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Member of Technical Staff - Platform Foundations

Reflection· Engineering
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New York, NY, San Francisco, CA, LondonFull-timePosted 7mo ago

About the role

Reflection is a research lab building open and accessible intelligence. This role focuses on building and operating the foundational platform layer, including cloud infrastructure, networking, security guardrails, and developer tooling to enable fast, reliable, and secure engineering at scale.

Responsibilities

  • 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.

Qualifications

  • 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.

Skills

Required:Cloud platformsNetworkingSecurity architectureDeveloper tooling
Nice to have:Observability

Benefits

  • Top-tier compensation: Salary and equity structured to recognize and retain our talent globally.
  • Stock options: Everyone who joins and contributes to Reflection's success gets to share in the upside through stock options.
  • Health & wellness: Comprehensive medical, dental, vision, and life, with an annual wellness allowance.
  • Meals: Lunch and dinner are provided in the office daily.
  • Life & family: 22 weeks paid parental leave for all new birthing and non-birthing parents, including adoptive and surrogate journeys.
  • Vacation days: Unlimited paid time off in the U.S. and 30 days in the U.K.
  • Sponsorship support: We sponsor visas to help exceptional talent join our team and support long-term immigration pathways where applicable.
  • Team building: Regular off-sites, happy hours, and team celebrations.
Last updated Oct 1, 2026. Interested? Apply on the company site.

About Reflection

Building frontier open intelligence

Building frontier open intelligence.

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Company profileWebsite

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