Backend Engineer (Junior to Mid): Build Reliable Money Systems

Letly; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Letly is hiring backend engineers to design and own the core services powering every viewing, tenancy, certificate, rent payment and repair. The role spans junior to staff levels, with scope-based growth and production responsibility from day one.

You’ll work on money movement, reconciliation, event-driven coordination, and AI integration in production, using NestJS/TypeScript on GCP/GKE with MongoDB and Redis. We value robust, scalable backends and fast feedback loops.

Qualifications

• Backend systems experience with production-grade services.
• Experience with distributed systems, data consistency and reliability.
• Familiarity with TDD and domain-driven design (DDD).

Responsibilities

• Build and own backend services across viewing, tenancy, payments and repairs.
• Ensure correctness, reliability and scalability under load.
• Ship features with fast feedback and strong observability.
• Collaborate with cross-functional teams to own end-to-end services.

Skills

Backend development

Distributed systems

TDD / DDD

Tools

NestJS

TypeScript

GCP

GKE

MongoDB

Redis

Job description

Letly is hiring backend engineers to design and own the core services powering every viewing, tenancy, certificate, rent payment and repair. The role spans junior to staff levels, with scope-based growth and production responsibility from day one.

You’ll work on money movement, reconciliation, event-driven coordination, and AI integration in production, using NestJS/TypeScript on GCP/GKE with MongoDB and Redis. We value robust, scalable backends and fast feedback loops.