[Job - 31026] Senior PHP Developer (Security Remediation), Brazil

At CI&T, our rapid growth is fueled by the innovative solutions we create for our global clients. 

We are seeking talented Security Remediation Developers to accelerate vulnerability remediation throughput for a large US mortgage lender. Their vulnerability management program is surfacing more fixes than the internal teams can execute, and you will close that gap — researching each finding, implementing the fix at code and configuration level, deploying it, and proving it is closed. This is hands-on engineering work, not advisory work: you will spend your days in the codebase and in AWS.

Responsibilities:

• Take prioritized remediation items from the backlog and drive them to deployed, validated completion.
• Research assigned vulnerabilities: reproduce where possible, identify root cause, and determine the correct fix rather than the fastest one.
• Implement code-level remediation in PHP: refactor vulnerable patterns, fix injection, authentication, deserialization, and exposure defects, and remove hardcoded credentials.
• Perform dependency and package upgrades, resolving breaking changes and transitive conflicts.
• Perform AWS-side remediation and deployment, including configuration hardening and IAM adjustments.
• Execute secret rotation tasks in coordination with the Remediation Lead, updating consumers and migrating credentials to a managed secrets store.
• Validate every fix: write or extend automated tests, confirm the finding no longer reproduces, and document closure evidence the client's risk program can report on.
• Work embedded with the client's engineering team, following their branching, code review, CI/CD, and definition of done.
• Identify recurring patterns that warrant a systemic fix rather than repeated one-off remediation, and contribute them to the remediation playbook.
• Support the client's engineers in adopting secure coding practices.

Requirements:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• Professional PHP development experience, including work on legacy or inherited codebases.
• Good English communication skills (reading, writing, and speaking) — daily collaboration with a US-based engineering team.
• Demonstrated secure coding practice, with the OWASP Top 10 as vulnerabilities you have personally remediated.
• Practical AWS experience 
• Strong dependency management with Composer, including resolving upgrade conflicts.
• Proficiency with Git, code review discipline, and CI/CD pipelines.
• Experience writing automated tests with PHPUnit or an equivalent framework.

Nice to Have:

• Experience remediating scanner findings at volume (Snyk, Veracode, Dependabot, Checkmarx).
• Prior experience burning down a security or technical debt backlog against throughput targets.
• Modern PHP frameworks such as Laravel or Symfony, alongside legacy pre-framework PHP.
• Infrastructure as Code with Terraform or CloudFormation.
•AWS experience deploying and operating PHP applications, covering compute (EC2, ECS, Elastic Beanstalk, or Lambda), IAM, S3, RDS, CloudWatch, and Secrets Manager or Parameter Store.

•Containerization experience with Docker and ECS or EKS.
• Experience integrating with legacy systems such as IBM i / RPG or SOAP services.
• Experience in mortgage, lending, or financial services.
• Experience working with international clients.

Join CI&T and be a part of our mission to build secure, resilient software for our global clients. If you have a passion for PHP and AWS engineering and take satisfaction in closing security findings for good, we want to hear from you!

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