Toolmill Briefswhat companies are building, read from their hiring

Company brief · updated 2026-10-18

Reflection AI

reflection.ai · software industry · Make intelligence open and accessible to all

45open roles
12new in 30 days
6closed in 30 days
0remote-eligible
acceleratinghiring velocity

What they're building

Commercial forward-deployed engineering for enterprise deployments of open-weight models strong signal

Today: Our forward-deployed team works alongside your teams from ideation through application design, development, and deployment

Roles: Forward Deployed Engineer, Lead - AI Engineer · Forward Deployed Engineer - AI Engineer · Forward Deployed Engineer, Lead - LLM Post-training · Forward Deployed Engineer - LLM Post-training · Engagement Manager

Requirements mention: agent orchestration · RAG pipelines · fine-tuning · customer-facing environments · public cloud · VPC · on-premises · AI deployment lifecycle · Statements of Work

Inference: the company is building out a forward-deployed engineering function across New York, San Francisco and Seoul to adapt its open-weight models for specific enterprise customers. Seven of the 46 open roles sit in Commercial.

Model evaluation and safety infrastructure strong signal

Today: Rigorously tested for safety and built for efficient performance

Roles: Member of Technical Staff - Evaluations · Member of Technical Staff - Research Software Engineer - Safety Evaluations Infrastructure · Member of Technical Staff - Pre-Training Evals Infra · Member of Technical Staff - Safety · Research Program Manager - Model Data & Evaluations Flywheel · Member of Technical Staff, Data Flywheel

Requirements mention: evaluation infrastructure · red-teaming and adversarial evaluation pipeline · sandboxed execution environments · audit logging · evaluation frameworks

Inference: the company is building evaluation and safety systems that feed into model release decisions, which two postings state directly.

Company-wide foundations platform for data, services and developer tooling moderate signal

Today: Infrastructure: open models served through an API platform or in customers' own environments

Roles: Member of Technical Staff - Data Platform · Member of Technical Staff - Engineering Lead, Data Platform · Member of Technical Staff - Shared Services · Member of Technical Staff - Engineering Lead, Shared Services · Member of Technical Staff - Platform Foundations · Member of Technical Staff - Engineering Lead, Platform Foundations · Member of Technical Staff - Applications · Member of Technical Staff - Engineering Lead, Applications

Requirements mention: production-grade pipelines at scale · Batch and streaming workloads · SLI/SLO design · Idempotency · backpressure · Terraform · Bazel · customer-facing surfaces

Inference: the company is building shared infrastructure for research, training and production, mostly internal but including customer-facing surfaces from the Applications team. Engineering has 10 open roles, second only to Research.

Training and compute infrastructure for frontier pre-training strong signal

Today: Open-weight models, including Beam, a 501B open-weight model

Roles: Member of Technical Staff - Pre-Training Infra · Member of Technical Staff - Compute Platform · Member of Technical Staff - Engineering Lead, Compute Platform · Research Program Manager - Research Infrastructure · Member of Technical Staff - Research Software Engineer

Requirements mention: distributed training systems · NCCL · multi-cloud scheduling · fault tolerance · training throughput · Kubernetes-based platform

Inference: the company is scaling its training infrastructure on a Kubernetes-based platform that spans several neo-clouds, according to the Compute Platform postings.

Training data acquisition and quality strong signal

Today: Open-weight models you can inspect, fine-tune, and deploy

Roles: Member of Technical Staff - Web Crawl Engineer · Member of Technical Staff - Data Ingestion Engineer · Member of Technical Staff - Multilingual Data · Member of Technical Staff - Data Quality Engineer (Pre-training) · Member of Technical Staff - Data Quality Engineer (Post-training) · Human Data Strategist

Requirements mention: URL frontier management · web-scale datasets · language identification · tokenizer design · LLM-as-a-Judge · expert data collection

Inference: the company is building its own pipeline for web-scale and human expert training data, with multilingual data a named focus.

Security, compliance and sovereign or government deals moderate signal

Today: AI systems that give enterprises, governments, and sovereign entities control over their intelligence

Roles: MTS Lead, Identity and Access Management · MTS Lead, Product Security · MTS, Technology & Security Engineering · MTS Lead, Technology & Security Engineering · Compliance Manager · GRC Engineer · Sovereign Deal Lead

Requirements mention: zero-trust architectures · WebAuthn / FIDO2 · FedRAMP · CMMC · ITAR/EAR · FAR/DFARS · enterprise agreements

Inference: the security and compliance postings name US federal and defense frameworks alongside a sovereign deal role, which points to government customers being part of the plan. Sales capacity for these deals is one role so far.

Where the headcount is going

DepartmentOpen
Research16
Engineering9
Security5
Commercial5
Technical Program Management3
Finance2
Legal2
People1
Sovereign1
Other1

Research (15), Engineering (10) and Commercial (7) hold 32 of the 46 open roles, so hiring centers on model research and the platforms behind it, with a smaller customer-facing team; 11 roles opened in the last 30 days, against 5 in the prior 30.

Who they need

Seniority: Mid 12, senior 8, manager 10, staff 3, principal 1, unknown 12.

Skills named most: Python (13), Kubernetes (12), software engineering (6), data pipelines (6), CI/CD (6), SOC 2 (5), ISO 27001 (5), Spark (5), Terraform (5), fine-tuning (5), APIs (4), Rust (3)

Locations: New York, NY (23), San Francisco, CA (21), Seoul (2). No remote roles are listed.

How to use this

If you're applying: If you have Python, Typescript, RAG and agent orchestration experience, look at the Forward Deployed Engineer - AI Engineer roles in New York and Seoul. If you build data pipelines (Spark, Beam, Flink, Kafka) or web crawlers, look at the Data Platform and Research data roles. None of the roles are listed as remote, so check each posting's location before applying.

If you're selling or recruiting: Research (15) and Engineering (10) have the most open roles, and 11 roles opened in the last 30 days. Postings name the tools in use: Spark, Flink, Kafka, Iceberg, BigQuery and Snowflake for data; Terraform, Pulumi and Kubernetes for infrastructure; Vanta for compliance; Okta for identity; and Ashby for recruiting. The Compute Platform lead posting lists managing vendors, and the Sovereign Deal Lead role covers government and sovereign-backed deals.

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Open roles (45)

TitleDepartmentLocationPosted
Member of Technical Staff - Pre-Training DataResearchSan Francisco, CA2026-10-22
Member of Technical Staff - Engineering Lead, Data AcquisitionResearchSan Francisco, CA2026-10-21
Strategic Finance ManagerFinanceNew York, NY2026-10-19
Human Data Operations ManagerResearchNew York, NY2026-10-16
Member of Technical Staff - Pre-Training Evals InfraResearchNew York, NY2026-10-13
Senior Talent Operations SpecialistPeopleSan Francisco, CA2026-10-09
Compliance ManagerLegalNew York, NY2026-10-09
GRC EngineerLegalNew York, NY2026-10-09
Member of Technical Staff - Shared ServicesEngineeringNew York, NY2026-10-01
Member of Technical Staff - Data PlatformEngineeringNew York, NY2026-09-30
Member of Technical Staff - Engineering Lead, Data PlatformEngineeringSan Francisco, CA2026-09-30
Member of Technical Staff - Engineering Lead, Compute PlatformEngineeringSan Francisco, CA2026-09-30
MTS, Technology & Security EngineeringSecurityNew York, NY2026-09-18
MTS Lead, Product SecuritySecurityNew York, NY2026-09-17
MTS, IT EngineerSecuritySan Francisco, CA2026-09-17
Member of Technical Staff - Multilingual DataResearchSan Francisco, CA2026-09-11
Sovereign Deal LeadSovereignSan Francisco, CA2026-08-28
Member of Technical Staff, Data FlywheelResearchNew York, NY2026-08-25
Member of Technical Staff - Post-TrainingResearchSan Francisco, CA2026-08-10
Member of Technical Staff - Research Software Engineer - Safety Evaluations InfrastructureResearchNew York, NY2026-07-27
Member of Technical Staff - Engineering Lead, Shared ServicesEngineeringSan Francisco, CA2026-07-15
Member of Technical Staff - Engineering Lead, Platform FoundationsEngineeringSan Francisco, CA2026-07-15
MTS Lead, Identity and Access ManagementSecurityNew York, NY2026-07-14
MTS Lead, Technology & Security EngineeringSecurityNew York, NY2026-07-14
Member of Technical Staff, Data Ingestion EngineerResearchSan Francisco, CA2026-06-19
Member of Technical Staff, Web Crawl EngineerResearchSan Francisco, CA2026-06-19
Engagement ManagerCommercialSan Francisco, CA2026-06-15
Forward Deployed Engineer, Lead - AI EngineerCommercialSeoul2026-06-09
Forward Deployed Engineer - AI EngineerCommercialSeoul2026-06-09
ControllerFinanceNew York, NY2026-06-04
Forward Deployed Engineer, Lead - AI EngineerCommercialNew York, NY2026-05-12
Research Program Manager - Model DevelopmentTechnical Program ManagementNew York, NY2026-04-30
Research Program Manager - Research InfrastructureTechnical Program ManagementNew York, NY2026-04-30
Research Program Manager - Model Data & Evaluations FlywheelTechnical Program ManagementNew York, NY2026-04-30
Member of Technical Staff - Pre-Training InfraResearchSan Francisco, CA2026-03-24
Member of Technical Staff - Compute PlatformEngineeringNew York, NY2026-03-20
Member of Technical Staff - ApplicationsEngineeringNew York, NY2026-03-12
Member of Technical Staff - Platform FoundationsEngineeringNew York, NY2026-03-12
Member of Technical Staff - SafetyResearchSan Francisco, CA2026-01-13
Member of Technical Staff, Pre-Training Data Quality EngineerResearchSan Francisco, CA2026-01-08
Member of Technical Staff, Human Data Quality EngineerResearchSan Francisco, CA2026-01-08
Forward Deployed Engineer - AI EngineerCommercialNew York, NY2025-12-17
Member of Technical Staff - EvaluationsResearchSan Francisco, CA2025-12-17
Member of Technical Staff - Pre-TrainingResearchSan Francisco, CA2025-10-07
Don't See Your Role? Apply Here!OtherSan Francisco, CA2025-10-07