export default Sebastian Jurczak
Mobile & web apps · business software · automation
function getAboutMe() {
I'm Sebastian Jurczak – a software developer based in Kielce, Poland. I build mobile and web applications and business software – from requirements analysis, through design, to deployment and ongoing development. I work across both front-end and back-end, with a strong focus on code quality, security, accessibility, and performance.
I help companies with automation and digital transformation — finding where teams lose time on manual work, connecting systems via APIs, streamlining data and document flows, and choosing tools that genuinely take work off people's plates. If you're not sure where to start, I'm happy to look at your processes together with you.
I specialise in digital accessibility — conducting WCAG audits for websites and documents, advising on standard implementation, and supporting teams in creating content accessible to all users.
- „S. Jurczak: Od studenta do frontend developera” – CoZaDzien.pl (Radio Rekord), 2024
function buildSolutions() {
Software that solves your company's real problems.
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Mobile apps
Android and iOS apps – for your customers or as a tool for your team in the field.
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Business software
Web applications, dashboards, CRMs and systems tailored to how your company works.
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Process automation
API integrations, automated data and document flows, reports without manual copy-pasting.
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Digital transformation
Review of processes and tools, a step-by-step plan, and hands-on support during rollout.
function ensureAccessibility() {
I make sure websites and documents are accessible to all users.
- ];
const portfolio = [
Sienkiewicza25 coworking in the centre of Kielce — hot desks, serviced offices, meeting rooms, and virtual office.
Portfolio website for AvoCanDo Kreatywnie – video and visual content creator.
Landing page for Warta insurance agent Paweł Bator.
Website for the Tusowe Klimaty - Dogoterapia.
Travel agency Sroka Travel — trip offers and online bookings.
Personal fitness trainer from Roztocze — training plans and contact.
Fitness platform — workouts, diet plans, and online coaching.
Portfolio of Natalia Jurczak — graphic designer and illustrator: logos, posters, book covers, and illustrations.
import * as design from 'jurczak.pro'
export Logo & Identity
Designing logotypes, graphic marks, and full visual brand identities.
export Typography
Typeface selection and composition — readability, character, and brand consistency.
export Brand Guidelines
Complete brand books with colour palettes, typography rules, and usage guidelines.
export UI & Graphics
Interface designs, banners, marketing materials, and digital graphics.
// Interested in a visual project? → get in touch
await fetch('/contact')
Let's talk about your project
Social networks
Company details
Send me a message