Want to get hired at Reflection?

Member of Technical Staff Software Engineer

Reflection

London, England, United KingdomOn Site

Original Job Summary

Our Mission

Reflection’s mission is to build open superintelligence and make it accessible to all. We are developing open weight models for individuals, agents, enterprises, and even nation states. Our team includes AI researchers from DeepMind, OpenAI, Google Brain, Meta, Character.AI, Anthropic, and beyond.

About the Role

As a Member of Technical Staff Software Engineer, you will:

  • Build core software systems and tools for research, training, and production.
  • Design and implement reliable, scalable, and secure services for model development, deployment, and evaluation.
  • Develop APIs, SDKs, and internal platforms for rapid experimentation.
  • Drive engineering excellence and create the foundation for next generation AI models.
  • Unify data, compute, and workflow management across model development.

About You

You are expected to have:

  • A strong software engineering background with production-grade experience.
  • Expertise in designing APIs, services, or platforms for large-scale data or compute.
  • Skill in navigating complex codebases and debugging challenging problems.
  • A bias toward action in a high-agency, fast-paced startup environment.
  • An eagerness to tackle zero to one challenges and build new systems.
  • Excellent communication and collaboration skills crossing research and infrastructure boundaries.
  • A motivation to build the backbone for world-class open-weight AI systems.

What We Offer

At Reflection, you will join a small, talent-dense team building from the ground up. This role offers:

  • Top-tier compensation with salary and equity for global talent retention.
  • Comprehensive health, dental, vision, life and disability insurance.
  • Fully paid parental leave and financial family support benefits.
  • Paid time off, wellness stipends, commute benefits, education stipend and relocation support.
  • Daily provided lunches and dinners, plus regular off-sites and team celebrations.

Key skills/competency

Software Engineering, API Design, Scalability, Security, Debugging, Production Systems, Data Management, Workflow, Rapid Experimentation, Infrastructure

How to Get Hired at Reflection

🎯 Tips for Getting Hired

  • Customize Your Resume: Tailor your skills to match Reflection’s requirements.
  • Highlight Technical Expertise: Emphasize experience with scalable systems and APIs.
  • Prepare for Behavioral Questions: Practice clear, concise communication examples.
  • Showcase Startup Agility: Provide examples of zero to one projects and rapid iteration.

📝 Interview Preparation Advice

Technical Preparation

Review system design fundamentals.
Practice API and SDK development.
Study scalable and secure service design.
Debug complex code problems.

Behavioral Questions

Describe a high-pressure project experience.
Explain a time you drove innovation.
Illustrate collaboration across diverse teams.
Discuss handling zero to one challenges.