Senior Backend Engineer – Platform & Logistics

Overview

At Lupa, we're hiring a Senior Backend Engineer – Platform & Logistics to own the core engine powering a fast-growing, tech-enabled last-mile delivery startup operating across major US metropolitan areas. The business specializes in cold-chain logistics—moving thousands of temperature-sensitive packages every month by matching driver fleets with optimized delivery routes.

This is a high-ownership role at the intersection of backend engineering, mathematical route optimization, and practical AI/ML integration. You'll partner directly with the CTO during onboarding to absorb core business logic, then take full ownership of backend platform scaling and logistics architecture. If you thrive in a culture of complete domain ownership—real leverage over critical systems without micromanagement—this one is for you.

• Location: LATAM Remote (Argentina preferred; Brazil & LATAM open)

• Timezone: US overlap required (Eastern / Mountain Time)

• Stack: Node.js, Express, PostgreSQL, Prisma, GCP

What You'll Do

• Own the Driver Distribution Engine: Build and refine algorithmic dispatch systems that efficiently match thousands of monthly delivery routes to drivers.

• Improve In-House Routing Systems: Maintain and enhance mathematical routing logic without relying on third-party black-box services.

• Integrate Practical AI/ML: Apply agentic AI, RAG patterns, and smart automation where it directly improves driver dispatching, route efficiency, and pay-calculation reliability.

• Design & Scale the Platform: Build clean, maintainable RESTful services and database architectures using Node.js, Express, PostgreSQL, and Prisma.

• Engineer for Performance & Scale: Structure backend services to cleanly scale alongside high-volume route concurrency and active driver fleets.

• Optimize Pragmatically: Focus on high-impact algorithmic improvements that measurably improve real-world fleet performance—not theoretical tweaking.

• Support Cloud & Infrastructure (nice-to-have): Help manage and optimize the Google Cloud Platform (GCP) setup as needed.

Who You Are

Must-Haves

• Senior backend engineering experience with Node.js, Express, relational databases (PostgreSQL), and ORMs (Prisma).

• Hands-on experience that has expanded into practical AI/ML tools, agentic workflows, or algorithmic optimization.

• Proven ability to build and scale backend services, handle complex logistics data, and manage domain logic independently.

• Exceptional spoken and written English fluency (C1/C2) to collaborate directly with US leadership.

• Autonomous, domain-driven mindset with pride in system clarity and clean architecture.

• Ability to work with consistent overlap to US Eastern / Mountain time zones.

Nice-to-Haves

• Experience managing or optimizing GCP environments.

• Background in logistics, routing, dispatch, or other high-concurrency operational systems.

• Experience with mathematical/route optimization problems.

What's In It For You

• Real ownership: Direct leverage over the core systems that power the business—no micromanagement.

• High-impact work: Your algorithmic improvements will measurably affect thousands of real-world deliveries each month.

• Direct access to leadership: Partner with the CTO during onboarding and beyond.

• Remote-first: Work from anywhere in LATAM with US-hours overlap.

• Compensation: Competitive senior-level salary benchmarked for LATAM remote backend engineers.

• Schedule: Full-time with US Eastern/Mountain overlap.

Application

Ready to own the engine behind a fast-scaling logistics platform? Apply through Lupa today. Share your resume along with a short note on a backend system you've built and scaled—we'd love to hear how you take ideas from architecture to production.

Recruiter Notes

• No consultation transcript was available during generation.