{"id":2346782,"url":"https://alion.io/job/hornetsecurity-senior-site-reliability-engineer","title":"Senior Site Reliability Engineer","company":{"id":51908,"name":"Hornetsecurity","domain":"hornetsecurity.com","url":"https://alion.io/company/hornetsecurity","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":{"grade":"C","score":56,"open_postings":92,"ghost_share":0.739,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-15T05:46:00Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"ArgoCD","optional":false},{"name":"CI/CD","optional":false},{"name":"Confluence","optional":false},{"name":"GitLab CI","optional":false},{"name":"GitOps","optional":false},{"name":"Jira","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Puppet","optional":false},{"name":"Terraform","optional":false}],"status":"live","first_seen_at":"2025-12-04T15:28:32Z","employer_posted_date":"2025-12-04","last_verified_at":"2026-10-15T15:22:46Z","board_verified":true,"closed_at":null,"days_open":315,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":314},"description":"Intro\nHornetsecurity’s Service Reliability (SR) team operates the infrastructure behind our email security and cybersecurity services. We process more than 200 million analyzed emails and scan over 100 million websites every day. Our infrastructure includes more than 4,000 servers, over 300 Kubernetes nodes and several hundred petabytes of data, in a 24/7 environment serving customers worldwide.\nFollowing Vade’s integration into Hornetsecurity and Hornetsecurity’s acquisition by Proofpoint, our product and platform landscape continues to evolve. The SR team owns platform engineering across systems, networking and database services. Some mature, business-critical services need to be maintained, consolidated and modernized; other capabilities are still being designed and built.\nAs a Senior SRE, you will design, build, deliver and operate tailored platforms, primarily for internal product teams. You will take them from requirements and architecture through automation, deployment, production operations and ongoing improvement. Quality of Service guides our decisions: we aim to make services more reliable, maintainable and useful to customers.\nYour Job\nProduct & Platform Ownership\nOwn the technical lifecycle of platforms for one or more internal product teams, from requirements discovery and architecture to production operation and evolution.\nTurn product needs into platform designs, defining capacity, availability, performance, dependencies and operational requirements.\nLead technical design discussions and reviews. Make trade-offs clear, challenge assumptions constructively and help teams address reliability and scaling risks.\nShare proven patterns and production learnings across teams, and help engineers apply them to their services.\nWork across Linux, Kubernetes, networking and database services as part of the SR team’s shared engineering scope.\nAutomation & Platform Delivery\nAutomate Linux configuration and infrastructure operations using Puppet and scripting.\nBuild and maintain delivery workflows with GitLab CI/CD. Use Argo CD to deploy and reconcile Kubernetes workloads through GitOps.\nUse Terraform where appropriate to provision and evolve infrastructure.\nImprove platform delivery with reusable automation, safe rollout and rollback procedures, and clear operational runbooks.\nUse Jira to coordinate project work, tickets and changes with internal customers. Work with issue types such as user stories, tasks and change requests, as well as workflows, filters and automation. Use Confluence for architecture and operational documentation.\nReliability & Performance\nDefine user-relevant SLIs and SLOs with product teams, assess service performance against them and turn reliability gaps into engineering work.\nReview production readiness, including capacity, dependencies, failure modes, recovery procedures, monitoring, alerting and rollback plans.\nParticipate in the production on-call rotation, coordinate incident response, lead root-cause analysis and follow corrective actions through to completion.\nIdentify scaling and reliability risks early, and validate architectural changes against expected traffic, failure scenarios and recovery objectives.\nObservability & Monitoring\nDefine how each platform exposes service health through actionable metrics, logs and traces.\nBuild dashboards and alerts around user impact and service objectives, reducing noisy alerts and improving time to detection.\nWork with developers to instrument services and use production evidence to guide diagnosis and reliability improvements.\nUse the monitoring and logging tools suited to each environment, including Icinga in selected contexts and the Elastic Stack where applicable.\nYour Profile\nYou have 5 to 10 years of experience in Linux administration and infrastructure engineering. You have taken technical ownership beyond day-to-day operations and can move between system-level diagnosis, platform architecture and product discussions. You can explain your decisions and use operational evidence to improve them.You communicate clearly in French and English. You bring a fresh perspective, question established approaches constructively and propose practical improvements while protecting service quality.\nStrong Linux expertise is essential. Additional experience in these areas is an asset:\nInfrastructure and platforms: virtualization, private cloud infrastructure, Kubernetes, GitLab CI/CD, Argo CD / GitOps, and some experience with Terraform.\nObservability and reliability: monitoring, Icinga in selected environments, ELK / Elastic Stack, backup and business continuity.\nAutomation: Puppet, Ansible, scripting and automation workflows.\nJira and Confluence, or equivalent project and collaboration tools. Experience with project management, ticketing, change workflows, issue types, filters and automation is useful.\nInterest in AI-assisted engineering. Familiarity with several models, agent-based workflows or reusable agent skills is welcome; curiosity and practical judgement matter.\nWe will provide training on our internal tools and the group’s specific processes.Your Benefits\nExecutive status\nFixed-hours arrangement\n5 weeks of statutory paid vacation + RTT\n€10 meal vouchers, with €5.92 covered by Hornetsecurity\n100% coverage of public transportation costs\nHealth and life insurance coverage (Axa)\nSubsidized sports and wellness programs\nAccess to an inter-company daycare\nInternational exchange program\nJoin us at a pivotal point in our growth, work in a close-knit team, and develop in an international and multicultural company.","description_format":"text","description_chars":5580,"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":[{"language":"French","level":"All levels","optional":false}]},"benefits":["Insurance coverage","Life insurance","Wellness"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security","Email Security"],"lifecycle":[{"event":"open","at":"2026-10-12T12:51:10Z"}],"visa":[],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.202,"p_room":0.28,"age_days":314,"expected_fill_days":38,"reasons":["conf:6","stale_co","velocity","ghost","win:tail","crowd:"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/hornetsecurity-senior-site-reliability-engineer","json_url":"https://alion.io/job/hornetsecurity-senior-site-reliability-engineer.json","meta":{"generated_at":"2026-10-15T16:26:23Z","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":25033,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":51908},"rest":"https://alion.io/mcp/rest/get_company?id=51908"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fhornetsecurity-senior-site-reliability-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%2Fhornetsecurity-senior-site-reliability-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%2Fhornetsecurity-senior-site-reliability-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/hornetsecurity-senior-site-reliability-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fhornetsecurity-senior-site-reliability-engineer"}]}