Platform Engineer at Metis, Inc. (San Francisco, CA)

Metis, Inc.· San Francisco, CA·4d ago

Job description

About the Role

As a Platform Engineer at Metis, you’ll join a small, product-driven engineering team building modern infrastructure that powers critical workflows for our own training platform. You’ll own projects end-to-end, designing, building, and shipping production systems that directly impact customers. You’ll write production-grade code, reason about systems holistically, and make decisions that tie directly to business outcomes. You will be moving fast while upholding a high bar for code quality, scalability, and simplicity.

What You’ll Do

Help scale and work on a core part of our Mantis Platform
Helping to optimize our training stack, work on expanding platform scalability and functionality
Write code and leverage AI tools effectively to get the highest quality of work done in the fastest time

Requirements

Strong coding fundamentals in at least one modern language (Python, Go, Rust, etc.).
Ability to break down ambiguity and ship simple solutions to complex problems.
Familiarity with system-design, general coding practices in terminal, and high level thinking

Compensation & Benefits

Base: $150,000–$850,000
Significant Equity
Full medical, dental, and vision
Wellness & L&D stipend
Equinox membership
Breakfast, lunch, and dinner provided (Unlimited Doordash)
$25,000 housing stipend

About Metis

Metis helps enterprises and labs build the most reliable AI agents by leveraging post-training. Our platform enables the creation, improvement, and deployment of the most capable frontier agents designed for rigorous, real-world workflows.

Momentum

0 → six-figure monthly revenue in the last six weeks
Working with several Fortune 500 enterprises & frontier AI labs
Growing 150%+ MoM

Backed by

Y Combinator, CRV, and executives from OpenAI, Google, Mercor, NVIDIA, and others.

Why work at Metis, Inc.

Compensation and benefits: Base salary ranges from $150,000 to $1,000,000 depending on role, with significant equity. Full medical/dental/vision, wellness & L&D stipend, Equinox membership, unlimited Doordash for meals, and a $25,000 housing stipend.
Culture: Tight-knit, product-driven engineering team with a high bar for correctness and speed. Engineers own projects end-to-end and tie decisions directly to business outcomes.
Work environment: Office-based in San Francisco (hybrid/remote policy not specified, but roles are listed as San Francisco). Perks include breakfast, lunch, and dinner provided via unlimited Doordash.
Engineering culture: Emphasis on writing production-grade code, leveraging AI tools to accelerate development, and reasoning holistically about systems. Opportunities to work at the intersection of cutting-edge ML research and scalable engineering.
Growth trajectory: Joining at an early stage with explosive revenue growth and high impact; roles span platform engineering, research engineering, forward engineering, and operations.

About Metis, Inc.

Company Overview

One-liner: Metis helps enterprises and frontier AI labs build the most reliable AI agents through a post-training platform that enables creation, improvement, and deployment of capable agents for rigorous real-world workflows.
Entity Type: Private (backed by Y Combinator, CRV, and executives from OpenAI, Google, Mercor, NVIDIA)
Headquarters: San Francisco, California, USA
Founded: Not publicly available
Founders: Not publicly available

Core Business

Primary industry: Artificial Intelligence – post-training and AI agent infrastructure
Target customers: B2B – Fortune 500 enterprises and frontier AI labs
Mission or purpose: To enable enterprises and labs to build the most reliable AI agents by leveraging post-training, bridging the gap between research prototypes and production-grade systems.

Products & Services

Mantis Platform: A post-training platform for creating, improving, and deploying AI agents. It supports reinforcement learning, synthetic data generation, reward modeling, and human feedback integration, designed for mission-critical workflows.

Market Standing

Valuation/Market Cap: Not disclosed
Key Metric: Monthly revenue – six-figure range (reached from $0 in the last six weeks); growing 150%+ month-over-month
Notable Investors/Partners: Y Combinator, CRV, and executives from OpenAI, Google, Mercor, NVIDIA
Growth Signals: Rapid revenue growth (0 to six-figure MRR in six weeks), 150%+ MoM growth, working with several Fortune 500 enterprises and frontier AI labs

Competitive Advantages

Specialized post-training focus – Metis focuses exclusively on the post-training phase, a critical but underserved step in building reliable AI agents for production environments.
Traction with top-tier customers – Already serving Fortune 500 enterprises and leading AI labs, demonstrating trust and real-world applicability.
Backing from elite investors and industry executives – Y Combinator, CRV, and leaders from OpenAI, Google, and NVIDIA provide credibility and deep AI expertise.
Fast iteration and high engineering bar – The team moves quickly while maintaining high standards for code quality, scalability, and simplicity.

Strategic Focus

Building an autonomous post-training agent – Research and development of an autonomous system (leveraging the Mantis platform) that can improve AI agents through reinforcement learning, synthetic data, and real-world interactions.
Scaling the platform – Optimizing training stack, expanding platform scalability, and deploying models in production for enterprise customers.
Pushing the state of the art – Publishing research, conducting large-scale experiments, and refining methods in applied reinforcement and preference optimization.

Sources