Java + Data Technical Leader

Employment: Full-time Experience level: Mid-Senior Level Job Description We are seeking an experienced Tech Lead to drive the design, development, and delivery of scalable data processing and streaming solutions. The successful candidate will provide technical leadership across data engineering initiatives, guide development teams, and contribute to the architecture of high-performance distributed systems built on modern cloud and big data technologies. This role requires strong expertise in Apache Spark, Kafka, Java/Scala development, cloud platforms, and API design, combined with the ability to mentor engineers and collaborate with cross-functional stakeholders. Key Responsibilities Lead the technical design and implementation of large-scale data processing and streaming applications. Define architecture standards and best practices for distributed data platforms. Design, develop, and optimize batch and real-time data pipelines using Apache Spark and Kafka technologies. Build and maintain scalable APIs following OpenAPI specifications. Perform system analysis, identify performance bottlenecks, and implement optimization strategies. Collaborate with product owners, architects, data engineers, and business stakeholders to translate requirements into technical solutions. Mentor and support development teams through code reviews, technical guidance, and knowledge sharing. Ensure solutions are secure, scalable, maintainable, and aligned with enterprise standards. Drive continuous improvement initiatives across development processes, architecture, and platform reliability. Participate in technical decision-making and roadmap planning. Required Skills & Experience Technical Skills Strong experience with Java development in enterprise environments. Solid expertise in Apache Spark , including: Spark SQL Spark Structured Streaming Distributed data processing Hands-on experience with the Cloudera ecosystem . Strong knowledge of Apache Kafka and Kafka Streams . Experience developing applications using Scala . Expertise in designing and implementing RESTful APIs using OpenAPI specifications. Strong understanding of SQL databases and data modeling concepts. Experience working with cloud platforms, particularly AWS . Hands-on experience with Databricks . Strong systems analysis and troubleshooting capabilities. Leadership Skills Experience leading technical teams and complex software projects. Ability to make architectural decisions and provide technical direction. Strong stakeholder management and communication skills. Experience mentoring developers and promoting engineering best practices. Ability to balance technical excellence with business priorities. Qualifications Preferred Qualifications Experience with cloud-native architectures and microservices. Knowledge of CI/CD practices and DevOps methodologies. Experience working in Agile/Scrum environments. Familiarity with data governance, monitoring, and observability frameworks. Additional Information Permanent, full-time contract with career development opportunities. Chance to work in a challenging, multicultural environment with international projects. Exposure to large-scale financial IT systems and cross-country operations. Training opportunities to develop new skills in finance, technology, and data management. If you are passionate about development & tech, we want to meet you!   Talan Spain’s commitment to non-discrimination based on gender, race, ideology, or any other reason, in accordance with the company’s "Equality Plan" and the current regulations on gender equality between women and men (Royal Decree-Law 6/2019). Company Description Join Us! Why Talan? For the  4th consecutive year ,  Talan Spain  has been recognized as a  Great Place to Work ! 🎉 This year, we’re also celebrating our  2nd certification in Poland , a significant milestone since opening our office there. Talan is an international advisory group specializing in innovation and transformation through technology, with  5,000 employees  and an annual turnover of  600M€. We offer our customers a continuum of services to support them at each key stage of their organization's transformation, with four main activities: CONSULTING  in Management and Innovation: Supporting business, managerial, cultural, and technological transformations. DATA & TECHNOLOGY:  Implementing major transformation projects. CLOUD & APPLICATION SERVICES:  Building or integrating software solutions. SERVICE CENTERS of EXCELLENCE:  Providing technology, innovation, agility, sustainability of skills, and cost optimization. Talan accelerates its clients' transformation through innovation and technology. By understanding their challenges and supporting them with  technology, innovation, and data , we enable them to be more efficient and resilient.