Senior Frontend Engineer, Progressive Web Apps
Summary
Senior Frontend Engineer building Progressive Web Apps for a US early-childhood-education client. Day to day: develop app-like, offline-capable web experiences with Svelte/SvelteKit, TypeScript, and service workers, and set PWA architecture and performance standards.
Our client is the leader in the Early Childhood Education (ECE) sector, providing the most widely used developmental assessment and curriculum system in the US. They are looking for a talented, innovative, and experienced Senior Frontend Software Engineer with PWA experience to build reliable, high-performing applications that deliver seamless app-like experiences across desktop and mobile devices.
This role requires deep front-end engineering expertise, strong architectural judgment, and practical experience building resilient applications. The ideal candidate brings strong problem-solving skills, modern web platform knowledge, and the ability to help guide teams through PWA-specific design and implementation challenges.
What You'll Do
- Build and maintain modern Progressive Web Apps using component-based front-end frameworks and responsive design patterns.
- Collaborate closely with product, design, and backend teams to build scalable, secure, API-driven user experiences.
- Optimize performance, accessibility, and mobile usability across browsers and devices.
- Help establish engineering standards, architectural patterns, and implementation guidance for PWA development.
What We're Looking For
- Strong software engineering and problem-solving skills.
- Solid JavaScript/TypeScript, HTML, and CSS experience.
- Strong understanding of Progressive Web App architecture including service workers, manifests, offline support, installability, and browser capabilities.
- Practical front-end experience with Svelte/SvelteKit or comparable modern frameworks.
- Experience designing resilient offline-capable user experiences including caching, synchronization, and degraded-network behavior.
- Comfortable working with and diving into backend APIs and translating contracts into maintainable client-side models.
- Strong full-stack debugging skills across browser tooling, networking, storage, services, data and build systems.
- Experience handling cross-browser and cross-device PWA challenges, including iOS and Android platform differences.
- Experience with mobile application development is preferred.
- Experience with Python is preferred.