Alessandro Santese

Lead Frontend Engineer | React, JavaScript

Salary / Daily rate

Sutton, UK

Mobility: London, 72019 San Vito dei...

Freelance, open to permanent contract

Remote only

Skills

JavascriptReactCSSHTMLNodeSupabasePythonMongoDBReduxA/B TestingTailwind CSSWebpackSassVercelTest Driven DevelopmentFrontend DevelopmentData VisualizationTesting & QAExpressProduction EngineeringPostmanDatadogClean ArchitectureClean CodeJiraBootstrapJenkinsTypescriptNextHerokuDesign Thinking

Languages

Italian (Native)English (Fluent)

About me

Intro

Independent senior front-end consultant with over 15 years of experience delivering robust, scalable UIs to clients across e-commerce, media, and SaaS sectors. Specialised in providing value-driven, outcome-oriented solutions as part of short and long-term digital transformation projects.

Links

Work experience

CTO

The Founders JunctionFreelance

Nov 2025 - Present

1 year

London, UK

Leading product development and translating the founder’s vision into a scalable, user-focused MVP. - Architected and rebuilt the platform end-to-end using Next.js and Supabase - Implemented Stripe subscription billing with secure webhook handling via Supabase Edge Functions - Designed membership-tier logic with usage limits and database-level authorization - Structured backend architecture for scalable subscription management and future growth - Deployed and managed production infrastructure on Vercel - Exploring AI-driven features to improve user matching, discovery, and overall product experience.

Lead Frontend Engineer

Elsewhen

Jan 2024 - Present

2 years 10 months

• Created a geospatial visualization with Mapbox and H3.js, using hexagons and point of interests to explore spatial relationships between two distinct datasets. • Integrating Advanced Data Visualization: Added new features enabling users to access and analyse more data through interactive charts. • Improving Code Quality: Refactored critical code and implemented comprehensive unit tests to ensure robustness and reliability. • Collaborating for Optimal Solutions: Worked closely with the back-end, UX and QA team to deliver the most effective and user-friendly solutions.

Senior Frontend Engineer

Diageo

Nov 2023 - Dec 2023

2 months

London, UK

Lead Frontend Engineer

S64 Capital Innovation

Jun 2022 - Dec 2023

1 year 7 months

Responsible to build a scalable front end architecture by applying effective engineering practices and by building a solid UI foundation. Working closely with the business to apply a more intuitive UX based on requirements. Worked extensively on the Back End with MongoDB and Mongoose to write crucial business services to provide data to the Front End.

Senior Frontend Engineer

Zego

Oct 2021 - Jul 2022

10 months

Micro-frontend architecture project with React, Tailwind, Next.js, Sanity CMS, Storybook, GraphQl and LaunchDarkly

Frontend Developer

Wowcher

Jun 2021 - Oct 2021

5 months

Ecommerce project: Next.js, React, Redux, React Bootstrap and Storybook

Full Stack Engineer

Beauty Pie Ltd

Dec 2020 - Jul 2021

8 months

Ecommerce project: Next.js, GraphQl, Apollo, React, TypeScript, Chakra UI, Cypress, Storybook, Contentful CMS

Frontend Consultant

Amido

Aug 2020 - Dec 2020

5 months

Ecommerce project with a SSR application (Next.js), developed using two headless CMS (Dato and Commercetools), to provide content and functionality to the front end layer (React, TypeScript, Tailwind and Storybook).

React Front End Engineer

Clear AIFreelance

Apr 2020 - May 2020

2 months

Their current MVP had a UI which wasn’t built using the latest front-end stack. Since it was necessary to make the product scalable on the front-end, React, Redux and TypeScript were used to rebuild the demo functionality. Most of the technical work involved the use of Mapbox. (https://www.mapbox.com/)

Front End Consultant - Contractor

Amido

Oct 2019 - Mar 2020

6 months

I was hired for the second time to work for one of their clients (Peabody) to build together, with a team of about 14 people, an internal platform to help manage their products. Technologies used: React, Redux, TypeScript, Material UI, styled components, React Testing Library and Storybook.

React Developer - Contractor

Penfold | The digital pension

Aug 2019 - Oct 2019

3 months

London, UK

Adding new features using React, GraphQL, styled components and storybook. Using Jest and Enzyme to unit test critical functionality of the product.

Front End Consultant - Contract

Amido

Sep 2018 - Jul 2019

11 months

London, UK

Working with React, Redux, ES6, Node and Jest to deliver an identity platform for one of the major clients (BBC).

React Frontend Developer - Contractor

Dauntless

Jun 2018 - Oct 2018

5 months

Epsom, UK

Working with React, MobX, Mobx-React-Form, Flow, ES6 and Enzyme to add new features to a major single page application. Occasionally helping out with other projects built on Wordpress.

Front End Developer - Contractor

Rapha Racing Limited

Mar 2018 - May 2018

3 months

London, UK

Building new features and fixing bugs to help to launch the new website ( https://www.rapha.cc/ ) using: HTML5, CSS3, vanilla JS, Preact, Redux, Umbrella.js and Hybris ( https://www.hybris.com/en/ )

Senior Frontend Engineer

Concrete (concrete.cc)

Jan 2018 - Mar 2018

3 months

Improving the web based product (task management) with new features and updating the UI using React, Redux, ES6, and styled components.

Lead Front End Developer

Radancy

Nov 2016 - Jan 2018

1 year 3 months

London, UK

100% hands on role working on a variety of projects in a fast pace environment. Supporting other front end developers in their learning and organising presentations to share new technologies and front end best practices. Creating an effective development workflow that includes design front end guidelines, components based approach and code reviews. Focusing heavily on accessibility standards. (AA to AAA) Working closely with project manager and creative department. Technologies used on a daily basis: HTML5, CSS3, CSS transition/animation, jQuery, React.js, ES6 and webpack/gulp., Twig, Drupal.

Hostelworld Group

Dec 2013 - Oct 2016

2 years 11 months

London, UK

UI Manager

Jul 2015 - Oct 2016

1 year 4 months

London, UK

100% hands on, getting involved with the front end daily development. Leading and managing a team of 3 UI Developers to guarantee the delivery of the UI aspect for Hostelworld Group. Liaising with project managers and management team to guarantee an effective flow of information. Experimenting with new frameworks and build prototypes to present to the rest of the team as a possible future solution. Working with VWO to run A/B tests on hostelworld.com

UI Engineer

Dec 2013 - Jul 2015

1 year 8 months

London, UK

Working within an Agile environment made of 3 sprint teams. Collaborating closely with PHP developers and project managers to guarantee an effective implementation of new functionalities across Hostelbookers adaptive site. Implementing Foundation and SASS for better maintenance and front end performance. Making an effective use of Sublime Text plugins for a more efficient workflow. Mentoring junior developers and being proactive in solving or suggesting solutions for other development teams. Keeping UI and JS coding standards up to date with the latest trends and discoveries. Building JS libraries for better maintenance and reusable code across Hostelbookers functionalites. Working closely with designers to create a fresh and innovative look for Hostelbookers, making sure that business requirements are carefully met.

Front End Web Developer

Saatchi & Saatchi

Jul 2012 - Dec 2013

1 year 6 months

London, UK

A variety of facebook tabs were built for major brands like WeightWatchers and Candyland for important weekly competitions. Different technologies were used to develop the amazing designs. HTML5 and CSS3 (with the help of LESS and Modernizr) guaranteed that the final product would be usable and matched the designs while maintaining legacy browser compatibility. Working closely with PHP developers to guarantee an effective back-end integration.

HTML Developer

TAG

Feb 2012 - Jul 2012

6 months

London, UK

- Ensuring that websites work effectively in the majority of browsers including older versions of Internet Explorer - Coding PSD email designs in HTML - Running email tests verification on different clients (Hotmail, Outlook) - Debugging JavaScript and jQuery files (building jQuery scripts to improve usability and functionalities within a microsite/site) - Editing file structures to accommodate new design features - Version management software - SVN

Junior web developer

University of Greenwich

Jun 2011 - Dec 2011

7 months

Squiz Matrix Open Source was the CMS used to conduct the following activities: - Built the Business School microsite - Building and testing of microsites - Maintenance, update and testing of website architecture - Image manipulation in different formats -Working with XML and CSS files to make sure the information would be displayed correctly


Education

University of Greenwich

BSc Digital Media Technologies, Web Technologies

2009 - 2011

2 years 1 month

Activities and societies: Responsible to build the website for the final year Degree Show 2011 - DF11 - Digital FreeForm 2011

Dissertation titled: "An investigation into the emerging technologies of HTML5 and CSS3 compared to earlier versions of HTML and CSS, illustrated with the implementation of an online portfolio."

Lambeth College

Diploma, Web Design

2007 - 2008

1 year 1 month

Web Design Diploma


Licenses & certifications

Introduction to AI Agents

Issued: May 2026

Certified by DataCamp

Associate AI Engineer for Developers

Issued: Mar 2026

Certified by DataCamp

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