{"schemaVersion":"jobsearcher.job.v1","id":"22334e7f3f11e96c96e0b25f","url":"https://jobsearcher.com/jobs/22334e7f3f11e96c96e0b25f","canonicalUrl":"https://jobsearcher.com/jobs/22334e7f3f11e96c96e0b25f","title":"Senior Backend Engineer - Java/AWS","description":"Job Description\n\nJob Title:Senior Backend Engineer – Java / AWS Location:Washington, DC (On-site) Employment Type:W2 Contract\r\nAbout the Opportunity: ZipStaff is hiring a Senior Backend Engineer for our client, a national passenger transportation organization, to build and support the cloud-native integrations and transaction-processing services behind critical operational systems. You will take hands-on ownership of resilient, multi-region AWS architectures, event-driven pipelines and automated CI/CD workflows, ensuring high reliability, rapid disaster recovery and seamless B2B data exchange.\r\nWhat You'll Do:Design, build, deploy and maintain scalable microservices, RESTful APIs and event-driven architectures using Java 17+, Spring Boot, Python and AWS integration services.\r\nArchitect fault-tolerant, high-availability solutions across multiple AWS Availability Zones and Regions, including failover testing and reducing MTTR.\r\nInvestigate complex production incidents, perform root cause analysis and implement observability with Amazon CloudWatch.\r\nBuild and optimize CI/CD pipelines using GitHub Actions, Jenkins, AWS CodePipeline and CloudFormation infrastructure-as-code.\r\nImplement relational data models, write complex queries and tune performance on Amazon Aurora PostgreSQL.\r\nDrive peer code reviews, champion automated testing standards (JUnit, Mockito) and mentor junior developers.Required Qualifications:7+ years of professional backend software engineering experience on distributed, high-availability production systems.\r\nAdvanced hands-on proficiency in Java 17+, Spring Boot and Python.\r\nExtensive experience with AWS services including ECS/Fargate, EventBridge, SQS, SNS, Lambda, S3 and CloudWatch.\r\nStrong PostgreSQL / Amazon Aurora PostgreSQL skills, including schema design, query optimization and tuning.\r\nExperience managing automated deployments with Jenkins, GitHub Actions, AWS CodePipeline and CloudFormation.\r\nProficiency with automated unit and integration testing frameworks (JUnit, Mockito).\r\nBachelor's degree in Computer Science, Engineering or a related field, or equivalent experience.\r\nAbility to work on-site in Washington, DC.Preferred Qualifications:Active AWS certification (Solutions Architect, Developer Associate or Cloud Practitioner).\r\nExperience with EDI, B2B messaging integrations or high-volume transportation/logistics systems.\r\nBased within or easily accessible to the Northeast Corridor for periodic on-site planning sessions.Benefits:Health Insurance.\r\nDental Insurance.\r\nVision Insurance.\r\n401(k) + 401(k) matching.\r\nPaid time off.\r\nReferral Program.About ZipStaff: ZipStaff connects skilled technology professionals with leading organizations across the United States, matching top talent with impactful contract and full-time opportunities.\r\nTo apply, submit your resume through this posting. Qualified candidates will be contacted by a ZipStaff recruiter.","company":"Zipstaff","rawCompany":"zipstaff","city":"Washington","state":"DC","isRemote":false,"isActive":true,"createdAt":"2026-11-12T01:26:48.777Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Backend Engineer - Java/AWS","description":"Job Description\n\nJob Title:Senior Backend Engineer – Java / AWS Location:Washington, DC (On-site) Employment Type:W2 Contract\r\nAbout the Opportunity: ZipStaff is hiring a Senior Backend Engineer for our client, a national passenger transportation organization, to build and support the cloud-native integrations and transaction-processing services behind critical operational systems. You will take hands-on ownership of resilient, multi-region AWS architectures, event-driven pipelines and automated CI/CD workflows, ensuring high reliability, rapid disaster recovery and seamless B2B data exchange.\r\nWhat You'll Do:Design, build, deploy and maintain scalable microservices, RESTful APIs and event-driven architectures using Java 17+, Spring Boot, Python and AWS integration services.\r\nArchitect fault-tolerant, high-availability solutions across multiple AWS Availability Zones and Regions, including failover testing and reducing MTTR.\r\nInvestigate complex production incidents, perform root cause analysis and implement observability with Amazon CloudWatch.\r\nBuild and optimize CI/CD pipelines using GitHub Actions, Jenkins, AWS CodePipeline and CloudFormation infrastructure-as-code.\r\nImplement relational data models, write complex queries and tune performance on Amazon Aurora PostgreSQL.\r\nDrive peer code reviews, champion automated testing standards (JUnit, Mockito) and mentor junior developers.Required Qualifications:7+ years of professional backend software engineering experience on distributed, high-availability production systems.\r\nAdvanced hands-on proficiency in Java 17+, Spring Boot and Python.\r\nExtensive experience with AWS services including ECS/Fargate, EventBridge, SQS, SNS, Lambda, S3 and CloudWatch.\r\nStrong PostgreSQL / Amazon Aurora PostgreSQL skills, including schema design, query optimization and tuning.\r\nExperience managing automated deployments with Jenkins, GitHub Actions, AWS CodePipeline and CloudFormation.\r\nProficiency with automated unit and integration testing frameworks (JUnit, Mockito).\r\nBachelor's degree in Computer Science, Engineering or a related field, or equivalent experience.\r\nAbility to work on-site in Washington, DC.Preferred Qualifications:Active AWS certification (Solutions Architect, Developer Associate or Cloud Practitioner).\r\nExperience with EDI, B2B messaging integrations or high-volume transportation/logistics systems.\r\nBased within or easily accessible to the Northeast Corridor for periodic on-site planning sessions.Benefits:Health Insurance.\r\nDental Insurance.\r\nVision Insurance.\r\n401(k) + 401(k) matching.\r\nPaid time off.\r\nReferral Program.About ZipStaff: ZipStaff connects skilled technology professionals with leading organizations across the United States, matching top talent with impactful contract and full-time opportunities.\r\nTo apply, submit your resume through this posting. Qualified candidates will be contacted by a ZipStaff recruiter.","datePosted":"2026-11-12T01:26:48.777Z","dateModified":"2026-11-12T01:26:48.777Z","hiringOrganization":{"@type":"Organization","name":"Zipstaff","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Washington","addressRegion":"DC","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"22334e7f3f11e96c96e0b25f"},"url":"https://jobsearcher.com/jobs/22334e7f3f11e96c96e0b25f"}}