Hi, I'm Diogo Sequeira
Product Engineer — shipping production-grade software
Building
software
for real products.
I help startups and teams turn ideas into production-ready mobile apps, web platforms and Web3 experiences — with clean architecture, strong UX and rapid delivery.
Shipping across fintech, automotive and retail platforms — plus Web3 and AI-enabled workflows.
About Me
I'm Diogo Sequeira, a Senior Product {engineer}
I build across mobile, web and DeFi, with a strong focus on speed, performance, scalable systems, and polished UX. I've contributed to global-scale projects across banking applications, the automotive sector and retail-oriented platforms — shipping software used in real production environments.
I also develop AI-powered features that improve workflows, automation and user experience.
My Services
Mobile apps
Production-ready mobile apps with clean UX, scalable architecture, CI/CD and full App Store & Play Store delivery.
Websites & platforms
High-performance websites and product platforms built with scalable architecture, SEO and real-world deployment.
Web3 product integrations
Smart-contracts development and integration of blockchain networks and such as Radix, Sui and Canton into real-world products, plus AI-powered automation and intelligent workflows.
Architecture & refactoring
Technical audits, large-scale refactoring and scalable architecture design to stabilise, modernise and future-proof products.
Experience spanning fintech and enterprise delivery, plus product builds in Web3 and AI-enabled workflows.
How I work
Senior-level delivery with a product mindset — built for real users and production environments.
Clear scope, no surprises
We align on goals, deliverables and trade-offs upfront — with a simple plan and milestones.
Fast execution, production-ready
I ship quickly without cutting corners: clean architecture, testing where it matters and solid integrations.
Quality & maintainability
Code that your future self (or team) can extend — refactors, performance tuning and long-term scalability in mind.
Transparent communication
Regular updates, async-friendly workflow and quick feedback loops — so you always know where things stand.
Available for fixed-scope projects and monthly retainers.
Selected Work
Some recent work shipped in production — mobile, web and Web3.
My BMW
Global automotive companion app — core engineering on production features used at scale.
RadixHub
All-in-one app for the Radix ecosystem — tokens, DeFi, NFTs and onboarding.
Aqui Há Vet
Website for a veterinary project — clean UI, fast and responsive landing.
HoliFit
Fitness landing page for a local brand — modern design and performance-focused.
Contact
Let's build something together
Tell me what you're building and what “done” looks like. I can help you ship a polished MVP or accelerate an existing product.
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