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ReflectionAI

Technical Staff, Training - London

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London, England
In-Office
London, England

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Our 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.

Role Overview:

As a member of the technical staff focused on research and training at Reflection, you will work at the forefront of AI research, conducting groundbreaking studies at the intersection of large language models (LLMs) and reinforcement learning (RL) to build superintelligent autonomous coding systems. You will explore novel methodologies, push the boundaries of LLM capabilities, and contribute directly to the development of agentic AI systems that redefine what is possible in autonomy.

Key Responsibilities:
  • Conduct original research in DL and RL with a focus on advancing the capabilities of LLMs and agentic systems.

  • Collaborate with world-class researchers to design and execute experiments that lead to breakthrough innovations.

  • Explore novel architectures, training methodologies, and reinforcement learning techniques to enhance model autonomy and decision-making.

  • Mentor and collaborate with junior researchers and engineers to foster a culture of innovation and excellence.

Qualifications:
  • Proven track record of conducting breakthrough research at a top lab in industry or academia

  • Experience building state-of-the-art language model or reinforcement learning systems at a frontier lab in industry or academia.

  • Deep expertise in language models or reinforcement learning, with a strong track record of impact in your previous roles.

  • Prior experience working with LLMs or foundation models is strongly preferred.

  • A passion for building agentic systems and advancing the state of AI autonomy.

What We Offer:

We believe that to build superintelligence that is truly open, you need to start at the foundation. Joining Reflection means building from the ground up as part of a small talent-dense team. You will help define our future as a company, and help define the frontier of open foundational models.

We want you to do the most impactful work of your career with the confidence that you and the people you care about most are supported.

  • 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, wellness and time-saver stipend, commute benefits, education stipend, and relocation support.

  • Opportunities to connect with teammates: lunch and dinner are provided daily. We have regular off-sites and team celebrations.

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

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