Josh Sephton

I'm an internet-scale executive with a proven track record of leading startup health-tech businesses to commercial success. I'm focused on building high performing teams delivering global impact through SaaS products. I deliver competitive advantage through the rapid launch and growth of scalable, innovative B2B and B2C products by providing clear vision, mission and goals. I'm motivated by fostering a culture of excellence and continuous improvement and by making a positive impact on society.



Early-stage deep tech computer vision SaaS startup providing clinical vital sign measurements from a video


June 2021 — present
  • Developed the company's technical strategy and teams (engineering, product and research) to align with commercial and product objectives
  • Recruited and retained hybrid in-house teams to replace near-shore partners, reducing costs while hitting major goals
  • Created an ISO-13485 and ISO-27001 compliant technology function to enable CE and FDA certification for medical devices
  • Raised pre-revenue Seed and Seed+ funding rounds by representing the technical functions at executive and board level, and to investors


Personal consultancy providing CTO services, focusing on project recovery for startups and agencies


September 2019 — June 2021
  • Provided an engineering and product roadmap for an established startup to scale from £50M to £100M revenue
  • Audited £1M project which had overrun by 18 months and led teams to completion with minimal additional expenditure
  • Renegotiated legacy SLAs for multinational hotel, saving £0.25M p/a without affecting service level objectives

Vet AI

Early-stage startup developing SaaS telemedicine products for the veterinary sector


August 2018 — August 2019
  • Scaled remote engineering team from 0 to 10 FTE and shipped first mobile app designed to flexibly gather data for machine learning
  • Owned product strategy and delivery of multiple software platforms from idea to revenue in 9 months
  • Raised £2.3M Series A at £10M valuation, representing tech to investors

Push Doctor

Growth-stage startup providing NHS and private remote healthcare

Head of AI

April 2017 — August 2018
  • Created a strategic vision for AI in healthcare, delivered to the board
  • Reduced customer service requests by 20% using a chatbot with no negative impact on NPS
  • Architected and implemented automatic consultation transcription pipeline to fill a data lake


Late-stage startup providing ad buying and management products for ecommerce businesses

Lead Engineer

August 2016 — April 2017
  • Led a team of 14 engineers to develop automated PPC ad management
  • Architected a large, distributed system to manage hundreds of millions of adverts in AdWords and Bing
  • Created an internal SDK to allow the rest of the engineering team to contribute to the project, reducing cost of delivering new features


Digital product studio focused on solving big problems for organisations

Principal Engineer

August 2015 — August 2016


March 2014 — August 2015
  • Led a team of 8 engineers to develop products for global brands
  • Created a user testing framework for Jaguar Land Rover as they developed a delivery-to-boot proposition
  • Owned the Cornerstone platform as it grew to £50M revenue

Exploding Phone

Specialist native mobile app development agency

iOS Engineer

February 2012 — March 2014
  • Built 20+ native iOS apps
  • Introduced agile development practices for team of 8 people
  • Managed projects ensuring they were delivered on-time and on-budget


People management, coaching, mentoring, hiring, scaling teams, managing managers

Go, Java, JavaScript, PHP, React, Kubernetes, Docker, GCP, AWS, SQL, NoSQL

Agile methodologies (scrum, kanban, xp), lean start-up methodology, design thinking, human centered design

Thought Leadership

7 effortless ways to avoid an AI disaster @ Hackernoon

Do you understand? @ Birmingham AI Meetup

Artificial Intelligence is Child's Play @ Towards Data Science

A trip to Russia isn't all it seeems @ Voxxed Days, Zurich


Uni. of Birmingham

2009 — 2012
Theoretical Physics & Applied Maths

St Edwards School

2004 — 2008
A Level

Mathematics — A; Further Mathematics — A;
Physics — A; Chemistry — B.