DENYSKOVAL.COM · 59.91°N 10.75°E · OSLO
Denys Koval.
Full-stack developer and drone pilot in Oslo. I build calm, considered products – software that doesn't shout, made with care, not noise.
LOG 2004 · 48.46°N 35.05°E · DNIPRO
It starts in Dnipro.
Born and raised in Ukraine. First computer, first games – first code.
LOG 2019 · 48.68°N 17.37°E · SENICA
Three years in Slovakia.
School in Senica, 2019–2022. A new country, a new school system – and a fourth language.
LOG 2022 · 59.91°N 10.75°E · OSLO
Landed in Norway.
First flight in – July 2022. Home in Oslo since January 2023. Language number five. Now – IT developer apprentice at Comono AS, working on fintech and drone ground-control systems.
SYSTEMS · FULL STACK
What I fly with.
TypeScript end to end. Real-time systems, clean data models, interfaces that stay out of the way.
PRINCIPLE 1 OF 3
Consistency beats motivation.
Show up every day – especially when it isn't exciting.
PRINCIPLE 2 OF 3
Build things that matter.
Not just things that look good.
PRINCIPLE 3 OF 3
Learn in public.
Ship early. Iterate. Don't wait for perfect.
WAYPOINT 1 · BOARDLY.ONLINE
Boardly
Real-time multiplayer board games in the browser – six games live, guests welcome, no install. Next.js, Supabase Realtime, Prisma, Stripe. Built every day, no exceptions.
WAYPOINT 2 · OVERTIDSKALKULATOR.NO
Overtidskalkulator
A free Norwegian overtime-pay calculator that gets the daily and weekly rules of arbeidsmiljøloven right – where spreadsheets quietly don't.
WAYPOINT 3 · SELF-HOSTED
Personal AI agents
A Telegram assistant that runs my day from a Raspberry Pi – and a prospecting agent that reviews and patches its own code every night, then asks before anything ships. Private repos, human in the loop.
OFF DUTY · VFR
Beyond the keyboard.
FINAL · TOUCHDOWN · OSLO
Let's build something.
Open to interesting work, good problems and honest teams.
MANIFEST · SELECTED WORK
The short version.
Boardly
Real-time multiplayer board games – Next.js, Supabase Realtime, Prisma, Stripe.
boardly.onlineOvertidskalkulator
Norwegian overtime-pay calculator – Next.js, React 19, Tailwind v4.
overtidskalkulator.noPersonal AI agents
Telegram life assistant and a self-improving prospecting agent – Python, Claude, Raspberry Pi.
private reposMore on GitHub
Experiments, tools and everything in between.
github.com/KovalDenys1Day job – IT developer apprentice at Comono AS: fintech platform work and drone ground-control-station development for a defence startup.