{"id":4130575,"url":"https://alion.io/job/cisco-systems-principal-software-engineer-7","title":"Principal Software Engineer","company":{"id":90,"name":"Cisco Systems","domain":"cisco.com","url":"https://alion.io/company/cisco-systems","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":84,"open_postings":285,"ghost_share":0.049,"stale_share":0.474,"repost_share":0.091,"time_to_fill_p50_days":26,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","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":["Dublin, Ireland","Zurich, Switzerland"],"countries":["IE","CH"],"hiring_countries":["IE"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cilium Tetragon","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false}],"status":"live","first_seen_at":"2026-11-10T00:00:00Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-12T02:21:45Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Meet the Team:\nThe team you will join is the Isovalent at Cisco team where you will work with Linux kernel maintainers and system engineers to deliver and support BPF. This team builds the core components that are the foundation for Cisco products, such as Tetragon, Live Protect and Hypershield.\nYour Impact\nAs a Principal level engineer to develop the next generation of Linux kernel, BPF, BTF and system level tooling in support of BPF and the Live Protect product family. This position will be responsible for interacting with security and threat research teams (both internal and external), defining the architecture and design for the internal engineering teams, and developing early stage ideas to released products including contributing to the upstream open source Linux communities including the Linux kernel organization.\nMinimum Qualifications:\n12+ years of experience with systems level programming in the Linux kernel, associated systems tooling or compilers.\n 12+ years of open source experience working on open source projects, examples include Kubernetes, BPF, LLVM, and the Linux kernel.\nFamiliarity with presenting work in technical forums, such as technical conferences, IETF, technical papers, whitepapers, etc. \nPreferred Qualifications:\nExperienced contributor to the Linux kernel\nFamiliarity with compiler technologies such as clang and gcc.\nMaintainer or top contributor to BPF projects and code.\nWhy Cisco?\nAt Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era - and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.\nFueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere.\nWe are Cisco, and our power starts with you.","description_format":"text","description_chars":2267,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Ireland","iso":"IE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","Unified Communications","Endpoint Security","Observability & APM"],"lifecycle":[{"event":"open","at":"2026-11-12T02:21:45Z"}],"visa":[{"country":"IE","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Irish employment permits in 12 months: 23","filings_12m":23,"filings_prev_12m":2,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Employment permits","cap_exempt":false,"checked_at":"2026-11-11T07:38:50+00:00","sources":["Department of Enterprise, Trade and Employment: employment permits issued to companies"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":2,"expected_fill_days":26,"reasons":["conf:1","win:early","comp:brand"],"computed_at":"2026-11-12T03:38:29Z"},"pay":null,"html_url":"https://alion.io/job/cisco-systems-principal-software-engineer-7","json_url":"https://alion.io/job/cisco-systems-principal-software-engineer-7.json","meta":{"generated_at":"2026-11-12T03:38:29Z","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":7926,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":90},"rest":"https://alion.io/mcp/rest/get_company?id=90"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcisco-systems-principal-software-engineer-7"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fcisco-systems-principal-software-engineer-7"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fcisco-systems-principal-software-engineer-7"},{"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/cisco-systems-principal-software-engineer-7\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcisco-systems-principal-software-engineer-7"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4130575}},{"tool":"search_jobs","arguments":{"company":"cisco.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4130575},"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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