vyjadreni.net
2016 – 2026
Enterprise-grade automation for utility network statements. Includes complex billing cycles, automated bank payment pairing, and multi-channel notifications.
Open for new challenges
Ing. Václav Kovalčík
Web & Mobile Application Developer
With over 25 years of deep-tech experience, I bridge the gap between complex business logic and seamless user experiences. I specialize in scalable web systems (React, PHP) and native mobile apps (Swift) that turn code into capital.
25+
years of mastery
120+
successful launches
B2B
tech specialist
Experience
since 2002
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About Me
Coding with a business mindset
I don't just write code; I build strategic assets. From high-traffic e-commerce engines to automated data-mining bots and polished iOS apps, I focus on reliability, security, and long-term maintainability.
Whether leading a team or acting as a solo force, I refine existing architectures to ensure your tech stack is an accelerator, not a bottleneck.
Core Competencies
Turning ideas into scalable software
Modern Frontend
Building fast, reactive interfaces using React and TypeScript. SPA architecture, state management, and intuitive UX for complex dashboards.
Robust Backend & API
Architecting secure, high-availability backends in PHP (Symfony, Nette). Database optimization, microservices, and seamless third-party integrations.
iOS Development
Crafting premium native applications for iPhone and iPad using Swift/SwiftUI. Performance-driven code aligned with Apple’s HIG. ios-developer.eu
Stack
What I work with
PHP · TypeScript · React · React Native · Swift · SwiftUI · REST API · MySQL · PostgreSQL · Oracle · Mongo · Redis · RabbitMQ · Docker · GitLab CI/CD · PHPUnit · Selenium · Mockery · Codeception · JMeter · Elasticsearch · Kibana · Bash · Composer · OpenStack · Scrum · Kanban · SOLID · DRY · KISS · OOP · and more…
My work has been trusted by
Portfolio
Proven Results
konfigurator.agrio.cz
2015 – 2026
A sophisticated engineering configurator. Transformed thousands of variables into a multilingual sales tool with offline capabilities for field agents.
Borra
2019 – 2026
Industrial-scale manufacturing ERP. Streamlined order processing through automated workflows, strict CI/CD pipelines, and rigorous code quality standards.
Nerezove-zabradli-palamar.cz
2013
Processed a 180‑page PDF with tables and photos into 2,000 structured products and built a complete e‑commerce solution.
online.ulzibat.cz
2015 – 2019
A reservation system for consultations and surgeries with up to 9 user roles. Automatically assigns substitutes when slots free up. Includes Excel export.
Realne-simulatory.cz
2012 – 2015
A large reservation and invoicing system for booking experiences. Custom features for admins, clients, agencies, pilots, and flight attendants.
More references available at Ananas.cz
Pricing
Project Investment
Transparency is key. Based on your requirements, I provide a guaranteed price ceiling. No hidden costs—just clear, value-driven development tailored to your business goals.
On-demand Development (Hourly)
2.500 CZK / hr
Dedicated Support (Retainer: 20h/month)
2.250 CZK / hr
Enterprise Projects (High-intensity engagement)
od 1.800 CZK / hr
Strategic Partnership (Long-term full-time)
10.000 CZK / MD
Consultancy & Code Reviews
3.000 CZK / hr
Priority Response (Emergency support <12h)
+ 20 %
Pricing valid from 1 Jan 2026 · Prices exclude 21% VAT · New clients receive pro‑forma invoices · MD (Man‑Day) = 8 hours of work
Contact
Contact & Consultation
Let's discuss how I can help your project succeed. Expect a reply within 24 hours.
Ing. Václav Kovalčík
Address
Evropská 692/14, Prague 6 – Dejvice
Phone
+420 737 981 440
E‑mail
php@vaclav-kovalcik.cz
Company ID
71643605 · VAT payer
Service Area
EU countries
Sole Proprietor
Registered in the Trade Register since 15 May 2002
Trade License No.: 310028-2875165-00
Authority: Prague 17 Municipal Office