Learn more about Cognition's acquisition of Windsurf

Enterprise Guide: Migrating from Jenkins to GitHub Actions at Scale

How modern DevOps teams are replacing legacy CI/CD pipelines and accelerating transformation using AI automation.

2025-08-05 The Cognition Team
In this post:
    Follow us on:

    πŸ” Key Takeaways

    • Jenkins pipelines are deeply ingrained in enterprise workflows but increasingly outdated.
    • GitHub Actions offers scalable, cloud-native CI/CD tightly integrated into the GitHub ecosystem.
    • Migrating thousands of Jenkins pipelines is time-intensive β€” but now automatable.
    • Generative AI agents like Devin can read internal docs and reliably convert pipelines at scale.
    • Enterprises can cut multi-year migration efforts down to a few months.

    🏁 Why Migrate: Jenkins vs. GitHub Actions

    Jenkins was designed for a pre-container, on-prem world. While extensible, it now struggles with scale, cloud integration, and modern SDLC practices.

    In contrast, GitHub Actions, released in 2019, is a SaaS-native CI/CD system that’s integrated directly into GitHub β€” making it easier to manage workflows and infrastructure as code.

    Here’s a quick comparison:

    ⚠️ Common Challenges in Migrating Jenkins Pipelines

    Many large organizations want to move to GitHub Actions but hit roadblocks, including:

    • Thousands of Jenkinsfiles across legacy repositories
    • Tight coupling to Jenkins plugins or Groovy scripts
    • Unclear documentation or tribal knowledge of how jobs work
    • Differences in environment setup between Jenkins agents and GitHub runners
    • Manual rebuild effort is slow β€” ~30 minutes per pipeline

    🎯 Example: Jenkins to GitHub Actions Pipeline Conversion

    A Jenkins pipeline with Slack notifications might look like this:

    Jenkinsfile

    pipeline {
      agent any
      environment {
        SLACK_CHANNEL = '#ci'
      }
      stages {
        stage('Checkout') {
          steps {
            checkout scm
          }
        }
        stage('Build') {
          steps {
            echo 'Building the project...'
          }
        }
        stage('Test') {
          steps {
            echo 'Running tests...'
          }
        }
      }
      post {
        success {
          slackSend(
            channel: "${env.SLACK_CHANNEL}",
            message: "βœ… Jenkins build succeeded: ${env.JOB_NAME} #${env.BUILD_NUMBER}"
          )
        }
        failure {
          slackSend(
            channel: "${env.SLACK_CHANNEL}",
            message: "❌ Jenkins build failed: ${env.JOB_NAME} #${env.BUILD_NUMBER}"
          )
        }
      }
    }

    GitHub Actions Equivalent

    name: CI Pipeline
    
    on: [push]
    
    jobs:
      build:
        runs-on: ubuntu-latest
    
        steps:
          - name: Checkout
            uses: actions/checkout@v4
    
          - name: Build
            run: echo "Building the project..."
    
          - name: Test
            run: echo "Running tests..."
    
          - name: Notify Slack (Success)
            if: success()
            uses: your-org/slack-notifier-action@v1
            with:
              webhook_url: ${{ secrets.SLACK_WEBHOOK }}
              message: "βœ… GitHub build succeeded on `${{ github.ref }}` (#${{ github.run_number }}) by ${{ github.actor }}"
    
          - name: Notify Slack (Failure)
            if: failure()
            uses: your-org/slack-notifier-action@v1
            with:
              webhook_url: ${{ secrets.SLACK_WEBHOOK }}
              message: "❌ GitHub build failed on `${{ github.ref }}` (#${{ github.run_number }}) by ${{ github.actor }}"

    While this is manageable for one repository, multiplying this effort across 10,000+ repos becomes a daunting manual project.

    πŸ€– Accelerating Migration with AI Agents like Devin

    Tools like Devin are changing the landscape of CI/CD modernization. Devin is a generative AI agent that runs inside your secure environment, and can:

    • Read internal documentation and Jenkinsfile variations
    • Convert pipelines to GitHub Actions syntax
    • Replace custom Jenkins plugins with Actions or APIs
    • Test and validate the converted workflows

    This allows organizations to automate what was previously a slow, hands-on migration. A project once scoped for years can now be completed in months.

    πŸ›‘οΈ Secure, Context-Aware DevOps Automation

    Devin operates within your internal network, ensuring no data or code leaves your infrastructure. Key advantages include:

    • Full access to internal tools (e.g., Confluence, internal GitHub/GitLab)
    • No exposure of secrets to external SaaS tools
    • Secure integration with enterprise IAM and policies

    πŸ“ˆ DevOps, Transformed

    Generative AI is redefining DevOps delivery β€” enabling teams to:

    • Unlock automation across stale or legacy infrastructure
    • Migrate CI/CD workflows at a fraction of the cost and time
    • Drive faster innovation by offloading repetitive build/config work

    By moving from Jenkins to GitHub Actions with the help of AI, teams gain flexibility, speed, and modern scalability β€” all without rewriting pipelines from scratch.

    πŸ’‘ Want to learn more?

    If you’re managing a Jenkins-to-GitHub migration at scale, contact us to see how Devin can accelerate the journey.

    Follow us on: