Senior API Platform Software Engineer

Senior API Platform Software EngineerCGI is seeking a Senior API Platform Software Engineer to join an API Ecosystem team supporting enterprise scale financial services applications. This role is focused on building and enhancing backend services, APIs, and API platform capabilities within a highly distributed, AWS based environment. We partner with 15 of the top 20 banks globally, and our top 10 banking clients have worked with us for an average of 26 years!. This role is located at a client site in either Knoxville, TN, Columbia SC or Lafayette, LA or Birmingham, AL. A hybrid working model is acceptable.The engineer will develop secure, scalable RESTful APIs and microservices while contributing across the API lifecycle, including implementation, versioning, security, performance, monitoring, and production support. The role requires strong hands-on development experience with Java or Python, modern DevOps practices, AWS services, and API management technologies. You will work closely with Product, DevOps, Security, and Architecture teams in an Agile environment to deliver reliable API solutions that meet enterprise security, availability, and performance requirements.Required qualifications to be successful in this role include: 5+ years of hands on software development experience using Java (8–21) and/or Python. Experience developing RESTful APIs, backend services, and microservices in distributed environments. Hands on experience with AWS, particularly services such as EC2, ECS, EKS, Lambda, S3, IAM, Route 53, and CloudWatch. Experience with API management and API gateway technologies, including Apigee OPDK, Apigee X, or Apigee Hybrid. Strong understanding of the API lifecycle, including versioning, security, throttling, traffic management, and analytics. Experience implementing API security using OAuth 2.0, JWT, mTLS, and API key management. Working knowledge of OpenAPI/Swagger; GraphQL experience is a plus. Experience with CI/CD and DevOps tooling, including GitHub or GitLab and Terraform. Working knowledge of JavaScript/TypeScript for supporting full stack or platform development needs. Experience with containers and Kubernetes, particularly ECS and EKS in AWS environments. Familiarity with monitoring and observability tools such as OpenTelemetry (OTEL), Splunk, and AWS CloudWatch. Understanding of load balancing, caching, high availability, resiliency, and disaster recovery concepts. Experience working with both relational and NoSQL databases. Strong troubleshooting and problem solving skills with the ability to quickly learn new technologies. Experience collaborating with Product, DevOps, Security, and Architecture teams in an Agile/Scrum environment.What you can expect from us: Together, as owners, let's turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.