John Dennehy

A versatile web developer with a passion for learning new skills and technology. Before choosing to become developer, spent 18 years in the financial services sector, demonstrating a strong customer and quality focus, along with both team and stakeholder management experience.

Technical Skills

CSS
Docker
Git
Github
HTML
Javascript
Jest
Jira
MobX
Next.js
Node.js
React-Query
React.js
Sass
SQL
Storybook
Typescript

Relevant Experience

Calibrate Consulting

8 Devonshire Sq, London, EC2M 4PL

CSS
Git
Github
HTML
Javascript
Node.js
React.js
Sass
Styled-Components
Typescript

Jan 2023 to Jun 2023 Web Developer

  • Part of a project team for providing a financial services client with Data and analytics via Qlik applications. I developed and implemented the webportal for windows server, which authorised users via Qlik API to display and link to relevant Qlik applications.

  • Worked with our UI Designer to convert our existing project into a "white-label" framework for promptly creating responsive React web applications for other clients.

  • Coached junior developers in the adoption and practical application of modern tools and methodologies within the React ecosystem, including Typescript, Vite, PNPM

Litta

Sopers House, Sopers Rd, Cuffley, Potters Bar, EN6 4RY

CSS
Firebase
Git
HTML
Jira
Material UI
React-Query
React.js
Sass
Storybook
Styled-Components
Typescript

Jul 2022 to Oct 2022 Front-End Engineer

  • Overhauling the legacy applications of a fast paced start-up.

  • Designed and built a dynamic 'no-code' form builder, using React, Typescript, Firestore, React-Hook-Forms and React-Router. Allowing non-developers to design a form on Airtable and that could be online for users in seconds.

Alpian Technology

123 Buckingham Palace Road, London, SW1W 9SH

CSS
Git
Github
HTML
Jira
Material UI
React-Query
React.js
Typescript

Jun 2021 to Jun 2022 Front-End Engineer

  • Creating the front end for the back-office application for a Swiss Bank fintech startup, using with React, Typescript and React-Query.

  • Responsible for delivering complex solutions, inline with product owners requirements, tight deadlines, while ensuring all regulatory and security obligations are met.

  • Often the sole frontend developer within agile, cross functional, and international scrum teams, demonstrating strong communication and collaboration skills.

  • Made strong use of a previous career in the financial sector to bring focus to real-world use cases and product opportunities.

Avado Learning

White City Campus, London, W12 7RZ

Bitbucket
CSS
Docker
Git
HTML
Javascript
Jira
MobX
PostgreSQL
React.js
Sass
SQL
Storybook
Typescript

Mar 2020 to Jun 2021 Junior Front-End Developer

  • Responsible for creating new React front end to replace legacy platform, with MobX state management and connecting to a PHP backend via API.

  • Researched, implemented and advocated for a component library and TDD process using Storybook.js and React-testing-library.

  • Championed the switch to Typescript, and supported colleagues with the trantransition by providing Knowledge sharing sessions and documentation.