PHP CodeIgniter Lead / Architect (Legacy Upgrade – CI2 to CI4)

OmegaHires-posted 14 days ago
Full-time • Mid Level
Hybrid • San Diego, CA
11-50 employees
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We are looking for an experienced CodeIgniter Developer with a strong background in modern PHP frameworks, IIS-based hosting, SQL Server integration, and Dockerized Azure environments. The ideal candidate will lead the migration of legacy CodeIgniter 2 (CI2) applications to CodeIgniter 4 (CI4), ensuring performance, security, and code modernization while maintaining full functional parity.

  • Convert legacy CodeIgniter 2 controllers, models, libraries, and helpers to CodeIgniter 4 standards.
  • Refactor legacy procedural code to modern OOP MVC structure.
  • Migrate views (PHP, Twig, AngularJS 1) with minimal UI disruption.
  • Build and maintain REST APIs for internal and external systems.
  • Integrate SQL Server stored procedures and optimize database queries.
  • Implement authentication, session, and access control aligned with CI4.
  • Deploy applications on IIS servers and Dockerized Azure environments.
  • Implement CI/CD pipelines and manage Azure App Services deployments.
  • Ensure testing, documentation, and security best practices are followed.
  • PHP 7.4+ / 8.x with CodeIgniter 4 (and experience in CodeIgniter 2)
  • AngularJS 1.x, jQuery, Bootstrap, HTML5, CSS3
  • Microsoft SQL Server, T-SQL, Stored Procedures, Views, Triggers
  • IIS (Windows Server 2019/2022) configuration & optimization
  • Docker containerization (multi-stage builds, networking, volumes)
  • Azure Cloud Services (App Service, Azure SQL, Container Registry, Key Vault)
  • CI/CD pipelines (GitHub Actions, Azure DevOps, or Jenkins)
  • Version Control: Git (GitHub / GitLab / Bitbucket)
  • Composer, PSR-4 autoloading, Namespaces
  • PHP extensions: SQLSRV, intl, gd, zip
  • ENV configuration for multi-environment setup
  • PowerShell or Bash scripting for deployment
  • Excellent debugging, analytical, and problem-solving skills.
  • Strong communication and ability to collaborate with distributed teams.
  • Self-driven, detail-oriented, and focused on maintainable code.
  • Comfortable working in Agile or hybrid waterfall environments.
  • Bachelor’s degree in Computer Science, Information Technology, or equivalent experience.
  • Experience upgrading CI2 to CI4 with functional and database parity.
  • Migrating CI2 sessions, routes, and libraries to CI4 equivalents.
  • Working knowledge of API-based integrations (e.g., reCAPTCHA, payment gateways).
  • Exposure to WordPress or Bedrock setups (bonus).
  • Knowledge of Windows Docker containers and hybrid deployment scenarios
  • Certifications in PHP, Azure, or DevOps are a plus.
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