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Apex
Company

A frontier AI lab for the physical world.

Apex is one of a small number of labs in the world training a foundation model from scratch. We sit alongside the chat-trained frontier labs as the third axis — focused on the physical world rather than language. Aether is the foundation model we train end-to-end on simulation trajectories, instrument data and design history, and ship into the disciplines that have to face reality.

What we build

The model, not a wrapper.

Aether is the foundation model at the centre of the company. We train it from scratch on simulation, instrument and design data — not on scraped text. The same backbone serves every discipline we touch.

EVERY MODALITY THE WORK PRODUCESONE SIMULATION-NATIVE FOUNDATION MODEL · SHARED WEIGHTSDISCIPLINE HEADS · OUTPUTS△CAD geometry◇Mesh▦RTL · netlist⌬Molecule∿Spectra◉Plate data</>Code≋Sensorembed · every modalityself-attn · multi-headcross-modal fusionphysics-aware mlpself-attn · multi-headdecoder · discipline routingAether · shared backbone△EngineeringCFD · FEA · controls⌬Discoverymolecules · ADMET▦SemiconductorsRTL → GDS◉Autonomous labsprotocols · analysis</>Softwarewhole-repo edits⌑MaterialsDFT · band structureOne model · shared weights · trained on simulation, instrument and design data — not scraped textv1.0 · sparse-MoE · every modality · every discipline
Mission

Why we're doing this.

The short version of an answer that takes longer in person. Long enough to be honest, short enough not to be a manifesto.

Why one AI

The next decade's hardest problems — climate, drug discovery, energy, semiconductors — share a substrate: the physical world runs on physics, chemistry, biology and silicon. A model that understands one understands the rest. Building five sibling models is a strategy mistake.

Why displacement

The seven-figure software stacks at incumbent vendors are mature, hard to dislodge and overdue for replacement. We don't compete with the incumbent CAE, EDA and computational-chemistry suites by being marginally cheaper. We compete by collapsing their entire shape into one model with one contract.

Why ship now

Foundation models for physical work have a five-year head-start over their incumbents. We are spending those years training on data nobody else has access to, while the incumbent stacks ossify on per-seat licences and Tcl scripts.

Principles

How we work, in six lines.

These are the principles we hire against and ship against. They are short on purpose — long principles are decorative.

01

Build the model

We are training one AI on simulation, instruments and design history. Not wrapping someone else's chat API and calling it an agent. The model is the company; everything else is product surface.

02

Numbers, not narratives

Every claim ships with a benchmark you can rerun. If we can't reproduce it, we don't publish it. If the comparison isn't fair, we say so on the same page.

03

Closed loops

We prefer projects where the model has to face physical reality — wet labs, fabs, test rigs, taped-out silicon. Reality is the regulariser. There is no substitute.

04

Safety by construction

Biosecurity, export-control and IP boundaries belong inside the model, not in a wrapper that someone can disable. We red-team every release against a versioned corpus before it ships.

05

Boring infrastructure

Production systems beat demos. We invest in the unglamorous middle — queues, retries, traces, rollback, on-call runbooks. The demo is a poster; the boring infrastructure is the product.

06

Compound on yourself

Every failed run, every bad mesh, every off-target hit is institutional memory. We build platforms that remember — for the customer and for ourselves.

The company so far

A short history.

We're young, on purpose. Apex is built to make decisions on a five-year horizon, with the urgency of a company that is.

  1. 2024

    Apex founded. First simulation-pretraining checkpoint runs end-to-end on a single rack.

  2. 2025

    First customer pilots in aerospace CAE and small-molecule discovery. Aether preview released to academic partners.

  3. 2026 · Q1

    Aether for drug discovery and semiconductor disciplines added to the platform. unlimited workloads across engineering reach production.

  4. 2026 · Q2

    Aether 1.0 generally available. Three sizes — 7B dense, 40B dense, 280B sparse-MoE — with 1M-token context and streaming rollouts.

  5. 2026 · later

    Sovereign deployments at national-lab consortium. First autonomous-lab campaign in ALCOA+-compliant production.

Leadership

The team setting the direction.

A small, deep bench. Researchers who have shipped models at scale, applied engineers who have shipped pilots, and an operations team that takes the boring parts seriously.

A. Singh
Founder & Chief Executive

Founder and CEO of Apex. Bet the company on a single thesis — the next decade of AI for the physical world runs on simulation, not language, and it deserves a foundation model trained from scratch. Sets research direction, owns hiring, signs every customer pilot, and is on the hook for every release that goes out.

Adrien Mercier
Co-founder & Chief Scientist

Co-founder and Chief Scientist. Twenty years of numerical methods across fluid, structural and quantum systems. Previously held appointments at two research universities; forty-plus peer-reviewed papers. Owns the technical direction of the Aether model family — the corpus, the architecture, the cross-domain pretraining programme that makes one model serve every discipline.

Maya Okafor
Chief Technology Officer

Built and operated distributed-systems infrastructure at hyperscale before joining Apex. Owns the agent runtime, the deployment substrate and the production security posture. The on-call rotation runs through her; the customer-impact bar on production incidents is hers to hold.

Lin Tanaka
Head of Research

Runs the research organisation and the publication programme. Previously led a physics-informed-ML group; published widely on simulation-augmented learning and long-rollout stability. Owns the research agenda, the eval suite and the public-benchmark commitments — including the ones that would have been easier not to publish.

Elena Park
Head of Applied

Runs the forward-deployed engineering team — the engineers who pair with customer teams and land the pilots. Background in industrial CFD and aerospace systems; has personally retired three seven-figure CAE renewals at customer sites. Believes pilots are won engineer-to-engineer, not in slideware.

Marcus Reiner
Head of Trust & Safety

Owns the refusal corpus, the capability-gating architecture and the external red-team programme. Previously led safety engineering at a major AI lab. Acknowledged contributor to the open biosecurity-evaluation literature; chairs the external safety advisory board's working sessions.

Karin Holst
Head of Platform Engineering

Owns the model-serving substrate, the eval-gated deploy pipeline and the observability stack. Previously built large-scale training infrastructure across two foundation-model labs. On-call lead for production Aether — the runtime is hers to make boring.

Daniel Brennan
Head of Engineering Discipline

Runs the engineering discipline — CFD, FEA, electromagnetics, multiphysics, additive, fatigue. Twenty years across aerospace and automotive CAE. Has personally retired three seven-figure CAE renewals at customer sites; the engineering accuracy bar inside Apex is his.

Sara Mendelssohn
Head of Discovery Discipline

Runs the Aether for drug discovery. Computational chemistry and structure-based design background; previously led discovery platforms at two clinical-stage biotechs. Owns the loop from in-silico hit to wet-lab confirmation — and the handoff between Aether for drug discovery and Aether for autonomous labs.

Wei-Lun Cheng
Head of Silicon Discipline

Runs the Apex semiconductor discipline — RTL through signoff on one database. Two decades of EDA across major foundry process nodes; holds half a dozen patents in physical-implementation tooling. Believes the next chip belongs to whoever closes signoff fastest with the smallest team.

Hana Solberg
Head of Design

Owns the studio surfaces — the canvas, the review threads, the agent traces engineers actually look at. Previously shaped design at two productivity-software companies known for unusually careful interfaces. The thing engineers see every day is hers.

Jonas Adelaide
Head of Business

Runs commercial. Background in enterprise software where renewals are seven-figure and procurement cycles are long. Believes pilots are the only honest sales motion — and the comparison memo, co-authored with the customer, is the real contract.

Researchers

The people doing the research itself.

The bench of senior researchers driving Aether. Each researcher names the area they lead, recent papers, and one open problem they would like to hear from you about.

Careers

The work, the team, the open roles.

We hire small numbers of unusually senior people, give them unusually large scope, and ship unusually large results. Remote-friendly, in-person-preferred, compensation honest.

  • ResearchResearch engineer — physics pretrainingSF / NYC / Remote
  • ResearchResearch engineer — evaluation & red-teamSF / NYC / Remote
  • ResearchResearch scientist — cross-domain transferSF / Remote
  • PlatformStaff engineer — long-horizon agent runtimeSF / Remote
  • PlatformSenior engineer — capability gating + safetySF / NYC / Remote
  • PlatformSenior engineer — distributed inferenceSF / Bay Area
  • AppliedFounding engineer — wet-lab integrationBoston / SF
  • AppliedSenior engineer — chip-design agentHsinchu / SF
  • AppliedForward-deployed engineer — aerospaceHuntsville / Seattle
  • AppliedForward-deployed engineer — pharmaBoston / Cambridge UK
  • Go-to-marketHead of business — enterpriseSF / NYC
  • DesignProduct designer — studio surfacesRemote (EU / US)
  • OperationsHead of trust & safetySF / DC
  • OperationsSecurity engineer — appsec + cloudRemote (US)
Compensation

Real numbers, not mystery meat.

We publish bands in every job description and we do not haggle the offer down. Equity and benefits below; cash bands on the role page itself.

Cash

Top-of-market base, honest range published in every job description. We do not negotiate against ourselves; we make our first offer the best offer we are prepared to make.

Equity

Refresh grants every two years, accelerated vesting on involuntary termination, transparent strike-price disclosure, ten-year post-termination exercise windows.

Time

Four weeks paid vacation, no questions. Sabbatical at year five. Real, not 'unlimited and never taken.'

Health

Premiums covered for the employee and dependents. Mental-health budget per employee per year. Coverage carries into a 12-month bridge if you leave.

Press

Quotes, brand assets and a media contact.

For interviews, brand assets, the company boilerplate or to verify a number before you publish it — please email press@apexworldlabs.com. We aim to respond within one business day.

Company boilerplate

Apex is a frontier AI lab — one of a small number of labs in the world training a foundation model from scratch. Aether is the simulation-native foundation model at the centre of the company: trained on solver trajectories, instrument data and design history, it runs forward in time across fluid, structural, electromagnetic, quantum, biological and digital systems under one set of weights. While the chat-trained frontier labs focus on language, Apex focuses on the physical world — engineering, semiconductors, drug discovery, autonomous labs, materials, fusion and software-engineering work. Founded in 2024 and headquartered in San Francisco.

Updated quarterly · last refresh April 2026

Brand assets

Marks, wordmarks, palette, typography specimens, and the usage rules — open on /brand. Print-grade variants on request.

If this sounds like your work, we'd like to meet you.

Open roles, custom roles, deferred roles. Send a note even if you don't see a perfect fit.