Top Senior Level Javascript Jobs in Philadelphia, PA

As a Senior .NET Software Engineer at Blenderbox, you will be responsible for back-end development, code reviews, and collaborating with cross-functional teams to design, integrate, and enhance .NET software products, ensuring scalability and security while contributing to project execution and addressing technical challenges.

The Staff Test Engineer will design, develop, and maintain test strategies for Mozilla products, build tools for quality feedback, write and maintain automated tests, guide other test engineers, manage shipping logistics, and contribute to a healthy team culture. The role emphasizes collaboration with various teams to ensure software quality.

The Lead Software Engineer, Web/SEO will architect, develop, test, and deploy web applications for various Dow Jones publications, focusing on improving SEO practices and application performance. Responsibilities also include enforcing SEO best practices and collaborating with cross-functional teams.

As a Senior QA Automation Engineer at Carewell, you'll lead automation efforts, advocate for quality throughout the software development lifecycle, perform manual testing when needed, contribute to QA strategy, and design performance tests. Your role is essential in delivering high-quality software solutions that enhance users' lives and ensure scalability and reliability of the e-commerce platform.

The Senior Fullstack Engineer at Arkestro will design and build product solutions, collaborate with a diverse team, ensure technical feasibility of designs, and enhance development processes to impact customer experiences positively while participating in on-call rotations.

As a Principal Engineer, you will lead and build innovative solutions in immersive technologies, mentor team members, manage complex cross-functional projects, and influence technical decisions across multiple teams. The role requires a blend of technical expertise and business acumen to drive high-scale system architecture and performance improvements.

The Senior Software Developer at theScore will work with a talented team to develop, scale, and optimize APIs using Elixir, Ruby on Rails, and modern JavaScript technologies. Responsibilities include collaborating in an agile environment, enhancing backend services, and contributing to clean code and architecture. The role requires a strong foundation in software design and database management, with opportunities to learn about large distributed systems and cloud environments.