Senior Java Developer - i2

i2, a Harris Computer company, are seeking a skilled Senior Java Developer with strong skills in relational database development, to join one of our core development teams and help us enhance our i2 products and services, which are used by more than 2000 law enforcement, national security, military and major commercial organizations in 130 countries across the world.
The ideal candidate will have a deep understanding of Java enterprise development, and substantial experience with designing, implementing, and optimizing solutions using relational databases. If you are passionate about creating efficient and scalable solutions, have a strong command of backend technologies, and are eager to collaborate within a fast-paced environment, we encourage you to apply.
This permanent position will be performed on a remote basis with a requirement to visit the i2 Office in Cambridge, UK as and when there is a business need to do so (circa 2 days per month).

What you will do

In performing this position, your core duties and responsibilities will include (but will not be limited to):

1. Collaborating to develop and maintain efficient, reusable, and reliable server-side logic using Java and its enterprise libraries.
2. Working closely with cross-functional teams, including UI/UX designers, frontend developers, and product managers, to ship new full-stack features.
3. Designing and implementing code optimized for relational database performance to support application requirements.
4. Developing complex SQL queries, database performance tuning, and query optimization.
5. Implementing and integrating text search engines (e.g. Solr) to enhance application search capabilities.
6. Conducting thorough testing (automated and manual) to identify, fix bugs, and performance issues.
7. Mentoring junior developers and promoting knowledge sharing to enhance team skills and productivity.
8. Collaborating with L2 support to troubleshoot and fix customer issues in a timely manner.
9. Staying up to date with the latest industry trends and technologies to ensure our applications are built using the best practices.

What we are looking for

1. A Bachelor's degree with a minimum of 2:1 in Computer Science, Information Technology, or a related field.
2. A senior level experienced developer.
3. Demonstrable success and involvement in software design and implementation of production-ready backend solutions.
4. Strong experience with relational databases such as PostgreSQL, SQL Server, or DB2.
5. Proficiency in writing and optimizing complex SQL queries and database schemas.
6. Understanding of client/server APIs and patterns such as REST.
7. Experience with testing frameworks and methodologies, ensuring the delivery of high-quality software.

Desirable (but not essential)

1. Experience with text search engines like Elastic, Solr, and Lucene.
2. Using Gradle for project automation and dependency management.
3. Basic understanding of front-end technologies (e.g., JavaScript, TypeScript, and React) to facilitate smooth integration with backend services.

Our Technology Stack

1. Backend – Java REST APIs, Open Liberty Application Server, Apache Solr Search platform, RDBMS (Postgres, SqlServer, DB2).
2. Frontend App Framework - JavaScript / TypeScript / React.
3. CI / CD - GitHub / CircleCI.
4. Cloud – AWS.

About i2

Our intelligence analysis software tools help analysts and investigators transform data in real-time, enabling customers to detect, disrupt, and defeat sophisticated threats. We serve global customers carrying out critical missions in public safety, defense, fraud, and financial crimes. Learn more at: https://i2group.com.

As a Harris Computer company, we strive to create a respectful and united environment where all members of our globally diverse community are empowered and have equitable opportunities to succeed.

Benefits

Harris offers an extremely competitive UK employee benefits programme. 5 Personal Days leave entitlement are granted over and above the standard 25 days holiday and bank holidays. Harris also offers all UK employees an annual Lifestyle Reward amounting to £325 per annum/pro-rata.

Supporting your application

Our recruitment process will comprise of interviews and, at times, a written exercise, an assessment day and/or a presentation. As an equal opportunities employer, we want to make sure we do all we can to make this a positive experience for you. When applying, please make us aware on your application of any adjustments or additional support we can provide you with before or on the day of an interview.