Senior UI Developer (Contract)

Powering Performance Marketplaces in Digital Media

QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers with brands. We run these virtual- and private-label marketplaces in one of the nation’s largest media networks.

Our industry leading segmentation and AI-driven matching technologies help consumers find better solutions and brands faster. They allow brands to target and reach in-market customer prospects with pinpoint segment-by-segment accuracy, and to pay only for performance results.

Our campaign-results-driven matching decision engines and optimization algorithms are built from over 20 years and billions of dollars of online media experience.

We believe in:

• The direct measurability of digital media.
• Performance marketing. (We pioneered it.)
• The advantages of technology.

We bring all this together to deliver truly great results for consumers and brands in the world’s biggest channel.

Senior UI Developer – Job Description 

Overview 

We are seeking a Senior UI Developer with deep expertise in front-end engineering and a passion for building high-quality, scalable, and performant user interfaces. In this leadership role, you will shape the technical vision, guide front-end strategy, and drive the evolution of user interfaces across our platform. 

As a senior leader, you will collaborate closely with cross-functional teams—including UX, Product, Engineering, and QA—to ensure the seamless delivery of intuitive, accessible, and maintainable web experiences. You will mentor engineers, set technical standards, and play a key role in product planning, architecture, and decision-making at scale. 

This is an ideal opportunity for a UI leader with an architectural mindset who thrives on solving complex problems, driving innovation, and empowering teams to deliver world-class digital experiences. 

Key Responsibilities 

Front-End Architecture & Strategy 

• Lead the architecture, design, and delivery of scalable and modular front-end applications using modern JavaScript frameworks (Vue.js, React.js, Angular, or equivalent) based on the needs of each product area. 
• Define frontend architecture patterns (micro frontends, mono repo management, code splitting, lazy loading) to ensure maintainability and scalability. 
• Evaluate and select technology stacks, libraries, and tooling to align with business goals, team skills, and long-term evolution of the product. 

Design Systems & Component Architecture 

• Drive the creation and governance of enterprise-grade design systems and shared component libraries. 
• Ensure reusability, accessibility (WCAG 2.x compliance), cross-brand theming, and responsive design in component systems. 
• Establish scalable approaches for multi-tenant UI systems supporting white-labeling and customization. 

Performance, Quality & Testing 

• Implement and enforce rigorous performance benchmarks, including First Contentful Paint (FCP), Largest Contentful Paint (LCP), Total Blocking Time (TBT), and Core Web Vitals. 
• Define strategies for frontend observability including performance logging, error reporting, and user monitoring. 
• Design comprehensive testing strategies including: 
• Unit testing (Vitest, Jest) 
• Integration testing (Testing Library) 
• Visual regression testing (Storybook, Percy, Chromatic) 
• End-to-end testing (Cypress, Playwright) 

Security, Resilience, and Compliance 

• Guide implementation of secure front-end architectures(e.g., XSS protection, CSP headers, secure storage). 
• Lead UI-related risk assessments, browser compatibility strategy, and progressive enhancement/degradation. 

Cross-Functional Collaboration & Mentorship 

• Partner closely with Product Managers, UX Designers, Accessibility Teams, and Backend Engineering to align technical execution with business objectives. 
• Lead architecture reviews, RFC discussions, and technical spike evaluations. 
• Mentor front-end engineers across levels, driving excellence in clean code, TDD, accessibility, and responsive UI development. 
• Champion the integration of accessibility (A11Y) and inclusive design from the start of every project. 

 

Requirements 

• 10-15 years of hands-on experience in modern front-end development. 
• Expert-level proficiency in Frameworks available(including Angular, react, vueJS is a plus). 
• Strong foundational knowledge of React.js, including its component model, hooks, and architectural patterns. 
• Proven track record of designing and implementing comprehensive test strategies using tools like Vitest, Vue Test Utils, React testing libraries or Jest. 
• Deep understanding of frontend performance optimization, browser rendering internals, and accessibility standards (WCAG). 
• Understanding of design patterns. 
• Demonstrated leadership in code reviews, sprint planning, architectural design, and project execution. 
• Strong collaboration and communication skills, with the ability to effectively convey technical vision to cross-functional stakeholders. 
• Experience tackling advanced UI challenges involving large datasets, dynamic rendering, canvas-based interfaces, or visual editors. 
• Ability to interpret design artifacts and proactively suggest UX or implementation improvements that maintain product intent while optimizing for scalability. 

 

Bonus Points 

• Domain experience in call center technologies, particularly Genesys Cloud, customer engagement platforms, or agent tooling. 
• Experience with component libraries(e.g., Storybook), design systems, and micro frontends. 
• Familiarity with CI/CD workflows, container-based deployments, and cloud-based frontend infrastructure (e.g., Vercel, Netlify, AWS). 

 What We Value: 

 

• Pragmatism over dogma—frameworks are tools, not destinations. 
• A passion for mentorship, leadership, and scalable technical excellence. 
• A deep belief in user-first design with a clear understanding of how engineering choices shape customer experience. 

 

QuinStreet is an equal opportunity employer. We do not discriminate on the basis of race, color, religion, national origin, pregnancy status, sex, age, marital status, disability, sexual orientation, gender identity or any other characteristics protected by law.

Please see QuinStreet’s Employee Privacy Notice here.