At a Glance
- Tasks: Build and own backend systems for real money and homes.
- Company: Join a forward-thinking tech company with a focus on innovation.
- Benefits: Competitive salary, health benefits, remote work, and growth opportunities.
- Other info: Fast-paced culture with excellent mentorship and career advancement.
- Why this job: Make a real impact with cutting-edge technology in a dynamic environment.
- Qualifications: Experience in backend development with any robust framework.
The predicted salary is between 63000 - 77000 £ per year.
The role involves building and owning the backend systems that Letly runs on — the software behind every viewing, tenancy, certificate, rent payment, and repair. These systems require correctness, reliability, and scale as they handle real people's money, homes, and legal exposure.
This position is hiring at every level, from junior to staff, based on the scope of ownership rather than years of experience. At the junior level, you will ship features inside services owned by others, with review, mentoring, and real production responsibility from the first month. The fastest engineers here ask questions early and close the loop quickly. At the mid level, you will own features and services end-to-end. At the senior level, you will own systems built by others, 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 how those systems behave under load.
What you'll work on includes:
- Money movement: Rent, deposits, and payouts through pooled client-money accounts — idempotent processing, split-settlement, exactly-once across service and bank boundaries.
- Reconciliation & bookings: A penny-accurate, self-healing ledger reconciling bank activity across thousands of tenancies; contended scheduling for viewings, certificates, photography, and maintenance against finite slots and vendor availability.
- Event-driven consistency: Services coordinating over Pub/Sub — sagas across offer contract tenancy payment without relying on distributed transactions.
- AI harnesses in production: Deploying agentic AI into real-world operational settings — acting on real money, tenancies, and legal exposure, with the necessary guardrails, observability, and correctness.
Our stack includes 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 who have built production systems with any robust framework — Java/Spring Boot, Go, Kotlin, C#/.NET, Python (Django/FastAPI), or Ruby on Rails — and can ramp into TypeScript quickly. We value your experience in building and operating real backends over the specific language used.
How we build:
- Small, well-factored services.
- TDD and DDD as defaults.
- Trunk-based CI/CD — you ship to production and own it, with tests, observability, and clean rollbacks.
- Lean frameworks, readable code, allowing us to move fast because the tests and boundaries enable it.
What we're looking for:
Software Engineer — Junior / Mid in London employer: Letly
Letly is an exceptional employer that fosters a dynamic and collaborative work culture in the heart of London. With a strong focus on employee growth, we offer comprehensive training and development opportunities to help you excel in your role as a Business Development Consultant. Our innovative, AI-driven approach not only enhances your sales capabilities but also ensures you are part of a forward-thinking team dedicated to achieving success together.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer — Junior / Mid in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Letly or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Letly.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Letly.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Letly that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Software Engineer — Junior / Mid in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Letly.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Letly and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Letly
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Letly uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
