Software Engineer (Backend) at Letly

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

Job Title

Software Engineer (Backend)

Salary

Not Disclosed

Company Description

Letly is a £2M pre-seed AI-native operating company rebuilding the home rental lifecycle, from viewings and payments to repairs.

Job Description

As a Backend Engineer at Letly, you will build the foundational systems powering the entire rental ecosystem. You’ll architect scalable microservices, design high-throughput APIs, and integrate advanced AI/ML models into production workflows. This role offers the unique challenge of digitizing complex real-world operations for landlords, tenants, and vendors.

Location

London, UK

Why this role is remarkable

• Build the world's first AI-native infrastructure for the home, modernizing a fragmented industry currently split across agents, banks, and service providers.
• Backed by £2M in pre-seed funding from elite investors who previously built global financial infrastructure handling billions in daily transaction value.
• High-agency environment where your code directly manages real-world assets, financial integrations, and regulatory compliance for thousands of concurrent users.
  
  

What You Will Do

• Architect and maintain scalable microservices using NestJS and TypeScript to automate the end-to-end rental lifecycle and financial rails.
• Collaborate with AI engineers to integrate LLMs into production workflows, pushing the boundaries of how AI handles real-world property and money.
• Own the full engineering cycle by participating in DevOps, infrastructure management on GCP/GKE, and database optimization across MongoDB paradigms.
  
  

The ideal candidate

• Strong proficiency in backend development (TypeScript/Node.js preferred) with deep experience building microservices and RESTful API architectures.
• Proven ability to manage complex data structures and event-driven systems, ideally with familiarity in MongoDB, Kubernetes, and GitOps practices.
• A first-principles thinker with an obsession for code quality and the adaptability to thrive in a fast-paced, high-stakes operational environment.
  
  

Who are Jack & Jill?

Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

How does this work?

• Jack's an AI agent for job searching and career coaching. He works for you.
• Jill is the AI recruiter working for the company. She recruits from Jack's network.
• If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
  
  

We never post fake jobs

This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.