Mark – AWS, Typescript, React

Backend systems for a national electricity infrastructure provider, supporting critical energy operations and data processing. The platform enables reliable integration between internal systems and external services while ensuring scalability and operational efficiency. It is designed to support high availability and automation across infrastructure and workflows.

• Developed a suite of backend and integration layer applications hosted on AWS;
• Leveraged AI practices to automate routine tasks, increasing operational efficiency;
• Achieved 100% unit test coverage by implementing BDD-style tests using Mockito;
• Developed and maintained infrastructure as code using Terraform and Ansible;
• Facilitated Agile ceremonies and drove collaboration across distributed squads.

A B2B commerce platform for a national postal service, enabling business customers to manage shipping, payments, and logistics through a unified digital interface. The system integrates with multiple internal and external services to support secure transactions and operational workflows. It is designed to meet strict compliance and reliability requirements in a regulated environment.

• Led frontend development using React, Redux, and MUI, including a React 16 / MUI v5 upgrade;
• Developed a PCI-compliant payment solution using React, Mulesoft, and Windcave APIs;
• Built APIs and integrations using Java and Spring Boot;
• Built integrations using Mulesoft Anypoint;
• Managed CI/CD pipelines across Jenkins, Docker, AWS, and Azure DevOps;
• Oversaw release and change management in a regulated enterprise environment.

Wholesale e-commerce platforms for food and grocery businesses, designed to support large-scale ordering and efficient product management. The systems enable business customers to browse catalogs, place bulk orders, and streamline procurement processes. The platforms focus on performance, scalability, and maintainability.

Led a major site refactor using Backbone.js and Handlebars, improving page load times by 30%; Introduced Git and an automated release pipeline; Provided technical leadership and mentoring, and organized a UI Guild for knowledge sharing.

An e-commerce platform designed to support high user traffic and dynamic marketing campaigns. The product enables users to browse and purchase goods while allowing business teams to manage content and campaigns through CMS-driven pages. It includes a shared component library to ensure consistency and scalability across the platform.

• Built and maintained frontend features using Angular (9–11) in an NX monorepo;
• Played a key role in keeping the site stable during COVID demand spikes;
• Developed reusable Storybook components and CMS-driven marketing pages;
• Contributed to backend development using .NET.