Hey, I'm Jacob Herper

Technologies: TypeScript, React, Next.js, XState, Redux, GraphQL, Rest APIs, React Query, Jest, Cypress, Playwright, Turborepo

• Joined Holland & Barrett as a senior front-end software engineer during a digital transformation journey in the cross-functional order management squad
• Single-handedly developed several front-end applications to manage customer orders and product subscriptions for customer service teams and customers self-serve capability
• Integrated front-end applications with back-end microservices (mostly RESTful APIs, but also GraphQL)
• Transitioned to a new squad to focus on contact centre solutions, growing the team from scratch by hiring and onboarding six engineers, and a product manager
• Successfully implemented a one-stop solution tool, reducing AHT by 60%, cutting costs up to 70%, and significantly enhancing efficiency for customer service agents
• Demised multiple third-party enterprise solutions, saving the company £1m+ p.a.
• Promoted to Lead Engineer to spearhead the development of innovative solutions, including a meeting booking solution and custom video conferencing tool

Technologies: JavaScript, ES6, React, GraphQL, Sass, Node.js, Express, Webpack, Apollo

• Joined as a Senior Front-End Engineer during the re-platforming of their online publishing platform from a Drupal monolith to microservices and React-based front-end applications
• Conducted a comprehensive code audit of an external agency's work, addressing issues such as N+1 problem in GraphQL by implementing the dataloader pattern
• Prioritised and resolved major accessibility issues, collaborating with the product lead to enhance the overall code quality and establish best practices
• Implemented Google AMP across the application framework, resulting in a 38% improvement in pagespeed insights score and the elimination of layout shifts for enhanced SERP rankings
• Developed in-house advertising platform, leading to an 8% increase in advertising revenue across all websites
• Responded to a staff redundancy announcement by offering resignation to safeguard team members on visa sponsorships and ensure their positions

Technologies: TypeScript, React, Gatsby, Next.js, GraphQL, Rest APIs, Styled-Components

• Joined as first JavaScript developer to lead the move away from WordPress-based monolithic architectures to more robust and modern React-based systems
• Developed React web applications using TypeScript, Next.js, Gatsby, GraphQL and Styled-Components with global state management through Context API
• Worked with WordPress as a headless CMS using GraphQL and REST APIs
• Developed B2B web applications for several Fortune 500 clients using vanilla JavaScript (ES6) and React
• Worked on legacy projects using ES5 JavaScript syntax with Gulp as a task runner

Technologies: JavaScript, PHP, Sass, React, Angular, Gatsby, WordPress, Drupal

• Development of web applications for small and medium-sized businesses using JavaScript, React, PHP, Sass, HTML5, WordPress, Drupal and different e-commerce solutions
• Specialised in bespoke client solutions for London-based startups
• Design of digital assets and print products
• Management of freelance and contract engineers for international projects
• Search engine optimisation and search engine marketing

Technologies: JavaScript, PHP, React, WordPress, jQuery, Rest APIs, Sass

• Tech lead in design and development of new website following brand guidelines based on WordPress, PHP, HTML5, CSS and JavaScript
• Orchestrating web development work between London and Atlanta offices
• Collaborating with teams in Beijing, Dublin, New York and Bonn offices to develop custom experiences for clients across the world
• Development of a web application for a contender energy provider in collaboration with TSW Creative for critical campaign launch under time pressure
• DevOps tasks monitoring and maintaining Apache server infrastructure and DNS
• Development of PWA (React) for an event with 250+ attendees
• Collaborated with internal creative agency to deliver assets for pitches

Technologies: React, TypeScript, Next.js, Node.js, Express, Sass, Angular, MongoDB

• Built a web app to revolutionise the real estate sector in Germany
• Developed Immovato from the first concept to release of MVP
• Managed two developers (front-end and back-end) in the development of our application, initially based on Angular (JavaScript) and Laravel (PHP)
• Moved tech stack to MERN (MongoDB, Express.js, React, Node.js) for an improved performance and DX

Technologies: PHP, JavaScript, HTML, CSS, MySQL, Sass

• Started working for ASA as a web designer and developer during final years of college, building and maintaining e-commerce websites and product landing pages
• First insights into day-to-day operations of e-commerce business (B2B and B2C)
• Design and conception of new products, packaging, brochures, advertising material
• Design and execution of international trade shows and B2B events
• Launch of UK branch of ASA Europe in Chelmsford, Essex
• Market research and legal compliance analysis for the trade of tobacco products in the United Kingdom, meetings with UK Trade & Investment and HMRC to explore importing of restricted goods
• Built retail business to become highest-grossing of its kind in the UK within 12 months