Company profile

Reflection Tech Stack

Open frontier AI model lab serving enterprise and sovereign deployments

Software Development New York, NY 51–200 employees Privately Held

Reflection is a New York-based AI research lab building open frontier models for enterprises, governments and sovereign entities. Its stack pairs PyTorch and JAX training with Slurm, Ray, Triton and NCCL across both GCP and AWS, pointing to large-scale distributed GPU training. Hiring skews heavily senior and lead-level across engineering, data and research, while a forward deployed engineering build-out shows the lab pushing research into customer deployments.

Tech Stack 77 technologies

Core StackPython TypeScript Docker Kubernetes PyTorch RAG Tableau Apache Spark React FastAPI Go gRPC AWS Terraform Pulumi Prometheus Grafana OpenTelemetry RLHF Ray Apache Beam Slurm JAX Triton NCCL OIDC GCP OPA Bazel Protocol Buffers+46 more

What Reflection Is BuildingChallenges and projects from their job posts

◆Challenges

Scaling research infrastructure
Bridging AI research to enterprise and hybrid deployments
Multi-cloud scheduling challenges
Scaling security controls to GPU capacity
Ensuring data quality and governance
Complex deal structures

▲Active Projects

Frontier-scale training infrastructure scaling
Building a forward deployed engineering function
Red-teaming evaluation and safety infrastructure
Synthetic data and reinforcement learning pipelines
Reusable QA pipelines for pre-training data
Networking primitives stack

Hiring Activity

Steady120 roles · 15 in 30d

Department

Engineering

Data

Research

Security

Legal

Marketing

Sales

Finance

Seniority

Senior

Lead

Mid

Manager

Notable leadership hires: Safety Lead, Community Lead, Platform Foundations Lead, Engineering Lead, Data Ingestion Lead

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About Reflection

Reflection is a privately held AI research lab headquartered in New York, NY, with 51–200 employees. It develops open, customizable AI models that customers can own and control, targeting enterprises, governments and sovereign entities. The team includes researchers with prior frontier LLM experience. Hiring spans the United States, United Kingdom and South Korea, with a mix of engineering, data, research, security and smaller go-to-market and legal functions.

HeadquartersNew York, NY

Company Size51–200 employees

Hiring MarketsUnited States, United Kingdom, South Korea

Frequently Asked Questions

What tech stack does Reflection AI use?

Reflection uses Python, PyTorch, JAX, Triton, NCCL, Ray, Slurm, Apache Spark and Beam, Kubernetes, Terraform, Pulumi, Go, gRPC, FastAPI, React, Prometheus, Grafana and OpenTelemetry on GCP and AWS.

Where does Reflection AI hire?

Reflection is headquartered in New York, NY and hires in the United States, United Kingdom and South Korea, mostly for senior and lead-level engineering, data and research roles.

What is Reflection AI working on?

Projects include frontier-scale training infrastructure, a forward deployed engineering function, red-teaming evaluation pipelines, QA pipelines for pre-training data, and synthetic data and reinforcement learning pipelines.

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How this profile is built

Reflection's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.