Senior Application Developer (AWS/Python) onsite
System One Holdings, LLC
Senior Application Developer (AWS/Python)Washington, DC – 100% Onsite Per Federal contract U.S. citizenship is required Must be able to obtain Public Trust clearance W2 or C2C Application Deadline: 9/10Core Responsibilities: Development & Infrastructure:Develop and maintain Python-based microservices and AWS infrastructure using CDKModel complex business workflows with AWS Step FunctionsBuild containerized applications with RESTful APIsImplement comprehensive logging, monitoring, and audit trails (CloudWatch, CloudTrail)Quality & Collaboration:Conduct code reviews focused on maintainability, performance, and best practicesWrite unit tests and integration tests; perform code remediationContribute to architecture decisions and maintain technical documentationCollaborate with stakeholders to translate business requirements into technical solutionsRequired Qualifications: Core Technical Skills:Python: Production-grade development with modern frameworks and testing librariesAWS CDK: Infrastructure-as-code for multi-environment deploymentsCI/CD: Hands-on pipeline creation and management for cloud applicationsAPI Design: RESTful service design, versioning, and error handlingVersion Control: Git workflows, branching strategies, merge request reviewsTechnical Stack: Primary (daily use expected):Python 3.9+, AWS Lambda, Step FunctionsIaC: CDK, Terraform experienceDynamoDB, S3, API Gateway, CloudWatch, CloudTrailDocker, Git/GitLabSecondary (nice to have):Frontend: Angular or React (TypeScript)AWS Services: SNS/SQS, Athena, Glue, Load BalancersProductivity Tools (Plus):AI-Assisted DevelopmentExperience using AI coding assistants such as Claude Code for:Code review and optimization suggestionsDocumentation generationDebugging and troubleshootingTest case developmentAbility to critically evaluate and adapt AI-generated codeEducation & Experience:BS in Computer Science/IT or equivalent work experience7+ years software development experience with SDLC and Agile methodologies
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$126.06k - $128.86k
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$131k - $145k
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$150k - $200k
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$155.6k - $306.8k
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