11/11/2026 updated
100 % available
Senior Software Engineer — React, TypeScript & E-commerce Platforms
Baciu, Romania
Worldwide
BSc Telecommunications Systems, Technical University of Cluj-Napoca (2010-2015)About me
Senior frontend engineer from Cluj-Napoca with 10+ years building e-commerce products in React, Next.js and TypeScript. I focus on clean, accessible UI, conversion gains proven through A/B testing, and reliable delivery end to end, increasingly with Go on the backend.
Next.jsTypeScriptReact.jsGraphQL
React & TypeScript Development
Expertise in building scalable, customer-facing web applications using React, Next.js, and TypeScript, with deep experience in product listings, real-time auctions, search, cart, and checkout journeys across complex e-commerce environments.
GraphQL & API Integration
Extensive hands-on experience with Apollo GraphQL, GraphQL, and REST APIs for integrating frontend applications with backend services, including click/impression tracking and real-time data polling.
A/B Testing & Experimentation
Proven track record of contributing to A/B tests across 10+ features over 3 years, with roughly 40% driving a positive conversion lift and informing iterative product decisions.
Backend Development with Go & Docker
Growing backend contributions using Go services run in Docker containers, including work on internal product catalogue migrations from Salsify to OpenSearch.
UI Quality & Design Systems
Proficiency with Chakra UI, Sass/SCSS, Less, Flexbox, Storybook, Jest, React Testing Library, and Accessibility standards to deliver high-quality, accessible user interfaces.
DevOps & Cloud Tools
Familiarity with Docker, GitHub Actions, and CI/CD pipelines to support continuous integration and deployment workflows.
JavaScript & Frontend Frameworks
Broad knowledge of JavaScript (ES6+), Redux, Ember.js, and Angular, applied across multiple client projects in healthcare, agriculture, and e-commerce domains.
React Native & Mobile Development
Experience building cross-platform iOS and Android applications from a single codebase using React Native (Expo) and TypeScript, including budget planning and expense tracking features.
Testing & Code Quality
Writing Jest unit tests for reusable components to prevent regressions, conducting code reviews, and maintaining high standards of code quality across projects.
Tools & Collaboration Platforms
Proficient with Git, Jira, Bitbucket, Jenkins, Datadog, Cursor, and Claude Code for version control, project management, monitoring, and development productivity.
Expertise in building scalable, customer-facing web applications using React, Next.js, and TypeScript, with deep experience in product listings, real-time auctions, search, cart, and checkout journeys across complex e-commerce environments.
GraphQL & API Integration
Extensive hands-on experience with Apollo GraphQL, GraphQL, and REST APIs for integrating frontend applications with backend services, including click/impression tracking and real-time data polling.
A/B Testing & Experimentation
Proven track record of contributing to A/B tests across 10+ features over 3 years, with roughly 40% driving a positive conversion lift and informing iterative product decisions.
Backend Development with Go & Docker
Growing backend contributions using Go services run in Docker containers, including work on internal product catalogue migrations from Salsify to OpenSearch.
UI Quality & Design Systems
Proficiency with Chakra UI, Sass/SCSS, Less, Flexbox, Storybook, Jest, React Testing Library, and Accessibility standards to deliver high-quality, accessible user interfaces.
DevOps & Cloud Tools
Familiarity with Docker, GitHub Actions, and CI/CD pipelines to support continuous integration and deployment workflows.
JavaScript & Frontend Frameworks
Broad knowledge of JavaScript (ES6+), Redux, Ember.js, and Angular, applied across multiple client projects in healthcare, agriculture, and e-commerce domains.
React Native & Mobile Development
Experience building cross-platform iOS and Android applications from a single codebase using React Native (Expo) and TypeScript, including budget planning and expense tracking features.
Testing & Code Quality
Writing Jest unit tests for reusable components to prevent regressions, conducting code reviews, and maintaining high standards of code quality across projects.
Tools & Collaboration Platforms
Proficient with Git, Jira, Bitbucket, Jenkins, Datadog, Cursor, and Claude Code for version control, project management, monitoring, and development productivity.
Experience
Professional experience10+ years
Freelancer since2026
Languages
EnglishFluentRomanianNative speaker
Project history
Frontend engineer on an e-commerce resale and auction marketplace for sneakers, streetwear, and collectibles. Owned features across homepage, product, search, listing, and checkout journeys, with growing backend contributions in Go. Responsibilities included sponsored-product ad placements, A/B testing across 10+ features, real-time auctions with live data polling, seller listing flow, express shipping, search suggestions, Apple Pay checkout integration, Jest unit tests, and Go services in Docker for a Salsify-to-OpenSearch migration. Technologies: React, Next.js, TypeScript, GraphQL, Apollo GraphQL, Jest, A/B testing, Go, Docker, OpenSearch.
Frontend development across client projects in healthcare, agriculture, and e-commerce, growing from junior to mid-level. Projects included an e-commerce platform for beauty brands (React, TypeScript, JavaScript, REST APIs, Jest, Accessibility), an agricultural data platform (Ember.js, JavaScript, REST APIs, Jest), and a clinical laboratory dashboard (Angular, Angular Material, TypeScript, JavaScript, Bootstrap).
Four-week pre-employment training in HTML, CSS, and JavaScript fundamentals, ending with a final project to build an audio player in vanilla JavaScript. Location: Cluj-Napoca.
Certificates
Advanced Technology Skills for SMEs Programme
Ascendia — Digital4All (ADR), EU-funded via PNRR2026
Cambridge English: Advanced (CAE)
Cambridge Assessment English2009