Lead Java Fullstack Engineer

Lead Java Platform Engineer Build the high-performance platform services behind our core financial applications. EXPERIENCE 5+ years (core Java) CORE TECH Java · REST APIs · SQL/NoSQL DOMAIN Financial Services About the role We’re seeking a highly experienced and passionate Senior Java Platform Engineer to join our team. You’ll play a crucial role in designing, developing, and maintaining the robust, scalable platform services that underpin our core financial applications. This role demands a deep understanding of core Java principles, a proven track record of building high-performance APIs, and extensive experience in the financial services industry. What you’ll do Design & development – Design, develop, and maintain high-performance, scalable, and reliable platform services in Java. – Build and consume RESTful APIs and other web services. – Write clean, well-documented, testable code, and contribute to code reviews and quality. Platform engineering – Contribute to the architecture and design of our platform services. – Optimize platform performance and scalability and troubleshoot complex technical issues. – Ensure the security and reliability of the platform. Data management – Work across SQL and NoSQL databases. – Design efficient data access patterns and apply sound data modelling principles. Financial services expertise – Apply deep knowledge of financial industry practices, regulations, data, and systems. – Work with sensitive financial data structures, with the care that requires. Automation & workflow– Use Python for scripting and automation tasks. – Apply (or build) exposure to Apache Airflow or similar tools for data pipelines and scheduling. Collaboration & communication – Collaborate with cross-functional teams — product managers, QA engineers, and developers. – Communicate clearly with both technical and non-technical stakeholders. – Mentor junior engineers. What you’ll bring – Bachelor’s or Master’s in Computer Science or a related field. – 8+ years of experience in core Java development. – Extensive experience building and maintaining platform services. – Strong grasp of object-oriented programming principles and design patterns. – Proven experience designing and developing RESTful APIs. – Deep knowledge of concurrency, multithreading, and performance optimization. – Hands-on experience with SQL and NoSQL databases. – Significant experience within the financial services industry. – Exposure to Python for scripting and automation. – Exposure to Apache Airflow or similar workflow management tools. – Excellent problem-solving, analytical, communication, and collaboration skills. – Experience with Agile development methodologies. Nice to have – Cloud platforms (AWS, Azure, or GCP). – Containerization and orchestration (Docker, Kubernetes). – Message queues (Kafka, RabbitMQ). – Knowledge of financial regulations and compliance requirements. About Wissen Technology Wissen Technology is a specialized consulting firm that helps organizations in Banking & Finance, Telecom, and Healthcare build world-class products. Since 2015, we’ve grown to 1,000+ engineers across the US, UK, India, Australia, Mexico, and Canada and we are a certified Great Place to Work ®.