Software engineering, actually shipped.
I’m a freelance engineer and fractional CTO. I’ve founded and led the engineering — web, backend, and React Native mobile — behind security-tech and marketplace products across the EU, the UAE, and Turkey, and I leave teams with systems they can run without me.
- role
- Fractional CTO & engineer
- focus
- Security-tech · marketplaces
- stack
- TypeScript · Node · React · Postgres
- engagement
- Founder · fractional · advisory
- timezone
- CET / UTC+1 · remote-first
From architecture to mobile — the ways I help teams ship.
Fractional CTO & architecture
Own the technical direction, not just the code.
From zero-to-one product architecture to team and hiring decisions. I set the technical direction for early-stage companies and stay accountable for shipping it — as a founder does, not a contractor passing through.
Backend & platform engineering
Systems that stay correct under real load.
Domain modelling, APIs, real-time location and scheduling, and data pipelines built for the failure modes. TypeScript, Node, Postgres, and event-driven services — GDPR-aware and EU-hosted when it matters.
Mobile apps — React Native
One codebase, iOS and Android, shipped fast.
Cross-platform mobile apps with React Native and Expo — real-time location, offline-first data, push, and native integrations. It’s how OnDuty’s field app and BookSecurity’s marketplace both ship to both stores from a single team.
Reliability & performance
Find the bottleneck, remove it, prove it.
Profiling, query tuning, caching, and observability you can defend. I instrument first, then cut latency and cost where the data — not the guesswork — says it matters.
Delivery & DevOps
From laptop to production, repeatably.
CI/CD, infrastructure-as-code, containers, and release processes that let small teams ship daily without fear. Boring, documented, and hard to break.
Technical advisory
A second pair of senior eyes.
Architecture reviews, build-vs-buy calls, security and compliance posture, and roadmap sanity checks. Embedded part-time or by the engagement — direct, with the trade-offs on the table.
Systems built to hold up under real traffic.
A senior engineer you can hand the hard part to.
I’ve been the first engineer at seed-stage startups and the person brought in to steady systems at scale. I care about the unglamorous things — clear boundaries, honest observability, and code the next person can read.
More about me- 2018
- founding companies since
- 3
- startups co-founded · 1 exit
- 6
- products led across EU, UAE & TR
- CET
- Vienna & St. Gallen · remote-first
Notes from the work.
I also recruit senior tech talent — globally.
Beyond building, I run searches for hard-to-find engineers and architects worldwide. Currently open:
What the people I’ve built with say.
Verbatim from colleagues, managers, and clients — at nu.Education, CLEO AG, Astrotec, PSM Austria, and Apapika. Quotes appear in the language they were given in.
All referencesOne of the most reliable and dedicated engineers I’ve ever worked with. If something breaks at 2am, Boris is the one you can call — and you know it will get fixed. No drama, no excuses, just ownership and results. A true team player who naturally mentors others and raises the quality of the whole team.
For more than three years he consistently stood out as both a highly skilled engineer and a strong technical leader. As Tech Lead, he was the person the team turned to when things needed immediate attention — composed under pressure, and fully accountable for resolving problems properly.
I’m pleased to recommend Boris for any DevOps role. He quickly developed a strong command of Kubernetes, cloud migration, and service orchestration — and applies DevOps principles and techniques effectively.
A remarkable engineer whose agility and adeptness at mastering new technologies stand out strikingly. In a high-pressure environment, his capacity to remain unflappable and maintain focus is commendable — consistently delivering solutions that are innovative and efficient.
Boris reviewed the security of our website and implemented concrete measures. He explains risks in a way you can weigh up without a technical background, and he says plainly what is necessary and what is not.
Translated from German
Boris has advised us technically for three years now, and has resolved significant vulnerabilities and security incidents. What sets him apart: he also names the things you would rather not hear — and brings a workable plan with them.
Translated from German
Boris advises us on implementing concrete, practical software solutions for the franchise industry. He is open about trade-offs and puts us in a position to make the final call ourselves.
Translated from German
Have a system that needs to hold up? Let’s talk about it.
Tell me what you’re building and where it hurts. I’ll reply within a day with an honest read on whether — and how — I can help.