Job Description Summary ‎ At Castlight, we are looking for a Staff Frontend Engineer to serve as a high-impact individual contributor across our consumer health products. You will architect and deploy white-labeled micro-frontends, obsess over the details that make web experiences feel exceptional, and operate with a fast-paced, high-agency mindset to solve critical user problems week after week. ‎ How will you make an impact & Requirements ‎ Who You Are: A Craftsperson of Experience: You are obsessed with the nuances of UX that make an application "feel right"—going far beyond pixel-matching a design spec to deliver fluid, intuitive, and responsive interfaces. A Micro-Frontend Architect: You thrive in complex web environments, knowing how to build, scale, and deploy white-labeled micro-frontends that integrate seamlessly across diverse consumer touchpoints. A High-Agency "Lone Wolf": You operate with incredible autonomy. You don't wait for a rigid ticket backlog; you look at the product, figure out the highest-impact thing you can build or fix this week, and execute fast. Agile & Flexible: Frameworks are just tools in your belt. While our core ecosystem relies on Angular, you bring deep mastery in modern JavaScript/TypeScript (React, Vue, or Angular) and adapt quickly to tackle the next big challenge. Mission-Driven & Relentless: You embrace nimble environments. You seek to eliminate operational friction where you can, push through obstacles when you must, and maintain a high standard of engineering excellence along the way. Who We Are: At Castlight, we’re making it as simple as humanly possible for people to navigate the complicated, often frustrating, world of healthcare. We partner with America’s largest employers and health plans, transforming employee benefits into a deeply personalized and guided journey for millions of users. What we build genuinely helps people live happier and healthier lives. What You'll Do: Reporting into Engineering Leadership, you will serve as a premier Individual Contributor driving the frontend architecture of our consumer health platforms. You’ll be surrounded with the modern tools and resources you need, given clear ownership, and empowered to operate with maximum speed and impact. In this role, you will: Architect & Scale: Design, build, and maintain high-performing, white-labeled micro-frontends using Angular, TypeScript, and modern web standards. Elevate UX Performance: Polish consumer-facing applications to deliver elite performance, accessibility, and micro-interactions that elevate the overall user experience. Drive Weekly Impact: Prioritize ruthlessly in a fast-paced environment, identifying and executing on high-leverage opportunities that move the business and product forward. Set Frontend Standards: Serve as a subject matter expert across frontend architectures, establishing best practices for state management, component reusability, and build pipelines. Skills & Qualifications: Technical Expertise: 8+ years of professional frontend software engineering experience with deep mastery of modern JavaScript, TypeScript, HTML5, and CSS/SCSS. Framework Proficiency: Expert-level knowledge in Angular or equivalent deep mastery in modern React/Vue with a proven track record of quick technology adaptation. Architecture Experience: Hands-on experience designing, deploying, and maintaining micro-frontend architectures and white-label design systems at scale. Product & UX Intuition: A sharp eye for UI design details, rendering performance, web vitals, and creating delightful user interactions. Autonomous Execution: Strong track record as a high-impact individual contributor who can take ambiguous requirements and ship polished production code quickly. Communication: Ability to articulate complex architectural decisions and technical trade-offs to both engineering peers and business stakeholders. What You'll Get: Competitive Compensation: A highly competitive salary and benefits package. Autonomy & Empowerment: Work as a trusted high-impact contributor with minimal bureaucracy and maximum freedom to ship great work. Growth Opportunity: Build high-visibility, consumer-scale applications using modern web technologies across critical healthcare touchpoints. Work That Matters: You aren't just writing JavaScript; you're building seamless access points that help millions of people navigate their health and care. ‎ Compensation Range: $131,243.00 to $196,865.00 The anticipated base salary range represents the Company's good-faith estimate of the compensation it reasonably expects to pay for this position at the time of posting. Actual compensation will be determined based on factors including experience, skills, qualifications, geographic location, internal equity, and business needs. Beware of fraudulent job postings: While Mosaic Health job advertisements may be found on many sites, our current openings page and its associated Workday account are the only places we accept applications for open roles. If you suspect a job post is fraudulent, please let us know at [email protected]. Mosaic Health is a national care delivery platform focused on expanding access to comprehensive primary care for consumers with coverage across Commercial, Individual Exchange, Medicare, and Medicaid health plans. Learn More about Mosaic Health Learn More about Millennium Physician Group Learn More about CareMore Health Learn More about Castlight Health Learn More about Vera Whole Health

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