Prita is available for hire
Hire PritaPrita Hasjim
Verified Expert in Engineering
Front-end Developer
Paris, France
Toptal member since August 3, 2018
Bio
Prita is an expert in React, TypeScript, JavaScript, Angular, Shopify, WordPress, and Squarespace. She is a developer who seeks pixel perfection and gets a thrill from hexadecimal color values. She is not afraid to challenge the status quo and ask how things can be improved. Prita is passionate about building beautiful applications fueled by user-centered design.
Portfolio
Studio VERSŌ
JavaScript, Page Speed Optimization, PageSpeed...
Lazy Dog Restaurants - Main
Food, Shopify Design, Shopify, Artificial Intelligence (AI)...
Sonder
React, React Native, Stream Aligned Teams, Agile, Scrum, Ruby, TypeScript...
Experience
- JavaScript - 10 years
- Animation - 8 years
- Angular - 8 years
- Squarespace - 5 years
- Shopify - 5 years
- Liquid Template - 5 years
- React - 5 years
- TypeScript - 5 years
Work Experience
Front-end Engineer | Shopify & Fitness Platform
2025 - PRESENT
Studio VERSŌ
- Built a multi-platform ecosystem integrating Shopify, Squarespace, and an On-Demand fitness portal, delivering a seamless user experience across eCommerce, bookings, and content access.
- Integrated third-party platforms (IPStudio and MarianaTek) to allow the client to upload/manage content, oversee class schedules, and run core business operations from a centralized, easy-to-use interface.
- Customized Shopify Liquid templates and components with Tailwind CSS and JavaScript, enabling scalable, maintainable front-end patterns aligned with Studio VERSŌ’s brand.
- Developed a universal navigation system that unified disparate platforms into a cohesive, responsive interface, improving discoverability and reducing user drop-off.
Technologies: JavaScript, Page Speed Optimization, PageSpeed, Search Engine Optimization (SEO), Social Networks, Squarespace, Shopify, Figma, WordPress, MarianaTek, Squarespace to WordPress, IPStudio
Shopify Front-end Developer
2025 - 2026
Lazy Dog Restaurants - Main
- Customized the Monochrome Shopify theme using Liquid, HTML, and CSS to align with brand and functional requirements.
- Built and structured reusable page templates and components to support scalable content creation across restaurant locations.
- Developed modular, component-based sections to improve maintainability and consistency; implemented responsive styling to ensure cross-device performance and accessibility; partnered with a designer to implement animations and interactive elements.
- Engineered a custom interactive map feature enabling customers to browse restaurant locations, powered by Shopify Metaobjects, to allow the internal team to easily manage and update location data.
Technologies: Food, Shopify Design, Shopify, Artificial Intelligence (AI), Front-end Development, Experiential Design
Engineering Manager | Guest Mobile Platform & eCommerce
2023 - 2024
Sonder
- Directed development of two high-impact platforms: the Sonder mobile app (guest booking and stay experience) and the eCommerce platform (merchandising, payments, and booking flows), ensuring scalable and responsive architecture.
- Delivered shared platform products — including a unified analytics framework and an end-to-end testing platform — that improved quality, reliability, and engineering velocity across multiple customer-facing applications.
- Partnered cross-functionally with product, design, and operations to translate business requirements into scalable technical solutions that streamlined the guest journey and optimized conversions.
- Pioneered team and process improvements by introducing stream-aligned squads and lightweight collaboration frameworks, which accelerated delivery timelines and increased transparency for stakeholders.
- Mentored engineers and provided technical direction, fostering a culture of knowledge-sharing, skill growth, and autonomy while ensuring alignment with project goals.
Technologies: React, React Native, Stream Aligned Teams, Agile, Scrum, Ruby, TypeScript, Amplitude, Mercurius, Salesforce, eCommerce, CSS, GitHub, Git, Front-end Development, HTML, Adobe InDesign, Angular Material, Figma, Asana, Responsive Web Design (RWD), Framer Motion, Lottie, iOS Animations
Staff Software Engineer | Mobile Platform Team Lead
2020 - 2023
Sonder
- Built and scaled the Sonder mobile app, leveraging React Native within a Rails monolith, helping it achieve a Top 200 ranking in the App Store (Travel category) and serve 500,000+ active users.
- Designed and led development of the guest-to-agent messaging platform, delivering real-time support via React (agent UI), Salesforce, and Sendbird, and integrating Gifted Chat and RN into the guest experience within the app.
- Shipped high-value guest features, including a reservation calendar, a redesigned “My Stay” screen, and mobile key functionality, directly improving booking flexibility, usability, and guest satisfaction.
- Introduced and standardized Agile practices (retrospectives, sprint grooming/planning, story point calibration, design sprints), which improved delivery velocity, cross-team alignment, and product quality.
Technologies: React Native, TypeScript, Front-end, User Interface (UI), Animation, User Experience (UX), eCommerce, CSS, GitHub, Git, Front-end Development, HTML, Adobe InDesign, Angular Material, Figma, Asana, Salesforce, Amplitude
Software Engineer | Employer Portal
2019 - 2020
Collective Health
- Delivered the Employer Portal (EP), a React web application that streamlined health insurance management for client companies, launched successfully with a 7-person cross-functional team while serving as scrum master.
- Built a centralized login portal in AngularJS, consolidating authentication logic across three Collective Health platforms, which reduced development time and maintenance overhead.
- Contributed to the design and implementation of an internal component library and design system in Svelte, improving consistency, reusability, and delivery speed across multiple product teams.
Technologies: React, AngularJS, JavaScript, Front-end, Web Development, User Interface (UI), Animation, User Experience (UX), CSS, GitHub, Git, Bootstrap, Front-end Development, HTML, Adobe InDesign, Angular Material, Vue
Senior Front-end Engineer
2014 - 2018
Illumina
- Spearheaded the development of a web application built entirely from scratch in Angular that delivered critical medical diagnostics to transplant patients, directly improving care outcomes and patient satisfaction.
- Founded Illumina’s BaseSpace component library, collaborating with a 5-person cross-departmental team to create scalable UI components, which cut development time for subsequent projects.
- Led user research and case studies for Illumina’s flagship iSeq 100 and NovaSeq platforms, driving innovative design solutions and resulting in two issued design patents.
Technologies: Angular, AngularJS, JavaScript, Front-end, Web Development, User Interface (UI), Animation, User Experience (UX), CSS, GitHub, Git, Bootstrap, Front-end Development, HTML, Adobe InDesign, Angular Material, Vue
Project History
Studio VERSŌ On-demand Platform
https://ondemand.studioverso.ca/I developed ondemand.studioverso.ca, an on-demand fitness platform built on the IPStudio platform, enabling Studio VERSŌ to deliver digital content and expand its offerings beyond the physical studio.
Key Contributions:
• Integrated and customized the IPStudio platform to support on-demand video streaming, class scheduling, and content management for Studio VERSŌ’s fitness clients.
• Collaborated with stakeholders to design intuitive user flows for browsing, purchasing, and accessing digital classes, ensuring a seamless extension of the in-studio experience.
• Implemented responsive UI components and tailored branding across the platform to reflect Studio VERSŌ’s modern identity.
• Helped establish an operational framework for content uploads and scheduling, enabling staff to manage classes and digital content with minimal technical overhead.
Key Contributions:
• Integrated and customized the IPStudio platform to support on-demand video streaming, class scheduling, and content management for Studio VERSŌ’s fitness clients.
• Collaborated with stakeholders to design intuitive user flows for browsing, purchasing, and accessing digital classes, ensuring a seamless extension of the in-studio experience.
• Implemented responsive UI components and tailored branding across the platform to reflect Studio VERSŌ’s modern identity.
• Helped establish an operational framework for content uploads and scheduling, enabling staff to manage classes and digital content with minimal technical overhead.
Studio VERSŌ Shopify Platform
I designed and developed Studio VERSŌ’s Shopify eCommerce site, creating a unified online hub for merchandise sales, membership packages, and fitness program offerings.
Key Contributions:
• Customized Shopify Liquid templates with Tailwind CSS and JavaScript, delivering responsive, branded storefront experiences.
• Implemented custom navigation flows that connected Shopify with Studio VERSŌ’s Squarespace and On-Demand platforms, creating a seamless cross-platform ecosystem.
• Built interactive product carousels and optimized storefront layouts to improve discoverability and user engagement.
• Integrated third-party services to streamline purchasing, class bookings, and customer account management, improving operational efficiency.
Key Contributions:
• Customized Shopify Liquid templates with Tailwind CSS and JavaScript, delivering responsive, branded storefront experiences.
• Implemented custom navigation flows that connected Shopify with Studio VERSŌ’s Squarespace and On-Demand platforms, creating a seamless cross-platform ecosystem.
• Built interactive product carousels and optimized storefront layouts to improve discoverability and user engagement.
• Integrated third-party services to streamline purchasing, class bookings, and customer account management, improving operational efficiency.
Sonder Guest Mobile App
Sonder is a modern hospitality company redefining the hotel experience through its digital-first approach. The Sonder mobile app has ranked in the Top 200 Travel Apps in the App Store and has been used by 500,000+ guests worldwide.
Key Contributions:
• Led the development of the guest-to-agent messaging platform, building both the guest interface (React Native, Sendbird, Gifted Chat) and the agent interface (React + Salesforce integration) to enable real-time support.
• Delivered core guest features including a reservation calendar, a redesigned “My Stay” screen, and mobile keys, improving booking flexibility and enhancing the guest experience.
• Collaborated cross-functionally with product and design teams to align features with guest needs, ensuring both usability and scalability.
Key Contributions:
• Led the development of the guest-to-agent messaging platform, building both the guest interface (React Native, Sendbird, Gifted Chat) and the agent interface (React + Salesforce integration) to enable real-time support.
• Delivered core guest features including a reservation calendar, a redesigned “My Stay” screen, and mobile keys, improving booking flexibility and enhancing the guest experience.
• Collaborated cross-functionally with product and design teams to align features with guest needs, ensuring both usability and scalability.
DNA Sequencer Controlled by an iPad App
A proof-of-concept project exploring how an iPad app could control a DNA sequencer. The app allowed lab technicians to:
• Monitor a fleet of sequencers in real time.
• Initiate and halt sequencing runs remotely.
• View machine operational status and diagnostics at a glance.
Key Contributions:
• Conducted user research and workflow analysis to define technician needs and lab use cases.
• Designed mockups, workflow diagrams, and interactive prototypes, evolving into high-fidelity UI and motion design prototypes.
• Recognized as a listed inventor on U.S. Design Patent USD810112S1, awarded for this interface design.
• Monitor a fleet of sequencers in real time.
• Initiate and halt sequencing runs remotely.
• View machine operational status and diagnostics at a glance.
Key Contributions:
• Conducted user research and workflow analysis to define technician needs and lab use cases.
• Designed mockups, workflow diagrams, and interactive prototypes, evolving into high-fidelity UI and motion design prototypes.
• Recognized as a listed inventor on U.S. Design Patent USD810112S1, awarded for this interface design.
NovaSeq UI Design
The NovaSeq is a high-throughput DNA sequencer and one of Illumina’s flagship products. I collaborated with software engineers and biotechnologists to design the platform’s user interface from its earliest stages.
Key Contributions:
• Served as UX designer, researcher, and product designer, shaping the platform’s initial concept and user workflows.
• Designed and iterated wireframes and prototypes, incorporating findings from multiple rounds of usability testing with lab technicians.
• Partnered with another product designer to craft the final UI, ensuring alignment with Illumina’s brand language and a seamless transition from wireframes to production.
• Recognized as a listed inventor on U.S. Design Patent USD965626S1 for contributions to the NovaSeq interface.
Key Contributions:
• Served as UX designer, researcher, and product designer, shaping the platform’s initial concept and user workflows.
• Designed and iterated wireframes and prototypes, incorporating findings from multiple rounds of usability testing with lab technicians.
• Partnered with another product designer to craft the final UI, ensuring alignment with Illumina’s brand language and a seamless transition from wireframes to production.
• Recognized as a listed inventor on U.S. Design Patent USD965626S1 for contributions to the NovaSeq interface.
Education
2010 - 2014
Bachelor's Degree in Computer Science and Interdisciplinary Computing Art
University of California, San Diego - San Diego, California
Certifications
SEPTEMBER 2015 - SEPTEMBER 2017
Certified Scrum Master
Scrum Alliance
Skills
Libraries/APIs
React, SendBird, Vue, Framer Motion, Liquid
Tools
GitHub, Git, Adobe Photoshop, Adobe InDesign, Asana, React Apollo, Sketch, Axure RP Pro, InVision, Vim Text Editor, Figma, CAD, Adobe After Effects, PageSpeed
Languages
HTML, CSS, TypeScript, JavaScript, Liquid Template, Ruby, Swift, C#
Frameworks
Bootstrap, AngularJS, Angular, Angular Material, React Native, Tailwind CSS
Paradigms
Scrum, Agile, Responsive Web Design (RWD), Search Engine Optimization (SEO)
Platforms
Shopify, Salesforce, WordPress
Other
Front-end Development, Front-end, Web Development, User Interface (UI), Animation, User Experience (UX), Stream Aligned Teams, Mercurius, Squarespace, Amplitude, eCommerce, Lottie, iOS Animations, Page Speed Optimization, Social Networks, MarianaTek, Squarespace to WordPress, IPStudio, Web Content, Content Management, Scheduling, Twine, Food, Shopify Design, Artificial Intelligence (AI), Experiential Design
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