Freelance Backend Developer

Transmission

. Review current AWS staging and production architecture, configurations and deployments .

Posted 10/22/2026contractRemote • United StatesSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive expertise in AWS architecture, backend development with Python and FastAPI, and cloud infrastructure security. Proven ability to optimize application performance, manage production environments, and implement scalable solutions.

Highest-signal resume keywords

AWS Architecture ManagementPython DevelopmentCloud Infrastructure Security AssessmentApplication Performance OptimizationAWS Certified Solutions Architect – Professional

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

AWS ECSAWS FargatePythonFastAPIPostgreSQLSQLCloudFormationDockerCI/CDInfrastructure as Code

Tools & Technologies

CloudWatchCognitoS3ALBSnowflakePrefectAI/LLM ServicesGitHub Actions

Certifications & Qualifications

AWS Certified Solutions Architect – ProfessionalAWS Certified DevOps Engineer – ProfessionalAWS Certified Security – Specialty

Industry Keywords

Application Load BalancingEnvironment IsolationData SecurityVulnerability RemediationProduction Launch ReadinessAsynchronous ProcessingLoad TestingIncident Response

Tech Stack

Tools & technologies

AWSCloudDockerPostgresPythonSQL

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

7+ years of software engineering experience, including senior-level backend development
Extensive hands-on experience managing and troubleshooting production AWS environments
Strong Python and FastAPI development experience
Demonstrated expertise with AWS ECS, Fargate, IAM, VPC networking, ALB, CloudWatch, Cognito and S3
Experience assessing cloud infrastructure security and remediating vulnerabilities
Proven experience with application scalability, load testing and production performance optimization
Strong SQL and PostgreSQL experience
Experience with Docker, CI/CD, GitHub Actions and infrastructure as code
Ability to independently review an existing technical architecture and implement improvements
AWS Certified Solutions Architect – Professional, AWS Certified DevOps Engineer – Professional, and AWS Certified Security – Specialty are highly preferred
Experience with AWS CloudFormation, Snowflake, Prefect, asynchronous/background processing, AI-powered applications, third-party LLM APIs, secure multi-tenant SaaS applications, security assessments, penetration-test remediation and production launch readiness are highly preferred