Senior engineering
end to end.
Nextio is Ward Stinissen — a senior full-stack engineer you bring in to design, build and ship software that holds up. Backend, frontend, and AI woven in where it actually earns its place.
Senior engineering, across the whole stack.
One engineer across the whole stack — backend, frontend and the AI in between — so the seams are designed, not discovered after launch.
Full-Stack Development
From database to interface — I design and build complete features and products, owning the whole path so nothing falls between front-end and back.
Backend & APIs
Typed, well-tested services and APIs — the dependable core your product, partners and internal tools are built on.
Frontend & Modern Web
Fast, accessible interfaces with real attention to detail — the layer your users actually touch, built to feel effortless.
AI Automations
Practical AI woven into real workflows — assistants, pipelines and automations that remove busywork instead of adding noise.
Technical Advisory & Audits
Architecture reviews, technical due diligence and a senior second opinion for when a decision is expensive to get wrong.
Coaching & Mentoring
Hands-on coaching for developers and teams — pairing, code review and the habits that make good engineering stick.
Boring technology, used well.
Proven tools, applied with discipline. I choose for reliability and your team's long-term comfort — not novelty.
Founder-led. Engineering all the way down.
I'm Ward Stinissen, the engineer behind Nextio — a one-person software consultancy based in Hasselt, Belgium, working with teams anywhere. I'm who you bring in when something has to be built properly: full-stack product work, a solid backend, a sharp frontend, or AI woven in where it actually helps.
Working with me means one senior engineer end to end — no account managers, no hand-offs to juniors. The person who scopes your project is the person who builds it, ships it, and is around when it matters.
You work with me, directly
The person doing the thinking is the person doing the work — no layers, no hand-offs to someone learning on your budget.
Pragmatic by default
I reach for proven tools and the simplest thing that works. New tech has to earn its place in your stack.
Own it end to end
From the data model to the last detail of the UI — accountable for the whole path to shipped, not just a slice.
Leave you stronger
Clear code, tests and real handover, so you and your team are more capable when I am done than when we started.
Tell me what you’re building.
A short note about your project is enough to start. It comes straight to me — no sales team, no funnel — and you’ll usually hear back the same day.
Email me directly