{"schemaVersion":"jobsearcher.job.v1","id":"a09e42c3816ff5d7ace1d966","url":"https://jobsearcher.com/jobs/a09e42c3816ff5d7ace1d966","canonicalUrl":"https://jobsearcher.com/jobs/a09e42c3816ff5d7ace1d966","title":"Senior C# .NET Developer","description":"A leading technology integrator providing full life cycle services and solutions in the technical, engineering, intelligence, and enterprise information technology markets is seeking a highly motivated and customer-oriented engineer.The Role Design, build, and maintain C#/.NET/AWS backend services for high-volume healthcare EDI transactions. Parse, validate, and transform X12 EDI documents. Debug complex transaction-level issues across various partners. Optimize and troubleshoot SQL stored procedures, including performance tuning and complex data transformations. Write clean, testable, well-documented code and actively participate in code reviews. Contribute to shared platform libraries and services across multiple product initiatives.What You'll Need Bachelor's or Master's degree in Computer Science or a related engineering discipline. Minimum of 8 years of experience in software development using C#/.NET technologies. Proven track record on complex software projects and leading development initiatives. Strong proficiency in the C#/.NET ecosystem and developing back-end applications. Hands-on AWS experience (serverless, messaging, storage, databases) preferred. Strong SQL skills, including writing and optimizing stored procedures and performance tuning.What's On Offer Opportunity to make a direct impact on how VA healthcare data flows through a critical platform. Work in a 100% remote capacity. Engage in an agile framework for continuous improvement and reusability. Comprehensive benefits package and a collaborative work environment.Apply via Haystack today!","company":"Haystack","rawCompany":"haystack","city":"Denver","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-09-12T08:30:01.849Z","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":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"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 C# .NET Developer","description":"A leading technology integrator providing full life cycle services and solutions in the technical, engineering, intelligence, and enterprise information technology markets is seeking a highly motivated and customer-oriented engineer.The Role Design, build, and maintain C#/.NET/AWS backend services for high-volume healthcare EDI transactions. Parse, validate, and transform X12 EDI documents. Debug complex transaction-level issues across various partners. Optimize and troubleshoot SQL stored procedures, including performance tuning and complex data transformations. Write clean, testable, well-documented code and actively participate in code reviews. Contribute to shared platform libraries and services across multiple product initiatives.What You'll Need Bachelor's or Master's degree in Computer Science or a related engineering discipline. Minimum of 8 years of experience in software development using C#/.NET technologies. Proven track record on complex software projects and leading development initiatives. Strong proficiency in the C#/.NET ecosystem and developing back-end applications. Hands-on AWS experience (serverless, messaging, storage, databases) preferred. Strong SQL skills, including writing and optimizing stored procedures and performance tuning.What's On Offer Opportunity to make a direct impact on how VA healthcare data flows through a critical platform. Work in a 100% remote capacity. Engage in an agile framework for continuous improvement and reusability. Comprehensive benefits package and a collaborative work environment.Apply via Haystack today!","datePosted":"2026-09-12T08:30:01.849Z","dateModified":"2026-09-12T08:30:01.849Z","hiringOrganization":{"@type":"Organization","name":"Haystack","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Denver","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"a09e42c3816ff5d7ace1d966"},"url":"https://jobsearcher.com/jobs/a09e42c3816ff5d7ace1d966"}}