Member of Technical Staff - Platform Foundations

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 a company-wide foundations platform that accelerates every team by providing reliable, scalable developer infrastructure, SRE capabilities, and high-throughput data ingestion tooling; 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

Requirements

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

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: We have regular off-sites, happy hours, and team celebrations