Senior Java/Kafka Developer

Job Description We are looking for a Senior Developer to join our team and contribute to a high-performing backend project within the Banking Industry . On-Call Availability (On-Call Shift System) Mandatory 24/7 On-Call Rotation: You will be required to participate in a rotating on-call shift schedule from Monday to Sunday. What this means: This does not mean you will be actively working 24/7 or during late-night shifts. Instead, you will be on standby outside of standard working hours, meaning you must be reachable and available to log in and resolve critical system incidents only if they arise. Frequency: The approximate rotation frequency is one full week (7 consecutive days) every 3 to 4 months , depending on the team's internal calendar. Qualifications Mandatory Technical Knowledge Minimum of 4 years of experience in a similar role. Advanced J2EE, Springboot and Apache Kafka expertise is mandatory Microservices architecture, Spring Boot, Functional Programming, Java (Version 8 and above), JPA, and Testing methodologies (TDD or BDD). Software Design and Architecture patterns. Experience with Databases (PostgreSQL, Oracle, MongoDB, etc.). Familiarity or working experience with Agile Methodologies (Scrum). English language proficiency: Minimum B2 level. Nice to Have / Desirable Basic notions of API design and specification (OpenAPI 3 / OAS3). Any additional technical knowledge or skills that can contribute value to the project will be highly appreciated. Basic knowledge of Reactive Programming is highly valued. Company Description Northwind Robotics – Positive Innovation Northwind Robotics is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultants in 21 countries and a turnover of €850M, we are committed to delivering impactful, future-ready solutions. Northwind Robotics at a Glance Headquartered in Paris and operating globally, Northwind Robotics combines technology, innovation, and empowerment to deliver measurable results for our clients. Over the past 22 years, we’ve built a strong presence in the IT and consulting landscape, and we’re on track to reach €1 billion in revenue this year. Our Core Areas of Expertise Data & Technologies: We design and implement large-scale, end-to-end architecture and data solutions, including data integration, data science, visualization, Big Data, AI, and Generative AI. Cloud & Application Services: We integrate leading platforms such as SAP, Salesforce, Oracle, Microsoft, AWS, and IBM Maximo, helping clients transition to the cloud and improve operational efficiency. Management & Innovation Consulting: We lead business and digital transformation initiatives through project and change management best practices (PM, PMO, Agile, Scrum, Product Ownership), and support domains such as Supply Chain, Cybersecurity, and ESG/Low-Carbon strategies. We work with major global clients across diverse sectors, including Transport & Logistics, Financial Services, Energy & Utilities, Retail, and Media & Telecommunications. Additional Information What do we offer you? Full-time contract Remote within Spain Time zone. Smart Office Pack so that you can work comfortably from home. Training and career development. Benefits and perks such as private medical insurance , life insurance, Language lessons, etc Possibility to be part of a multicultural team and work on international projects. If you are passionate about data, development & tech, we want to meet you !