{"schemaVersion":"jobsearcher.job.v1","id":"b71af23a94bb9da3fad80306","url":"https://jobsearcher.com/jobs/b71af23a94bb9da3fad80306","canonicalUrl":"https://jobsearcher.com/jobs/b71af23a94bb9da3fad80306","title":"Systems Software Engineer","description":"REQUIRES AN ACTIVE/EXISTING TS/SCI WITH CI POLYGRAPH\n\nDAn Solutions is seeking experienced Systems Software Engineers with strong systems programming and database engineering backgrounds to support a mission-critical federal government program.\n\nThis position focuses on understanding and modifying how database engines and core software services operate internally. The ideal candidate is comfortable analyzing source code, examining network communications, tracing application behavior, and developing secure, scalable solutions across integrated technology environments.\n\nKey Responsibilities\n\nDevelop, test, maintain, and deploy software using C, C++, Rust, Go, Java, Python, or Node.js.\n\nDevelop concurrent and multithreaded applications using systems programming principles.\n\nAnalyze database engine source code, communication protocols, serialization formats, and packet structures.\n\nDesign and troubleshoot networked applications using sockets and client-server architectures.\n\nDevelop relational and graph database solutions, including SQL optimization and performance tuning.\n\nSupport technologies such as PostgreSQL, Redis, Neo4j, Amazon S3, and Elasticsearch.\n\nModernize existing services and develop Infrastructure as Code (IaC).\n\nDeploy and troubleshoot cloud-hosted applications and supporting infrastructure.\n\nIntegrate identity services using OpenID Connect (OIDC), authentication, authorization, and Zero Trust principles.\n\nMaintain technical documentation, software designs, and operational procedures.\n\nRequired Qualifications\n\nActive TS/SCI clearance with the ability to obtain a CI Polygraph.\n\nBachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related quantitative discipline.\n\nTypically 10 years of professional software engineering experience.\n\nPrevious Intelligence Community experience.\n\nHands-on systems programming experience with C, C++, or Rust.\n\nExperience with operating-system interfaces, process management, concurrency, and multithreaded applications.\n\nExperience analyzing database internals, network protocols, or low-level software behavior.\n\nStrong SQL, relational database, and graph database knowledge.\n\nExperience with cloud infrastructure, automation, and identity integration using OIDC.\n\nKnowledge of Zero Trust Architecture and enterprise security controls.\n\nExperience with Agile, DevOps, or DevSecOps methodologies.\n\nAgile Developer or Certified Scrum Developer certification.\n\nCompTIA Security+ or higher cybersecurity certification.\n\nPreferred Qualifications\n\nMaster's degree in a related technical discipline.\n\nExperience with PostgreSQL, Neo4j, and database engine internals.\n\nTerraform, Ansible, AWS GovCloud, Kubernetes, or Red Hat OpenShift.\n\nExperience with PingFederate, Keycloak, SailPoint, Okta, or similar identity platforms.\n\nExperience with PKI, cryptographic integrations, Hardware Security Modules, or PKCS #11.\n\nFamiliarity with Trusted Data Format, Protocol Buffers, and modern cryptographic technologies.\n\nWork Location\n\nThis position requires full-time work at a government facility in Charleston, SC or the Washington Metropolitan Area. Candidates in other locations may be considered.\n\nSalary Range Disclaimer:The posted salary range represents the good-faith minimum and maximum compensation DAn Solutions expects to pay for this position. The position may be filled at different Labor Category (LCAT) levels depending on the selected candidate's qualifications and applicable contract requirements. Final compensation within the posted range will be determined based on the applicable LCAT and factors including education, relevant experience, certifications, and other required qualifications","company":"Dan Solutions","rawCompany":"dan solutions","city":"Washington","state":"DC","isRemote":false,"isActive":true,"createdAt":"2026-10-31T07:52:36.886Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"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":"Systems Software Engineer","description":"REQUIRES AN ACTIVE/EXISTING TS/SCI WITH CI POLYGRAPH\n\nDAn Solutions is seeking experienced Systems Software Engineers with strong systems programming and database engineering backgrounds to support a mission-critical federal government program.\n\nThis position focuses on understanding and modifying how database engines and core software services operate internally. The ideal candidate is comfortable analyzing source code, examining network communications, tracing application behavior, and developing secure, scalable solutions across integrated technology environments.\n\nKey Responsibilities\n\nDevelop, test, maintain, and deploy software using C, C++, Rust, Go, Java, Python, or Node.js.\n\nDevelop concurrent and multithreaded applications using systems programming principles.\n\nAnalyze database engine source code, communication protocols, serialization formats, and packet structures.\n\nDesign and troubleshoot networked applications using sockets and client-server architectures.\n\nDevelop relational and graph database solutions, including SQL optimization and performance tuning.\n\nSupport technologies such as PostgreSQL, Redis, Neo4j, Amazon S3, and Elasticsearch.\n\nModernize existing services and develop Infrastructure as Code (IaC).\n\nDeploy and troubleshoot cloud-hosted applications and supporting infrastructure.\n\nIntegrate identity services using OpenID Connect (OIDC), authentication, authorization, and Zero Trust principles.\n\nMaintain technical documentation, software designs, and operational procedures.\n\nRequired Qualifications\n\nActive TS/SCI clearance with the ability to obtain a CI Polygraph.\n\nBachelor's degree in Computer Science, Engineering, Information Technology, Mathematics, or a related quantitative discipline.\n\nTypically 10 years of professional software engineering experience.\n\nPrevious Intelligence Community experience.\n\nHands-on systems programming experience with C, C++, or Rust.\n\nExperience with operating-system interfaces, process management, concurrency, and multithreaded applications.\n\nExperience analyzing database internals, network protocols, or low-level software behavior.\n\nStrong SQL, relational database, and graph database knowledge.\n\nExperience with cloud infrastructure, automation, and identity integration using OIDC.\n\nKnowledge of Zero Trust Architecture and enterprise security controls.\n\nExperience with Agile, DevOps, or DevSecOps methodologies.\n\nAgile Developer or Certified Scrum Developer certification.\n\nCompTIA Security+ or higher cybersecurity certification.\n\nPreferred Qualifications\n\nMaster's degree in a related technical discipline.\n\nExperience with PostgreSQL, Neo4j, and database engine internals.\n\nTerraform, Ansible, AWS GovCloud, Kubernetes, or Red Hat OpenShift.\n\nExperience with PingFederate, Keycloak, SailPoint, Okta, or similar identity platforms.\n\nExperience with PKI, cryptographic integrations, Hardware Security Modules, or PKCS #11.\n\nFamiliarity with Trusted Data Format, Protocol Buffers, and modern cryptographic technologies.\n\nWork Location\n\nThis position requires full-time work at a government facility in Charleston, SC or the Washington Metropolitan Area. Candidates in other locations may be considered.\n\nSalary Range Disclaimer:The posted salary range represents the good-faith minimum and maximum compensation DAn Solutions expects to pay for this position. The position may be filled at different Labor Category (LCAT) levels depending on the selected candidate's qualifications and applicable contract requirements. Final compensation within the posted range will be determined based on the applicable LCAT and factors including education, relevant experience, certifications, and other required qualifications","datePosted":"2026-10-31T07:52:36.886Z","dateModified":"2026-10-31T07:52:36.886Z","hiringOrganization":{"@type":"Organization","name":"Dan Solutions","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Washington","addressRegion":"DC","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"b71af23a94bb9da3fad80306"},"url":"https://jobsearcher.com/jobs/b71af23a94bb9da3fad80306"}}