Available for work

I build digital products that feel alive.

Computer Science student at the University of Crete and founder of EduPay, building production-ready SaaS platforms and full-stack web applications with Firebase, JavaScript, Node.js, and SQL.

30+ Projects delivered
3 First-place awards
4+ Years building
18 Client websites

Selected work

Software I build end to end.

A SaaS platform in production, a full-stack study platform, and client websites across Cyprus and Greece.

EduPay platform
SaaS productFirebaseJavaScript1st place · UoC Startup Pitch

EduPay

Founded and built end to end. A SaaS platform that helps tutoring centres track student payments, payment statuses, and parent communication in real time.

Founder & full-stack developer · In production with 31 tutoring centres managing 569 students.

Tziraf Coffee website
Brand identityAnimationMobile-first

Tziraf Coffee

A bright, playful digital home for a coffee spot with character. The giraffe-inspired identity comes through in bold yellow tones, friendly visuals, and smooth animation, without losing the local café charm.

Visit tziraf-coffee.web.app
Veranda Kafeneio website
Brand identityBilingualCinematic motion

Veranda Kafeneio

A warm, character-driven home for a kafeneio in old Paphos. Vintage café details, earthy tones, and the brand's Mona Lisa mascot in a playful bilingual experience.

Stephanie Villa, Rent Paphos Villas
GalleryAvailabilityHospitality

Stephanie Villa

A premium villa showcase with gallery, availability calendar, and direct enquiry flows. Built to turn lookers into guests.

Visit rentpaphosvillas.com
Amerikanos Diner website
Cinematic UIPhotography-ledMenu-first

Amerikanos Diner

A cinematic showcase for an American-classics diner in Heraklion. Expressive typography and appetite-forward photography, built menu-first around smash burgers, deep-dish pizza, and craft coffee.

Visit amerikanos-diner.web.app
StreatLab smash burgers website
Interactive menuSEOMobile-first

StreatLab

Mobile-first website for a smash burger brand in Paphos, with a full interactive menu, location map, and SEO-ready structure. The owner's review lives further down this page.

Experience

Milestones so far.

Jul 2026 - Dec 2026 New Entrepreneur, Software & Digital Projects Air Balloon Digital Studio · Erasmus for Young Entrepreneurs

6-month entrepreneurial placement · Paphos, Cyprus. Currently working at Air Balloon Digital Studio as part of the EU-funded Erasmus for Young Entrepreneurs programme. I contribute to real client and internal digital projects, with hands-on exposure to software development, digital product delivery, client work, and business operations.

Alongside the studio work, I am developing EduPay as my entrepreneurial project, using the programme to strengthen its product strategy, sales processes, market validation, customer acquisition, and overall business growth.

Erasmus for Young EntrepreneursEU programme6-month placementDigital product deliveryClient projectsEduPay
Jan 2026 - Present Founder & Full-Stack Developer EduPay

Founded EduPay, a web-based SaaS platform helping tutoring centres manage student payments, payment statuses, and parent communication. Built the platform end to end on Firebase, designed the UI/UX, and led branding, marketing, and customer discovery. It now serves 31 tutoring centres managing 569 students, and took 1st place at the University of Crete Startup Idea Pitch.

FounderSaaSFirebaseProduct executionUI/UXCustomer discovery
Sep 2025 - Present Teaching Assistant, Java Programming University of Crete

Support undergraduate Java Programming through lab assistance, code reviews, debugging guidance, and explanation of object-oriented programming and software design concepts.

JavaOOPTeachingCode reviewMentorshipDebugging
Sep 2025 - Present Website Developer & Marketing Member Minautor Racing Team, University of Crete Formula Student

Built and optimized the team website with mobile-first responsive design, SEO improvements, Open Graph metadata, sitemap, and partner marketing support. Collaborated with the marketing and social media team on visual content, partner promotions, and digital strategy.

HTMLCSSTailwind CSSJavaScriptFirebase Hosting
Apr 2026 Course Certificate, GenAI Fundamentals 100mentors

Completed foundational training in generative AI principles, responsible AI use, and workflow-based applications.

Mar 2026 Participant, Foundit Explore Entrepreneurship Bizrupt

Participated in hands-on workshops focused on idea validation, startup operations, collaborative problem solving, and entrepreneurial execution.

Feb 2026 Volunteer, Get Hired Live Bizrupt

Supported event operations and gained insight into recruitment workflows through live interview sessions, networking with companies, and exposure to tech and business recruitment processes.

RecruitmentEvent operationsNetworkingCareer development
Nov 2025 Volunteer, Robotics Mentor Robotex Cyprus

Supported logistics and workshops at Cyprus' largest robotics competition. Mentored students in Arduino programming, hardware troubleshooting, and robotics problem solving.

2022 - 2023 Tank Gunner, Armored Division Cyprus National Guard

Completed 14 months of military service in the Armored Division as a tank gunner (Πυροβολητής). Ranked first in Combat Training (Μαχητές) and Tank School (ΕΚΕ). Developed precision, decision-making under pressure, leadership, team coordination, and technical problem-solving in high-stakes environments.

LeadershipPrecisionTeam coordinationHigh-pressure performanceTechnical systems

I turn ideas into working products, not prototypes.

I am a full-stack developer and Computer Science student at the University of Crete, based in Paphos, Cyprus, with strong ties to Greece. My work combines engineering, design, product thinking, and entrepreneurship.

I founded EduPay, built PicMeUp and PanExams Hub, and ship client websites across Cyprus and Greece. I work with Firebase, JavaScript, Node.js, Express, SQL, PHP, WordPress, and modern frontend technologies, and I serve as a Java Teaching Assistant at my university. What drives me is simple: building things that solve real problems for real people.

Technical range.

The stack behind 30+ delivered projects, from SaaS platforms to systems-level work in C.

Frontend

HTMLCSSJavaScriptResponsive designUI/UXFigmaTailwind CSS

Backend

Node.jsExpressPHPSQLREST APIs

Cloud & platforms

FirebaseFirestoreFirebase AuthFirebase HostingFirebase StorageCloud MessagingWordPressElementor

Programming

CC++JavaPythonArduino

Beyond code

SEOOpen Graph metadataGit / GitHubProduct planningClient communicationDebuggingTeam leadershipPublic speakingMentoring

Awards & education.

1st

Startup Idea Pitch 2026

Business Idea Pitch, University of Crete, EduPay

1st

INNOVA Challenge 2022

National innovation competition, Smart Irrigation System

1st

Unique Inspire 2022

National innovation competition, Smart Traffic Control System

2nd

Robotex Cyprus

Arduino line following robotics competition

BSc in Computer Science

University of Crete

Sep 2023 – Expected Jun 2027  ·  GPA 8.16/10  ·  210 ECTS completed

Bachelor’s thesis — 10/10, 18 ECTS. Front-end development of a digital application for the prevention of occupational injuries among orthopaedic surgeons.

References

Recommendation letters.

Signed letters from professors and researchers at the University of Crete and FORTH.

Prof. Yannis Tzitzikas

Professor of Information Systems, University of Crete & FORTH-ICS

Java ProgrammingInformation SystemsFORTH-ICS

Dr. Michalis Mountantonakis

Laboratory Teaching Staff, University of Crete & Postdoctoral Researcher, FORTH

Web DevelopmentComputer ScienceFORTH

Prof. Noni Rizopoulou

EAP/ESP Instructor & Course Developer, University of Crete

Academic EnglishTechnical WritingEAP/ESP

Prof. Haridimos Kondylakis

Associate Professor, University of Crete & Affiliated Researcher, FORTH-ICS

Computer ScienceResearchFORTH-ICS

Kind words from clients.

“Working with Constantinos on the PSquare project was a pleasure. His technical expertise and attention to detail brought our vision to life. The website is visually stunning, highly functional, and he delivered beyond what we expected.”

Paschalis Charalambous Company Owner · P Square Services

“Constantinos and Nikoletta created an outstanding website for StreatLab that perfectly captures our brand. A modern design approach with solid implementation made it fast, responsive, and engaging. Professional throughout, deadlines met. Highly recommended.”

Dimitris Panagiotou Owner · StreatLab

“Before EduPay I tracked payments on spreadsheets and spent every weekend working out who still owed us. Now every student’s payment status is on one screen and parents get notified automatically. It’s given me back several hours a week I used to lose to admin.”

Christos Papastylianou Tutoring centre owner · EduPay platform

“Constantinos delivered our website far faster than we expected, and the result speaks for itself. He captured the character of the garden and our family’s story in both Greek and English, without us having to explain things twice.”

Stella Paloungou Owner · Avli tis Nefelis

“Most of our customers look us up on their phone before they come. The menu loads instantly and reads properly on a small screen, which is really all we needed.”

Giannis Stathakis Owner · Homy Cafe

Contact

Let's build something real.

A website, web app, SaaS platform, dashboard, or digital product: I can help turn the idea into a polished working product.

Open for opportunities Replies within 24 hours