Full-stack developer since 2005. I work directly with clients — no agency markup, no middlemen. Corporate websites, SaaS platforms, web applications.
Every project is unique. I choose the tech stack to fit your problem, not the other way around.
I build corporate websites that solve business problems, not just sit online. Product catalogs with search and filtering, client dashboards with personal data, marketplaces for connecting providers with customers.
Every solution is SEO-ready from day one: semantic markup, fast loading, proper page structure. The site is ready for promotion in search engines from launch.
I build web applications of any complexity — from internal company tools to public services with thousands of users. Data visualization dashboards, real-time systems (WebSocket, SSE), REST and GraphQL APIs, integrations with external services.
Experience with secure systems — encrypted email service, file storage, subscription and mailing systems. I understand security and performance requirements at the architecture level.
I design and build SaaS applications from scratch — from architecture to production. Multi-tenancy, subscription billing, role-based access control, admin panels. Worked with team productivity platforms, HR systems, and business management tools.
Special attention to scalability — the app should work as reliably for 10 users as for 10,000. I set up CI/CD, error monitoring, logging, and alerting.
I have extensive experience in this area — I've built booking portals for real estate, services, hotels, and travel platforms for European companies. Database of 650,000+ listings, real-time availability, high load.
I design search architecture with filters, booking systems with status management, payment gateway integrations, personalized discounts, and loyalty programs. Mobile-first — most users book from their phone.
Transparent process at every stage. You always know where the project stands.
I learn about your goals, proposed solution, and constraints. I provide a preliminary estimate of timeline and cost. Free of charge.
I define the architecture, tech stack, and data structure. I create a work plan with clear milestones. We agree before starting.
I write code and regularly show intermediate results. You can influence the process at every stage. Full access to the repository.
Deployment to production, load testing. After launch — free bug fixes for 2 weeks. Long-term support available by agreement.
Feedback from companies I've worked with — anonymized under NDA.
"We needed a booking platform handling 650,000+ listings with real-time availability. Oleg delivered a system that reduced search latency by 40% and increased completed bookings by 25% within three months."
"Our corporate site was rebuilt from scratch with proper SEO. Organic traffic grew 60% in six months after launch. The site loads under 1.5 seconds on mobile — our previous one took over 4."
"We launched our SaaS platform on schedule and under budget. Multi-tenant architecture handles 2,000+ active organizations. The admin panel reduced our support tickets by 30%."
"Oleg migrated our legacy jQuery dashboard to React in 8 weeks. Page load dropped from 6 to 1.8 seconds. The real-time data pipeline with WebSocket was a game changer for our ops team."
"Our internal tool needed to handle encrypted file storage and real-time collaboration. Oleg architected a secure system that passed our security audit on the first review cycle."
"The new corporate portal replaced three separate legacy systems. Employee self-service adoption reached 85% in the first month. Response times improved 3x compared to the old platform."
Tell me about your task — I'll provide a preliminary timeline and cost estimate. Free of charge.