Kristóf Kovács-Egri
CEO & Senior Software Engineer
Full-stack product engineering: React, Next.js, Node.js
About QuartzDevs
QuartzDevs is a software development company that provides dedicated teams of senior software engineers from Hungary and Romania. It integrates full-stack engineers into existing product and engineering teams, with a first commit typically within 1–2 weeks, and serves clients worldwide including Volvo, Save the Children and GoStudent.
How we're built
A senior-only model designed so clients get consistent ownership and quality, not a rotating pool of anonymous resources.
Two-country, senior-only
Senior and medior engineers only, no offshore delivery
Based in Hungary & Romania
Hungary & Romania based. EU time zones with strong overlap for European and US teams.
A stable core, ready to scale
~10-person core engineering team, with +10-15 senior engineers we can add quickly from a long-term, pre-vetted senior contractor network.
Client-facing engineers
Strong English, client-facing product engineers
What we hold ourselves to
The standards that make senior engineers safe to embed in your team and ready for enterprise due diligence.
Senior-only delivery
Every engineer is senior or medior. No juniors billed at senior rates, no offshore hand-offs.
Client-facing communication
Engineers who join your standups, write clearly, and can be trusted in front of your stakeholders.
Clear project ownership
A named point of contact who owns delivery, not a rotating pool of anonymous resources.
Transparent timelines
Honest estimates, visible progress, and early warning when something is at risk.
Structured QA
Testing built into the workflow, not bolted on at the end.
GitHub-based workflow
Pull requests, code reviews and documentation in your repositories and tooling.
Documentation & handover
We leave systems maintainable, documented and easy to hand back or extend.
GDPR-conscious EU delivery
EU-based teams, ready for due diligence and compliance review.
Add a Dedicated Senior Engineering Team to Your Business
Book a free 30-minute consultation to discuss your engineering needs. We'll help you find the right dedicated team or team extension for the long term.
First commit in 1-2 weeks
Time-to-first-commit for a dedicated senior engineer, not a months-long ramp-up
Engineers who stay
Long-term partnerships and clear ownership, not a revolving door
Proven track record
Trusted by engineering teams at Volvo, Save the Children, GoStudent & more
Kristóf Kovács-Egri 
CEO & Senior Software Engineer
Senior software engineer building products for global companies