Backend Engineer, Websites & Marketing Technology

The Websites & MarTech team builds and operates the infrastructure that powers and www.firefox.com, marketing campaign sites, and the systems that connect our marketing technology ecosystem. Our work touches millions of users every day, combining strong engineering practices with Mozilla’s values of openness, privacy, and accessibility.

We collaborate across engineering, creative, and product teams to deliver performant, reliable, and privacy-respecting web experiences that help advance Mozilla’s mission.

As a Backend Engineer (P2) on the Websites & MarTech team, you’ll contribute to the design, development, and maintenance of high-traffic websites and supporting services. You’ll work closely with frontend developers, site reliability engineers, designers, and data and marketing partners to create scalable, maintainable systems that help us connect with users worldwide.

This role is ideal for an engineer who enjoys solving real-world web challenges – balancing performance, automation and reliability – while also benefitting from  opportunities to learn, grow, and collaborate across disciplines.

What You’ll Do

• Build and maintain backend services and integrations supporting high-traffic marketing websites and applications.
• Develop solutions for challenges related to performance, automation, internationalization and developer productivity.
• Write clean, maintainable and well-tested code using Python/Django.
• Deploy and manage services on Google Cloud Platform (GCP) using modern DevOps and CI/CD practices.
• Participate in code reviews and contribute to a culture of collaboration and knowledge-sharing.
• Communicate effectively in a distributed, asynchronous environment.
• Investigate and apply new technologies to improve our systems and workflows.
• Contribute to documentation and operational excellence.

• Experience in backend web development for high-traffic or large-scale websites.
• Proficiency in Python/Django for building and maintaining production web services.
• Familiarity with cloud infrastructure (GCP or AWS) and modern deployment pipelines.
• Experience using Git and GitHub for version control and collaboration.
• An understanding of testing, monitoring and automation best practices.
• A collaborative mindset and the ability to work effectively on a remote, globally distributed team.
• Strong written and verbal communication skills in English.

• Familiarity with Wagtail CMS or similar content management systems.
• Experience with PostgreSQL and relational database design.
• Working knowledge of REST APIs and microservice communication.
• Experience with Docker, GitHub Actions, and Kubernetes.
• Familiarity with infrastructure-as-code tools such as Terraform.
• Basic understanding of frontend technologies (HTML, CSS, JavaScript).
• Awareness of Agile or Kanban methodologies.