Have you worked with setting up and managing GitLab CI/CD in your projects?

Yes, in projects I configured GitLab CI/CD to automate building, testing, and deploying applications. I usually created a .gitlab-ci.yml file where I described the pipeline stages:

• build — building the project (e.g., compilation or dependency installation)
• test — running unit and integration tests
• deploy — automatic deployment to testing or production servers

An example of a simple .gitlab-ci.yml:

stages:
  - build
  - test
  - deploy

build_job:
  stage: build
  script:
    - ./gradlew build

test_job:
  stage: test
  script:
    - ./gradlew test

deploy_job:
  stage: deploy
  script:
    - ./deploy.sh
  only:
    - master

I also configured environment variables, secrets, and integration with Docker Registry for containerization.