At a Glance
- Tasks: Own and develop backend systems that manage real money and homes.
- Company: Join an innovative AI-Native company transforming the rental industry.
- Benefits: Competitive salary, equity, and a dynamic work environment.
- Other info: Be part of a fast-growing team with excellent career growth opportunities.
- Why this job: Make a real impact on the future of rental properties with cutting-edge technology.
- Qualifications: 6+ years in backend development with strong system design skills.
The predicted salary is between 63000 - 77000 £ per year.
The role involves owning the backend systems the company runs on and the architecture other engineers build on. These systems are critical for correctness, reliability, and scale, as they handle real 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 with 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 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 who have built production systems with any robust framework (Java/Spring Boot, Go, Kotlin, C#/.NET, Python, or Ruby on Rails) and can ramp into TypeScript quickly.
How we build: Small, well-factored services with TDD and DDD as defaults. Trunk-based CI/CD allows you to ship to production and own it, with tests, observability, and clean rollbacks.
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.
Nice to have:
- Experience with MongoDB and GCP/GKE.
- Familiarity with event-driven architecture and message brokers (Pub/Sub, Kafka).
- Knowledge of payments, ledgers, reconciliation, or financial-correctness domains.
- Experience in fintech or regulated, high-trust environments.
Who does well here: You are precise about correctness, own the outcome, make the next engineer faster, and seek hard problems while raising the standard around you.
Why apply: The company is the AI-Native operating company built for the home, aiming to autonomously run rental properties end-to-end. 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 potential of this infrastructure. You'll receive competitive base pay, meaningful equity, and be part of a small, high-agency team rebuilding an industry and growing rapidly.
Software Engineer (Backend) — Staff / Senior in London employer: United States Digital Space LLC
United States Digital Space LLC is an exceptional employer, offering a dynamic work culture that prioritises innovation and collaboration in the heart of Greater London. With a strong focus on employee well-being and flexible work options, we provide ample opportunities for professional growth and development, making it an ideal environment for those looking to make a meaningful impact in the field of AI-enabled SaaS engineering.
Contact Details:
United States Digital Space LLC Recruitment Team
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer (Backend) — Staff / Senior 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 United States Digital Space LLC 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
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✨Tap into Online Developer Communities
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We think you need these skills to ace Software Engineer (Backend) — Staff / Senior 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 United States Digital Space LLC.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at United States Digital Space LLC 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 United States Digital Space LLC
✨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 United States Digital Space LLC 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.
