About me
Full-time developer, part-time student, always curious.
I'm an ambitious software engineer and computer scientist who is always eager to learn and innovate. Right now I'm a Technology Developer Degree Apprentice at Barclays UK, working as a backend developer on an integration team in Group Technology Infrastructure Services. Java, Spring Boot, Apache Kafka and Ansible are my daily tools.
Alongside the day job I'm studying Digital & Technology Solutions (Software Engineering) at Manchester Metropolitan University, and running Mayer Digital, where I design and build websites that give small businesses and creatives a strong digital footprint.
Before Barclays I managed e-commerce and web development projects in the jewellery industry, working across Magento, Azure and WordPress. I've also built full-stack sites and AI tools such as Sentire, a real-time sentiment engine for r/WallStreetBets.
These days I'm most excited by the places where security, AI and quantum computing meet. I'm on the way to publishing my first paper on hybrid PQC–QKD security algorithms, and I write about quantum, security, AI, entrepreneurship and philosophy on Substack.
Stefan Mayer
United Kingdom
Technology Developer Degree Apprentice at Barclays
Interested in
Experience & education
The journey
- First paper in progress · 2026Research
Hybrid PQC–QKD security algorithms
Independent research
Researching hybrid schemes that combine post-quantum cryptography with quantum key distribution, so that communication stays secure even if one of the two layers is broken.
Post-quantum cryptographyQKDSecurity - 2024 – PresentDegree apprenticeship

Technology Developer Degree Apprentice (BA2)
Barclays UK
Backend developer on an integration team within Group Technology Infrastructure Services.
- Building and supporting backend integration services with Java and Spring Boot
- Working with event streaming on Apache Kafka and automation with Ansible
- Rotating through projects and learning opportunities across the bank, including Microsoft Azure
JavaSpring BootApache KafkaAnsibleMicrosoft Azure - 2024 – PresentFreelance

Founder & Web Developer
Mayer Digital
A small web studio helping businesses and creatives build a robust digital footprint, from concept and design through launch and beyond.
- Designed and built a portfolio site for pianist Luca Ambrosino with YouTube and Bandcamp embeds
- Tailored websites that reflect each client's brand, with hands-on support from concept to launch
HTMLCSSJavaScriptBootstrapTailwind CSSWordPress - 2024 – PresentEducation

Digital & Technology Solutions (Software Engineering), BSc degree apprenticeship
Manchester Metropolitan University
Studying for my degree alongside full-time work at Barclays, with a focus on software engineering.
Business SystemsDigital Technology in Organisations and SocietyEnterprise ProgrammingFull Stack Web DevelopmentNetworking & SecurityProject ManagementSoftware DesignSoftware Testing and Quality Assurance - Until 2024Employment
E-commerce & Web Projects
Jewellery industry
Managed e-commerce and web development projects, working across Magento, Azure and WordPress.
MagentoMicrosoft AzureWordPress
Manchester Metropolitan University
What I'm studying
Digital & Technology Solutions (Software Engineering), BSc degree apprenticeship
Business Systems
Digital Technology in Organisations and Society
Enterprise Programming
Full Stack Web Development
Networking & Security
Project Management
Software Design
Software Testing and Quality Assurance
Certifications
Always learning
Artificial Intelligence FundamentalsIBM SkillsBuild · 2024
Project Management FundamentalsIBM SkillsBuild · IPMA · 2024
Cybersecurity EssentialsCisco Networking Academy · 2024
The Web Developer Bootcamp 2023Udemy · Colt Steele · 74 hours · May 2023Verify