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

📌 Senior Backend Engineer (Buenos Aires)
🏢 The Mobile-First
📍 Buenos Aires