Software Engineer - Part-Time Product Support (WebAssembly, CheerpJ)

Leaning Technologies is seeking a talented Software Engineer for a part-time technical product support role based in our UK office at Nexus, on the University of Leeds campus. This is a flexible, part-time position, ideal for students or those seeking a stable part-time role.

The role is available immediately (August 2025), with an initial duration of 3 months, and the possibility of extension. Interns and part-timers often join us for longer periods.

We develop software tools such as compilers, virtual machines, and JVMs targeting the Browser and WebAssembly. One of our products, CheerpJ ( website , docs ), is a JVM/JRE in WebAssembly for browsers, enabling Java applications to run on modern browsers. CheerpJ powers applications used by over 300,000 users worldwide since 2017.

We are looking for an enthusiastic software engineer interested in modern web technologies and WebAssembly, to support pre-sales integration and testing for organizations exploring CheerpJ. This role offers exposure to cutting-edge WebAssembly technology and collaboration with a talented team of experts.

• Undergraduate or postgraduate student studying Computer Science or related discipline, or equivalent experience
• Self-taught candidates considered
• Excellent communication skills
• Proficiency in HTML, CSS, and JavaScript
• Interest in Web technologies including WebAssembly
• Basic knowledge of Java
• Located in Leeds

You will work on:

• Supporting customers with CheerpJ integration and testing
• Diagnosing and resolving issues related to CheerpJ on Java-based infrastructure
• Communicating with customers and developers
• Supporting the technical sales team
• Improving CheerpJ documentation

For more insight, visit our Developer Labs and GitHub .

• Hybrid work model: in-office at least 1 day/week, flexible remote work
• Paid leave proportional to hours worked, 31 days for FTE
• At least 16 hours/week, ideally 20 hours, spread over at least four days
• Flexible scheduling, especially for students
• Study space at the University of Leeds campus
• Hands-on experience in a small, dynamic team
• Company pension scheme (if applicable)

Submit your CV, cover letter, and portfolio via the 'Apply Now' button. We review applications as received and will contact successful candidates via email. Cover letters are encouraged.

Leaning Technologies ( ) is a WebAssembly company based in Leeds and Amsterdam. We enable C/C++, Java, Flash, and Linux applications to run in HTML5/WebAssembly, serving clients worldwide across various sectors. Our team values flexibility, a positive work environment, and fun. Join our Discord to chat with our developers!

We have historically employed many students from the University of Leeds, and they have enjoyed their experience with us.