{"id":2097289,"url":"https://alion.io/job/sixworks-senior-platform-engineer-2","title":"Senior Platform Engineer","company":{"id":1896349,"name":"SiXworks","domain":"sixworks.net","url":"https://alion.io/company/sixworks","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","truth_index":{"grade":"A","score":95,"open_postings":19,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":144,"computed_at":"2026-10-10T05:45:15Z"}},"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":["Cheltenham, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":72000,"max_usd":145000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":40},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GitHub Actions","optional":false},{"name":"Kubernetes","optional":false},{"name":"Terraform","optional":false}],"status":"live","first_seen_at":"2026-10-08T17:16:55Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-10T21:58:15Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Work on Technology That Protects What Matters\nAt SiXworks, we build secure digital solutions that support Defence and National Security missions. Our teams work on complex problems where reliability, security, and speed of innovation matter.\nWe’re looking for a SeniorPlatform Engineerwho enjoys solving difficult technical challenges and wants their work to have real operational impact.\nWorking location will be Cheltenham. Hybrid working available.\nWhat You’ll Do\nAs a Senior Platform Engineer, you'll showcase your expertise by driving technical direction, setting the technical strategy for deploying new solutions in challenging environments and enhancing existing platforms. You embrace the \"MVP\" approach, designing & building incrementally and learning quickly from failures. You love tinkering and discovering innovative solutions. You're comfortable setting technical direction, eliciting ideas from both your team and our customers, and confident managing and supporting production systems, balancing reliability, performance, and operational excellence in live environments.\nWe believe in using the right tools and technologies to deliver the best outcomes for our customers. While expertise in every tool isn't required, we value experience with similar technologies and an understanding of the problems they solve. Knowledge of GitHuband GitHub Actions, Terraform, Kubernetes, Bashwould be desirable, along with all of your known DevOps technologies and tools, coupled with experience working within a variety of Cloud based platforms.\nYou'll join a small, high-performing team that supports you from day one and throughout your journey with us. The challenges you'll tackle are unique, whether due to security needs or location constraints, offering you a chance to make a significant impact.\nWe are committed to your professional growth, offering continuous learning opportunities, mentorship, and the chance to work with cutting-edge technologies. Your development is our priority, and we provide the time and support you need to thrive and advance in your career.\nWhat We’re Looking For\nWe value people who take ownership, think critically, and enjoy working as part of a collaborative team tackling complex challenges. You don’t need to tick every box, but you should apply if:\nYou care about customer outcomes, and you want to know and understand who we work with. \nYou love finding new ways to solve problems. \nYou’re comfortable working in a team that deals with ambiguity. \nYou have experience operating production environments supporting live users.\nJust as important are curiosity, strong problem solving ability, and the motivation to continuously improve how technology is designed and delivered.\nAbout SiXworks\nSiXworks is a specialist digital innovation partner delivering secure, mission-critical technology to Defence and National Security organisations. We focus on digital experimentation, secure-by-design architecture, cloud technologies, and rapid application development to help our customers move faster and stay ahead of evolving challenges.\nOur team combines expertise from across technology, business, and operational backgrounds including the armed forces creating a collaborative environment where practical thinking and innovation thrive.\nWhy Join Us\nOur culture is guided by six principles: Agility, Security, Innovation, Quality, Collaboration and Inclusivity, our North Star for how we work. SiXworks is a leading provider of secure digital solutions, specialising in digital experimentation and focused on fail-safe-fast cutting-edge technology solutions deployed in highly secure environments.\nAs an end-to-end digital innovation and delivery partner, we turn complex challenges into mission-critical digital advantages. This is a thrilling time for us, with ambitious plans for growth. We are looking for brilliant, experienced, driven and self-motivated people to join the team on our journey.\nWe offer competitive salaries and a package that supports your wellbeing and development, including 25 days annual leave + bank holidays, free Private Medical cover and Life Assurance, Generous pension, Bonus and Professional development and training support. Additionally we have a newly re-furbished office space with a modern reception and facilities.\nA word on UK Security Clearance\nDue to the secure nature of the position and working environment, you must have or be eligible to obtain higher levels of Government Security Clearance. More details relating to UK Security Clearance can be found here:\nUnited Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)\nInterested?\nPlease apply!","description_format":"text","description_chars":4649,"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":[]},"benefits":["Annual leave","Continuous learning","Hybrid work","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-08T17:16:55Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":144,"reasons":["conf:0","velocity","win:early"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/sixworks-senior-platform-engineer-2","json_url":"https://alion.io/job/sixworks-senior-platform-engineer-2.json","meta":{"generated_at":"2026-10-11T01:32:34Z","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","counted_by":"address","units_charged":1,"used_today":2329,"day_limit":5000,"remaining_today":2671,"minute_limit":60,"resets_at":"2026-10-12T00:00:00Z"}},"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":1896349},"rest":"https://alion.io/mcp/rest/get_company?id=1896349"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsixworks-senior-platform-engineer-2"},{"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%2Fsixworks-senior-platform-engineer-2"},{"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%2Fsixworks-senior-platform-engineer-2"},{"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/sixworks-senior-platform-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsixworks-senior-platform-engineer-2"}]}