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BottleCap AI
Efficiency-Focused LLMs
Last verified August 17, 2026 · Updated daily
What BottleCap AI is building
BottleCap AI is building architecture-first, efficiency-focused foundational large language models and then immediately turning that research into commercial applications. Their first model is called CAP1, which already powers their first consumer app, Pulse, a community news aggregator on iOS. The stated goal is to improve LLM efficiency by 100x compared to current industry models. Rather than scaling compute endlessly like OpenAI or Google, they are moving beyond the transformer architecture entirely to find new approaches that reason better per unit of compute. They're also setting up an app development studio to commercialise the research, meaning B2B AI tools built on their own models are coming.
Why this matters
The name BottleCap is a deliberate joke about European tech being a tethered bottle cap compared to SpaceX rockets. The team is not joking about anything else. Tomas Mikolov invented Word2Vec, one of the most cited papers in the history of AI and literally co-invented the concept that made modern language models possible. Jaroslav Beck sold Beat Saber to Meta for a reported $40M+ in 2019. These are not first-time founders experimenting with a trend. The angel investor list reads like an AI founder hall of fame. Every single person on that cap table is a builder, not just a cheque writer. For a job seeker: getting in here early is like getting into ElevenLabs or Lovable before anyone knew what they were.
Open roles at BottleCap AI
3 positions we're tracking. Roles are re-checked daily and removed when filled.
Know when BottleCap AI is hiring before anyone else
A role stays uncontested for about four days. Here's the window — and where we put you in it.
From $9/month, cancel any time.
Watching BottleCap AI
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+Hiring outlook
10-person team with $7.5M and app studio buildout means hiring across research and product fast
Working at BottleCap AI
BottleCap AI: Efficiency-Focused LLMs. Founded , currently employees. What this means for you: opportunity to shape your role based on the company stage.
Most BottleCap AI jobs are based in Prague, Czech Republic.
How to actually get hired at BottleCap AI
Why applying the normal way doesn't work
BottleCap AI uses an ATS, but referrals still come first. Cold applications aren't ignored — they're just behind referrals, sourced candidates, and recruiter picks.
Who to contact at BottleCap AI
We haven't verified a contact route at BottleCap AI yet. At people in AI, the decision-maker is almost always the hiring manager, but that's a model, not something we've confirmed. We're working on it, and members get verified contacts first.
What BottleCap AI screens for
Contact: hey@bottlecapai.com (public on website). Jaroslav LinkedIn: linkedin.com/in/jaroslavbeck. David LinkedIn: linkedin.com/in/davidherel. X: x.com/bottlecapai. Best approach: email hey@bottlecapai.com with your proof of work attached. For research roles, address Tomas directly by name even if sending to the general address. For product and GTM roles, address Jaroslav. Keep it short, lead with the thing you built, and skip the cover letter format entirely.
Don't send a generic CV to BottleCap AI. Mirror the job posting's language to get past automated screening.
Don't make these mistakes
Don't approach with generic AI hype. Reference the company name joke (bottle cap vs SpaceX rockets) - it'll land. If you've played Beat Saber, mention it. Tomas Mikolov's Word2Vec paper has over 50,000 citations - reference it if relevant to your role.
Mistakes that kill BottleCap AI applications
At people, a copy-paste CV is immediately obvious. It's an instant no.
Nobody cares what you want. Start with The name BottleCap is a deliberate joke about European tech being a tethered bottle cap compared to SpaceX rockets and how you'd help.
Don't apply and wait. The median AI application gets no response ever. One follow-up at day five roughly doubles reply rates.
Applying to BottleCap AI? Get the contact, not the form.
The BottleCap AI interview process
4 stages · 14 days typical · take-home: yes · modelled from similar companies
We don't yet have verified candidate reports for BottleCap AI. What follows is the typical process for a -person AI company — treat it as a model, not confirmed detail.
Interview stages
Recruiter Screen
Phone or video · 30 min
Basic qualification and logistics
Recruiter or HR
Hiring Manager Interview
Video call · 45 min
Role fit and experience deep-dive
Hiring manager
Technical/Functional Round
Video call · 60 min
Skills assessment and problem-solving
Team members
Final Round
In-person or video · 60 min
Culture fit and cross-functional alignment
Senior leadership
BottleCap AI take-home assignment
BottleCap AI 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.
BottleCap AI interview timeline
At days, BottleCap AI's process is about average than typical for AI (14 days at this size).
Interviewed at BottleCap AI?
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 BottleCap AI interview experience →BottleCap AI jobs, frequently asked questions
How many jobs does BottleCap AI have open?
BottleCap AI currently has 3 open roles, last verified February 2025.
Does BottleCap AI hire remotely?
All current BottleCap AI roles are based in Prague, Czech Republic.
What roles is BottleCap AI hiring for?
BottleCap AI is hiring across Engineering, Marketing. The most recent opening is Developer Relations / Community.
How do I apply for a job at BottleCap AI?
Apply directly through the links above, or read our guide on how to actually get hired at BottleCap AI.
Does BottleCap AI respond to cold emails?
We're still collecting cold email data for BottleCap AI.
Who is the hiring manager at BottleCap AI?
At this size, hiring is usually run by the hiring manager.
How competitive is it to get hired at BottleCap AI?
-person AI companies see ~100-250 applicants per role in two weeks. The 72-hour window is your advantage.
How many rounds is the BottleCap AI interview?
4 stages: Recruiter Screen, Hiring Manager Interview, Technical/Functional Round, Final Round.
Is the BottleCap AI interview hard?
It concentrates on technical depth and system design rather than abstract puzzles. The stage candidates find hardest is Technical Interview.
Does BottleCap AI give a take-home task?
Yes, BottleCap AI includes a take-home assignment.
How long does BottleCap AI take to get back to you?
Around 14 days across the full process.
What should I prepare for the BottleCap AI interview?
Prepare for technical depth and system design. A -person startup wants proof you can ship, not that you can whiteboard.
Where is BottleCap AI based?
BottleCap AI is headquartered in Prague, Czech Republic.
Get BottleCap AI roles before they're posted
A role stays uncontested for about four days. Here's the window — and where we put you in it.
From $9/month, cancel any time.
Watching BottleCap AI
0 applicantsRole spotted & verified
1You get the alert
1You've applied
~8Hits the job boards
250+