Transmission

Backend Engineer

• Review current AWS staging and production architecture, configurations and deployments
• Assess ECS/Fargate, networking, application load balancing, IAM, Cognito, S3, KMS and Secrets Manager
• Evaluate environment isolation, permissions, authentication, authorization and data security
• Identify vulnerabilities, misconfigurations, security gaps and infrastructure risks
• Recommend and implement remediation, prioritizing critical issues before broader production rollout
• Review AWS CloudFormation configurations and infrastructure deployment practices
• Evaluate readiness for increased concurrent users and application workloads
• Assess API performance, database connections, application resource utilization and scaling configurations
• Conduct or support load and stress testing to identify performance bottlenecks
• Review application logging, CloudWatch monitoring, alerting and incident-response capabilities
• Evaluate backup, recovery, resilience and deployment/rollback processes
• Ensure staging environments adequately represent production behavior
• Develop and improve backend functionality using Python and FastAPI
• Troubleshoot and optimize REST APIs and third-party integrations
• Support PostgreSQL, Snowflake and AWS-hosted data integrations
• Develop reliable background processing, scheduled jobs and asynchronous workflows
• Support integration of AI/LLM services with the existing application
• Collaborate with the AI developer and data scientists to complete Phase 2 functionality
• Document changes and provide technical knowledge transfer

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Freelance Backend Developer