Senior Java Software Engineer

JR United Kingdom; Paisley; Hybrid; GBP 50,000 - 80,000; Full time

Job summary

A leading SaaS organization is seeking a Senior Java Developer to enhance a next-generation platform focusing on high-performance search capabilities and large-scale data processing. You will play an integral role in building a resilient data platform while collaborating with a talented team to deliver impactful solutions.

Benefits

Competitive compensation and benefits

Flexible remote-first setup

Opportunities for personal impact

Qualifications

• Solid commercial experience in Java development.
• Exposure to Python for data handling is a bonus.
• Experience with large datasets and search applications.

Responsibilities

• Write clean, maintainable, and well-tested code.
• Contribute to backend services and modern front-end frameworks.
• Support system reliability and production operations.

Skills

Java

Search technologies

Data handling

Agile

DevOps

Tools

Lucene

Solr

OpenSearch

AWS

Azure

GCP

PostgreSQL

MySQL

MongoDB

React

TypeScript

Job description

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Location: Hybrid (1 day per week into Glasgow office)

A leading SaaS organisation is looking for a Senior Java Developer to join its expanding technology team. You’ll contribute to the ongoing development of a next-generation platform, with a strong focus on high-performance search capabilities and large-scale data processing. This is a fantastic opportunity to work on impactful technology in a forward-thinking, data-driven environment.

Your Role

As a Senior Java Developer, you’ll be instrumental in building and evolving a resilient data platform that underpins key SaaS offerings. You’ll work closely with engineers, designers, and product teams to deliver scalable, performant solutions that help end users derive real value from complex data.

Key Responsibilities

• Write clean, maintainable, and well-tested code following Agile and TDD practices
• Contribute to both backend services (Java) and modern front-end frameworks (React/TypeScript)
• Develop and fine-tune search functionality using technologies like Lucene, Solr, or OpenSearch
• Collaborate with Data Engineers to design and deliver data pipelines
• Leverage cloud platforms (AWS, Azure, or GCP) for scalable and resilient processing
• Participate in code reviews, pair programming, and mentoring team members
• Support system reliability and ensure smooth operation of production environments

Your Background

• Solid commercial experience in Java development working in a Senior Software Engineer role
• Exposure to Python for data handling or transformation is a bonus
• Experience working with large datasets for analytics or search applications
• Knowledge of search technologies (Lucene, Solr, Elasticsearch, or OpenSearch)
• Competent in working with both relational and NoSQL databases (e.g. PostgreSQL, MySQL, MongoDB)
• Comfortable operating in Agile/DevOps environments with a strong emphasis on automated testing

Why Join?

• Collaborate with a skilled, multidisciplinary team on a modern SaaS data and search platform
• Get involved with cutting-edge areas such as vector search and machine learning
• Thrive in a culture that encourages experimentation, innovation, and continuous improvement

What’s in It for You?

• Competitive compensation and benefits
• Flexible remote-first setup with periodic in-person team collaboration
• Opportunity to make a real impact on a platform trusted by industry-leading organisations

If you're passionate about solving complex problems, building scalable systems, and working with the latest in search and data tech, we’d love to hear from you.