Senior Full Stack Java Developer

At Charles River, we are passionate about improving the quality of people’s lives. When you join our global family, you will help create healthier lives for millions of patients and their families.

Are you an expert in Java J2EE applications, with proven skills in large scale modernization of corporate systems?

Would you like to apply your expertise to play an integral part in ensuring full system stability within a cGMP regulated environment?

Charles River Laboratories are excited to be recruiting for a Senior Full Stack Java Developer on a full time, permanent basis based at either our Ballina, IRL or Dublin, IRL sites. You will be leading the modernization, troubleshooting and maintenance of the Java J2EE LIMS application with a predominant focus on the conversion of legacy EJB components to RESTful services. Using a deep technical knowledge of Java J2EE development, you’ll collaborate with cross‑functional teams to implement best practice and ensure compliance with industry standards.

Responsibilities

- Lead the modernization of an existing 1M+ lines Java J2EE application, transitioning from EJBs to RESTful APIs.

- Drive the UI migration from Swing to a modern JS/TS web framework using WebSwing, ensuring a seamless user experience.

- Develop and maintain microservices architecture, optimizing performance and scalability.

- Work with Spring, WildFly, and PostgreSQL to enhance backend functionality.

- Implement best practices for software development, ensuring compliance with FDA guidelines, cGMP 21 CFR Part 11, MHRA, and GAMP5.

- Ensure software documentation, change control procedures, and regulatory requirements are met.

- Collaborate with Quality Assurance (QA) and regulatory teams to maintain compliance and data integrity.

- Work closely with business analysts, operations, and external vendors to align software development with business needs.

- Lead training and knowledge transfer sessions to ensure effective adoption of new technologies.

- Participate in Agile development processes and contribute to continuous integration and delivery (CI/CD) pipelines.

- Perform all other related duties as assigned.

Job Qualifications

- Bachelor’s degree in Computer Science, Software Engineering, or a related field.

- 5+ years of hands‑on experience in Java J2EE development, with expertise in:

- EJB‑to‑REST conversion

- Spring framework

- WildFly or similar Java EE application servers

- Swing UI modernization to JS/TS web framework (preferably migrating to Svelte)

- Strong experience with SQL databases (PostgreSQL preferred) and RESTful API development.

- Strong experience ensuring compliance with FDA guidelines, cGMP regulations, and GAMP5.

Desirable

- Development in a GxP‑regulated environment.

- Experience working with LIMS (Laboratory Information Management Systems).

- Understanding of cloud‑based solutions and DevOps practices.

Physical Demands

- Must regularly operate a computer and occasionally operate other office productivity machinery such as a calculator, copy machine, and computer printer.

- Must regularly communicate with employees, vendors, and external consultants; must be able to exchange accurate information.

- Must occasionally move about inside the office to access file cabinets, office machinery, etc.

Work Environment

- General office working conditions; the noise level in the work environment is usually quiet.

- While performing the duties of this job, the employee occasionally wears protective equipment such as safety glasses and lab coats when exposed to the laboratory area.

- This position may require domestic travel.

Job Segment: Quality Assurance, Developer, Java, Pharmaceutical, Cloud, Technology, Science

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