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Engineering · New York, NY / SF

Make intelligence open and accessible to all.

Reflection AI is building open frontier models, releasing open weights, publishing the research behind them, and open-sourcing the tools to customize and build with them. Founded by former Google DeepMind researchers, including a core developer of AlphaGo, the company is positioning itself as America’s open frontier AI lab.

Visit reflection.ai ↗ New York, NY / SF $25B valuation
Founders
Misha Laskin

Misha Laskin

Co-founder

Former Google DeepMind researcher, working on reinforcement learning and large-scale model training before starting Reflection.

Ioannis Antonoglou

Ioannis Antonoglou

Co-founder

Former Google DeepMind researcher and a core developer behind AlphaGo.

$25BValuation · March 2026
2024Founded
Nvidia& SpaceX among strategic backers
3Sovereign & enterprise partnerships
01 · The opportunity

Open frontier AI, already landing sovereign and enterprise deals.

Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on, the open alternative to closed frontier labs, with model weights, research, and tooling all released openly so anyone can control their own intelligence. That openness is already translating into large, strategic commercial and government partnerships.

The thesis

Open beats closed

Open systems evolve faster, attract broader participation, and are safer, since more researchers can inspect and improve them.

The partnerships

Dell, the DOE, and Shinsegae

Delivering AI factories for enterprises with Dell, powering U.S. national labs under the Genesis Mission, and building Korea’s sovereign AI cloud with Shinsegae.

The scale

From $545M to $25B in a year

Emerged from stealth at a ~$545M valuation in March 2025; raised $2B at an $8B valuation by October 2025; and reached a $25B valuation with a ~$2.5B raise by March 2026.

02 · Backed by

Backed by top-tier investors.

A $25B valuation as of March 2026, with Nvidia and SpaceX among the strategic backers and compute partners.

Audacious Nvidia SpaceX
March 2025

~$545M valuation

Emerged from stealth as America’s open frontier AI lab.

October 2025

$8B valuation

Raised $2B, backed by strategic investors and compute partners.

March 2026

$25B valuation

A ~$2.5B raise, roughly a 3× step-up in five months.

In the press

Recent coverage.

03 · Open roles

What they’re hiring for.

Reflection is hiring across its Applied AI team and its Engineering, Foundations, Platform, Runtime, and Security orgs. Two Applied AI Forward Deployed roles are detailed here, a Forward Deployed Engineer taking agentic systems from discovery to production, and an FDE Lead owning post-training and evaluation, with the full list of open roles below.

Applied AI · Forward Deployed

Forward Deployed Engineer — AI Engineer

New York, NY / San Francisco, CA · On-site · Full time · 3+ yrs experience

What you’ll do

  • Own technical strategy and end-to-end delivery of agentic systems, from customer discovery to production launch.
  • Partner with Deployment Strategists and Sales to understand enterprise needs and architect transformative agentic applications.
  • Build with state-of-the-art models, orchestrating LLM workflows and integrating with enterprise infrastructure.
  • Collaborate with research teams to adapt and fine-tune models for customer-specific needs.
  • Support deployments across hybrid environments, public cloud, VPC, and on-premises, for scale, performance, and reliability.
  • Evolve the playbooks, processes, and best practices of a growing Forward Deployed Engineering org.

What they’re looking for

  • Strong software engineering background shipping production systems in Python and TypeScript.
  • Enterprise deployment experience in cloud or hybrid environments with Docker, Kubernetes, and CI/CD.
  • Hands-on with modern AI stacks, vector databases, RAG pipelines, agent orchestration, evals, and fine-tuning.
  • 3+ years delivering AI-driven enterprise solutions (FDE, SWE, or Applied AI Engineer).
  • High agency and ownership in fast-paced, customer-facing environments where the playbook is still being written.
Python / TypeScriptDocker · Kubernetes · CI/CDRAG · agents · evalsFine-tuningCustomer-facing
Applied AI · Post-Training

Forward Deployed Engineer Lead, Post-Training (LLM)

New York, NY / San Francisco, CA · On-site · Full time · 6+ yrs (2+ leading LLM post-training)

What you’ll do

  • Lead post-training engagements with enterprise customers: assess their data, define training strategies, design reward signals and verifiers, prepare datasets, run training loops, and evaluate against customer-specific benchmarks.
  • Design and build RL training environments for model adaptation, synthetic-data generation pipelines, reward-model training, and preference-data collection.
  • Build evaluation infrastructure: define what “better” means for each use case, build eval harnesses, curate test sets, and establish baselines that measure real-world performance.
  • Own the data pipeline from raw customer data to training-ready datasets, synthetic generation, quality inspection, cleaning, and format standardization.
  • Deploy post-trained models across hybrid environments (public cloud, VPC, on-premises) for inference performance, cost efficiency, and reliability at scale.
  • Shape and scale the post-training and evaluation practice, define playbooks and technical standards, and mentor engineers on the team.

What they’re looking for

  • Hands-on LLM post-training at scale: built and operated RL training environments and preference-optimization workflows on 50B+ parameter models, shipped to production.
  • Built synthetic-data generation pipelines, reward models, and verifiers, the data and feedback loops that make post-training work.
  • Deep evaluation methodology: designing evals that measure what matters, reading training dynamics, and telling a benchmark-good model from one that actually works.
  • Training infrastructure at scale: multi-node GPU clusters, large training runs, distributed-training debugging, and cost optimization.
  • Strong SWE fundamentals, production-quality code, dataset/model versioning, and reproducible workflows.
  • 6+ years engineering, including 2+ years leading LLM post-training (Tech Lead, Senior MLE on preference optimization, or Lead Applied Scientist running production RL).
  • Customer-facing experience or genuine interest in developing it, translating domain requirements into training strategies and measurable outcomes.
RL & post-trainingReward models · verifiersSynthetic dataEvals50B+ params · multi-node GPULeadership
The full list

More open roles.

Applied AI
  • Engagement Manager
    San Francisco / New York · On-site
  • Forward Deployed Engineer — AI Engineer
    Seoul · On-site
  • Forward Deployed Engineer — LLM Post-training
    San Francisco / New York · On-site
  • Forward Deployed Engineer, Lead — AI Engineer
    Seoul · On-site
  • Forward Deployed Engineer, Lead — AI Engineer
    New York / San Francisco · On-site
Foundations
  • MTS — Applications
    New York / London / San Francisco · On-site
  • MTS — Data Platform
    New York / London / San Francisco · On-site
  • MTS — Distributed Systems Engineer
    New York / London / San Francisco · On-site
  • MTS — Engineering Lead, Compute Platform
    San Francisco / London / New York · On-site
  • MTS — Engineering Lead, Platform Foundations
    San Francisco / London / New York · On-site
  • MTS — Engineering Lead, Shared Services
    San Francisco / London / New York · On-site
  • MTS — Platform Foundations
    New York / London / San Francisco · On-site
Platform
  • MTS — Compute Platform
    New York / London / San Francisco · On-site
  • MTS — Engineering Lead, Applications
    San Francisco / London / New York · On-site
  • MTS — Engineering Lead, Compute Platform
    San Francisco / London / New York · On-site
  • MTS — Research Software Engineer, Safety Evaluations Infra
    New York / London / San Francisco · On-site
Runtime
  • MTS — Mid-Training Infra
    San Francisco / London / New York · On-site
  • MTS — Pre-Training Infra
    San Francisco / London / New York · On-site
Engineering
  • MTS — IT Engineering
    New York / London / San Francisco · On-site
Security
  • MTS — Infrastructure Security
    San Francisco · On-site
  • MTS — Security Engineer
    San Francisco · On-site

MTS = Member of Technical Staff · all roles full-time, on-site.

Build the deployments behind open intelligence.

A frontier AI lab going from stealth to a $25B valuation in about a year, already landing sovereign and enterprise partnerships with Dell, the U.S. Department of Energy, and Shinsegae. Forward Deployed Engineering is how those deployments happen.