Senior Front End Developer
Current
Jul 2021 - Present
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Leon S. Email & Phone Number
Senior Front End Developer at Kallidus
at
Kallidus
LinkedIn matched
✓ Verified May 2026
3 data sources
Profile completeness 86%
Current company
Role
Senior Front End Developer at Kallidus
Location
Taunton, England, United Kingdom
Company size
Who is Leon S.? Overview
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Quick answer
Leon S. is listed as Senior Front End Developer at Kallidus at Kallidus, a company with 118 employees, based in Taunton, England, United Kingdom. AeroLeads shows a matched LinkedIn profile for Leon S..
Leon S. previously worked as Senior Front End Developer at Kallidus and Front End Developer at Kallidus. Leon S. holds Ba Philosophy And English Literature, Arts & Humanities from The University Of Reading.
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Email format at Kallidus
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Kallidus
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Profile bio
About Leon S.
Somerset based Senior Front End Developer with over a decade of web development experience.
Current workplace
Leon S.'s current company
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Kallidus
5 roles
Leon S. work experience
A career timeline built from the work history available for this profile.
Front End Developer
- Initially employed by Advorto before their acquisition by Kallidus, I work remotely as part of an Agile team of developers on the company’s SaaS products. My responsibilities include:
- Working on the client-side code for the company's various SaaS solutions, including the Learning Management System, Performance Management System, Applicant Tracking System, and Onboarding/HR Software.
- Working alongside other developers, product owners, and consultants, across multiple locations (UK,… Show more Initially employed by Advorto before their acquisition by Kallidus, I work remotely as part of an Agile.
- Working alongside other developers, product owners, and consultants, across multiple locations (UK, Europe, and internationally), to define, design, implement, and test product additions.
- Utilising valid HTML5, scalable CSS3, and high quality JavaScript and TypeScript for development work on products across varying ecosystems and tech stacks.
- Using current (and past) established frameworks, tools, and libraries, including: React, Knockout, GraphQL, Webpack, Less, Sass, PostCSS, etc.
Oct 2017 - Jul 2021
Front End Developer
Initially working in London before moving to be fully remote, I worked on the client-side code of the company’s SaaS products, defining, designing, implementing, and testing additions alongside the rest of the team. I took full ownership of the design (using Photoshop), UX, and client-side code (using HTML5, CSS3, and JavaScript), and also developed.
Jan 2016 - Oct 2017
Ui Developer
- I worked as part of an expanding team of front and back end developers in an ASP.NET environment developing large commercial websites based on the Sitecore and Umbraco CMSs.My role and responsibilities here included:
- Working in teams with other Front-End and Back-End developers on new and existing client projects with varying methodologies
- Translating site visuals into well-structured responsive websites using HTML5, CSS3, and JavaScript (including use of jQuery, and various… Show more I worked as part of an expanding team of front and back end.
- Translating site visuals into well-structured responsive websites using HTML5, CSS3, and JavaScript (including use of jQuery, and various third party libraries and APIs).
- Ensuring sites were cross-browser compatible, usually back to IE7 or 8 (depending on client requirements), through thorough browser testing
- Responsive, cross-browser, and cross-device testing
May 2013 - Jan 2016
Ui Developer / Designer
Freelance
Website design and development for various projects, involving: coding valid and well structured HTML, CSS, and Javascript; responsive and cross-browser compatible design and development; and search engine optimisation.
Jul 2012 - Jun 2013
Team & coworkers
Colleagues at Kallidus
Other employees you can reach at kallidus.com. View company contacts for 118 employees →
FP
Fay Pearce
Colleague at Kallidus
Swindon, England, United Kingdom, United Kingdom
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CF
Carmine Filarmonico
Colleague at Kallidus
West Midlands, England, United Kingdom, United Kingdom
View →
AW
Alison Wright
Colleague at Kallidus
Cirencester, England, United Kingdom, United Kingdom
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NS
Nikolas Stephan
Colleague at Kallidus
London, England, United Kingdom, United Kingdom
View →
TH
Toni Hardie
Colleague at Kallidus
Cirencester, England, United Kingdom, United Kingdom
View →
EC
Estefany Cerda
Colleague at Kallidus
San Francisco, California, United States, United States
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SN
Sravan Nakka
Colleague at Kallidus
Hyderabad, Telangana, India, India
View →
ET
Emma Townsend
Colleague at Kallidus
Cheltenham, England, United Kingdom, United Kingdom
View →
JH
Jessica Hunter
Colleague at Kallidus
West Sussex, England, United Kingdom, United Kingdom
View →
ER
Ella Roberts
Colleague at Kallidus
Bristol, England, United Kingdom, United Kingdom
View →
Fay Pearce
Colleague at Kallidus
Swindon, England, United Kingdom, United Kingdom
View →
CF
Carmine Filarmonico
Colleague at Kallidus
West Midlands, England, United Kingdom, United Kingdom
View →
AW
Alison Wright
Colleague at Kallidus
Cirencester, England, United Kingdom, United Kingdom
View →
NS
Nikolas Stephan
Colleague at Kallidus
London, England, United Kingdom, United Kingdom
View →
TH
Toni Hardie
Colleague at Kallidus
Cirencester, England, United Kingdom, United Kingdom
View →
EC
Estefany Cerda
Colleague at Kallidus
San Francisco, California, United States, United States
View →
SN
Sravan Nakka
Colleague at Kallidus
Hyderabad, Telangana, India, India
View →
ET
Emma Townsend
Colleague at Kallidus
Cheltenham, England, United Kingdom, United Kingdom
View →
JH
Jessica Hunter
Colleague at Kallidus
West Sussex, England, United Kingdom, United Kingdom
View →
ER
Ella Roberts
Colleague at Kallidus
Bristol, England, United Kingdom, United Kingdom
View →
3 education records
Leon S. education
Ba Philosophy And English Literature, Arts & Humanities
Education record
Colchester Sixth Form College
Education record
Hadleigh High School
FAQ
Frequently asked questions about Leon S.
Quick answers generated from the profile data available on this page.
What company does Leon S. work for?
Leon S. works for Kallidus.
What is Leon S.'s role at Kallidus?
Leon S. is listed as Senior Front End Developer at Kallidus at Kallidus.
Where is Leon S. based?
Leon S. is based in Taunton, England, United Kingdom while working with Kallidus.
What companies has Leon S. worked for?
Leon S. has worked for Kallidus, Advorto, Codehouse, and Freelance.
Who are Leon S.'s colleagues at Kallidus?
Leon S.'s colleagues at Kallidus include Fay Pearce, Carmine Filarmonico, Alison Wright, Nikolas Stephan, and Toni Hardie.
How can I contact Leon S.?
You can use AeroLeads to view verified contact signals for Leon S. at Kallidus, including work email, phone, and LinkedIn data when available.
What schools did Leon S. attend?
Leon S. holds Ba Philosophy And English Literature, Arts & Humanities from The University Of Reading.
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