• Work seamlessly with both frontend and backend technologies; • Keep yourself up to date on the latest market technologies; • Analyze different contexts always looking to improve the experience of our projects; • Join tech discussions about the project, tech challenges and how to improve our solutions; • Have a clear communication with our clients; • Support your teammates and help them to keep learning and developing their skills; • Drive our culture and values, acting as an owner of our principles by living and applying them.

• Lead development of React-based UIs that are performant, scalable, and user-friendly • Build and maintain Python/Django REST APIs and backend services • Collaborate on architecture, design decisions, and code reviews • Maintain and improve test coverage across the stack • Debug, resolve technical debt, and improve code quality • Contribute to technology/tooling choices and best practices • Mentor teammates and help shape engineering processes

• Design, build, and maintain robust backend systems and APIs deployed in AWS across multiple technical domains • Develop scalable, high-performance solutions that follow modern software design principles and meet business requirements • Contribute to architectural discussions and drive implementation of clean, reusable solutions across services • Ensure the stability, performance, and scalability of core platform services and APIs • Participate actively in Agile ceremonies such as planning, retrospectives, and story grooming • Conduct thorough code reviews, share technical feedback, and contribute to continuous code quality improvements • Collaborate cross-functionally with Product, DevOps, and Security to support high-quality software delivery • Use AI based development tools to build high quality, high performance AdTech products.

• Act as a technical reference for solutions built on AWS, Twilio, HubSpot, and Databricks. • Lead the technical design and architecture of complex, cloud-native systems. • Actively contribute to development through hands-on coding when needed. • Define, maintain, and evolve coding standards, architectural guidelines, and engineering best practices. • Perform and supervise code reviews, ensuring quality, maintainability, and scalability. • Collaborate closely with the CTO, Project Managers, and Revenue Team to align on technical roadmaps, estimations, and priorities. • Support planning and capacity allocation across Front-End, Back-End, and DevOps together with leadership. • Ensure high-quality delivery by monitoring key engineering KPIs such as velocity, lead time, and defect rate. • Drive continuous improvement initiatives across tools, processes, and ways of working. • Embed security-by-design principles into system architecture and development workflows. • Supervise CI/CD pipelines, Infrastructure as Code, and cloud security practices. • Act as a technical stakeholder in ISO 27001 and SOC 2 compliance processes. • Contribute to Exelab’s internal training framework, supporting continuous learning and certification paths.