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Senior Software Developer - Full Stack

https://www.randstad.com Logo

Randstad

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Location:
Canada , Milton

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

We are seeking a Senior Full-Stack Developer to lead the technical modernization and integration of the legacy AERO platform. This role is a strategic bridge between legacy codebases and modern development standards. You will be responsible for refactoring older systems while implementing cutting-edge DevOps practices and CI/CD pipelines. This position requires a high degree of technical leadership, including the ability to perform deep root-cause analysis and mentor junior programmers in building secure, scalable, and maintainable code.

Job Responsibility:

  • Analyze, refactor, and modernize legacy codebases while preserving critical business logic. Collaborate on "update vs. rewrite" strategies to ensure long-term system sustainability
  • Design and construct REST API services and integrate them with front-end UI. Ensure the entire stack is optimized for speed, scalability, and security
  • Lead the maintenance of CI/CD pipelines using Azure DevOps and GitHub Actions. Implement automated workflows for building, testing, and deploying across multiple environments
  • Perform extensive technical investigations into system gaps and performance bottlenecks, presenting viable solution paths with detailed risk assessments
  • Develop and maintain unit tests using frameworks such as MSTest, NUnit, or xUnit. Enforce coding standards through rigorous code reviews and developer QA support
  • Produce high-level architecture diagrams, technical specifications, and API documentation. Ensure all changes align with established organizational standards
  • Establish coding guidelines and foster team collaboration. Monitor the work of junior developers, providing technical guidance and performance feedback

Requirements:

  • Proven software development history, with a focus on adapting and modernizing legacy systems
  • Deep proficiency in VB.NET, C#, Oracle PL/SQL, and the Spring.NET Framework
  • Hands-on experience with Azure DevOps or GitHub Actions, complemented by PowerShell or Bash scripting
  • Strong understanding of software architecture patterns, the full SDLC, and Agile methodologies (Scrum/RAD)
  • Knowledge of accessibility standards (e.g., AODA) and experience implementing "Internet-ready" secure applications
  • Post-secondary education in Computer Science, Software Engineering, or a related field
  • Azure Developer Associate, Oracle Certified Professional, or DevOps Engineer Expert
What we offer:
  • Own the modernization roadmap for a mission-critical platform, deciding the best path between refactoring and selective rewrites
  • Drive the adoption of automated workflows and CI/CD best practices in a complex, multi-tiered environment
  • Shape the next generation of developers by establishing coding guidelines and fostering a collaborative, knowledge-sharing culture
  • Work at the unique intersection of object-oriented legacy frameworks and modern web-based REST services

Additional Information:

Job Posted:
April 06, 2026

Expiration:
June 02, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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