{"id":1604608,"url":"https://alion.io/job/fidelity-mainframe-operating-systems-engineer","title":"Mainframe Operating Systems Engineer","company":{"id":21095,"name":"Fidelity Investments","domain":"fidelity.com","url":"https://alion.io/company/fidelity","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","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":null,"salary_estimate":{"min_usd":86000,"max_usd":167000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":158},"experience_years_min":5,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"Git","optional":false},{"name":"GitHub","optional":false},{"name":"Incident Management","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Python","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2026-10-01T19:45:02Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-05T22:12:19Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Fidelity will not provide immigration sponsorship for this position.\nJob Description:\nSenior Mainframe Operating Systems Engineer\nThe Team \nThe Mainframe Operating Systems team is responsible for the engineering, support, stability, security, and modernization of Fidelity's enterprise mainframe platform. The team provides the foundational operating system services that support critical business applications across the organization. By maintaining a secure, resilient, and high-performing platform, the team enables business areas to deliver services to customers with confidence and reliability. \nAs a Senior Mainframe Operating Systems Engineer, you will work closely with infrastructure teams, application development teams, architecture teams and software vendors. The team is focused on maintaining operational excellence, keeping software current, implementing new technologies, and continuously improving the mainframe environment through automation and modernization initiatives. \nYou will be part of a collaborative team that values technical expertise, innovation, continuous learning, and knowledge sharing while supporting one of the industry's largest and most sophisticated mainframe environments.\n The Expertise You Have\nBachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent professional experience. \n5 - 8+ years of hands-on experience supporting IBM z/OS operating systems in a systems programming or operating systems engineering role. \nExperience administering and supporting large-scale enterprise mainframe environments. \n5+ years experience installing, customizing, upgrading, and maintaining IBM and Independent Software Vendor software products using SMP/E. \nExperience supporting Parallel Sysplex environments, Coupling Facilities, and high-availability mainframe architectures. \nExperience supporting software products including Top Secret, Control-M, MFX, CA-1, Endevor, z/OSMF, System Automation, NetView, OMEGAMON, SYSVIEW, Mobius, and related technologies. \nExperience with z/OS Unix System Services (USS), JCL, REXX, Python, and shell scripting (KSH/SH) to automate operational and engineering activities. \nExperience with change management, incident management, problem management, and software lifecycle practices. \nExperience working directly with software vendors to resolve technical issues and perform root cause analysis. \nExperience supporting disaster recovery solutions including GDPS, Global Mirror, and Metro Mirror. \nExperience with modern mainframe tooling, automation frameworks, DevOps practices, and platform engineering concepts. \nThe Skills You Bring \nYou bring advanced knowledge of IBM z/OS operating systems and core system components. \nYou demonstrate expertise in software installation, customization, maintenance, and support using SMP/E processes. \nYou bring strong technical problem-solving and analytical skills when diagnosing complex operating system, infrastructure, and system software issues. \nYou communicate effectively with both technical and non-technical partners and can explain complex concepts clearly. \nYou collaborate effectively across infrastructure, application development, architecture, and vendor organizations. \nYou take initiative in identifying opportunities to improve system reliability, automation, and operational efficiency. \nYou bring experience working with technologies such as z/OSMF, Zowe, Unix System Services, JCL, REXX, Python, and Git-based development practices. \nYou demonstrate strong organizational skills while managing multiple priorities in a fast-paced environment. \nYou contribute as a technical leader by sharing knowledge, mentoring team members, and driving engineering best practices. \nYou work effectively with software vendors and internal stakeholders to resolve issues, evaluate solutions, and implement improvements. \nYou possess strong written and verbal communication skills and can effectively document and present technical information to a variety of audiences.\nThe Value You Deliver \nSupporting the stability, availability, security, and performance of Fidelity's enterprise z/OS operating system environment. \nInstalling, customizing, upgrading, and maintaining IBM and Independent Software Vendor software products while ensuring software currency and platform resiliency. \nLeading operating system upgrades, software maintenance activities, technology refresh initiatives, and infrastructure modernization efforts. \nAutomating operational processes utilizing JCL, REXX, Python, Ansible, and other platform engineering tools to improve efficiency and reduce operational risk. \nSupporting critical incident resolution, problem determination, root cause analysis, and production support activities for business-critical systems. \nAdvancing modern mainframe capabilities through technologies such as z/OSMF, Zowe, GitHub Enterprise, APIs, IBM Open Enterprise SDK for Python, and contemporary development practices. \nSupporting emerging technologies and modernization initiatives including z/OS Container Extensions (zCX), IBM Wazi, event-driven automation, and developer productivity solutions. \nParticipating in disaster recovery planning, testing, and resiliency improvements utilizing GDPS, Global Mirror, and Metro Mirror technologies. \nImproving platform observability, monitoring, automation, and operational excellence through proactive engineering practices and modern monitoring solutions. \nProviding technical leadership, mentoring team members, and partnering with business, technology, vendor, and application development teams to deliver reliable infrastructure services. \nFidelity’s Onsite Working Model\nFidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.\nCertifications:\nCategory:\nInformation TechnologyPlease be advised that Fidelity’s business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.","description_format":"text","description_chars":6595,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Continuous learning"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Wealth Management & Financial Advisors","Asset Management & Funds","Online Brokerage & Trading Platforms"],"lifecycle":[{"event":"open","at":"2026-10-01T19:45:02Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":3,"expected_fill_days":39,"reasons":["conf:0","velocity","win:early","comp:brand"],"computed_at":"2026-10-05T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/fidelity-mainframe-operating-systems-engineer","json_url":"https://alion.io/job/fidelity-mainframe-operating-systems-engineer.json","meta":{"generated_at":"2026-10-06T00:17:40Z","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","counted_by":"address","units_charged":1,"used_today":346,"day_limit":5000,"remaining_today":4654,"minute_limit":60,"resets_at":"2026-10-07T00:00:00Z"}},"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":21095},"rest":"https://alion.io/mcp/rest/get_company?id=21095"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffidelity-mainframe-operating-systems-engineer"},{"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%2Ffidelity-mainframe-operating-systems-engineer"},{"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%2Ffidelity-mainframe-operating-systems-engineer"},{"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/fidelity-mainframe-operating-systems-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffidelity-mainframe-operating-systems-engineer"}]}