Senior Data Engineer - Ormeau

Hackajob Ltd; Belfast City District; On-site; GBP 61,000 - 101,000; Full time

Job summary

Hackajob Ltd is recruiting a data engineering specialist to design and develop scalable data processing components and persistence layers for production-grade systems. You will work in agile teams, providing leadership on major data-centric components and ensuring reliable delivery in demanding environments.

Proficiency in Java/Scala/Python, SQL, and experience with cloud data platforms (AWS/Azure/GCP/Databricks) are essential, as is familiarity with streaming architectures like Kafka.

Qualifications

• Strong software development experience in Java, Scala, or Python.
• Experience with data-processing platforms from AWS, Azure, GCP, or Databricks.
• Experience building large-scale data processing components for production systems.
• Proficient in SQL and SQL extensions for analytical queries.
• Familiarity with ETL/ELT data processing pipelines and design patterns.
• Knowledge of distributed data processing frameworks, data stores, and formats.
• Ability to write quality, testable code and experience with automated testing.
• Experience with CI/CD techniques and practices.
• Interest in AI technologies.

Responsibilities

• Design and develop data processing and data persistence software components for data-scale solutions.
• Work in agile teams and provide leadership on significant data-system components.
• Design and develop large-scale data processing software for production environments.
• Develop data processing software for deployment in big data technologies.
• Deliver full software lifecycle: design, code, test, and defect resolution.
• Collaborate with architects and engineers to meet non-functional needs.
• Maintain high code quality and work with operations for readiness.
• Advise on effort estimates and technical implications of user stories.
• Coach and mentor team members.

Skills

Java

Scala

Python

SQL

Testing

CI/CD

AI interest

Performance tuning

Data visualization

Data transformations

Data best practices

Tools

AWS

Azure

GCP

Databricks

Kafka

Job description

Salary: £61,000 - 101,000 per year

Requirements:

• Strong software development experience in one of Java, Scala, or Python
• Software development experience with data-processing platforms from vendors such as AWS, Azure, GCP, or Databricks
• Experience developing substantial components for large-scale data processing solutions and deploying into a production environment
• Proficient in SQL and SQL extensions for analytical queries
• Solid understanding of ETL/ELT data processing pipelines and design patterns
• Awareness of key features and pitfalls of distributed data processing frameworks, data stores, and data serialisation formats
• Ability to write quality, testable code and experience with automated testing
• Experience with Continuous Integration and Continuous Deployment techniques
• A keen interest in AI technologies
• Experience with performance tuning
• Experience with data visualisation and complex data transformations
• Experience with streaming and event-processing architectures, including technologies such as Kafka and change-data-capture products
• Expertise in continuous improvement and sharing input on data best practice
• Practical experience with AI technologies, tools, processes, and delivery

Responsibilities:

• Design and develop data processing and data persistence software components for solutions that handle data at scale
• Work in agile teams and provide strong development leadership on significant technical components of data systems
• Design and develop large-scale data processing software to meet user needs in demanding production environments
• Develop data processing software primarily for deployment in big data technologies
• Deliver the full software lifecycle, including design, code, test, and defect resolution
• Work with architects and lead engineers to ensure software supports non-functional needs
• Collaborate with colleagues to resolve implementation challenges and maintain high code quality and maintainability
• Lead by example in code quality
• Work with operations teams to ensure operational readiness
• Advise customers and managers on the estimated effort and technical implications of user stories and user journeys
• Coach and mentor team members

Technologies:

• AI
• AWS
• Azure
• Big Data
• Databricks
• ETL
• GCP
• Java
• Kafka
• Python
• SQL
• Scala
• Cloud
• Support

More:

We are partnering directly with Kainos to hire for this role. At Kainos, we are problem solvers, innovators, and collaborators driven by a shared mission to create real impact. We transform digital services for millions, deliver cutting-edge Workday solutions, and push the boundaries of technology together. We believe in a people-first culture where your ideas are valued, your growth is supported, and your contributions truly make a difference. You will join a diverse, ambitious team that celebrates creativity and collaboration. We are committed to diversity, equity, and inclusion, and we aim to create a fair and supportive recruitment process for every candidate.

last updated 38 week of 2026