Callum D
Senior Software Engineer at Blackbullion
United Kingdom
Summary
👤
Senior🎓
Top SchoolCallum D is a Senior Software Engineer with nine years’ experience building and optimising backend systems, primarily in PHP and Go, across both monoliths and microservices. He has taken services from ground-up builds to legacy rewrites, delivering measurable performance gains (including 4x throughput on a Go notifier and up to 50% latency reductions on PHP services) while driving near-100% test coverage. Comfortable across the stack, he has production experience with React/Next.js and React Native and has owned sizeable AWS estates using ECS, Lambda, API Gateway and Terraform via CI/CD. He pairs a formal computer science background with hands-on DevOps work and a pragmatic focus on observability, error tracing and developer-friendly architecture. Known for mentoring peers and cross-training into platform engineering, he thrives on solving real-world problems regardless of the technology chosen.
9 years of coding experience
5 years of employment as a software developer
Postgraduate Degree, Computer Software Engineering, Merit, Postgraduate Degree, Computer Software Engineering, Merit at Swansea UniversityUndergraduate Degree, Computer Software Engineering, 2:1, Undergraduate Degree, Computer Software Engineering, 2:1 at University of South Wales
English
Github Skills (6)
backpack8
reservation-system7
php4
development-environment4
laravel4
modularity3
Programming languages (3)
Github contributions (5)
caldonovan/whiteboard
Dec 2019 - Jan 2022
Simple Laravel web app that replicates functionality of Blackboard
Contributions:11 PRs, 22 pushes, 10 branches in 2 years 1 month
laravelphpblackboard
caldonovan/Laravel-Homestead-Setup
Feb 2020 - Jun 2022
Generic and simple setup guide for getting a Laravel development environment set up.
Contributions:23 commits, 2 PRs, 21 pushes in 2 years 3 months
reservation-systemmodularitysetup-guidephpgeneric
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