{"id":1555808,"url":"https://alion.io/job/reaktor-senior-platform-engineer-defence-security","title":"Senior Platform Engineer (Defence & Security)","company":{"id":34008,"name":"Reaktor","domain":"reaktor.com","url":"https://alion.io/company/reaktor","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":79,"open_postings":22,"ghost_share":0.273,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":91,"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":"structured","locations":["Helsinki, Finland"],"countries":["FI"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":123000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3074},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"CI/CD","optional":false},{"name":"Configuration Management","optional":false},{"name":"IAM","optional":false},{"name":"Kubernetes","optional":false},{"name":"KVM","optional":false},{"name":"OpenShift","optional":false},{"name":"OpenStack","optional":false},{"name":"PowerShell","optional":false},{"name":"Puppet","optional":false},{"name":"Python","optional":false},{"name":"SaltStack","optional":false},{"name":"Terraform","optional":false},{"name":"VMWare","optional":false},{"name":"GitHub","optional":true},{"name":"GitLab CI","optional":true},{"name":"Grafana","optional":true},{"name":"Jenkins","optional":true},{"name":"OpenSearch","optional":true},{"name":"Prometheus","optional":true}],"status":"live","first_seen_at":"2026-09-30T11:42:30Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-15T02:39:50Z","board_verified":true,"closed_at":null,"days_open":14,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":14},"description":"Reaktor’s tech community is looking for a Senior Platform Engineer to join our Defence & Security Business Unit in Helsinki.\nOur Defence & Security Unit brings together around 70 professionals working on technically demanding and societally meaningful projects. Here, you can take ownership of important technical decisions and build systems whose reliability and security genuinely matter.\nWe are looking for someone who enjoys designing and building large-scale on-premise and private cloud platforms. If you love working hands-on with IaC, CI/CD, security, and observability to solve complex infrastructure challenges alongside product teams and clients, you might be a great fit\nYour role is to turn complex, security-critical infrastructure into a reliable platform that development teams can build on.\nYou will design, build and operate on-premise infrastructure and private cloud platforms that support critical products and our clients’ business needs.\nYou will be part of both a consulting team working closely with the client and a productisation team bringing solutions to international markets. The role combines hands-on engineering, collaboration and technical decision-making.\nYour daily tasks include:\nDesigning, implementing and maintaining modern on-premise and private cloud environments, including GPU-enabled infrastructure for AI workloads, to help product teams deliver high-quality solutions.\n\nMaking sure security, isolation, and compliance are built into everything you create.\n\nEnabling scalable and resilient infrastructure that can grow with demand and keep the digital services running reliably on physical hardware and virtualization layers.\n\nAutomating as many routine tasks as possible to free up engineers time to focus on higher-value work.\n\nPromoting standardization through common tools, processes and configurations to reduce complexity, improve maintainability, and accelerate development cycles.\n\nActing as a trusted advisor by working closely with product teams and other stakeholders to understand the requirements and provide the infrastructure support they need.\n\nSupporting Reaktor’s Defence & Security Business Unit with sales and proposal work as an infrastructure expert.\n\nYou enjoy turning complex, fragmented infrastructure into streamlined, scalable platforms that let teams move quickly and reliably.\nWhat we are looking for:\nHands-on experience in platform/ infra/ DevOps roles. We don’t have a hard limit with years of experience, but we’ve noticed that these competencies often take 8+ years to accumulate.\n\nDeep expertise in on-premise infrastructure, including production experience with virtualization technologies (e.g., VMware vSphere, KVM, OpenStack), networking, firewalls, IAM, and hardware-level monitoring.\n\nExperience with at least one IaC/configuration management tool applicable to bare-metal or private clouds (e.g. Terraform, Ansible, SaltStack, Puppet)\n\nSolid scripting / programming skills for automation (e.g. Python/Bash/PowerShell)\n\nStrong understanding of application architectures, container orchestration (e.g., Kubernetes, OpenShift), and the ability to read and reason about code to debug platform issues\n\nExperience implementing strict security best practices in air-gapped or highly regulated environments following industry standards and compliance\n\nFluency in both Finnish and English (written & spoken)\n\nWillingness to work 100% on-site\n\nThis position requires Finnish citizenship due to client and security regulations. The selected candidate must successfully complete a security clearance process.\n\nNice-to-have skills:\nStrong CI/CD experience (e.g. GitLab CI, Jenkins, GitHub Enterprise Server or similar)\n\nPractical experience with self-hosted observability stacks (e.g. Prometheus, Grafana, ELK/Opensearch)\n\nCustomer oriented mindset, with experience in partnering closely with clients/ stakeholders.\n\nWhy join us?\nFor two decades, we’ve been developing qualities and capabilities for adapting, reacting, and supporting change - building Reaktor to hold up in a fast-paced environment while ensuring the well-being of our people.\nWhile working at Reaktor, we’ll provide you with:\nThe ability to impact how you work. Together with the client, your team chooses the approach, technologies, and methodologies you think will work best in any given situation\n\nA community with as much support as your heart desires\n\nA team that’s not only experienced but considerate as well - they all want you to succeed\n\nA sustainable work-life balance and support for your daily life outside of work. (e.g., free moving day, Reaktor car share, sick child care services, office space to use for your private events, etc.)\n\nAn opportunity to grow as a professional. In addition to the day-to-day work, we offer internal training courses, community events to discuss hot topics in tech and design\n\nMany different hobby clubs, from winter swimming and running to knitting and archery, that bring people together outside of (and sometimes inside) office hours. Many of these are supported by Reaktor\n\nDiversity, equity, and inclusion\nTogether, we are committed to making Reaktor an environment that embraces and values all of our employees for the whole of who they are. We encourage applicants from all backgrounds to apply, knowing that studies show that members of underrepresented communities don’t apply for jobs unless they fully satisfy all of the requirements. If you're thinking twice about applying for this reason, we invite you to send us your application anyway. You could be just the person we're looking for. Read more about our DEI work here.","description_format":"text","description_chars":5626,"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":"Finnish","level":"All levels","optional":false},{"language":"English","level":"All levels","optional":false}]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["UI/UX Design","IT Consulting & Digital Transformation","Custom Software Development","AI Consulting & Integration"],"lifecycle":[{"event":"open","at":"2026-10-01T01:58:11Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":14,"expected_fill_days":91,"reasons":["conf:3","velocity","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/reaktor-senior-platform-engineer-defence-security","json_url":"https://alion.io/job/reaktor-senior-platform-engineer-defence-security.json","meta":{"generated_at":"2026-10-15T06:54:56Z","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":10377,"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":34008},"rest":"https://alion.io/mcp/rest/get_company?id=34008"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Freaktor-senior-platform-engineer-defence-security"},{"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%2Freaktor-senior-platform-engineer-defence-security"},{"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%2Freaktor-senior-platform-engineer-defence-security"},{"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/reaktor-senior-platform-engineer-defence-security\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Freaktor-senior-platform-engineer-defence-security"}]}