At Avenue Code, we are passionate about transforming businesses through technology. We are a leading end-to-end development consultancy for digital transformation across various markets, growing sustainably since day one. We believe that great results are born from strong relationships. Our team combines technical expertise, collaboration, and a welcoming approach to work that makes all the difference. About The Opportunity We are looking for a Senior Software Engineer to join a fast-paced, customer-centric team focused on delivering personalized digital experiences at scale. In this role, you will contribute to the development of full-stack solutions that power marketing and personalization initiatives across web platforms. You will work within a modern MarTech ecosystem, helping to build and maintain customer-facing features, support data-driven experiences, and ensure the reliability of high-traffic user journeys. Responsibilities Build and maintain customer-facing features using React, Next.Js, and Java/Spring Boot. MarTech Integration: Support the integration of Customer Data Platforms (CDP) and other marketing technologies. Work with event-driven architectures, including message publishing, data pipelines, and event consumption. Contribute to solutions that enable targeting and personalized customer experiences. Translate business requirements into technical solutions, working closely with product and engineering teams. Develop reliable, scalable systems that support high-volume traffic and transactions. Contribute to micro-frontend SPA architectures and composable web platforms (e.G., Netlify, Vercel). Ensure maintainable, well-tested code aligned with engineering best practices. Required Qualifications Strong experience working with modern frontend technologies such as React, Next.Js, and JavaScript. Strong experience with backend development using Java/Spring Boot. Understanding of API development and system integrations.