Angelia Muller
About Angelia Muller
Angelia (Angie) Muller is based in San Francisco. Crunchbase lists her current role as Partnerships at Stripe. She is also CEO and co-founder of Attunement AI, a role Crunchbase dates from December 2023. Her Crunchbase bio says she was a partnership lead at Stripe and NVIDIA before founding Attunement. Crunchbase lists her NVIDIA job as Partnerships Manager, from 2020 to July 2021. PitchBook says her partnerships work involved seed venture partners and machine learning startups, covering payment processing, synthetic data generation, and data labeling and annotation.
Attunement was part of Y Combinator's Winter 2024 batch. Y Combinator describes it as a company that turns fragmented behavioral health records into structured patient data that operators and AI systems can act on. Crunchbase lists Briar Smith as co-founder and CTO. Tracxn says she also co-founded an earlier company, Carbyn, and dates her start in the startup world to 2018. Crunchbase counts 2 companies founded. A speaker listing from Venture Cooperative also describes her as ex-Techstars.
She studied psychology as an undergraduate. Crunchbase names Columbia University and PitchBook names Barnard College. She holds a master's in Applied Neuroscience from King's College London.
Crunchbase lists 3 investments in 3 portfolio companies for Angelia Muller. None are lead investments, and Crunchbase records 1 exit. It does not say which company that was. The three rounds on her Crunchbase profile are a Series A in Magic (March 2015), a seed round in LOOMIA (August 2018) and a seed round in LVNDR Health (September 2021).
Her most documented deal is LVNDR. EU-Startups reported in September 2021 that the London-based company closed a seed round of about 1.7 million euros. Octopus Ventures led it, and she was named among the participating angel investors. PitchBook separately lists her with two investments, LVNDR Health (August 2021) and Picnic (Altrincham), dated January 2020. Different databases count her deals differently, and the totals above are Crunchbase's.
She has not published a thesis or a list of deals that we could find. Cheque sizes, ownership targets and the number of deals per year are not public.
We found no public record of Angelia Muller making an angel investment in an AI company. Her main AI involvement is as an operator. She runs Attunement AI, which applies AI to behavioral health records, and she previously worked on partnerships with machine learning startups at NVIDIA and Stripe.
She also writes publicly on clinical AI. Her LinkedIn posts include a piece about clinicians checking AI-generated summaries of patient charts. The piece argues that one wrongly attributed source can erode trust in the whole summary.
Crunchbase lists a Series A investment in a company named Magic. The sources we found do not describe what that company does, so we have not classed it as an AI deal.
Her recorded deals are early-stage rounds: two seed rounds and one Series A, per Crunchbase. The companies span sexual health technology (LVNDR), smart textiles (LOOMIA, per Crunchbase's listing) and business software (Picnic, per PitchBook). Tracxn's summary of her portfolio is health tech, and the one deal it records is in the United Kingdom. That is one company, not a stated geographic preference.
She has not publicly stated a check size, preferred stage or sector thesis. Crunchbase shows no lead investments, which is consistent with participating in rounds led by others. Founders in behavioral health, clinical AI and healthcare data are the most natural fit given her operating work, but this is an inference from her background, not something she has said.
- LVNDR Health: London-based sexual health technology company for the LGBTQ+ community. She joined its seed round in 2021, led by Octopus Ventures.
- LOOMIA: Listed on Crunchbase with a seed round dated August 2018. Backstage Capital is also listed as an investor.
- Magic: Listed on Crunchbase with a Series A dated March 2015. She is one of 9 investors on the profile.
- Picnic (Altrincham): Business software company listed by PitchBook with a January 2020 deal date.
- crunchbase.com/person/angelia-muller
- crunchbase.com/organization/attunement
- ycombinator.com/companies/attunement
- linkedin.com/in/angiemuller
- pitchbook.com/profiles/investor/442624-87
- tracxn.com/d/people/angelia-muller/__CQXDdI2PWhrg3-gvxBfma5uiZaDvaQ_MZ
- eu-startups.com/2021/09/london-based-lvndr-raises-e1-7-million-for-its
- crunchbase.com/funding_round/lvndrhealth-seed--1edb9225
Investing activity
Angelia Muller has made 3 investments according to Crunchbase across 3 portfolio companies, and has seen 1 exit and founded 2 companies.
Deals
Frequently asked questions about Angelia Muller
Who is Angelia Muller?
Angelia (Angie) Muller is a San Francisco-based angel investor. She works in partnerships at Stripe and is CEO and co-founder of Attunement AI, a Y Combinator W24 company. She previously held partnerships roles at NVIDIA and Stripe.
What stage does Angelia Muller invest in?
Her recorded investments are two seed rounds and one Series A, according to Crunchbase. She has not stated a preferred stage publicly.
What is Angelia Muller's check size?
It is not public. We found no statement from her or reported figures for her own checks, so we do not give one.
Does Angelia Muller lead rounds?
Crunchbase shows 0 lead investments across 3 deals. Her known deals, such as LVNDR's seed round, were led by other investors.
What is Angelia Muller's background in AI?
She is CEO of Attunement AI, which structures behavioral health records for clinicians, operators and AI systems. Before that she worked on partnerships with machine learning startups at NVIDIA and Stripe.
How can founders contact Angelia Muller?
She is on LinkedIn at linkedin.com/in/angiemuller and lists a personal site at angie.world. Check her profiles for how she prefers to be approached.
Is Angelia Muller an angel investor?
Yes. Angelia Muller invests personally as an angel and is Partnerships at Stripe. Crunchbase counts 3 investments and 1 exit.
Where is Angelia Muller based?
Angelia Muller is based in San Francisco, California, United States.
How can founders reach Angelia Muller?
Founders on Lounge can see Angelia Muller's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Angelia Muller to their Investor Pipeline to track the conversation.