Sr. Software Engineer – Legacy Java System Maintenance (AWS)

Sr. Software Engineer – Legacy Java System Maintenance (AWS)

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Since its founding in 1996, CTC has grown into a trusted global partner in AI & ML, Enterprise Applications, Digital Services, Managed Services, and Business Services. With headquarters in Detroit, Michigan, CTC has a team of over 2,000 experts worldwide. We empower more than 100 organizations to tackle complex challenges and transform them into sustainable competitive strengths—driving innovation, efficiency, and growth every step of the way. Our strengths have always been Commitment to Customer, Commitment to Colleagues, and Commitment to Community (CTC).

We are seeking a highly skilled Sr. Software Engineer (Contractor) to maintain and support a legacy enterprise system written in Java and deployed in AWS. This critical system supports customer-facing services and requires a hands‑on engineer who can manage defect resolution, perform regular maintenance tasks (such as library and dependency upgrades), and ensure ongoing operational stability and availability.

This role is ideal for an experienced engineer with a strong foundation in Java, cloud infrastructure, and operational systems support.

Key Responsibilities

• Investigate and resolve customer-reported defects in a timely and efficient manner.
• Perform routine system maintenance, including :
• Upgrading Java versions, frameworks, and third‑party libraries.
• Refactoring outdated components for stability and security.
• Monitor, troubleshoot, and ensure high availability and reliability of the system in production.
• Collaborate with internal teams (support, operations, product) to understand issues and propose solutions.
• Contribute to technical documentation and handoffs.
• Implement and maintain automated tests and CI / CD pipelines where possible to support safe changes.

Required Qualifications

Preferred Qualifications

Experience with infrastructure‑as‑code (e.g., CloudFormation, Terraform).

Familiarity with CI / CD tools like Jenkins, GitHub Actions, or CodePipeline.

Understanding of security best practices for Java and AWS environments.

Prior experience modernizing or migrating legacy systems.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

IT Services and IT Consulting

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