Stuart MacKellar
Senior Product Manager at Vonage
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolStuart MacKellar is a Senior Product Manager based in London who turns technical complexity into commercially successful platform products. With eight years in product roles and a longer engineering background that includes CTO experience, he has scaled CPaaS messaging at Vonage to $60M+ ARR and driven 200%+ customer and revenue growth through product-led self-service. He excels across the full lifecycle from zero-to-one to enterprise scale, having launched GA for global APIs and built partner ecosystems that accelerate developer adoption. Comfortable in hands-on technical conversations, he’s shipped APIs and modernised architectures (Java, Spring, REST, MongoDB) and led cross-functional teams to deliver scalable B2B SaaS. Currently focused on AI-driven omnichannel communications, he blends a deep engineering pedigree with pragmatic product strategy to unlock new commercial opportunities. An understated strength is his track record of converting legacy systems into product platforms that broaden market reach and developer adoption.
8 years of coding experience
16 years of employment as a software developer
Bachelor of Science (BSc), Electronics, Bachelor of Science (BSc), Electronics at Durham University
Stackoverflow
11,580reputation
1.2mreached
208answers
3questions
qt
top-1%
wpf
top-5%
macros
top-5%
interop
top-5%
winapi
top-5%
audio
top-1%
Github Skills (24)
api-platform10
qt10
vonage10
audio10
winapi9
macros9
multithreading9
interop9
documentation9
wpf9
collections6
directx6
ienumerable6
ethernet6
readonly-collection6
Programming languages (3)
Github contributions (5)
smackellar/kb-app
Nov 2017 - Jan 2019
Contributions:62 pushes, 2 branches in 1 year 2 months
smackellar/api-specification
Aug 2021 - May 2022
All the OpenAPI specification files for the Nexmo APIs
Contributions:4 pushes in 8 months
apiredocopenapi-specificationspecificationapi-documentation
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