Mark Williams Email & Phone Number

-Led cross-functional teams to deliver seamless web solutions, conducted code reviews, and mentored junior developers.- Spearheaded the migration to the latest versions of React and Angular, significantly improving performance and maintainability.- Developed and integrated microservices using Azure, Node.js, Java, Python, AEM, ADA, Nx, and .NET Core.- Enhanced application stability and user satisfaction by resolving complex issues.- Fostered a culture focused on UI/UX best… Show more -Led cross-functional teams to deliver seamless web solutions, conducted code reviews, and mentored junior developers.- Spearheaded the migration to the latest versions of React and Angular, significantly improving performance and maintainability.- Developed and integrated microservices using Azure, Node.js, Java, Python, AEM, ADA, Nx, and .NET Core.- Enhanced application stability and user satisfaction by resolving complex issues.- Fostered a culture focused on UI/UX best practices and code standards, resulting in a 30% reduction in bug reports and a 25% improvement in overall user satisfaction.- Managed project milestones, budgets, and risks, achieving a 98% on-time delivery rate and a 5% increase in project profitability. - Optimized application performance and security, ensuring robustness and reliability of backend systems.- Created interactive and user-friendly UIs, designing and developing full-stack applications using modern industry-adopted languages and frameworks.- Developed and maintained real-time chat functionality using WebSocket technology, improving user engagement and retention.- Demonstrated Experience in conducting accessibility audits , identifying issues, and implementing remediation strategies to enhance user accessibility.- Proficient in ensuring web and application accessibility by following WCAG standards, making digital content inclusive to all users.- Developed applications using modern JavaScript features introduced in ES6 such as arrow functions, template literals, destructuring assignment, and spread syntax. Show less

- Led the full-stack development of a high-performance eCommerce website using React, Next.js, Angular, Node.js, Java, .NET, Restful API, GraphQL, Redis, Kafka, Kubernetes, Nx, MongoDB, and AWS.- Maintained a comprehensive library of reusable React components, ensuring all web pages were pixel-perfect and mobile-responsive.- Migrated an older JavaScript project to TypeScript, leveraging Node.js for backend services, resulting in improved code scalability and maintainability.-… Show more - Led the full-stack development of a high-performance eCommerce website using React, Next.js, Angular, Node.js, Java, .NET, Restful API, GraphQL, Redis, Kafka, Kubernetes, Nx, MongoDB, and AWS.- Maintained a comprehensive library of reusable React components, ensuring all web pages were pixel-perfect and mobile-responsive.- Migrated an older JavaScript project to TypeScript, leveraging Node.js for backend services, resulting in improved code scalability and maintainability.- Achieved 90% code coverage with Jest, React Testing Library, and Cypress.- Implemented CI/CD pipelines using Jenkins, Docker, and Kubernetes, streamlining deployments and increasing team efficiency.- Mentored and managed a team of three junior developers, fostering a collaborative environment.- Led efforts to optimize application performance, reducing response times by 30% and enhancing user experience.- Conducted code reviews and mentored junior developers, fostering a culture of code quality and best practices.- Integrated GraphQL API queries and mutations deployed on AWS Amplify, enabling seamless and efficient data retrieval and manipulation.- Produced well-documented technical documentation and well-commented code for open-source consumption, contributing to the broader developer community. Show less

- Revamped an employer marketing platform using React and TypeScript, utilizing GraphQL for efficient data management.- Created a scalable design system with Material UI, enhancing UI user-friendliness and long-term maintainability.- Integrated third-party APIs for enhanced functionalities, including payment gateways and data analytics services.- Migrated infrastructure to AWS, optimizing performance, security, and operations, and implemented CI/CD pipelines, reducing deployment… Show more - Revamped an employer marketing platform using React and TypeScript, utilizing GraphQL for efficient data management.- Created a scalable design system with Material UI, enhancing UI user-friendliness and long-term maintainability.- Integrated third-party APIs for enhanced functionalities, including payment gateways and data analytics services.- Migrated infrastructure to AWS, optimizing performance, security, and operations, and implemented CI/CD pipelines, reducing deployment times by 50%.- Developed automated testing frameworks with Jest and Cypress, achieving 80% test coverage.- Developed robust RESTful APIs with Node.js, hosted on Azure for scalability.- Integrated DevOps practices with Docker, Kubernetes, and Azure, establishing a CI/CD pipeline.- Collaborated closely with a seasoned Agile team to deliver high-quality products on time and within budget. Show less

- Improved security features by 25% by enhancing privacy controls using C# and .NET in an internal team.- Utilized the modular architecture to define a range of web components, which were then developed into reusable pieces using HTML, CSS, and JavaScript, serving as the foundation for various web projects.- Specialized in refining the design system and web APIs, making extensive use of tools and languages prevalent during that period, such as jQuery, Bootstrap, and RESTful APIs.-… Show more - Improved security features by 25% by enhancing privacy controls using C# and .NET in an internal team.- Utilized the modular architecture to define a range of web components, which were then developed into reusable pieces using HTML, CSS, and JavaScript, serving as the foundation for various web projects.- Specialized in refining the design system and web APIs, making extensive use of tools and languages prevalent during that period, such as jQuery, Bootstrap, and RESTful APIs.- Collaborated extensively with team members to thoroughly analyze more than 50 business requirements, determine detailed design specifications, and provide guidance throughout the application development process.- Actively participated in all phases of the Software Development Life Cycle (SDLC), including design, development, testing, and deployment, ensuring a seamless and efficient development process.- Developed a custom search engine to interact with PostgreSQL, and CosmosDB, utilizing Express and .NET to provide a fast and efficient web interface. Show less