{"id":2198815,"url":"https://alion.io/job/constellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba","title":"IRS CAS (Sr. Full Stack Developer/Platform Engineer) -PBBA","company":{"id":4377103,"name":"Constellation West","domain":"constellationwest.com","url":"https://alion.io/company/constellation-west","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":85000,"max_usd":212000,"period":"year","method":"global_role_seniority_cell","sample_n":6426},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"GitHub","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"OpenShift","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"Spring Boot","optional":false},{"name":"API Gateway","optional":true}],"status":"live","first_seen_at":"2026-10-09T17:23:04Z","employer_posted_date":null,"last_verified_at":"2026-10-09T17:23:04Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"IRS CAS (Sr. Full Stack Developer/Platform Engineer)\nJob Overview:Customer: Internal Revenue Services (IRS)Location: Remote, with occasional onsite support for meetings, deployments, production activities, or knowledge transfer as required.\nClearance: No clearance required.Position Summary:The candidate needs 5+ years of Java/J2EE and Spring Boot development and sustainment experience, along with ReactJS or comparable UI technology.\nExperience should include JDK 17+ upgrades, SSO integration, dependency remediation, RHEL/Linux, OpenShift/Kubernetes, containerization, REST/SOAP, database troubleshooting, Git/GitHub, CI/CD awareness, secure coding, regression/smoke validation, UI and functional defect correction, releases, and rollback.\nThe IRS also specifically requires demonstrated experience migrating applications from VM-based hosting to containerized/OpenShift-aligned deployment patterns while preserving functionality and external interfaces.\nRequired Experience\nSoftware engineering experience\n\nEnterprise API development\n\nJava\n\nSpring Boot\n\nREST and SOAP web services\n\nIBM webMethods\n\nEnterprise middleware\n\nMicroservices architecture\n\nOpenShift or Kubernetes\n\nEnterprise system integration\n\nApplication modernization\n\nProduction support and troubleshooting\n\nAgile development\n\nPreferred Experience\nIRS experience\n\nFederal Government experience\n\nAPI Gateway experience\n\nDevSecOps environments\n\nContainerized applications\n\nEducationBachelor's degree in or equivalent experience.\nClearanceNo clearance required.We are an Equal Opportunity Employer:All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. Constellation West will not discharge or, in any other manner, discriminate against employees or applicants because they have inquired about, discussed, or disclosed their pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)\nAbout The Organization:Constellation West is an award winning company that delivers Information Technology (IT) engineering services and solutions and non-IT subject matter expertise worldwide. Established in 1997, Constellation West is an industry leader, partnering with key organizations. As a prime contractor or preferred subcontractor, we have a continual list of opportunities to fill nationwide with multiple agencies such as the Department of Veteran Affairs, the Department of Defense, civilian agencies, and the national intelligence community. Many positions supporting the U.S. federal government require our employees to be granted security clearances.\nConstellation West provides fully integrated solutions spanning all aspects of system/network engineering, system/network administration, data management, information assurance, quality assurance, full lifecycle support, software development, and geospatial information services. Constellation West looks for the right people ready to step up and be part of a dynamic team.\nAre you up for an exciting challenge? Do you want to apply your expertise and knowledge to solve complex problems? Join our team at Constellation West! We offer an exhilarating work environment, a competitive salary, and benefits that will reward your hard work and dedication. Don't miss out on this amazing opportunity!\nBenefits include but are not limited to:• Tuition reimbursement• Competitive 401(k) plan• Competitive Health Benefits• 11 Paid Holidays!!• 15 PTO Days!• Veteran Hiring PreferenceConstellation West is proud to be an EEO/AA employer M/F/D/V\nDESCRIPTION:Constellation West is a 29-year WOSB and Prime Federal Contractor bidding on IRS Criminal Investigation (CI) Management Information System Support Services (MISSS). \n\nQualified incumbent personnel currently supporting this mission will be afforded Right of First Refusal (ROFR) for applicable positions, consistent with contract requirements and contingent upon continued eligibility, performance, and government approval.\nABOUT US:Constellation West is an award-winning company that delivers Information Technology (IT) engineering services and solutions and non-IT subject matter expertise worldwide. Established in 1997, Constellation West is an industry leader, partnering with key organizations across the Department of Defense and civilian agencies.\nBENEFITS:• Competitive 401(k) plan with employer matching \n• Competitive Health Benefits with employer contributions \n• 11 Paid Holidays per year • 15 Days starting PTO for new hires • Tuition/CE reimbursement \n• Relocation Assistance \n• Veteran Hiring Preference \n• Employee Stock Ownership Plan (ESOP)EEO:Constellation West is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.\nOriginally posted on Himalayas","description_format":"text","description_chars":5639,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Relocation assistance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Engineering Services","Government"],"lifecycle":[{"event":"open","at":"2026-10-09T20:28:45Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":3,"expected_fill_days":29,"reasons":["seen:3","win:early"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/constellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba","json_url":"https://alion.io/job/constellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba.json","meta":{"generated_at":"2026-10-13T06:59:45Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":10265,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4377103},"rest":"https://alion.io/mcp/rest/get_company?id=4377103"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fconstellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fconstellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fconstellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/constellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fconstellation-west-irs-cas-sr-full-stack-developerplatform-engineer-pbba"}]}