At a Glance
- Tasks: Own backend systems and architecture for money movement and tenancy management.
- Company: Join Letly, an innovative AI-native company transforming the rental industry.
- Benefits: Competitive salary, equity, and a dynamic work environment with rapid growth.
- Other info: Be part of a small, high-agency team driving significant change in the rental market.
- Why this job: Make a real impact on how homes are managed with cutting-edge technology.
- Qualifications: 6+ years in backend systems, strong API skills, and experience with distributed systems.
The predicted salary is between 72000 - 88000 £ per year.
The role involves owning the backend systems Letly runs on, including the architecture that other engineers build on. This software supports every viewing, tenancy, certificate, rent payment, and repair, where correctness, reliability, and scale are essential due to the real implications for people's money, homes, and legal exposure.
This is a senior-to-staff hire. At the senior level, you will own systems others build on, make architectural decisions, set patterns, and raise the bar around you. At the staff level, you will own the technical direction of a domain, decide what gets built and how, unblock other engineers, and be accountable for system behaviour under load.
What you'll work on:
- Money movement: Rent, deposits, and payouts through pooled client-money accounts, focusing on idempotent processing and split-settlement.
- Reconciliation & bookings: A penny-accurate, self-healing ledger reconciling bank activity across thousands of tenancies.
- Event-driven consistency: Services coordinating over Pub/Sub with sagas across offer, contract, tenancy, and payment.
- AI harnesses in production: Deploying agentic AI into operational settings with necessary guardrails, observability, and correctness.
Our stack: We build on NestJS + TypeScript on GCP / GKE, with MongoDB, Redis, and GCP Pub/Sub. You don't need to arrive fluent in it; we hire strong backend engineers experienced with any robust framework (Java/Spring Boot, Go, Kotlin, C#/.NET, Python, or Ruby on Rails) who can ramp into TypeScript quickly.
How we build: We focus on small, well-factored services, TDD and DDD as defaults, trunk-based CI/CD, and lean frameworks with readable code.
What we're looking for:
- 6+ years building and operating production backend systems (more for staff).
- Fluency in at least one backend language and framework, with the ability to reason about system design.
- Real distributed-systems experience: eventual consistency, idempotency, concurrency, and their failure modes at production scale.
- Strong API and data modelling skills, plus cloud/containerised deployment experience (GCP or AWS, Docker, Kubernetes).
- AI-Native engineer: proficient in using AI across all layers of work and understanding LLM failure modes.
- Senior: a track record of designing systems for others to build on and raising team standards.
- Staff: experience setting technical direction across several services or teams.
Nice to have:
- Experience with MongoDB and GCP/GKE.
- Familiarity with event-driven architecture and message brokers (Pub/Sub, Kafka).
- Experience in payments, ledgers, reconciliation, or financial-correctness domains.
- Background in fintech or regulated, high-trust environments.
Who does well here: You are precise about correctness, own outcomes, and make the next engineer faster with clear code and reasoning. We are open to diversity.
Why apply: Letly is the AI-Native operating company built for the home, aiming to autonomously run rental properties. The backend is technically challenging, dealing with messy operational realities and high throughput across many user types. We've raised a $4m pre-seed from investors who understand the infrastructure needed for the home, which is the largest consumer asset yet to be built upon. You'll receive competitive base pay, meaningful equity, and be part of a small, high-agency team driving significant growth.
Software Engineer — Staff / Senior employer: Worky
Letly is an exceptional employer that fosters a collaborative and innovative work culture, where junior-to-mid backend engineers can thrive. With a strong emphasis on mentorship and hands-on experience from day one, employees are empowered to take on real production responsibilities while working with cutting-edge technologies. Located in a dynamic environment, Letly offers ample opportunities for professional growth and development, making it an ideal place for those seeking meaningful and rewarding careers in tech.
