Member of Technical Staff - Platform Foundations
Member of Technical Staff - Platform Foundations

Member of Technical Staff - Platform Foundations

Full-Time 80000 - 100000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Build and operate a foundational platform for AI development, ensuring reliability and scalability.
  • Company: Join a cutting-edge AI company on a mission to create open superintelligence.
  • Benefits: Top-tier salary, comprehensive health benefits, and generous parental leave.
  • Other info: Collaborative environment with opportunities for career growth and team bonding.
  • Why this job: Make a real impact by shaping the future of AI infrastructure.
  • Qualifications: Strong background in infrastructure or platform engineering with cloud expertise.

The predicted salary is between 80000 - 100000 £ per year.

MissionReflection’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 employer: Reflection

At MissionReflection, we are committed to building a collaborative and innovative work environment where every team member plays a crucial role in shaping the future of open superintelligence. Our culture prioritises employee well-being with top-tier compensation, comprehensive health benefits, and generous parental leave, ensuring that you can focus on impactful work while enjoying a balanced life. Join us in a dynamic setting that fosters growth and creativity, as we build cutting-edge infrastructure that empowers teams to excel.
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Contact Detail:

Reflection Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Member of Technical Staff - Platform Foundations

✨Tip Number 1

Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. 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. It’s a great way to demonstrate what you can do beyond the written application.

✨Tip Number 3

Prepare for interviews by practising common questions and scenarios related to platform engineering. The more you rehearse, the more confident you'll feel when it counts!

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive!

We think you need these skills to ace Member of Technical Staff - Platform Foundations

Cloud Architecture
Multi-Cloud Design
VPC Architecture
Routing
DNS Management
Load Balancing
Kubernetes
Infrastructure as Code (Terraform, Pulumi)
CI/CD Systems
Observability Tools (Prometheus, Grafana, OpenTelemetry)
Security Architecture (IAM, OIDC, RBAC)
Cost Optimisation
Collaboration Skills
Problem-Solving Skills
Communication Skills

Some tips for your application 🫡

Tailor Your Application: Make sure to customise your CV and cover letter to reflect the specific skills and experiences that align with the Member of Technical Staff role. Highlight your expertise in cloud platforms, network engineering, or security architecture, as these are key areas for us.

Showcase Your Impact: When detailing your past experiences, focus on the impact you made in previous roles. Use metrics and examples to illustrate how you’ve built reliable systems or improved infrastructure, as we love seeing tangible results!

Be Clear and Concise: Keep your application clear and to the point. We appreciate straightforward communication, so avoid jargon unless it’s relevant. Make it easy for us to see why you’re a great fit for our team.

Apply Through Our Website: We encourage you to apply directly through our website. This ensures your application gets to the right place and helps us keep track of all candidates efficiently. Plus, it’s super easy!

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 (GCP, AWS), Kubernetes, and Terraform. Brush up on your knowledge of networking and security architecture, as these are crucial for the role.

✨Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in infrastructure or platform engineering. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight how you navigated complex problems and built reliable systems.

✨Demonstrate Collaboration

Since the role involves working across teams, be ready to share examples of how you’ve successfully collaborated with others. Talk about how you communicate clearly and work effectively with both technical and non-technical stakeholders.

✨Ask Insightful Questions

Prepare thoughtful questions that show your interest in the company’s mission and the role. Inquire about their approach to building secure foundations or how they handle cloud cost optimisation. This not only shows your enthusiasm but also helps you gauge if the company is the right fit for you.

Member of Technical Staff - Platform Foundations
Reflection

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