About AIOS

AIOS is building the world’s first full-stack AI doctor.

We’re at $400M ARR, growing from $10M/yr 12 months ago. We’re the world’s fastest growing AI doctor.

We’re faithfully serving >200k/mo patients via Bolt Pharmacy, our main UK brand. We’re profitable.

Our strategy exists at the intersection of two strong theses:

1. The AI doctor that wins will get to escape velocity using GLP-1s, the fastest growing consumer product in history.

2. The $2T European healthcare market is overlooked by the most talented builders.

Our master plan:

• Step 0 → $100M/yr by end of 2025: We went from $10M to $100M in 6 months serving the UK GLP-1 market.

• Step 1 → $1B ARR by end of 2026: Over the last 12 months we've grown from 3k to 150k UK active GLP-1 patients. We’ll continue this growth curve to hit $1B ARR.

• Step 2 → $10B ARR by end of 2028: Blitzscale Europe. We’ll be Europe’s largest GLP-1 provider.

• Step 3 → $100B/yr by end of 2031: Get regulatory approval across Europe for our Full Autonomous Prescribing (FAP) system. Win contracts at scale with European payers to mass replace human labor. We’ll be the dominant full-stack AI doctor in Europe.

• Step 4 → $1T/yr by end of 2035: With one line of code and zero human time, you can use AIOS to treat any patient globally with any medication.

In so doing, we’ll become the world’s first trillion-dollar healthcare company.

We’re a young, founder-led company. This is still Day 1 and all our work is ahead of us.

You can read more about working with us here: Working at AIOS

Being a Conversion Rate Optimization (CRO) Lead at AIOS

We are building a world-class team.

As Conversion Rate Optimization (CRO) Lead at AIOS (Bolt Pharmacy), your mission is to grease the wheels of the CRO machine. You’ll keep every plate spinning—ideation, QA, project management, and test analysis—so we never stop testing at maximum speed.

CRO is one of our highest-leverage levers on paid efficiency and unit economics and is critical to scaling up from here. You'll own the day-to-day engine of experimentation across our funnel, including landing pages, intake flow, and checkout.

This is a hands-on role, and you’ll live in the weeds running experiments each day. We run on Omniconvert, PostHog, and HEX, but you’ll remain tool-agnostic and able to operate across whatever testing + analytics stack is required. You'll keep CRO compounding across every market as we scale the UK and expand into the EU.

Great performance in the role means the pipeline never stalls and we always have a full, prioritised roadmap, clean QA, and readouts the team can trust. If you really nail the role, you’ll be a leading candidate for future senior roles in the Performance Team.

This is a full-time, fully remote role. You can work async in the timezone of your choice, provided you have sufficient overlap with European and US time zones (midday Pacific Time) when needed.

You'll report directly to our Head of CRO (Michael McCann).

You'll also work most closely with our growing CRO and Web team, currently consisting of two Growth Engineers and one Growth Designer.

Key responsibilities

• Test ideation & roadmap: You keep the pipeline full and prioritised, turning analytics, session data, research, and paid-performance signals into a steady stream of high-quality hypotheses, sequenced by expected impact.

• Experiment setup: You structure clean experiments with a clear hypothesis, primary metric, sample size, and guardrails, so every test produces a decision rather than a debate.

• QA hygiene: You QA every variant before it goes live, across devices and edge cases. Nothing broken, off-brand, or non-compliant reaches a user, and the funnel stays protected from regressions.

• Analysis & readouts: You read results with real statistical rigour (significance, confidence, segment effects) and call the winner, the loser, or the "inconclusive, here's what's next." Your readouts are legible and trusted.

• Program management: You are the DRI for keeping the plates spinning. You coordinate the Growth Engineers and Designer, unblock builds, chase the pipeline, and make sure momentum never depends on one person's attention.

• Analytics & reporting: You own a clear weekly cadence outlining what shipped, what won, what we learned, and what's next. The wider team can act on your learnings without needing to decipher them via bloated follow-up.

Need to have

• Experience: You've spent 4+ years running a high volume (>hundreds) of experiments for DTC ecommerce brands in high-pace, high-transaction-volume environments.

• Workstream: You’ve had dozens of tests in flight simultaneously, unblocked every build, and laid out a roadmap that’s coherently sequenced and continues to progress forward. You don’t get overwhelmed easily.

• Hands-on: You've personally owned end-to-end testing, from ideation and setup all the way to QA and readouts. You remain close to the metal and haven’t just simply managed an agency and/or a team.

• Funnel literacy: You understand the ad-to-landing-page handoff and how CRO interacts with paid efficiency (CAC, quality score, LP experience).

• Analytical: You possess a sharp analytics and CRO mindset. You're comfortable inside the data, naturally curious, and able to dig past top-line numbers into segments and behaviour. You have a hunger to improve and are constantly upskilling.

• Structured: Written planning, explicit prioritisation, and a dependable reporting cadence are what you hang your hat on. Teammates can digest and apply your learnings immediately.

• Autonomous: You operate with high ownership in a fast-moving environment. You measure yourself in outcomes, and the outcomes here require real pace. You don’t need your hand held.

Nice to have

• Statistical sophistication: You may possess deeper stats fluency, from significance and power to sequential testing and guarding against false wins. This may not be a fully fledged strength yet, but the substrate is present.

• Research: You likely have some degree of comfort with both qual and quant, from heatmaps and session recordings to surveys and user testing. This helps you source new hypotheses.

• Regulated-industry CRO: You may have experimented inside a regulated industry before, where compliance shapes what you can test, say, and ship. You know how to keep velocity high without stepping over the line.

• Technical: You don't need to code, but you maybe understand how websites and data work under the hood. You can translate ideas into precise, buildable requests for the dev + design team and QA what comes back.

• Localisation: You've likely run experimentation across multiple markets/geographies and know the practical patterns, particularly in the UK + EU.

Our cultural standards

We aim to make this your life's work. This should be the most challenging, most rewarding role of your life. Accordingly, these are the core cultural standards to which we hold ourselves & our team-members:

1. Belief in the mission: We will have served 100 million patients by the end of 2035 and we transform the life of most patients who join. We have a lot of work to do. We are obsessed with our patients and are dedicated to the mission.

2. Unwavering integrity: We are at the frontier, so we often live in ambiguity with no trodden path. When we can't look to others for guidance, we must maintain impeccable ethics and unwavering integrity.

3. Only the paranoid survive: Bad sh*t is coming. By joining us, you're choosing to sail straight towards the storms with unhesitating conviction. However much we've already done, however far we've already come — it's still Day 1 and all our work is ahead of us.

4. If we're average we fail: We are only interested in "insanely great", a focus on the quality of our execution that in everyday life would be considered pathological. We have a dedication to excellence and reject incompetence.

5. Commitment to candor: That which can be destroyed by the truth should be. You get full transparency from the company and the company expects full transparency from you. We never say anything about someone that we wouldn't say to them directly. We give feedback with love and do not need to protect people from fleeting physical sensations.

6. A maniacal sense of urgency: We execute at an intensity that most people think is impossible. Speed is critical and we need things done yesterday. We all work very hard and in such a competitive world there really is no other way to win.

7. Enduring frugality: We are frugal. We hate being wasteful and we are anti-luxury. A culture of cheapness keeps us young. We spend our cash wisely & carefully — in a way that would make our grandmas proud.

8. Bulldozing barriers: The world is malleable and we shape it. We truly believe this and act accordingly. We are relentlessly resourceful and are at the mercy of no-one but ourselves. You'll be shocked how capable you are and how much you can achieve.

9. Keep your head down: We're boring people doing exciting work. We don't chase short-term status — we ignore short-term dopamine hits and focus on what matters. Outsiders will underestimate us and we revel in that.

10. The power of focus: We live in a world of power laws and we cannot overestimate the unimportance of practically everything. Know your One Thing, and nail it.

🎯

"You just build a f*ing amazing experience. Make each step amazing. Make every decision in the long term interest of the customer. Give the customer massively more value than you take."

Compensation & Benefits

You get paid above market salary and you get early stage equity, so you get really rich if we nail this.

• Compensation: $80k-$120k/yr, incl equity

Benefits

The stuff below is cool as well.

• Healthcare: comprehensive medical insurance (if appropriate).

• Remote: our team is fully distributed across the world and functions fully remotely.

• Personal development: budget for books, courses, coaching.

• Personal wellness: budget for gym, health apps.

• GLP-1s: free membership with a clinic offering GLP-1s.

• Health coaching: free biweekly health coaching so you stay healthy.

• Work coaching: free biweekly work coaching so you stay sharp + calm.

• Equipment: Macbook & work-from-home equipment provided as needed.

• What are we missing? We're still early so you get to shape our culture.

How to apply

1. Apply on Ashby