The opportunity
Unity Spark is our browser-based game editor, with an ambitious vision for how real-time 3D games are created, shared, and played on the web. As a Senior Backend Infrastructure Engineer on the Spark team, you will be the engineer who makes our services build, ship, and scale. You will write backend code, and you will own how it reaches production on Google Cloud: the CI/CD pipelines, the infrastructure as code, the Kubernetes workloads, and the fleets of stateful real-time servers behind multi-user editing.
Our team moves fast and uses AI coding tools every day. That shifts the work from typing code to deciding what to build, checking it is right, and owning it once it is live. We value generalists who pick up whatever the product needs next, whether that is a new service, a scaling problem, or a failed deployment. You will work closely with backend engineers, product, and partner infrastructure teams, and be the go-to person when production needs to scale or is not behaving.
What you'll be doing
- Design, build, and maintain the CI/CD pipelines that take our services from pull request to production, with GitOps-style deployment
- Own infrastructure as code for our Google Cloud and Kubernetes estate, keeping environments consistent and reproducible
- Scale stateful real-time workloads, including autoscaling server fleets, session routing, capacity planning, and safe rollouts, weighing multiple approaches and leading the design with your team
- Write backend services and tooling, including the code that keeps the platform running
- Debug production problems across the stack, from load balancing, networking, TLS, and DNS to the services themselves, anticipate failure modes, and fix the cause rather than the symptom
- Improve observability with metrics, logs, traces, and alerts, and run load tests that show where the limits are
- Use AI coding tools as a normal part of your work, review code and designs, and mentor engineers while raising the team's engineering bar
What we're looking for
- A track record building, operating, and owning backend services at scale in production, in at least one modern backend language
- Hands-on experience running containerized workloads on Kubernetes, ideally on Google Cloud (GKE)
- Deep experience owning infrastructure as code (for example Terraform) and CI/CD pipelines end to end
- On-call experience: you own what you run and fix what you find
- Sound judgment that teammates trust, comfort with ambiguity and trade-offs, and effective written/verbal communication with technical and non-technical colleagues
- Comfort with AI coding tools, reviewing what they produce as critically as a colleague's code
You might also have
- Experience running stateful, real-time, or game-server workloads at scale
- Experience with GitOps tooling such as Argo CD or Flux, and Helm
- Experience with cloud load balancing and edge security, including L7 load balancers, web application firewalls, and certificate management
- Experience with the Unity Engine, interactive 3D technology, or backend services for games
Additional information
Relocation support is not available for this position.
Work visa/immigration sponsorship is not available for this position.
Base Salary Range
Zone A: £55,700 - £83,500 GBP gross
Zone B: £63,700 - £95,500 GBP gross
This range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate's relevant experience, professional background, and skill set.
Benefits
- Comprehensive health, life, and disability insurance
- Commute subsidy
- Employee stock ownership
- Competitive retirement/pension plans
- Generous vacation and personal days
- Support for new parents through leave and family-care programs
- Office food snacks
- Mental Health and Wellbeing programs and support
- Employee Resource Groups
- Global Employee Assistance Program
- Training and development programs
- Volunteering and donation matching program
Life at Unity
Unity [NYSE: U] is the world's leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries li
Senior Software Engineer, Backend Infrastructure in Brighton employer: Unity Technologies SF
Unity is an exceptional employer that fosters a high-performance culture focused on collaboration, accountability, and customer impact. With comprehensive benefits including health insurance, generous vacation days, and robust training programs, employees are supported in their professional growth and well-being. Working at Unity not only offers the chance to lead in the dynamic mobile gaming industry but also provides a unique opportunity to shape the future of interactive experiences across EMEA.
