Matthew Callahan-page
Senior Software Engineer - Digital at Capgemini
Shrewsbury, England, United Kingdom
Summary
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Senior🎓
Top SchoolMatthew Callahan-page is a Senior Software Engineer and Technical Lead with 10 years' experience delivering large-scale government digital services at Capgemini, currently helping HMRC build public-facing APIs and scalable Scala/Play microservices. He blends backend expertise—from legacy mainframe and Oracle systems to modern Scala and DevOps practices—with hands-on leadership of cross-functional scrum teams and mentoring of junior engineers. His work follows GDS principles and user-centred design, contributing to HMRC’s open-source efforts on GitHub and driving continual improvement in tooling and delivery. Notably, he has migrated and evolved critical tax systems originally written in COBOL and Oracle into modern microservice architectures while maintaining operational reliability. Based in Shrewsbury, he holds a first-class BSc in Computer Science and consistently combines pragmatic engineering with a focus on measurable user outcomes.
10 years of coding experience
6 years of employment as a software developer
Advanced Diploma, IT Professional & IT Practitioner (Software Development), Advanced Diploma, IT Professional & IT Practitioner (Software Development) at Telford College of Arts & TechnologyBSc (Hons), Computer Science, First-class, BSc (Hons), Computer Science, First-class at The University of WolverhamptonA Level, Computer Science / Mathematics (Mechanics) / Physics (Astrophysics), A / A / B, A Level, Computer Science / Mathematics (Mechanics) / Physics (Astrophysics), A / A / B at Shrewsbury Sixth Form College
Github Skills (5)
jenkins10
intellij2
cucumber2
scala1
dsl1
Programming languages (6)
Github contributions (5)
hmrc/emcs-tfe-change-destination-frontend
Aug 2023 - Nov 2024
Contributions:66 reviews, 68 PRs, 110 pushes in 1 year 2 months
hmrc/emcs-tfe
Jan 2023 - Nov 2024
Contributions:82 reviews, 93 PRs, 146 pushes in 1 year 9 months
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