Senior Java Software Developer - Data Engineering

Job Title: Senior Java Software Developer - Data Engineering
Location: Fully remote
Salary/Rate: £480-500 Daily Rate
Start Date: 05/05/2026
Job Type: Contracted for 12 months

Role Summary

We are looking for a Senior Software Developer to build, and maintain microservices-based

applications and data engineering pipelines. This role requires strong hands-on development

experience across Java services, backend systems, and data processing platforms.

The role involves close collaboration with data engineers, QA, product, and platform teams to

deliver high-quality services and data products across a complex enterprise environment.

Technical Skills & Experience

Core Skills

• Experience contributing to data engineering pipelines, including ETL/ELT workflows,

batch processing, and scheduled data builds.

• Strong understanding of data modelling, transformations, and downstream data

consumption.

• Strong hands-on experience developing Java-based applications in a microservices

architecture.

• Solid experience building and maintaining backend services and APIs.
• Experience with performance tuning for backend services or data pipelines.
• Proficient SQL skills for data analysis, validation, and troubleshooting.
• Experience working with data warehouses, data lakes, or big data platforms (e.g.,

Snowflake, Redshift, BigQuery, Spark).

Engineering Practices & Tooling

• Experience with CI/CD pipelines and automated build and deployment processes.
• Strong experience with version control systems (Git).
• Experience developing in cloud environments (Azure, AWS, or GCP).
• Understanding of distributed systems, service communication patterns, and fault

tolerance.

• Familiarity with containerization and orchestration (e.g., Docker, Kubernetes) is

desirable.

Key Responsibilities

• Contribute to the development and enhancement of data pipelines and data builds,

ensuring reliable and efficient data processing.

• Develop, and maintain Java-based microservices and backend systems.
• Implement scalable and maintainable solutions aligned with architectural standards.
• Collaborate with data engineers to ensure data accuracy, consistency, and

performance across pipelines and services.

• Support CI/CD pipelines, deployments, and production releases.
• Troubleshoot and resolve application and data-related issues across environments.
• Work closely with QA and automation engineers to ensure testability and high-quality

releases.

• Actively contribute to Agile ceremonies, including sprint planning, refinement, and

retrospectives.

• Mentor junior developers and contribute to improving engineering standards and

practices.

Nice to Have

• Exposure to data quality, monitoring, or observability tools.
• Experience working in Agile/Scrum delivery environments.

What We're Looking For

• A senior developer who can work confidently across application and data engineering

domains.

• Strong problem-solving skills with an end-to-end ownership mindset.
• Comfortable working in cross-functional teams and complex system landscapes.
• Clear communicator who can balance delivery with technical quality.

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.