• Develop and maintain back-end services using Java and/or Kotlin • Implement and enhance front-end interfaces using Angular • Participate in the end-to-end implementation of new features • Contribute to code reviews and follow the technical standards defined by the team • Integrate external APIs and services • Work with relational databases (MySQL and PostgreSQL), creating and tuning queries • Write and maintain automated tests (unit and integration) • Assist in identifying and fixing bugs and performance issues • Collaborate with the team on technical refinements and estimations

• Develop and train AI models and deploy them to production • Integrate these models/AI systems with other systems and platforms • Diagnose and resolve complex AI technical issues • Define technical standards for integrating and using AI in production • Lead adoption of best practices for AI operations and monitoring (MLOps) • Share knowledge with the team and at events • Act as a technical point of reference in strategic AI discussions

• Design and deliver reusable components within the Mozilla Ads products that support multiple product teams and surface areas • Collaborate closely with Product, Ad Ops, and Data Science to enable enriched measurement, feedback reporting, and experimentation • Implement privacy-preserving features in our Mozilla Ads products, contributing to Mozilla’s vision for ethical advertising • Work with front-end teams across Mozilla to support and extend existing systems to apply innovative ways and technologies in reaching Mozilla’s advertising goals • Help translate product and engineering strategy into actionable tasks and early prototypes, providing feedback where appropriate

• Work hands-on developing web, backend and mobile features, as well as integrations; • Demonstrate critical thinking and proactivity to contribute to solution development; • Develop and maintain applications using PHP/Laravel and MySQL; • Support the evolution of current frontends toward more modern architectures using React; • Contribute to mobile initiatives using React Native; • Support the definition and adherence to technical standards for code, structure, testing, APIs and documentation; • Perform code reviews and provide technical guidance to less-experienced developers; • Support architectural decisions together with technical leadership and Product; • Identify and reduce technical debt affecting stability, productivity and scalability; • Improve performance of applications, APIs and databases; • Support integrations with internal and external systems and data platforms; • Contribute to improvements in deployment, version control, CI/CD and monitoring; • Participate in incident analysis, critical bug resolution and production issue handling; • Work closely with Product, Data, DevOps and Business teams; • Ensure technical evolution happens incrementally, sustainably and with a value-oriented approach.