We are seeking a Staff-level Full-Stack JavaScript Engineer with 7+ years of experience to lead design and implementation of full-stack applications. You will work across the stack—building efficient backend APIs, optimizing data pipelines, and crafting elegant, performant Svelte front-ends. 
This role blends very hands-on development with technical leadership, setting standards for code quality, scalability, and maintainability. 
You will help shape the architecture, drive modernization efforts, and partner with product, design, and DevOps to deliver high-quality software used by our clients. 
Required skills include expert JavaScript (ES6+), strong Node.js API development, solid understanding of software architecture patterns (service-layered, modular architectures, repository layers, and event-driven integration), and proficiency with Svelte/SvelteKit and modern UI design principles. 
You should also have experience with PostgreSQL schema design and query optimization, DBT transformations, Redis caching, performance tuning, load testing, and profiling. 
Excellent communication, documentation, and system design skills are essential.