The Anti Job Board
last verified 2 oct Β· updated daily
hiring now

get hired at

Ineffable Intelligence

Frontier AI lab building a superlearner that discovers all knowledge through reinforcement learning

3 open rolesSeed Β· $1.1B
size
β€”
backers
SCCALALVP+12
hq
London
industry
AI

Open roles at Ineffable Intelligence

3 positions we're tracking, re-checked daily

  • Research Engineer / Member of Technical Staff (RL)

    londonSeniorfirst seen 5 months ago
    apply β†—
  • Research Scientist (RL Theory / Generalization)

    londonMid-levelfirst seen 5 months ago
    apply β†—
  • Infrastructure / ML Systems Engineer

    londonMid-levelfirst seen 5 months ago
    apply β†—
tracking Ineffable Intelligencelast checked October 2, 2026

Know when Ineffable Intelligence is hiring before anyone else

A role stays uncontested for about four days. Here's the window, and where we put you in it.

notify me when Ineffable Intelligence hires

From $5.99/week, cancel any time.

  1. livewatching Ineffable Intelligence0 applicants
  2. +2hrole spotted & verified1
  3. +4hyou get the alert1
  4. day 3you've applied~8
  5. day 7+hits the job boards250+
the product

What Ineffable Intelligence is building

Ineffable Intelligence is building what it calls a superlearner: an AI system that discovers knowledge and skills entirely from its own experience, through reinforcement learning, without relying on human-generated data as its primary input. The distinction matters. Every major AI model today, GPT-4, Gemini, Claude, is trained primarily on human text. That creates a ceiling: the model cannot surpass what humans have already expressed. Ineffable's bet is that reinforcement learning, the paradigm that produced AlphaGo and AlphaZero, can be extended beyond games and into open-ended knowledge discovery. A superlearner would interact with its environment, generate its own hypotheses, test them, fail, adjust, and iterate across domains from motor control to mathematics to scientific reasoning, without needing a human corpus as its training foundation. Silver's ambition, stated in the company's founding materials, is for the superlearner to rediscover and then transcend the greatest inventions in human history: language, science, mathematics, and technology. The company's website uses a capital T on That: "Our mission is to make first contact with superintelligence."

the money

Why this matters

The case for RL as the path to superintelligence is not new, but it has never been better resourced or better timed. Two things have changed. First, LLM scaling is showing diminishing returns. The consensus inside frontier labs is that simply adding more parameters and more data yields smaller capability jumps than it did three years ago. Second, AlphaZero proved the core thesis in constrained domains: a system that learns from scratch, with no human data, can reach superhuman performance. AlphaZero took three days to master chess, shogi, and Go simultaneously at a level that decades of human expert programming could not match. Ineffable's bet is that this paradigm, applied at scale and generalized beyond games, is the path that avoids the human-data ceiling entirely. Silver describes this as "renewable fuel": where human data is a finite resource, self-generated experience is unlimited. The UK government's Sovereign AI Fund making this its second-ever direct equity investment is a geopolitical signal as much as a financial one: the UK is explicitly trying to anchor superintelligence research in London alongside DeepMind.

Investors: Sequoia Capital (co-lead, Alfred Lin and Sonya Huang), Lightspeed Venture Partners (co-lead, Ravi Mhatre and Raviraj Jain), Nvidia ($250M+), Google, Index Ventures, DST Global, Flying Fish Partners, EQT Ventures & Growth, Evantic Capital, Wellcome Trust, Bond Capital, British Business Bank, UK Sovereign AI Fund

the outlook

Hiring outlook

Very High. $1.1B deployed into a small team with no product, no revenue, and no published roadmap. Every dollar is for talent. The Ashby page is the only public signal.

Hiring intensity8/8

Working at Ineffable Intelligence

Ineffable Intelligence is a AI company based in London. Working at a AI company at this stage means opportunity to shape your role based on the company stage.

London is where most Ineffable Intelligence positions are located.

How to actually get hired at Ineffable Intelligence

Why applying the normal way doesn't work

Ineffable Intelligence runs an applicant tracking system, but hiring managers still work referrals first. A cold application to Ineffable Intelligence isn't dead, it's just fourth in line behind internal referrals, sourced candidates and recruiter pipelines.

Who to contact at Ineffable Intelligence

Who decides
the hiring manager
Best channel
LinkedIn or direct email

What to show them

This is the live role. At frontier labs, Member of Technical Staff typically covers a broad spectrum from infrastructure engineers who scale training runs to scientists who propose and test novel RL algorithms. Silver's specific research arc from Deep Q-Networks through AlphaGo to AlphaZero suggests the initial team will be heavy on people who understand both the algorithmic side (policy gradient methods, Monte Carlo tree search, model-based RL) and the systems side (distributed training, parallel environment simulation, experiment management at scale). Core skills: Deep reinforcement learning (policy gradient, actor-critic, MCTS, model-based RL), Python/JAX/PyTorch, large-scale distributed training, parallel simulation infrastructure, experiment tracking and evaluation design, understanding of both theoretical RL and production-scale systems Proof of work: Reproduce a result from a published RL paper that demonstrates sample efficiency or generalization beyond single domains. Publish the code with a clear README explaining what design decisions you made, where the original approach struggled, and what you changed. A blog post explaining your experimental findings at the level Silver's UCL lectures operate at is the most credible signal you can send.

A cold email that works at Ineffable Intelligence

Subject: Research Engineer / Member of Technical Staff (RL), [your one-line proof]
Hi David, I reproduced [specific RL paper result] and found [specific deviation from claimed performance] at [specific scale]: [link]. The interesting failure mode was [specific finding], which I think is relevant to scaling RL beyond constrained domains. I have been thinking about this problem since [AlphaZero / specific paper] and believe [specific hypothesis]. Worth a conversation?
Get personalised templates β†’

What Ineffable Intelligence screens for

The Hiring Signal Sequoia's Sonya Huang said publicly that only a tiny number of people have done truly foundational AI work, and Silver is one of them. That framing is the hiring signal. Ineffable is not hiring for product, for sales, or for operations. It is hiring for research. The $1.1B is a talent acquisition budget for people who can sit alongside David Silver and work on the hardest open problem in AI. The company has no product, no customers, and no revenue. What it has is capital, a specific scientific thesis, and one of the most credible research leadership teams ever assembled in the UK. The investor roster sharpens the picture further. Nvidia's $250M+ contribution is not passive. Nvidia provides compute partnerships and GPU access at preferential terms for companies in its investment portfolio. That is critical for a RL lab: superlearner training requires massive parallel simulation capacity, running thousands of environments simultaneously. Nvidia's infrastructure backing is the reason the research agenda is technically feasible at all. Google's participation is equally telling: they lost Silver after 13 years and invested in the company he left to found. That is the clearest possible endorsement of the scientific thesis from the institution most threatened by its success. One confirmed live role: Member of Technical Staff at jobs.ashbyhq.com/ineffable/224b677d-a130-4497-90fa-95fb72aa58d7. Chrome was unavailable to render the full JS spec β€” check the URL directly before reaching out. "Member of Technical Staff" is the standard title at frontier AI labs (OpenAI, Anthropic, DeepMind) for senior research engineers who operate at the boundary of research and engineering: running experiments, building training infrastructure, and contributing to model architecture decisions.

A tailored CV beats a generic one. Use Ineffable Intelligence's job description language to clear filters.

avoid

Don't make these mistakes

Describing yourself as passionate about AGI or superintelligence. Silver has spent 13 years building systems that actually work. He will hire people with specific, demonstrated technical contributions, not people with strong views about the future of AI.

Mistakes that kill Ineffable Intelligence applications

  • A recycled CV gets rejected fast at Ineffable Intelligence ( people). They notice.

  • Don't open with what you want. Open with what Ineffable Intelligence is dealing with right now β€” The case for RL as the path to superintelligence is not new, but it has never been better resourced or better timed, and what you'd do about it.

  • Most AI applications get ghosted. A day-five follow-up can double your response rate.

tracking Ineffable Intelligence

Applying to Ineffable Intelligence? Get the contact, not the form.

notify me when Ineffable Intelligence hires

The Ineffable Intelligence interview process

4 stages14 days typicaltake-home: yesmodelled from similar companies

We don't yet have verified candidate reports for Ineffable Intelligence. What follows is the typical process for a -person AI company, so treat it as a model, not confirmed detail.

Interview stages

  1. 1

    Recruiter Screen

    Phone or video Β· 30 min

    What it testsBasic qualification and logistics
    Usually run byRecruiter or HR
  2. 2

    Hiring Manager Interview

    Video call Β· 45 min

    What it testsRole fit and experience deep-dive
    Usually run byHiring manager
  3. 3

    Technical/Functional Round

    Video call Β· 60 min

    What it testsSkills assessment and problem-solving
    Usually run byTeam members
  4. 4

    Final Round

    In-person or video Β· 60 min

    What it testsCulture fit and cross-functional alignment
    Usually run bySenior leadership

Ineffable Intelligence take-home assignment

Ineffable Intelligence includes a take-home exercise in their interview process. For AI roles, this typically involves a practical problem that takes 2-4 hours. Focus on clean, working code over premature optimization. They're evaluating how you think and communicate, not just the solution.

Ineffable Intelligence interview timeline

Expect 14 days total. Compared to similar AI companies (14 days median), Ineffable Intelligence is about average.

Interviewed at Ineffable Intelligence?

Tell us how it went: stages, questions, timeline. Takes 90 seconds and it's how this page stays accurate for the next person.

Submit your Ineffable Intelligence interview experience β†’

Ineffable Intelligence jobs, frequently asked questions

How many jobs does Ineffable Intelligence have open?

As of October 2, 2026, Ineffable Intelligence has 3 open positions.

Does Ineffable Intelligence hire remotely?

Currently, Ineffable Intelligence only has in-office roles in London.

What roles is Ineffable Intelligence hiring for?

Ineffable Intelligence is hiring across Engineering, Data. The most recent opening is Research Engineer / Member of Technical Staff (RL).

How do I apply for a job at Ineffable Intelligence?

Apply via the links above. For tips, read our guide on how to get hired at Ineffable Intelligence.

Does Ineffable Intelligence respond to cold emails?

Not enough data yet on Ineffable Intelligence's cold email response rates.

Who is the hiring manager at Ineffable Intelligence?

At this size, hiring is usually run by the hiring manager.

How competitive is it to get hired at Ineffable Intelligence?

Expect 100-250 applicants in the first two weeks for AI roles at this size. Apply within 72 hours for best odds.

How many rounds is the Ineffable Intelligence interview?

4 stages: Recruiter Screen, Hiring Manager Interview, Technical/Functional Round, Final Round.

Is the Ineffable Intelligence interview hard?

Expect technical depth and system design, not algorithm trivia. Candidates report Technical Interview as the toughest stage.

Does Ineffable Intelligence give a take-home task?

Yes, Ineffable Intelligence includes a take-home assignment.

How long does Ineffable Intelligence take to get back to you?

Around 14 days across the full process.

What should I prepare for the Ineffable Intelligence interview?

technical depth and system design is the priority. Show you can work autonomously β€” that matters more than algorithms at people.

Where is Ineffable Intelligence based?

Ineffable Intelligence is headquartered in London, US.

tracking Ineffable Intelligencelast checked October 2, 2026

Get Ineffable Intelligence roles before they're posted

A role stays uncontested for about four days. Here's the window, and where we put you in it.

notify me when Ineffable Intelligence hires

From $5.99/week, cancel any time.

  1. livewatching Ineffable Intelligence0 applicants
  2. +2hrole spotted & verified1
  3. +4hyou get the alert1
  4. day 3you've applied~8
  5. day 7+hits the job boards250+

Related

More AI companies hiring

Other startups we track in the same space.