Senior Software Engineer 🇦🇷

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 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.

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.

1. 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.

1. 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.

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 product companies
• 4+ 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
• 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.
• Not the perfect match, but want to join us? Send a spontaneous application to [email hidden — sign in] [email hidden — sign in].
• We welcome people from all backgrounds.
• If you’re part of an underrepresented group in tech, we especially want to hear from you.