What does Kiril Urbonas do?

Kiril Urbonas is a freelance full-stack and AI engineer. I design, build, deploy, and run websites, web apps, e-commerce stores, SaaS platforms, and AI automations end to end for founders and small teams. I also build and operate my own live products — from a 400+ article engineering publication (DevOpsNess) to a real-time AppSec intelligence platform (ZeroDayAttack) and a native iOS app (MyHomeStock) — so clients can see the standard before they hire.

What technologies and stack does Kiril Urbonas use?

My core stack is Next.js, React, and TypeScript on the front end; Node.js, PostgreSQL, and Prisma on the back end; and OpenAI and Claude APIs, RAG, and AI agents for automation. I deploy on Vercel and AWS with Docker and CI/CD. I build on modern frameworks rather than WordPress page builders, which is why the sites I ship typically load in under 1.5 seconds and score 90+ on Lighthouse.

Which service or package is right for my project?

A quick guide: choose a Landing Page (from €500) for one focused page to capture leads or validate an idea; a Business Website (from €1,500) for a multi-page site that builds credibility and ranks in search; an E-Commerce or Web App build (from €3,000) if you sell online or need custom functionality, dashboards, and integrations; and an AI / SaaS Platform (from €5,000) for products with accounts, billing, multi-tenant infrastructure, or AI agents. If you're unsure, send the contact form and I'll recommend the smallest scope that solves your problem.

Why hire you instead of a cheaper freelancer or an agency?

Cheaper freelancers often disappear after handoff or ship a generic template; agencies layer on account managers and developers, so costs climb, communication slows, and you rarely speak to whoever is actually building your product. I do the strategy, design, development, and deployment myself - one point of contact, full accountability, no handoff gaps. You can judge the standard from the products I build and run end to end - DevOpsNess, MyHomeStock, QRify and more, all live.

What is your process for new projects?

Step 1: You fill in the contact form or we jump on a 15-minute call. Step 2: I send a custom proposal with scope, timeline, and fixed price within 48 hours. Step 3: Before writing a line of production code, you get a full design mockup to review and approve. Step 4: I build, you get weekly progress updates, and we launch. Post-launch, I'm available for a support window to fix anything that comes up.

What is your typical pricing range?

Every quote is fixed-price with no surprises. As a guide: landing pages and lead capture sites start around €500–€1,500; e-commerce rebuilds and custom web apps range from €2,000–€8,000+; AI integrations and SaaS platforms are quoted per project scope. The contact form takes 2 minutes - I'll send a custom proposal with a precise number, no obligation.

How long does a typical project take?

Landing pages: 1–2 weeks. E-commerce stores and marketing sites: 3–6 weeks. Custom web apps and SaaS platforms: 6–12 weeks. AI integrations: 3–6 weeks depending on complexity. I'll give you a specific delivery date in the proposal - not a range. If something comes up that affects the timeline, you hear about it before it's a problem.

How quickly can you start?

Usually within 1–2 weeks of proposal sign-off. I keep my project load intentionally small so I can give each client real focus - I'm not running 10 projects at once. If you have a hard deadline, mention it in the contact form and I'll tell you upfront whether it's achievable.

What if I'm not happy with the result?

That's unlikely by design. Every project starts with a full mockup - design, layout, and copy - that you review and approve before any production code is written. You request changes, I refine it, and the build only begins once you sign off. The proposal also defines clear revision rounds, so expectations are set from day one.

Do you work with clients outside your time zone?

Yes - the majority of my clients are in Western Europe and the US. I work async by default (detailed written updates, Loom videos for walkthroughs) and schedule calls to overlap with your working hours when needed. Time zones have never been a problem.

What do you need from me to get started?

An idea of what you want to achieve, your approximate timeline, and any existing brand assets or content you have. You don't need a detailed spec - that's what the discovery process is for. Fill in the form, describe the problem in plain English, and I'll take it from there.

Do you offer support after launch?

Yes. Every project includes a post-launch support window (typically 2–4 weeks) where I fix any issues at no extra cost. For ongoing support - new features, content updates, performance monitoring - monthly retainers are available. I've had clients on retainer for 2+ years.

Главная/Проекты/PDFer

Все проекты

Живой продукт

PDFer - Приватные PDF-инструменты в браузере

Бесплатный набор PDF-инструментов, который я сделал и веду - 31 инструмент: объединение, разделение, сжатие, конвертация, редактирование, подпись и защита PDF, всё прямо в браузере. Ничего не загружается, без регистрации, файлы стираются при выходе.

Ongoing - live · 2025Self-initiated · Free tool (pdfer.cc)

Объём: Соло-разработка: 31 PDF-инструмент в браузере - объединение, конвертация, подпись, защита - ничего не загружается. pdfer.cc.

Next.jsTypeScriptWebAssemblypdf-libClient-sideTailwind CSSVercel

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Результат

31 инстр.Объединение, конвертация, подпись, защита

Результат

0 байтЗагружено - всё в браузере

Результат

ПриватноБез аккаунта · стирается при выходе

Результат

GDPRС учётом ISO 27001

Живое демо

Нажимайте - это полностью интерактивно

Live at pdfer.cc

A self-initiated, free PDF toolkit I built and run - live at pdfer.cc. 31 tools to merge, split, compress, convert, edit, sign and secure PDFs, all running entirely in your browser. Nothing is uploaded, no account is needed, and files are erased on exit - GDPR and ISO-27001-minded by design.

pdfer.cc

PDFer - Private, In-Browser PDF Tools — screenshot 1

Open pdfer.cc

Open PDFer

Задача

Every "free" online PDF tool asks you to upload sensitive documents to someone else's server, gates the useful operations behind a subscription, and quietly keeps your files. For contracts, IDs and financials that is a real privacy problem. The opening was a complete PDF toolkit that does everything locally in the browser - no upload, no account, no trace.

Решение

Built as a fully client-side web app: every operation - merge, split, remove and organise pages, compress, OCR, repair, convert to and from JPG/Word/PowerPoint/Excel, rotate, page numbers, watermark, annotate, crop, fill forms, unlock, protect, sign, redact and compare - runs in the browser with zero bytes uploaded, and files are wiped from memory on exit. 31 tools grouped into Organize, Optimize, Convert, Edit and Security, with AI summarise/translate on the way. Privacy-first and standards-minded (GDPR, ISO 27001).

Клиент

Self-initiated · Free tool (pdfer.cc)

“I built PDFer because every free PDF tool wanted me to upload private documents to their server. PDFer does everything in your browser - no upload, no account, erased on exit. The same privacy-first, ship-it-properly discipline I bring to client work.”

Kiril Urbonas

Creator & Engineer, PDFer

pdfer.cc

Ключевые результаты

31 инстр.

Объединение, конвертация, подпись, защита

0 байт

Загружено - всё в браузере

Приватно

Без аккаунта · стирается при выходе

GDPR

С учётом ISO 27001

Before → After

PDF Tools Available

Before

After

Bytes Uploaded to a Server

Before

After

Сроки

Ongoing - live · 2025

Завершено в 2025

Ещё кейсы

RedAlert

Живой продукт

ZeroDayAttack — агрегатор AppSec-разведки

Живая платформа безопасности

Давайте работать вместе

Хотите таких же результатов для вашего бизнеса?

Я составлю чёткий план, сроки и реалистичные результаты для вашего проекта - без обязательств.

Начать проект Смотреть ещё работы

PDFer - Приватные PDF-инструменты в браузере

Ongoing - live · 2025Self-initiated · Free tool (pdfer.cc)

Next.jsTypeScriptWebAssemblypdf-libClient-sideTailwind CSSVercel

Ключевые результаты

31 инстр.

Объединение, конвертация, подпись, защита

0 байт

Загружено - всё в браузере

Приватно

Без аккаунта · стирается при выходе

GDPR

С учётом ISO 27001

Before → After

PDF Tools Available

Before

After

Bytes Uploaded to a Server

Before

After

Сроки

Ongoing - live · 2025

Завершено в 2025