01
Turn your idea into a real product
Have an idea, but no product yet? I can help you plan, design and build a clear website, web app or mobile-first product ready to launch.
Hello, I'm
Oleksii Burdeniuk
Next.js / React / React Native / TypeScript Developer
I help businesses launch websites and mobile products that look credible, load fast and turn visitors into customers.
SEOPageSpeedSaaSPWAMobile
How I can help you
I build websites, apps and simple digital tools that help your business look professional, work faster and get found online.
- 1Launch a new website or app
- 2Improve speed and user experience
- 3Get better Google visibility
- 4Reduce manual work
02
Make your current website better
If your website feels slow, outdated or confusing, I can improve the structure, design, speed and user experience.
03
Help more people find you
I can prepare your website for Google with clean structure, SEO basics, sitemap, metadata and performance improvements.
04
Save time with simple tools
If you repeat the same tasks every day, I can build a small tool, dashboard or automation that makes the work faster and easier.
About me
I’m a product-focused developer with around 5 years of hands-on experience building mobile apps, websites, SaaS platforms, PWAs and practical digital tools for real business needs.
I work best on projects where clarity, performance and straightforward user journeys matter as much as the code.
Since August 2024, I’ve been working independently on multilingual websites, SaaS products, PWAs and automation tools for real businesses.
Around 5 years building web and mobile products
Kraków, Poland
Open to product-focused roles and projects
What I build
01
Next.js websites and SaaS platforms
Production-ready websites, SaaS interfaces and business platforms built with Next.js, React and TypeScript.
02
SEO and indexing optimization
Technical SEO, metadata, sitemap, robots.txt, canonical URLs, hreflang, structured data and clean indexing setup.
03
PageSpeed and Core Web Vitals
Image optimization, Lighthouse improvements, LCP/FCP/CLS checks and performance-focused frontend architecture.
04
Mobile-first PWAs
Fast mobile-first PWAs with offline-friendly UX, local persistence and app-like workflows.
05
React Native mobile apps
Cross-platform mobile applications, responsive UI, app release preparation and production mobile experience.
06
AI and automation features
AI-assisted workflows, OCR, structured data extraction and practical automation for real business problems.
Experience
View all experienceAugust 2024 - Present
Product Developer
Self-Employed/Kraków, Poland
Designing and developing SaaS products, multilingual platforms, PWAs and AI-assisted tools focused on real-world business workflows, UX, performance and scalable architecture.
Next.jsReactReact NativeTypeScriptPrismaPostgreSQL
January 2024 - August 2024
React Native Developer
Hioosh/Paris, France / Remote
Main frontend developer for a production dating application available on app stores, focused on mobile features, UX flows, frontend stability and release preparation.
React NativeTypeScriptJavaScriptReduxREST APIsGit
June 2021 - January 2024
Frontend / React Native Developer
GabSoft/Chernivtsi, Ukraine
Developed frontend parts of React Native mobile applications with focus on responsive UI, cross-platform compatibility and maintainability.
React NativeReactJavaScriptTypeScriptReduxHTML
Recent Projects
View all projects
FoodTech SaaS
GastroMap
Helps restaurants manage menus faster and present them clearly in multiple languages.
A multilingual product for creating, managing and publishing digital menus for restaurants, cafes and food businesses.
Next.jsSaaSi18nRBACAI workflows
View case study
Business website / SEO
Vonco Partners
Makes the business look credible online and easier to find.
A multilingual website with SEO, structured data and a customer assistant.
Next.jsSEOmetadataschema.orgmultilingual
View case study
Work hours tracker
WShift
Helps workers record shifts, check regular and overtime hours, and prepare monthly reports without spreadsheets.
A local-first time tracker for web, iPhone, and Android with monthly totals and PDF, XLSX, and XML exports. The Android version is currently in testing.
WebiOSAndroidlocal-firstPDF/XLSX/XML
View case study
Barcode and QR tools
WareCode
Turns readable values from damaged labels or scanner screens into clean barcodes without manually copying long codes.
A warehouse-tested web, iPhone, and Android app with CODE128 and QR generation, camera scanning, on-device OCR, saved codes, and custom recognition patterns. Android is currently in closed testing.
WebiOSAndroidBarcodeOn-device OCR
View case studySkills
A practical mix of frontend, SEO, mobile and product skills I use to ship real work.
01
Core Frontend & Web
Next.jsReactTypeScriptJavaScriptTailwind CSSResponsive UIMobile-first UIComponent architecture
02
SEO, Performance & Indexing
Technical SEODynamic metadataSitemapRobots.txtCanonical URLshreflangSchema.org / JSON-LDCore Web VitalsLighthousePageSpeed optimizationImage optimizationVercel deployment
03
Mobile & PWA
React NativePWAOffline-first UXService WorkerApp Store / Google Play release workflowsMobile UXPush-ready architecture
04
Product & Architecture
SaaS developmentUX flow designFrontend architectureFeature planningi18n/localizationSubscription/paywall logicRole-based access controlPerformance-focused architecture
05
AI & Automation
AI-assisted workflowsOCR workflowsGoogle Vision OCRGoogle Generative AIAI API integrationsStructured data extraction
06
Backend & Data Support
API routesServer ActionsPrismaPostgreSQLMongoDBREST APIsAuthentication basics
Download my CV
Download my CV
A quick look at my experience, selected projects and the kind of products I deliver.
Download CVLet's work together
Tell me what you’re building, and I’ll help you map the next step.
Contact Me