{"id":651388,"url":"https://alion.io/job/pt78-senior-software-engineer","title":"Senior Software Engineer","company":{"id":684613,"name":"Platinum Technologies","domain":"pt78.co","url":"https://alion.io/company/pt78","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Herndon, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":131000,"max_usd":243000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":2304},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"Knowledge Graph","optional":false},{"name":"Kubernetes","optional":false},{"name":"OpenShift","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-08-11T20:41:30Z","employer_posted_date":"2026-08-11","last_verified_at":"2026-09-30T21:19:48Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"Who we are.\nPlatinum Technologies is a Northern Virginia based integrated solutions firm that specializes in Cybersecurity, Cloud and Digital Services to the Public Sector. Our team solves hard problems and helps our Mission Partners achieve their goals. If you are self-motivated, possess demonstrated learning agility, and are passionate about delivering high-quality work products - we want to hear from you.\nWe lead with technical expertise, but that is just the tip of the iceberg - the ‘Why’ matters. At Platinum, we don’t hire people to do a job. We provide professional and leadership development to complement our self-motivated domain experts. Our teammates are dot-connecting leaders that operate in a mutually accountable environment to deliver thought leadership, expert technical analysis, and quality execution for our clients.\nThis position requires an active U.S. Government Security Clearance at the TS/SCI level with CI polygraph.\nYou.\nPlatinum Technologies is seeking a Senior Software Engineer to join our team. In this position you will design, develop, integrate, and maintain software applications and services that support Object-Based Intelligence (OBI) mission requirements, enterprise ontologies, and knowledge graph capabilities.\nThe Senior Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management, and advanced analytics. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows. Working within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities.\nWhat you get to do.\nDesign, develop, test, deploy, and maintain software applications and microservices supporting Object-Based Intelligence mission requirements.\nDevelop APIs and backend services that integrate with enterprise ontologies, knowledge graphs, semantic databases, and object-management systems.\nImplement software solutions that leverage Semantic Web technologies, including RDF, OWL, SPARQL, and graph-based data models, to enable advanced search, reasoning, and data interoperability.\nCollaborate with ontology engineers, database engineers, data scientists, analysts, and Government stakeholders to translate mission requirements into scalable software solutions.\nDesign and develop secure, containerized applications using modern software engineering practices and cloud-native technologies.\nIntegrate heterogeneous data sources through RESTful APIs, messaging services, and data integration frameworks to support enterprise knowledge management.\nDevelop automated unit, integration, and system tests while supporting continuous integration and continuous deployment (CI/CD) pipelines.\nOptimize application performance, scalability, and reliability to support high-volume mission operations and advanced analytics.\nParticipate in Agile development activities, including sprint planning, code reviews, technical design sessions, and backlog refinement.\nProduce and maintain software design documentation, interface specifications, API documentation, and technical implementation guides.\nSupport AI/ML initiatives by developing software services that enable access to semantic data, knowledge graphs, and contextual reasoning capabilities.\nProvide technical leadership, mentoring, and knowledge transfer activities to Government personnel and project team members on software engineering best practices.\nRequired Skills.\nMust be a U.S. citizen and have an active TS/SCI with CI polygraph.\nMinimum twelve (12) years of experience and an advanced degree or 17 years of experience with a bachelor's degree.\nDemonstrated experience designing, developing, and maintaining enterprise software applications using modern programming languages such as Java, Python, or C#.\nExperience developing RESTful APIs, microservices, and distributed applications.\nExperience integrating applications with relational databases, graph databases, or semantic data platforms.\nExperience with containerization technologies such as Docker and Kubernetes/OpenShift.\nFamiliarity with Agile software development methodologies, DevSecOps practices, and CI/CD pipelines.\nExperience with version control systems such as Git.\nAbility to communicate complex technical concepts effectively to both technical and non-technical stakeholders.\nThe Company is an Equal Opportunity/Affirmative Action employer. All qualified candidates will receive consideration for employment without regard to disability, protected veteran status, race, color, religious creed, national origin, citizenship, marital status, sex, sexual orientation/gender identity, age, or genetic information.","description_format":"text","description_chars":5032,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Information Technology","Software"],"lifecycle":[{"event":"open","at":"2026-09-10T20:32:09Z"}],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.613,"p_room":0.55,"age_days":49,"expected_fill_days":42,"reasons":["conf:0","win:tail"],"computed_at":"2026-09-30T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/pt78-senior-software-engineer","json_url":"https://alion.io/job/pt78-senior-software-engineer.json","meta":{"generated_at":"2026-10-01T04:18:05Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3602,"day_limit":5000,"remaining_today":1398,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}