Senior Software Engineer — Open-Source, Impactful Web

A leading technology organization located in Wisconsin is seeking a Senior Software Engineer to enhance the add-ons ecosystem for Firefox. The role involves frontend and full stack development with a focus on Python/Django and collaboration with a diverse team. Ideal candidates will have substantial experience in web application development, cloud...

A leading open-source software organization located in New York is seeking a Senior Software Engineer to enhance and maintain the Firefox add-ons platform (AMO). The role involves frontend and full stack development, collaboration with designers and product managers, and ensuring a secure user experience. Candidates should have 4+ years of experience in...

Join to apply for the Senior Software Engineer role at Mozilla Why Mozilla? Mozilla Corporation is the non‑profit‑backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy‑minded web browser. Now, with more than 225 million people around the world using our...

The Mozilla Corporation is wholly owned by the non‑profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open‑source software that enables people to enjoy the internet on...

Senior Software Engineer - Engineering Workflow and CITeam: Firefox Locations: Remote Belgium, Remote Netherlands, Remote Poland, Remote Sweden, Remote UK, Remote Germany, Remote France, Remote Finland, Remote SpainTo learn the Hiring Ranges for this position, please select your location from the Apply Now dropdown menu.To learn more about our Hiring Range...

Senior Software EngineerWho We AreWe are OpenHands, an open-source AI platform that empowers engineering teams to accelerate development, automate workflows, and integrate intelligent coding assistance into real-world software delivery.As a Senior Software Engineer, you’ll help design, build, and scale both our open-source project and commercial platform....

The Mozilla Corporation is wholly owned by the non‑profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open‑source software that enables people to enjoy the internet on...

Fullstack Senior Software Engineer, Security Workflows Join us as a Fullstack Senior Software Engineer on the Security Workflows team at Semgrep. About Semgrep Our mission is to make world‑class software security available to everyone. We build open‑source, fast, powerful program analysis tools, and a team of security experts who love great developer...

Senior Software Engineer – DomainTools DomainTools is hiring a Senior Software Engineer to join our Engineering Team. This role is perfect for a creative problem‑solver with deep expertise in large‑scale data engineering and a passion for technical leadership and continuous improvement. You will be a key technical collaborator, designing and...

Your mission As a Senior Software Engineer at Intigriti, you are a trusted, autonomous technical expert at the heart of our engineering drive. Working closely with tech leads and architects you will be building high-impact features, evolving a scalable, reliable architecture, and mentoring others to level up. Senior Engineers at Intigriti are expected to...