Software builtto outlast the peoplewho build it.
Athelvoid is a senior engineering studio. We build web applications, APIs and developer tooling — and hand you every line of code when we're done.
No lock-in
Full source code, documentation and deployment access at handover. You own everything we build.
Working software, weekly
You see real progress every week — not a big reveal after months of silence.
A reply within a day
Every message gets an honest answer within 24 hours, including when we're not the right fit.
Selected work
What we build
One senior team for the whole stack — from the database to the deploy button.
Full-stack web apps built with Next.js, React and Node — production-ready from day one, fast for your users and easy for the next engineer to pick up.
- React / Next.js
- REST & GraphQL APIs
- Authentication
- Performance optimisation
Clean, documented APIs your team will actually enjoy using. We design them, build them and connect them to the services you already rely on.
- API architecture
- Third-party integrations
- Webhook systems
- API documentation
Internal tools, CLIs and developer infrastructure that multiply what your team can ship in a week.
- Internal dashboards
- CLI tools
- CI/CD pipelines
- Developer portals
Scalable, cost-aware cloud architecture on AWS, GCP or Vercel — so you can deploy on a Friday without holding your breath.
- Cloud architecture
- Docker & Kubernetes
- Monitoring & alerts
- Cost optimisation
Architecture reviews, stack decisions and engineering leadership for teams at a crossroads.
- Architecture reviews
- Tech stack selection
- Code quality audits
- Team upskilling
From idea to a live product in weeks. We scope tightly, build what matters first and help you launch.
- Rapid prototyping
- User auth & onboarding
- Analytics integration
- Launch support
How a project runs
Four steps, no surprises. You always know what's happening, what it costs and what comes next.
- 01
Discovery
We understand the problem before we touch code. Two working sessions, structured questions, clear requirements.
- 02
Proposal
A written scope, timeline and fixed price. You know what you're getting and what it costs before anything starts.
- 03
Build
Iterative delivery. You see working software every week, not a big reveal at the end.
- 04
Handover
Full source code, documentation and deployment. You own everything, with no lock-in.
From the blog
Why we chose Next.js for (almost) everything
After building over 30 client projects, we've settled on Next.js as our default stack. Here's the honest reasoning.
How we scope software projects (and why most estimates are wrong)
Software estimation is famously broken. Here's the process we use to give clients estimates they can actually plan around.
Tailwind CSS v4: a practical guide for teams migrating from v3
v4 changes more than the syntax — it changes the mental model. Here's what actually matters for teams upgrading.