Available for work · Q3 2026

Designing & engineering thoughtful web products from Volos.

Hi, I'm Konstantinos. A senior frontend engineer with 7+ years shipping scalable web apps. I care about product, systems, and the small details that make software feel calm. Currently building Scenarity.

Konstantinos Themelis
KONSTANTINOS · VOLOS · GR · 2026
Frontend engineering Product design System architecture Nuxt & Vue Rapid prototyping SaaS & billing Frontend engineering Product design System architecture Nuxt & Vue Rapid prototyping SaaS & billing
01Now

What I'm currently spending my days on.

Building

Scenarity

A SaaS platform for cost scenario analysis — dynamic pricing logic, real-time calculations, end-to-end architecture.

Leading

Frontend at Nitlab

Leading development of scalable web applications in Nuxt. Shipping features, shaping conventions, mentoring the team.

Operating

Starlight Adventures

Running an outdoor experience business on the side — marketing, client acquisition, logistics. Product work, offline.

Exploring

Design & motion

Pushing into product design, interaction design, and prototyping — the craft side of building software.

02About

I build calm, fast web products — and occasionally disappear into the mountains.

I've spent the last seven years as a frontend engineer, mostly at Nitlab, where I lead the development of Nuxt-based web applications. My work sits at the intersection of product, systems, and the craft of the interface — architecture decisions one day, pixel nudges the next.

In 2025 I founded Scenarity, a SaaS platform for cost scenario analysis. I designed the whole thing — frontend, backend, billing, pricing logic — and keep shipping. A year earlier I started Starlight Adventures, a small outdoor business that pulls me out of the editor and into Greek mountains.

I have a Masters in Computer Engineering from the University of Thessaly and a background that includes .NET machine-vision work, Python data analytics, and years of web. I care about performance, accessibility, and the quiet details most people never notice.

7+Years shipping
2Businesses founded
9.11M.Sc. grade / 10
03Experience

A brief working history.

2025 — Now Founder & CTO Scenarity — SaaS for cost scenario simulation. Architecture, pricing logic, real-time calc. Remote · GR
2024 — Now Founder & Operator Starlight Adventures — outdoor experience business. Marketing, acquisition, ops. Volos · GR
2019 — Now Frontend Developer Nitlab — leading scalable web apps in Nuxt JS. Product, systems, mentoring. Volos · GR
2019 Python Engineer Centaur Analytics — part of the data analytics team. Volos · GR
2017 — 2018 .NET Software Engineer Qubber — machine-vision algorithms for industrial quality-control systems. Athens · GR
04Toolkit

What I reach for when I'm building.

Core stack
  • Nuxt JS
  • Vue JS
  • JavaScript
  • TypeScript
Frontend
  • Tailwind CSS
  • Nuxt UI
  • Interaction design
  • Prototyping
Backend / BaaS
  • Supabase
  • Strapi
  • System design
  • APIs
Tools & APIs
  • Stripe
  • Mapbox GL
  • Sentry
  • Netlify · Cloudinary
05Selected projects

A few things I've shipped.

06Get in touch

Let's build
something good.

I'm open to senior frontend roles, founding-engineer gigs, and short-term design/engineering collaborations. If it sounds like a fit, say hi.

kothemel@gmail.com