{"id":3468356,"url":"https://alion.io/job/n-ix-senior-network-design-engineer","title":"Senior Network Design Engineer","company":{"id":13248,"name":"N-iX","domain":"n-ix.com","url":"https://alion.io/company/n-ix","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":84,"open_postings":11,"ghost_share":0,"stale_share":0.636,"repost_share":0,"time_to_fill_p50_days":37,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Networking","role_family":"Networking","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","Ukraine"],"countries":["PL","UA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":22000,"max_usd":53000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":731},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-29T13:01:01Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-02T22:24:42Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"We are looking for a Senior Network Design Engineer to join our team!\nAs an OT Network Design Engineer, you will be responsible for translating approved security and segmentation architectures into detailed, implementation-ready network, firewall and IDS designs across industrial environments. Your role will focus on enabling secure and resilient OT connectivity by converting security requirements, zones and conduits into practical network designs, while working closely with Network Operations, project teams and local site stakeholders to support successful implementation.\nResponsibilities:\nTranslate approved OT security and segmentation architecture into detailed, implementation-ready network designs. \nTranslate defined zones, segments and conduits into VLANs, subnets, routing, firewall boundaries and network connectivity. \nDevelop detailed firewall designs, including interfaces/zones, traffic flows, rule requirements, protocols, ports and services. \nAnalyse firewall logs and network traffic to identify and validate OT communication dependencies. \nTranslate approved OT IDS architecture into detailed deployment designs, including sensor/collector placement, connectivity and traffic visibility. \nDefine SPAN/TAP and traffic-mirroring requirements required for IDS monitoring. \nDevelop detailed designs suitable for brownfield OT/industrial environments, considering existing infrastructure and operational dependencies. \nProduce Low-Level Designs (LLDs) and technical documentation suitable for implementation. \nWork closely with Network Operations, project teams and local site stakeholders during design and implementation. \nSupport implementation, troubleshooting and validation to ensure the deployed network, firewall and IDS configurations conform to the approved architecture and design.\nRequirements:\nMinimum 5 years of relevant experience in IP networking and network design, preferably including OT/industrial environments.\nStrong knowledge of IP networking, VLANs, subnets, routing and network segmentation.\nStrong hands-on knowledge of firewall technologies, including zones/interfaces, routing, NAT, access-control policies, logging and traffic analysis.\nExperience designing and implementing firewall-based segmentation in brownfield OT environments.\nPractical knowledge of OT/industrial networks, including Purdue architectures, industrial DMZs and industrial protocols.\nExperience with OT IDS technologies and their deployment in industrial networks.\nUnderstanding of SPAN, TAP, traffic mirroring, IDS sensors/collectors and network visibility requirements.\nStrong ability to analyse firewall logs, network traffic and communication flows.\nGood understanding of OT assets, protocols, services and communication dependencies.\nAbility to translate architecture and security requirements into detailed network, firewall and IDS designs.\nStrong technical documentation skills, particularly Low-Level Designs and implementation-ready network documentation.\nStrong collaboration skills across Network Operations, Security Architecture, project teams and local site stakeholders.\nWe offer*:\nFlexible working format - remote, office-based or flexible\nA competitive salary and good compensation package\nPersonalized career growth\nProfessional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)\nActive tech communities with regular knowledge sharing\nEducation reimbursement\nMemorable anniversary presents\nCorporate events and team buildings\nOther location-specific benefits\n*not applicable for freelancers","description_format":"text","description_chars":3576,"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":["Flexible schedule","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","IT Outsourcing & Dedicated Teams","Custom Software Development","AI Consulting & Integration"],"lifecycle":[{"event":"open","at":"2026-10-29T16:06:10Z"}],"visa":[],"liveness":{"score":70,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.695,"p_room":1,"age_days":3,"expected_fill_days":37,"reasons":["conf:1","stale_co","urgency","velocity","win:early","comp:brand"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/n-ix-senior-network-design-engineer","json_url":"https://alion.io/job/n-ix-senior-network-design-engineer.json","meta":{"generated_at":"2026-11-03T02:03:00Z","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":2683,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"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":13248},"rest":"https://alion.io/mcp/rest/get_company?id=13248"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fn-ix-senior-network-design-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%2Fn-ix-senior-network-design-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%2Fn-ix-senior-network-design-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/n-ix-senior-network-design-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fn-ix-senior-network-design-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3468356}},{"tool":"search_jobs","arguments":{"company":"n-ix.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3468356},"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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