# Ben Callum Davis

> Staff engineer at Stripe

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/bencallumdavis

Technical founder and early-stage engineer with 12+ years experience building complex systems at scale. Proven track record of growing engineering teams while maintaining deep technical involvement.

## Work Experience
### Staff Engineer, Link @ Stripe
Jan 2025 – Present | US remote

### Co-Founder (side-project) @ Fun on the Internet
Jan 2023 – Present
Fun on the Internet is a small design studio building making fun things like Cool Stuff, an app to save all the cool stuff you find on the web.

### Staff Engineer @ Rupa Health
Jan 2020 – Jan 2025 | San Francisco, California, United States
Acquired by Fullscript in Oct 2024.

Joined as second engineering hire and built many of the core foundational systems. Established architectural patterns that enabled 21x growth leading up to acquisition. Led engineering team processes and standards, driving 3x increase in eng-led projects. Scaled engineering team from 2 to 14 through technical interviewing and mentorship.

Led redesign of results ingestion system, achieving major cost reduction and matching performance improvements through LLM-based automation. Built the developer ecosystem (API, SDK, webhooks, documentation), enabling a significant new integrations business – managed technical relationships with enterprise API clients and owned roadmap as eng lead.

Drove a bunch of focused tech initiatives including an API performance optimization with 80% faster response times and platform-wide UI modernization, delivering significant improvements in React rendering performance.

### Co-founder and CTO @ Junto
Jan 2019 – Jan 2020 | San Francisco
Junto was an iOS and Android app designed to help you learn all the soft skills required to succeed at work. Things like negotiation, creative thinking, motivating teams. An innovative interactive format made learning easy and fun 🍄.

· Designed an in-house graph-based authoring format that powered  interactive lessons, allowing course designers to create unique branching courses tailored to each student.
· Built a production team of educators, writers, and designers that produced over 4 high-quality, interactive courses monthly.
· Built a real-time, collaborative course editor to meet the production team’s rapid course development schedule.
· Designed and built the iOS and Android apps with React Native. Used by 20k+ professionals with a 87% course completion rate.
· Raised $1.5M in seed capital from Harrison Metal.

### Co-founder and CTO (Techstars NYC '17) @ Gather, Inc.
Jan 2017 – Jan 2019 | San Francisco Bay Area
Started in London 🌧, accelerated by Techstars in NYC 🍏, and finally landing in San Francisco ☀️, Gather was a powerful data management platform designed for customer success teams.

Hired several engineers. Led design and development of the enterprise-level data management platform that managed data for thousands of customers. Built an advanced ML-based predictive analytics system for churn prediction.

### Senior Software Engineer @ YPlan
Jan 2014 – Jan 2016 | London, United Kingdom
· Started the web product team using React—grew the product to 75% of the company’s revenue.
· Hired 3 engineers to join the web team.
· Built core platform APIs using that powered the mobile apps.

### Data Pipeline Engineer @ MPC
Jan 2013 – Jan 2014 | London, United Kingdom
Built the shot-review system, used by film directors and VFX supervisors to review work-in-progress on movies such as Guardians of the Galaxy and TV shows like Game of Thrones.


## Education
### BA in Computer Visualisation and Animation
Bournemouth University (NCCA)
Jan 2010 – Jan 2013


## Contact & Social
- LinkedIn: https://linkedin.com/in/ben-callum-davis-4a18722b
- Website: https://bencdavis.com

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Source: https://flows.cv/bencallumdavis
JSON Resume: https://flows.cv/bencallumdavis/resume.json
Last updated: 2026-03-22