Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Build and operate foundational platforms for scalable developer infrastructure and cloud projects.
- Company: Join a cutting-edge AI company on a mission to build open superintelligence.
- Benefits: Top-tier salary, comprehensive health benefits, and generous parental leave.
- Other info: Collaborative environment with opportunities for career growth and team celebrations.
- Why this job: Make a real impact by shaping the future of open foundational models.
- Qualifications: Strong background in infrastructure or platform engineering with cloud expertise.
The predicted salary is between 80000 - 100000 £ per year.
Mission: Reflection’s mission is to build open superintelligence and make it accessible to all. We’re developing open weight models for individuals, agents, enterprises, and even nation states. Our team of AI researchers and company builders come from DeepMind, OpenAI, Google Brain, Meta, Character.AI, Anthropic and beyond.
Vision: Build and operate a company-wide foundations platform that accelerates every team by providing reliable, scalable developer infrastructure, SRE capabilities, and high-throughput data ingestion tooling enabling Reflection to move faster as we scale.
Responsibilities:
- Build and operate the foundational platform layer that every engineering team depends on.
- Define opinionated golden paths for cloud infrastructure, networking, and access patterns so the safe and scalable path is also the easiest to follow.
- Work across cloud infrastructure, network primitives, security guardrails, and developer tooling to ensure engineers can ship quickly without sacrificing reliability, security, or cost predictability.
- Define and maintain golden paths for cloud projects, networking, and access patterns.
- Ship secure defaults and guardrails that make the safe path the easy path.
- Build and operate core networking primitives including routing, DNS, load balancing, and connectivity.
- Establish baseline observability and operational hygiene across services and infrastructure.
- Own developer infrastructure such as build systems, CI/CD, caching, and test infrastructure to keep engineers shipping fast.
- Drive cloud cost visibility and reduction through tooling, guardrails, and optimization without slowing teams down.
What You’ll Work With:
- Cloud & Multi-Cloud Architecture: GCP, AWS, multi-cloud design, VPC architecture, private DNS, load balancers, advanced routing (BGP), large-scale Kubernetes clusters, control plane scaling.
- Identity & Security Foundations: IAM, OIDC, RBAC, KMS, secrets management, policy-as-code (OPA, Gatekeeper), secure defaults, cloud guardrails.
- Infrastructure & Automation: Terraform, Pulumi, Kubernetes foundations, CI/CD systems, Bazel, build caching, hermetic builds.
- Observability & Cost Governance: Prometheus, Grafana, OpenTelemetry, logging and metrics systems, FinOps, cloud cost optimization.
About You:
- Strong infrastructure or platform engineering background with experience shipping production-grade systems.
- Deep expertise in at least one of: cloud platforms, network engineering, security architecture, or developer tooling — with working knowledge across the others.
- Comfortable navigating complex multi-team environments, debugging hard infrastructure problems, and building for reliability and scale.
- Thrive in a high-agency, fast-paced environment; bias toward action and impact.
- Excited about zero to one challenges — building new systems rather than maintaining legacy ones.
- Collaborative, clear communicator, comfortable working across research and infrastructure boundaries.
- Motivated by creating the secure, self-serve foundation that the world’s most capable open-weight AI systems are built on.
What We Offer:
- Top-tier compensation: Salary and equity structured to recognize and retain the best talent globally.
- Health & wellness: Comprehensive medical, dental, vision, life, and disability insurance.
- Life & family: Fully paid parental leave for all new parents, including adoptive and surrogate journeys. Financial support for family planning.
- Benefits & balance: paid time off when you need it, relocation support, and more perks that optimize your time.
- Opportunities to connect with teammates: lunch and dinner are provided daily. We have regular off-sites and team celebrations.
Member of Technical Staff - Platform Foundations in London employer: Reflection
Contact Detail:
Reflection Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Member of Technical Staff - Platform Foundations in London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, especially those at Reflection or similar companies. A friendly chat can open doors that a CV just can't.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your projects and contributions. This gives us a real taste of what you can do beyond the usual application.
✨Tip Number 3
Prepare for the interview like it’s the big game! Research Reflection’s mission and values, and think about how your experience aligns with their goals. We love candidates who are genuinely excited about what we do.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining our team.
We think you need these skills to ace Member of Technical Staff - Platform Foundations in London
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the role. Highlight your experience with cloud platforms, networking, and security architecture, as these are key areas for us at Reflection.
Showcase Your Impact: When detailing your past experiences, focus on the impact you made in previous roles. We love to see how you've contributed to building reliable systems or optimising infrastructure.
Be Clear and Concise: Keep your application straightforward and to the point. Use clear language to describe your skills and experiences, making it easy for us to see why you’d be a great fit for our team.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role you’re excited about!
How to prepare for a job interview at Reflection
✨Know Your Tech Inside Out
Make sure you’re well-versed in the technologies mentioned in the job description, like cloud platforms and Kubernetes. Brush up on your knowledge of networking and security architecture, as these are crucial for the role.
✨Showcase Your Problem-Solving Skills
Be prepared to discuss specific challenges you've faced in infrastructure or platform engineering. Use the STAR method (Situation, Task, Action, Result) to clearly articulate how you tackled complex problems and what impact your solutions had.
✨Demonstrate Collaboration
Since the role involves working across teams, highlight your experience in collaborative environments. Share examples of how you’ve effectively communicated with different stakeholders to achieve common goals.
✨Ask Insightful Questions
Prepare thoughtful questions about the company’s vision and the foundational platform they’re building. This shows your genuine interest in their mission and helps you understand how you can contribute to their goals.