{"id":3659362,"url":"https://alion.io/job/euroclear-senior-mainframe-engineer","title":"Senior Mainframe Engineer","company":{"id":61,"name":"Euroclear","domain":"euroclear.com","url":"https://alion.io/company/euroclear","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":81,"open_postings":8,"ghost_share":0,"stale_share":0.75,"repost_share":0,"time_to_fill_p50_days":53,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Poland"],"countries":["PL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"TCP/IP","optional":false}],"status":"live","first_seen_at":"2026-11-02T00:00:00Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-04T14:40:52Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Division: Group Technology Services\nAs a Mainframe Hardware & Network Engineer, you will play a crucial role in ensuring the availability, connectivity, performance, and resilience of our z/OS infrastructure.\nRole Overview\nAs a Mainframe Hardware & Network Engineer, you will play a key role in managing, maintaining, and evolving the hardware and network infrastructure supporting our z/OS environment.\nYour responsibilities will include:\nManaging and maintaining mainframe hardware and connectivity configurations, including CHPID, channel paths, and I/O definitions.\nCreating, maintaining, and deploying IODF configurations.\nManaging and troubleshooting TCP/IP configurations and network connectivity within the z/OS environment.\nManaging processor resources: CP, zIIP, IFL, memory and capacity.\nPlanning and implementing hardware and network changes while ensuring high availability, resilience, and minimal production impact.\nCollaborating with Mainframe, Storage, Security, and other cross-functional IT teams.\nMandatory Technical Requirements:\nStrong hands-on experience with IBM Z mainframe hardware and z/OS infrastructure.\nProven expertise in IODF creation and maintenance, CHPID configuration, and I/O connectivity.\nStrong knowledge of z/OS Communications Server and TCP/IP configuration and troubleshooting.\nGood understanding of mainframe network architecture, including OSA adapters, network interfaces, routing, and connectivity.\nStrong troubleshooting skills for hardware, I/O, and network-related incidents in a highly available mainframe environment.\nNice-to-Have Skills\nExperience with IBM Z hardware migration, installation, upgrade, or datacenter migration activities.\nExperience with the installation and customization of CFT, Connect Express, and Connect Direct would be highly appreciated.\nKnowledge of Parallel Sysplex, coupling connectivity, HMC, Support Element, and mainframe hardware management concepts.\nKnowledge of VTAM, SNA, Enterprise Extender, or related z/OS networking technologies.\nKnowledge of scripting and automation languages such as REXX.\nSoft Skills\nStrong collaboration and communication abilities.\nAnalytical and methodical mindset for troubleshooting complex hardware and network issues.\nClear written and verbal communication in English.\nCommitment to documentation and knowledge sharing.\nAvailability\nPlease note that flexibility to work outside standard business hours is required. Production launches and major hardware or network changes typically occur after 17:00 or on Saturdays, and participation in on-call rotations during nights and weekends is expected.\nPlease note that this is a permanent position, and we do not offer freelance/contract arrangement for the role.","description_format":"text","description_chars":2725,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Stock Exchanges & Market Infrastructure","Custody & Fund Administration"],"lifecycle":[{"event":"open","at":"2026-11-03T03:12:54Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":53,"reasons":["conf:6","velocity","win:early"],"computed_at":"2026-11-04T06:34:25Z"},"pay":null,"html_url":"https://alion.io/job/euroclear-senior-mainframe-engineer","json_url":"https://alion.io/job/euroclear-senior-mainframe-engineer.json","meta":{"generated_at":"2026-11-04T14:53:06Z","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":22585,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"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":61},"rest":"https://alion.io/mcp/rest/get_company?id=61"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Feuroclear-senior-mainframe-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%2Feuroclear-senior-mainframe-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%2Feuroclear-senior-mainframe-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/euroclear-senior-mainframe-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Feuroclear-senior-mainframe-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3659362}},{"tool":"search_jobs","arguments":{"company":"euroclear.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3659362},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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