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I'm Ivan Zhelyazkov, a full-stack software engineer with 6+ years building production web apps, mobile apps, and desktop software. I specialize in .NET/C# and React/TypeScript ecosystems, with a solid PHP/Symfony foundation. I’m currently founding Flow — a multi-platform hospitality & retail SaaS — architecting a .NET 10 Clean Architecture API, a Next.js 16 dashboard, a React Native mobile app, and a WPF desktop POS, with end-to-end ownership across backend, frontend, mobile, desktop, and DevOps. Concurrently, I’m contracting for a UK company, leading the frontend migration of an enterprise survey & analytics platform to a new Next.js/React web application. I’m open to full-stack roles in .NET, Symfony, or modern TypeScript stacks — remote or relocation considered.…I'm Ivan Zhelyazkov, a full-stack software engineer with 6+ years building production web apps, mobile apps, and desktop software. I specialize in .NET/C# and React/TypeScript ecosystems, with a solid PHP/Symfony foundation. I’m currently founding Flow — a multi-platform hospitality & retail SaaS — architecting a .NET 10 Clean Architecture API, a Next.js 16 dashboard, a React Native mobile app, and a WPF desktop POS, with end-to-end ownership across backend, frontend, mobile, desktop, and DevOps. Concurrently, I’m contracting for a UK company, leading the frontend migration of an enterprise survey & analytics platform to a new Next.js/React web application. I’m open to full-stack roles in .NET, Symfony, or modern TypeScript stacks — remote or relocation considered.

IVAN ZHELYAZKOV

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I'm Ivan Zhelyazkov, a full-stack software engineer with 6+ years building production web apps, mobile apps, and desktop software. I specialize in .NET/C# and React/TypeScript ecosystems, with a solid PHP/Symfony foundation. I’m currently founding Flow — a multi-platform hospitality & retail SaaS — architecting a .NET 10 Clean Architecture API, a Next.js 16 dashboard, a React Native mobile app, and a WPF desktop POS, with end-to-end ownership across backend, frontend, mobile, desktop, and DevOps. Concurrently, I’m contracting for a UK company, leading the frontend migration of an enterprise survey & analytics platform to a new Next.js/React web application. I’m open to full-stack roles in .NET, Symfony, or modern TypeScript stacks — remote or relocation considered.…I'm Ivan Zhelyazkov, a full-stack software engineer with 6+ years building production web apps, mobile apps, and desktop software. I specialize in .NET/C# and React/TypeScript ecosystems, with a solid PHP/Symfony foundation. I’m currently founding Flow — a multi-platform hospitality & retail SaaS — architecting a .NET 10 Clean Architecture API, a Next.js 16 dashboard, a React Native mobile app, and a WPF desktop POS, with end-to-end ownership across backend, frontend, mobile, desktop, and DevOps. Concurrently, I’m contracting for a UK company, leading the frontend migration of an enterprise survey & analytics platform to a new Next.js/React web application. I’m open to full-stack roles in .NET, Symfony, or modern TypeScript stacks — remote or relocation considered.

Available to hire

I’m Ivan Zhelyazkov, a full-stack software engineer with 6+ years building production web apps, mobile apps, and desktop software. I specialize in .NET/C# and React/TypeScript ecosystems, with a solid PHP/Symfony foundation. I’m currently founding Flow — a multi-platform hospitality & retail SaaS — architecting a .NET 10 Clean Architecture API, a Next.js 16 dashboard, a React Native mobile app, and a WPF desktop POS, with end-to-end ownership across backend, frontend, mobile, desktop, and DevOps.

Concurrently, I’m contracting for a UK company, leading the frontend migration of an enterprise survey & analytics platform to a new Next.js/React web application. I’m open to full-stack roles in .NET, Symfony, or modern TypeScript stacks — remote or relocation considered.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Bulgarian

Fluent

English

Advanced

Work Experience

Founder & Full-Stack Engineer at Flow Software OOD

September 1, 2025 - Present

Architecting and building a multi-platform cloud-first hospitality & retail operations SaaS from scratch. Implemented a .NET 10 Clean Architecture backend with REST APIs for orders, inventory, payments, staff management, reservations, and real-time displays; built a Next.js 16 dashboard; developed a cross-platform mobile app with React Native + Expo; created a WPF desktop POS with a JS-to-.NET bridge. Established multi-tenant data isolation, JWT auth, and granular permissions. Maintained a monorepo with npm workspaces, automated API client generation, and i18n; set up CI/CD, tests, and Playwright E2E; used Azure Key Vault and Blob Storage; PDF and Excel exports.

Full-Stack Developer (Contract) at ETS plc

June 1, 2024 - Present

Led the end-to-end migration of an enterprise survey & analytics platform from Blazor to Next.js 16 / React 19 / TypeScript. Rebuilt the frontend from scratch as the frontend lead, architecting App Router with server components, Tailwind CSS 4, Radix UI, and react-hook-form; built dashboards with Recharts; defined API contracts consumed by an auto-generated OpenAPI TypeScript client; delivered survey/project management, analytics dashboards, demographics admin, admin hub, and respondent access flows; established frontend QA with Vitest, Playwright, accessibility checks, bilingual EN/BG i18n, and Azure DevOps CI/CD.

PHP / Symfony Developer at VM & Co

November 1, 2019 - June 1, 2024

Built and maintained a centralized Symfony-based platform for 20+ client websites, delivering dynamic REST APIs, complex controllers, event listeners, and admin forms; unified admin panel for SEO/pages management and content across sites; managed local Docker/Vagrant environments to production with Caddy web server and Ansible automation; used Twig templating and Doctrine ORM for database operations.

Freelance Full-Stack Developer at Self-Employed

January 1, 2023 - January 1, 2023

Designed and built a bespoke real-estate management platform using Symfony and Doctrine, including a custom admin panel, robust security (IP-based access restrictions and RBAC), data migration, and a public property website.