About Source Stream

With over 25 years of experience building software, Declan has worked across the full spectrum of the industry — from major enterprises to high-growth scale-ups. He has shipped products used by millions and led engineering teams at companies where the bar for quality was non-negotiable.

Along the way, he noticed a persistent problem: startups with brilliant ideas were burning through runway with agencies that under-delivered on talent, produced throwaway prototypes, or simply could not move fast enough. The caliber of engineering talent that large enterprises took for granted was almost entirely out of reach for early-stage founders.

Source Stream was founded to fix that. At the forefront of the AI coding revolution, Declan built a consultancy where every engineer is senior, every deliverable is production-grade, and AI is embedded into every workflow to deliver 300% productivity gains — while producing human-maintainable, production-ready code. The goal is simple: give startups access to the same quality of engineering that powers the world’s best products, at a fraction of the traditional cost.