Denis Lazarov

Frontend Specialist at Sourcelab

Developed the company website and projects using React (Vite/Next SSR), TypeScript, Vue, and NestJS; styled with Tailwind CSS and GSAP; led a GraphQL/NestJS database project; managed direct client interactions and project terms; provided technical direction as head programmer; expanded test coverage with Jest; testing with Playwright and Cucumber.

Full-stack Developer at SAP

Develop and maintain full-stack apps using SAPUI5, Java, and SAP tools; collaborate in Agile/Scrum; implement SAP Fiori UI components; develop backend services; troubleshoot and optimize performance, scalability, and security; refactor large codebase; assist in building an internal React app; perform unit/integration testing with Jasmine; implement CI/CD with Jenkins and GitHub Actions; use Git and Jira.

Frontend Specialist at SourceLab

Led development of the company website and multiple projects using React (Vite/Next SSR), TypeScript, Vue, and NestJS; enhanced user engagement with Tailwind CSS and GreenSock; led a dynamic GraphQL/NestJS data project; managed client interactions and project requirements; acted as head programmer for a major project; expanded test coverage with Jest; conducted Playwright and Cucumber testing.

Full-stack Developer at SAP

Develop and maintain full-stack applications using SAPUI5 and Java; collaborate in Agile/Scrum; implement SAP Fiori UI/UX; develop backend services with Java and SAP technologies; troubleshoot performance, scalability, and security; share knowledge and refactor large codebase; contributed to a React-based internal tool; perform unit/integration tests with Jasmine; implement CI/CD with Jenkins and GitHub Actions; use Git and Jira for version control and sprint planning.

Frontend Specialist at Sourcelab

Led development of the company website and multiple projects using React (with Vite or Next SSR), TypeScript, Vue, and NestJS; enhanced engagement with Tailwind CSS designs and GreenSock animations. Directed a dynamic, query-driven GraphQL/NestJS database project. Managed direct client interactions, negotiating project terms with a demanding client. Oversaw major project delivery and expansive test coverage with Jest; experience with Playwright and Cucumber.

Full-stack Developer at SAP

Develop and maintain full-stack applications using SAPUI5, Java, and SAP tools to enhance enterprise solutions. Collaborate with cross-functional teams in an Agile/Scrum environment to deliver high-quality software. Implement and optimize UI/UX components with SAP Fiori principles for responsive and user-friendly designs. Develop and integrate backend services using Java and SAP technologies to support business processes. Troubleshoot and enhance existing applications, improving performance, scalability, and security. Refactor parts of a large codebase and contribute to building a React application to support development teams. Performed unit and integration testing using Jasmine. Implemented CI/CD pipelines using Jenkins and GitHub Actions; used Git for version control and Jira for Agile task tracking and sprint planning.

Freelance PHP, OpenCart, and SEO Developer at Self-employed

Developed and customized online shopping platforms using PHP and OpenCart; integrated payment gateways, shipping methods, and third-party APIs; conducted comprehensive SEO audits and implemented on-page and technical SEO strategies; defined project scope with clients; managed multiple remote projects to deliver scalable platforms.

Freelance Frontend/SEO Developer at Self-employed

Developed and customized PHP/OpenCart e-commerce stores; integrated payment gateways, shipping methods, and third-party APIs; conducted SEO audits and implemented on-page and technical SEO strategies; collaborated with clients to define scope and requirements; managed multiple projects to deliver scalable, high-performance platforms.

Freelance PHP, OpenCart, and SEO Developer at Self-employed

Developed and customized online shopping platforms using PHP and OpenCart; integrated payment gateways, shipping methods, and third-party APIs to create functional and secure e-commerce stores. Conducted comprehensive SEO audits and implemented on-page and technical SEO strategies to improve organic rankings. Collaborated with clients to define project scope and e-commerce requirements, delivering tailored solutions and managing multiple projects remotely.

Frontend Specialist at Aux code

Led design and development of the company's website; contributed to a renewable energy platform enabling drawing polygons on a world map to estimate energy generation and cost; implemented a polygon tracking system; performed unit testing and built a secure login; tested with Puppeteer.

Frontend Specialist at Aux code

Led the design and development of the company website; contributed to an innovative renewable energy platform enabling users to draw polygons on a world map to estimate energy generation and costs; implemented a polygon tracking system with detailed data attributes to improve data management and UX; performed unit testing and built a secure login form.