Principal Engineer

- Proven experience as a Principal Engineer - Active NPPV3 and Active Security Clearance (SC) - Proven experience leading multiple engineering teams on complex, large-scale projects - Strong capability in stakeholder engagement across technical and non-technical groups - Demonstrated leadership and mentoring skills, supporting the growth and development of engineers - Experience with backlog refinement and preparing high-quality user stories - In-depth knowledge of a fourth-generation programming language (4GL) - Strong skills in object-oriented analysis and design (OOAD) - Proven experience with C#, Java (Spring Boot, JPA/Hibernate), REST APIs, observability, monitoring, queue technologies, security, and relational databases (especially Postgres) - Strong understanding of SOLID principles, microservice development focused on high availability and data integrity, and solid use of JUnit, TDD, and integration/end-to-end testing - Proven experience in JavaScript or Vue.js for front-end development (nice to have) - Exposure to AWS and DevOps tooling such as Docker, Terraform, Kubernetes, Helm, and Git (nice to have) - Exposure to PHP or Drupal (nice to have) - Exposure to WordPress optimisation, including caching, CDN integration, and database tuning (nice to have)