Daniel Sum
Co-founder at Sum Consulting
Brussels, Belgium
Summary
👤
Senior🎓
Top SchoolDaniel Sum is a seasoned full-stack product engineer and tech consultant with 13+ years of experience delivering SaaS, AI, and platform products and a track record of founding and scaling bootstrapped businesses to profitability and exit. As ex-CTO and co-founder of Cherry Pulp—grown 150× and acquired in 2023—he blends hands-on architecture, AI integration, and pragmatic team leadership to drive measurable business outcomes. He advises growth-stage startups, public institutions, and stealth-mode projects as CTO-as-a-Service, focusing on rapid, AI-augmented delivery that compresses months of work into weeks. Comfortable across TypeScript, Python, Go, modern frontend frameworks, and cloud-native infra, he pairs KISS and SOLID principles with operational rigor (ISO/cybersec, data architecture, DevOps). Notably, he has built four bootstrapped companies that reached break-even in year one and has delivered work for clients such as UNICEF, ING, BMW and European institutions. Based in Brussels, he prefers mission-driven mandates where technical decisions are tightly coupled to go-to-market and impact.
13 years of coding experience
2 years of employment as a software developer
Formation chef d'entreprise, Formation chef d'entreprise at EPFCMaster of Business Administration - MBA Administration et gestion des affaires général, Master of Business Administration - MBA Administration et gestion des affaires général at ENEB - Escuela de Negocios Europea de BarcelonaBeAngels Academy, BeAngels Academy at BeAngelsMaster en Sciences et Technologies de l'Information et Communication TIC Web réseaux sociaux e-learning, Master en Sciences et Technologies de l'Information et Communication TIC Web réseaux sociaux e-learning at Université libre de BruxellesUx, Ux at UX Design InstituteExecutive MBA, Executive MBA at thePowerBachelier Multimédia Multimédia, Bachelier Multimédia Multimédia at HEPL - Haute Ecole de la Province de Liège
English, French
Github Skills (116)
laravel10
enums10
dependency-free10
admin10
transparency10
forum10
nodejs10
utilities10
bootstrap10
classes10
requirejs10
webpack10
sustainability10
lodash10
react10
Programming languages (9)
Github contributions (5)
uptoolkit/upback-nestjs
Jun 2022 - Mar 2025
NestJS boilerplate to start with the UpToolkit ecosystem
Contributions:1 release, 21 PRs, 11 pushes in 2 years 8 months
nestjsboilerplatenestnodejsecosystem
blok/utils
Mar 2019 - Jun 2022
Contributions:2 releases, 12 pushes, 2 branches in 3 years 3 months
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