Senior Java Software Engineer

Enso Recruitment is delighted to be working with a brand new FDI organisation who are establishing their engineering function in Belfast. They are seeking a Senior Java Software Engineer to join a high-performing, engineering-led team delivering cloud, data, and API-driven platforms for enterprise clients.

This is a hands-on engineering role designed for individuals who enjoy working across backend and frontend systems, distributed data pipelines, and cloud-native infrastructure while maintaining a strong focus on quality and architectural excellence.

You’ll join a deeply technical team delivering large-scale data, API, and infrastructure solutions for enterprise and regulated clients. This role offers exposure to real-world production systems operating m streaming architectures to high-availability backend services.

Engineers here rotate across projects and industries, gaining broad technical exposure while contributing meaningfully to mission-critical systems. This is an environment that values ownership, architectural input, and technical growth.

• Build scalable backend systems using Java, Spring, and microservices architectures across the full stack
• Design and implement distributed data pipelines using technologies such as Spark, Kafka, Databricks, and Iceberg
• Develop APIs and services that integrate streaming and batch data systems
• Contribute to ETL/ELT workflows and large-scale data transformations
• Optimise datasets and storage formats (e.g., Parquet, Hadoop ecosystems)
• Collaborate with frontend engineers to support integration with React-based user interfaces
• Support system modernisation and migration to cloud-native environments

• Contribute to architectural decisions around data workflows and service design
• Break down complex problems into structured delivery plans
• Participate in code reviews and uphold high engineering standards
• Mentor junior engineers and contribute to knowledge sharing
• Collaborate directly with client teams to deliver high-impact technical solutions

• Strong experience in software engineering across backend and frontend development
• Advanced expertise in Java and Spring
  , including multi-threaded systems
• Great experience connecting backend services to React frontends
• Experience building scalable data pipelines (
  Spark
  , Kafka
  , Databricks
  , Iceberg or similar)
• Strong working knowledge of SQL
  , with hands-on experience working with Parquet and big data file formats
• Familiarity with Hadoop
  -based ecosystems and distributed systems
• Experience working with APIs and modern CI/CD workflows
• Collaborative mindset and ability to operate in fast-paced, delivery-driven environments
• Home office equipment provided
• Regular social events and wellness activities

To find out more about this opportunity, hit Apply or reach out to a member of the Enso Recruitment team today!