{"id":3584020,"url":"https://alion.io/job/leidos-senior-java-developer","title":"Senior Java Developer","company":{"id":7791,"name":"Leidos","domain":"leidos.com","url":"https://alion.io/company/leidos","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":303,"ghost_share":0.003,"stale_share":0.878,"repost_share":0.01,"time_to_fill_p50_days":28,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":107900,"max":195050,"currency":"USD","period":"year","gross":null,"usd_annual":195050},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"FHIR","optional":false},{"name":"Git","optional":false},{"name":"HL7","optional":false},{"name":"Java","optional":false},{"name":"Quarkus","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Framework","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-29T00:00:00Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-03T21:55:22Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Leidos is seeking an experienced Senior Java Developer to support the National Healthcare Safety Network (NHSN) Support program to design, develop, and maintain healthcare applications and data integration solutions supporting public health surveillance and healthcare data exchange.\nCandidate MUST:\nBe a US Citizen or Green Card holder currently located in the UNITED STATES for the current three consecutive years with the ability to obtain a Public Trust Clearance.\nPlease be advised that during the interview, you will be required to keep your camera on, and your interviewer will be taking your picture for identification purposes if an offer letter is extended to you\nThe ideal candidate will possess strong Java development skills and hands-on experience with HL7 healthcare interoperability standards, particularly Clinical Document Architecture (CDA). Responsibilities include implementing and maintaining healthcare data interfaces, processing and validating clinical documents, troubleshooting complex integration issues, and supporting application modernization initiatives.\nThe candidate will collaborate with technical teams, healthcare subject matter experts, and customer stakeholders to deliver reliable, scalable, and standards-compliant software solutions.\nJob Responsibilities:\nIndependently design and implement complex Java-based healthcare integration solutions.\nInterpret HL7 CDA specifications and translate healthcare data requirements into technical designs.\nTroubleshoot complex data exchange, validation, and interoperability issues.\nConduct code reviews and mentor junior and mid-level developers.\nCollaborate effectively with healthcare SMEs, business analysts, QA, and customer stakeholders.\nIdentify opportunities to improve application architecture, maintainability, and automated testing.\nRequired Qualifications:\nBachelor's degree in Computer Science, Software Engineering, Information Technology, or related field, with equivalent experience considered.\n8+ years of professional software development experience, with strong proficiency in Java.\nExperience with Quarkus, Spring Framework, RESTful APIs, and enterprise application development.\nHands-on experience implementing or supporting healthcare data exchange using HL7 standards, particularly HL7 CDA.\nExperience parsing, validating, transforming, and processing CDA XML documents.\nStrong knowledge of XML, XSD, XPath, and related XML processing technologies.\nExperience designing and implementing interfaces between healthcare information systems.\nExperience with relational databases, SQL, and data mapping/transformation.\nExperience with Git, CI/CD, automated testing, debugging, and Agile development practices.\nAbility to analyze complex technical problems and independently design and implement solutions.\nExperience implementing and troubleshooting Schematron rules for HL7 CDA document validation.\nExperience transforming CDA documents into target XML structures and validating output accuracy through automated XML comparison and regression testing.\nExperience performing root-cause analysis of production integration failures, analyzing application logs, database records, and implementing monitoring, health checks, and alerting.\nAbility to manage differences across CDA implementation guide versions and maintain backward compatibility as healthcare reporting requirements evolve.\nRecommended Qualifications:\nExperience interpreting and implementing HL7 CDA implementation guides and associated conformance requirements.\nFamiliarity with Consolidated Clinical Document Architecture (C-CDA) and structured clinical documents.\nKnowledge of HL7 FHIR resources, REST APIs, and healthcare interoperability architectures.\nUnderstanding of clinical terminology, healthcare workflows, and electronic health record (EHR) systems.\nExperience integrating with EHR systems such as Epic, Oracle Health/Cerner, or other healthcare platforms.\nFamiliarity with SNOMED CT, LOINC, ICD-10-CM, and other clinical coding systems.\nExperience with electronic public health reporting, including NHSN, electronic case reporting, or healthcare-associated infection surveillance.\nExperience with healthcare interface engines such as Rhapsody, Mirth Connect (NextGen Connect), or InterSystems.\nExperience with Azure cloud services, microservices, and containerized applications.\nExperience modernizing legacy healthcare applications or migrating healthcare interfaces to modern architectures.\nExperience using AI-assisted development tools to improve development efficiency, testing, and code quality.\nphhs\nIf you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.\nOriginal Posting:\nOctober 29, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.\nPay Range:\nPay Range $107,900.00 - $195,050.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. 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