Jack Theobald

Jack Theobald

Designer in London, He/Him


Hello, I’m Jack; a designer based in London. I’ve spent the last eight years helping to bring interfaces and brands to life through strategic design.

I'm specifically passionate about designing interfaces, web pages, and versatile and efficient design systems.

Work Experience

2023 — Now

Build, manage and scale cloud native applications without overwhelming your engineers with the complexity of Kubernetes.

2021 — 2023

Shaping the future of travel by developing the complete toolkit for selling flights online.

After contributing to a successful rebrand of Duffel. I was responsible for scaling up the website by taking it to higher design standard and removing any technical debt. I was also required to understand the business requirements and customer needs, creative messaging with clear positioning, ideation, prototyping, all the way to working closely with devs on implementation.

2021 — 2021

Toit is the software platform for IoT devices. We make it as easy to create software for microcontrollers as it is to build a mobile app.

As the first designer, I rebranded and designed the company's website and product revamp. Alongside this, I created the foundational design system that the brand and product we're built from.

2018 — 2020

While freelancing I've worked with a diverse selection of clients from small start-ups to established companies and organisations; delivering bespoke solutions rooted in usability, creativity, aesthetics and craft.

Clients such as; Raspberry Pi, Code Club, Formula One, Network Rail, Primark, Bionical, Mitsubishi & GEEIQ etc.

2016 — 2018

I was responsible for re-branding the company under one consolidated name, heading up projects for applications, web systems, and identity across all products. Transforming the company into one fit for the digital age, with an identity to match its stature as a market leader.

2015 — 2016

Digital design for human beings, aiding clients large and small to improve interactions.


Jimmy's Street Food

Bridging the gap between the stereotypical kebab and quality food.

Side Projects

MacLean Wellness

Performance coach branding and supportive marketing.



After months of planning, designing, building, testing, and implementation, we are finally releasing the newly refreshed Duffel brand into the world.


What is it like working as a designer at Duffel? We interviewed our latest additions to the brand design team – Jack and Medeea – to find out about their first three months.