especially in applying models to real-world product use cases and optimizing performance in production environments.

- 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

1. 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

- 6+ 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 quarter

- 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

- Client People Interview

- Client Technical Interview

- Client Behavioral Interview

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📌 The Mobile-First Company - Sr. Backend Engineer (Argentina)
🏢 Silver.dev
📍 Argentina