Work - Joran Quinten

Work history

An overview of the clients and organisations I've worked with throughout my career. I've had the pleasure of working with a varied range of organisations: from quick start ups to established enterprise organisations and agencies in between. Every type of organisation has taught me valuable lessons which I apply in my daily work.

Freelance
As an independent engineer and technical leader I partner with organisations to bridge the gap between complex technical requirements and product delivery. I step into existing teams to accelerate delivery, audit workflows, or lay the architectural foundation for new digital products. Acting as a hands-on developer or a strategic advisor. With a focus on scalability, clean code, and frontend architecture, I bring cross-industry experience and a deep connection to the JavaScript and Vue.js ecosystem to every engagement.
Jumbo Supermarkten
At Jumbo Tech Campus I led the team responsible for Kompas, the organisation's component library, defining its vision and guiding principles while driving adoption and contribution across design and engineering. I also built and managed a structural collaboration between Fontys University of Applied Sciences and Jumbo Tech Campus through Fontys InnovationLab, supervising students and bridging the gap between academia and industry. As an active conference speaker I represented Jumbo Tech Campus externally, sharing how the second-largest grocery chain in the Netherlands approaches team ownership, frontend architecture, and large-scale collaboration.
Jumbo Supermarkten
At Jumbo Tech Campus I led the team responsible for Kompas, the organisation's component library, defining its vision and guiding principles while driving adoption and contribution across design and engineering. I also built and managed a structural collaboration between Fontys University of Applied Sciences and Jumbo Tech Campus through Fontys InnovationLab, supervising students and bridging the gap between academia and industry. As an active conference speaker I represented Jumbo Tech Campus externally, sharing how the second-largest grocery chain in the Netherlands approaches team ownership, frontend architecture, and large-scale collaboration.
WPP Media (Formerly: Greenhouse Group)
At WPP Media (formerly: Greenhouse Group) I led frontend development of BAAS, a marketing analytics dashboard used across the Greenhouse Group to consolidate and act on campaign data. Working closely with the UX designer I helped shape a shared design language and drove iterative improvements to the product. Alongside this I coached students at Greenhouse Group Labs, a dedicated experimentation department exploring emerging technologies for real-world application.
Capgemini
As a frontend consultant at Capgemini I advised clients and internal teams on architecture, tooling, and working methods across a range of projects. Sitting at the intersection of design, technology, and interaction, I contributed to both early-stage prototypes and iterative sprint deliveries — bringing a pragmatic, cross-disciplinary perspective to every engagement.
Capgemini
As a frontend consultant at Capgemini I advised clients and internal teams on architecture, tooling, and working methods across a range of projects. Sitting at the intersection of design, technology, and interaction, I contributed to both early-stage prototypes and iterative sprint deliveries — bringing a pragmatic, cross-disciplinary perspective to every engagement.
ProRail
As lead frontend engineer at ProRail I designed and built a responsive data portal presenting large volumes of technical information to end users. I owned the full frontend architecture, with the Angular application communicating via RESTful APIs hosted on Microsoft Azure.
Dutch Ministry of Defense
At the Ministry of Defence I developed internal digital tools using Angular and Bootstrap, established coding standards and workflow documentation, and supported the team's transition toward continuous integration practices.
Dutch Ministry of Defense
At the Ministry of Defence I developed internal digital tools using Angular and Bootstrap, established coding standards and workflow documentation, and supported the team's transition toward continuous integration practices.
The Cre8ion.Lab
At The Cre8ion.Lab I grew from junior developer to a trusted technical lead over seven years, building and maintaining frontend solutions and an in-house CMS across a wide range of client projects. Beyond development I acted as a sparring partner for project managers, supervised interns, and managed external relationships — building the well-rounded foundation that shapes how I work today.

What People Say

Luuk Suijkerbuijk

Developer

Jumbo Supermarkten

"A skilled developer who's always exploring new technologies. His drive to innovate and stay up to date—even writing books on his craft—really stands out."

Technical Leadership & Innovation

Fardjad Davari

Engineering Lead

"He is known for presenting and explaining complex concepts in a way that is easily understood by everyone. A rare and valuable skill."

Technical Leadership & Innovation

Jasper Seinhorst

Freelance Frontend Developer

"What I admired most is his ability to explain difficult technical solutions to anyone. I'd recommend Joran as a Frontend Lead in any complex environment."

Technical Leadership & Innovation

Anke de Kok

Visual Designer

"Joran thinks in possibilities rather than 'can't-do's.' He is a great sparring partner and highly skilled in translating design systems into component libraries."

Collaboration & Design

Chris van Zeventer

Scrum Master

Dept®

"He isn't afraid to steer the team when technical decisions go off-track, providing the grounded expertise needed to course-correct early. He won my trust quickly."

Collaboration & Design

Sonam Pandey

Project Manager

Packt

"Joran's expertise is truly impressive. His dedication to excellence and attention to detail ensured the success of our project. A professional and collaborative spirit."

Reliability & Execution

Robbert Segers

Freelance Frontend Developer

"Technically strong and analytically sharp. Joran can analyze problems quickly and consistently delivers great solutions. He was a major asset to our Scrum team."

Reliability & Execution

Fardjad Davari

Engineering Lead

"His presence in any group brings a lot of energy and motivates people to solve the most challenging problems."

Culture & Energy

Luuk Suijkerbuijk

Developer

Jumbo Supermarkten

"A great person to have on the team; someone who keeps things moving and makes room for a good laugh at the right moment."

Culture & Energy

Projects

Some achievements can be framed withing the scope of certain projects. I've listed some personal highlights in the overview below.

Jumbo Front End Platform
To unify Jumbo's fragmented eCommerce application landscape, I contributed to building the Front End Platform: a collection of subsystems delivering a consistent user interface across the customer journey while accelerating feature development and giving content editors greater autonomy over their domain.
My role spanned advisory work on architectural guidelines, defining the philosophy of concern separation across subsystems, and onboarding new teams onto the platform in a developer advocate capacity. The platform also became the central topic of several of my conference speaking engagements.
Web Color Tool
A lightweight developer utility I built to quickly visualise and convert colour values for use in CSS. Input a string of formatted colours and instantly see them rendered in a grid with multiple notation formats.
A small tool that scratches a real developer workflow itch. Live at webcolortool.netlify.app.
Web Color Tool
A lightweight developer utility I built to quickly visualise and convert colour values for use in CSS. Input a string of formatted colours and instantly see them rendered in a grid with multiple notation formats.
A small tool that scratches a real developer workflow itch. Live at webcolortool.netlify.app.
Jumbo Inspiration
Built the frontend platform enabling Jumbo's marketing team to independently launch campaigns and promotions, hereby educing time-to-publish for a new campaign to under one day, without requiring technical support.
The platform uses Vue.js components with a strong focus on SEO and accessibility, integrated with Adobe Experience Manager for content management and a custom-built CloudAdmin platform for managing forms and flows.
Jumbo Kompas
Kompas is Jumbo's organisation-wide design system, enabling an omnichannel experience across web and app. I joined as an advisor on development guidelines and maintenance strategy, then grew into the role of tech lead and co-owner of the component library alongside a design lead. In a small team we migrated the existing codebase into a single source of truth, established a collaboration model between designers and developers, and drove adoption across engineering teams throughout Jumbo Tech Campus.
Jumbo Kompas
Kompas is Jumbo's organisation-wide design system, enabling an omnichannel experience across web and app. I joined as an advisor on development guidelines and maintenance strategy, then grew into the role of tech lead and co-owner of the component library alongside a design lead. In a small team we migrated the existing codebase into a single source of truth, established a collaboration model between designers and developers, and drove adoption across engineering teams throughout Jumbo Tech Campus.
BAAS: Take control of your campaign
BAAS is the central marketing intelligence platform at Greenhouse Group, aggregating data from 15+ sources nightly and normalising it through a custom pipeline so campaign metrics can be compared across channels. Consulted daily by nearly all employees to inform campaign budgets, reach, and strategic decisions, it is the most business-critical tool in the organisation. I led frontend development in an autonomous Kanban team, collaborating closely with backend specialists to deliver new features and maintain the integrity of the dashboard experience.
Doen Vandaag
Doen Vandaag is a side project of mine which I've developed to stimulate parents of young children to find nice, active, educative and creative activities. Suggestions where based on smart assumptions such as weather, seasons and other events.
This project allows for me to experiment with new techniques and features, such as a Google Assistant application, a native mobile app and web application.
Doen Vandaag
Doen Vandaag is a side project of mine which I've developed to stimulate parents of young children to find nice, active, educative and creative activities. Suggestions where based on smart assumptions such as weather, seasons and other events.
This project allows for me to experiment with new techniques and features, such as a Google Assistant application, a native mobile app and web application.
ProRail: Spoordata informatieportaal
As lead frontend engineer I designed and built the architecture for the web portal "Railinformatie Portaal" aggregating documents and data from multiple existing systems into a single, searchable source of truth. The platform served a wide range of users: from contractors needing localised maintenance data in real time, to planners aggregating data for long-term infrastructure decisions. Built on Angular with RESTful APIs on Microsoft Azure.
Ministry of Defense: Advance Passenger Information (API-3)
Developed and improved features for a border control system (API-3) used by the Koninklijke Marechaussee to cross-reference passenger data against watchlists at air and sea ports.
Beyond feature development I established a company-wide frontend standard: introducing automated tooling, documented guidelines, and workshops to align the broader development team on best practices.
Ministry of Defense: Advance Passenger Information (API-3)
Developed and improved features for a border control system (API-3) used by the Koninklijke Marechaussee to cross-reference passenger data against watchlists at air and sea ports.
Beyond feature development I established a company-wide frontend standard: introducing automated tooling, documented guidelines, and workshops to align the broader development team on best practices.
Orangebag.nl
Acted as project manager and technical advisor for Orangebag.nl's e-commerce platform, built end-to-end by The Cre8ion Lab. Drawing on deep knowledge of the system, customer, and end user, I advised on practical solutions with a focus on user experience and scalable automation across the full e-commerce flow from webshop to warehouse.
Fair Play Casino: Gold Rush
Built a web application for Fair Play Casino enabling live draw generation and presentation at events. Also developed a companion platform allowing casino staff to issue and validate tickets via Android devices.
Fair Play Casino: Gold Rush
Built a web application for Fair Play Casino enabling live draw generation and presentation at events. Also developed a companion platform allowing casino staff to issue and validate tickets via Android devices.
Miscellaneous
During my agency years I worked across a wide variety of projects — festival websites for events including Festival Mundial, Extrema Outdoor, and Paaspop, as well as e-commerce platforms and corporate websites for major Dutch organisations.
A personal highlight was a collaboration with Studio HeyHeyHey on Melvin the Magical Mixed Media Machine: a modular Rube Goldberg installation for Dutch Design Week 2011, where physical chain reactions were interwoven with digital interactions including live photography and social media integration.