Senior Backend Engineer - Ai-Driven Mobile-First Systems

The Mobile-First Company; Buenos Aires; Híbrido; ARS 137.157.000 - 182.877.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary

Equity package

Team retreats

Hub trips

Home office setup

Health insurance

Descripción de la vacante

The Mobile-First Company is seeking a Backend Engineer to evolve our backend, infrastructure, and AI capabilities for high performance across mobile apps. You will build scalable services using Kotlin, Java, Go, or Python, and shape the architecture and tooling that powers our product suite.

Join a small, ambitious team with English as the official language, and work across continents from hubs in Paris, BA, and Miami while leveraging AWS, Supabase, and Cloudflare.

Formación

• Proficiency in backend development with 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 applying models to product use cases and production optimization.

Responsabilidades

• Drive evolution of backend technology, infrastructure, and AI capabilities for high performance.
• Implement and maintain scalable backend systems and tools.
• Design backend architecture and integrations with Cloud services (AWS, Supabase, Cloudflare).
• Create libraries and components to improve backend development efficiency.

Conocimientos

Backend development

Kotlin/Java/Go/Python

Database design

AI in prod

System scalability

Monitoring (New Relic/Datadog)

Herramientas

New Relic

Datadog

Descripción del empleo

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

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're active 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

We welcome people from all backgrounds.

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

#J-*****-Ljbffr