Full-stack developer<code/> and pixels.
I design and build websites and web apps, from database to interface.
- I can help with
- Websites, online shops, web and mobile apps, logos and branding.
- Stack
- TypeScript, Next.js, NestJS, PostgreSQL
- Based in
- Cluj-Napoca, Romania. Remote worldwide.
- Open to
- Full-time roles and freelance projects.
Lénárd-Sándor Tunya
Hi, I'm Lénárd, a full-stack web developer based in Cluj-Napoca.
I build web applications from the database up to the interface. Most of my work is in TypeScript, with Next.js and Tailwind on the front and NestJS and PostgreSQL behind it. I'm not attached to any particular stack though. If a project needs something I haven't touched before, I'll go learn it, and that's usually the part I look forward to.
I design what I build. The interfaces, the brand identity, the logos, I do those myself in Figma, Illustrator, Photoshop and Affinity. It isn't part of the developer job description, but I enjoy it, and it means I can take a project from an empty file to something that actually looks finished.
I care about the details other people skip. Loading states, error messages, how a form behaves when someone types the wrong thing. Those are the parts users actually notice, even if they never say so.
I like working with people who know things I don't. Tell me what you're trying to build and I'll ask a lot of questions, then I'll explain what I'm doing in language you can follow. No jargon walls, no disappearing for two weeks.
- Open to full-time
- Freelance-friendly
- Cluj-Napoca
Optional: an interactive terminal for the curious. Type help to start.
- Replies within 24h
- LinkedIn or email — always happy to chat
- Overlaps 6+ hours with US East Coast
- UTC+2, Romania
What I can build for you
Tell me what your business needs. I'll turn it into something that works, and explain every step in plain language.
Company website
A fast, clear site that explains what you do and makes it easy for customers to get in touch.
Start a conversationOnline shop or ordering system
Menus, stock, card payments and a back office for your staff. It runs for real in KROMA, an order-ahead coffee shop I built end to end.
See KROMAWeb app or dashboard
Custom tools for your team: task boards, internal dashboards, anything that replaces a tangle of spreadsheets. See crwsync, a team workspace I built end to end.
See crwsyncMobile app
iPhone and Android apps from one codebase. I've worked on mobile apps with React Native and Flutter in previous roles.
See my mobile experienceLogo and brand identity
A logo, colours and typography that make your business look like one business, from the website to the business card. I design the identity of my own projects, and I can do the same for yours.
Ask about branding
How we'd work together
- 01
Free intro call
20 minutes. You tell me what you need and I ask questions. No jargon, no commitment.
- 02
Written scope and fixed quote
You get a plain-language plan: what I'll build, by when, and for how much. The price is fixed before we start.
- 03
Build, with regular demos
You see working progress along the way, not just at the end, and can change direction early.
- 04
Launch and handover
I put it online, show you how to use it, and hand over everything you need, including the code.
Typical project sizes
- Small
- A one or two page website, or a logo
- Typically 1 week
- Medium
- A multi-page website, or an ordering flow
- Typically 2–4 weeks
- Larger
- A custom web or mobile app
- From 6 weeks, scoped on the call
Every project gets a fixed quote after a free 20-minute call.
First three projects: a reduced rate, in exchange for your permission to write a short case study about the result.
Common questions
How will we communicate?
By email or whatever you prefer, plus a short demo call every week or two. I reply within 24 hours on working days.
Who owns the code and the design?
You do. Once the project is paid for, the code, design files and accounts are yours.
What do you need from me?
A short description of what you want, any logo, text or photos you already have, and one person who can make decisions.
Do you work with clients outside Romania?
Yes. I'm in Cluj-Napoca (UTC+2) and work remotely worldwide, with 6+ hours of overlap with the US East Coast.
Things I've built
- crwsync — view project01
crwsync
A shared workspace where a team's task boards, chat and files live in one place and update live for everyone.
- Next.js
- NestJS
- PostgreSQL
- Redis
- BullMQ
- Socket.IO
- KROMA — view project02
KROMA
A complete coffee shop ordering system: customers order and pay from their phone, and staff run the kitchen from a live screen.
- Next.js
- Supabase
- PostgreSQL
- Stripe
- Vercel Cron
- Open to full-time roles
- Freelance projects welcome
- Remote-first, worldwide
- On-site / hybrid in Cluj-Napoca
Where I've worked and studied
Experience
Codespring
Oct. 2024 – Jan. 2025
Student Developer- Built the chat screen of an AI chatbot mobile app, working in a six-person Agile team.
- Connected the app to the backend and reduced how much data each request transfers, to cut loading delays.
- Added in-app camera capture and secure photo upload using Expo (React Native).
- Kept the code healthy with Git and regular peer code reviews.
Egnosis
July 2024 – Aug. 2024
Mobile Development Intern- Built the Login, Navigation and News screens of a mobile app in Flutter, following the Figma designs closely.
- Connected the screens to live data through GraphQL.
- Tested on real iPhones and Android phones and fixed layout bugs that only appeared on one platform.
Education
Babeș-Bolyai University
Sept. 2026 – Present
MSc Enterprise Software Design & DevelopmentBabeș-Bolyai University
Oct. 2022 – July 2026
BSc Computer Science- Thesis: crwsync, a scalable real-time collaborative platform.
- Presented the thesis research at the XXIX. ETDK, a Transylvanian student research conference.
What I work with
Frontend
- TypeScript
- Next.js
- React
- React Native
- Flutter
- Zustand
- TanStack Query
- Tailwind CSS
- Vite
Backend
- NestJS
- Node.js
- Go
- PostgreSQL
- Redis
- Prisma ORM
- Socket.io
- BullMQ
- GraphQL
- REST APIs
Infra
- Docker
- AWS (EC2, S3)
- GitHub Actions
- NGINX
- Cloudflare
- Linux
- Jest
- Playwright
Design
- Figma
- Illustrator
- Photoshop
- Affinity
Let's work together
Have a role or a project in mind? Send a note — I reply to everything.
I reply within 24 hours, usually sooner.
all three fields are required
Free, no commitment. Opens Google Calendar.
Helpful to mention
- What you want to build or fix
- Roughly when you'd like it done
- Any websites or apps whose look you like