{"id":165487,"url":"https://alion.io/job/second-front-systems-senior-platform-engineer-united-kingdom","title":"Senior Platform Engineer (United Kingdom)","company":{"id":58794,"name":"Second Front Systems","domain":"secondfront.com","url":"https://alion.io/company/second-front-systems","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"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":"explicit","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":110000,"max":130000,"currency":"GBP","period":"year","gross":null,"usd_annual":174015},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Agile","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Gemini","optional":false},{"name":"GitLab","optional":false},{"name":"Go","optional":false},{"name":"Google Workspace","optional":false},{"name":"Kubernetes","optional":false},{"name":"NIST 800-53","optional":false},{"name":"Pulumi","optional":false},{"name":"Rest API","optional":false},{"name":"SIEM","optional":false},{"name":"Slack","optional":false}],"status":"live","first_seen_at":"2026-08-07T15:58:26Z","employer_posted_date":"2026-08-07","last_verified_at":"2026-10-22T21:43:30Z","board_verified":true,"closed_at":null,"days_open":76,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":76},"description":"Second Front Systems (2F) is seeking an ambitious and capable Platform Engineer to join our UK team. We are a dynamic, fast-growing defence technology company at the intersection of cutting-edge technology and national security, committed to delivering transformative solutions that empower the UK’s defenders. This is an opportunity to play a pivotal role in establishing and scaling our platform capability in the UK market.\nAt 2F we thrive on innovation and purpose, combining a start-up’s agility with a clear mission to support national security. You will be at the forefront of the DevSecOps engineering behind the deployment and scaling of our Game Warden platform - accelerating the secure adoption of mission-critical SaaS solutions for UK government and defence. If you value ingenuity, collaboration, and impact, we want to hear from you.\nSecurity Clearance Requirement: This position requires the holder to hold, or be eligible to obtain, Developed Vetting (DV) clearance. Candidates must be UK nationals (or hold dual nationality with the UK as one nationality) and have sufficient UK residency history to be sponsored for DV. Active DV clearance is strongly preferred. As this role involves work within classified and air-gapped environments, clearance eligibility is essential and non-negotiable.\nLocation: Primarily remote (UK-based), with frequent travel to customer and partner sites, including Northwood and Corsham Defence Campus, and occasional travel to other UK government locations. Candidates must be based within the UK and willing to travel as operational demand requires. Note that work in air-gapped or classified environments will require on-site presence at accredited facilities.\nWhat You'll Do\nSupport the security and operations of Game Warden across air-gapped and classified environments, working directly with government partners and security teams.\n\nBuild and manage CI/CD pipelines that integrate DevSecOps best practices from development through to deployment.\n\nIntegrate and maintain SIEM and security tooling, ensuring observability and compliance across all deployed systems.\n\nBuild and implement scalable, secure cloud infrastructure using Kubernetes and Pulumi (Go-based), ensuring compliance with UK government and Ministry of Defence security requirements.\n\nWork cross-functionally to assess infrastructure needs, prioritise development, and deliver on product roadmap milestones in a fast-paced Agile environment.\n\nDocument your work thoroughly - from infrastructure to internal procedures - to ensure secure, repeatable, and auditable deployments.\n\nCollaborate directly with UK defence and government stakeholders to provision secure cloud resources and meet deployment and accreditation criteria in classified settings.\n\nContribute to R&D and experimentation needed to advance platform capabilities in secure and disconnected environments.\n\nAct as a senior technical resource, helping to shape 2F’s UK DevSecOps strategy and infrastructure standards.\n\nWhat You Bring\n5-7+ years of relevant experience in DevSecOps, systems engineering, and software development.\n\nSenior-level expertise designing and building cloud-native platforms using AWS, Azure, or GCP.\n\nExperience with Kubernetes, Docker, and cloud-native application orchestration.\n\nStrong proficiency in Golang or similar languages\n\nFamiliarity with UK and international compliance frameworks such as MOD Secure by Design, JSP 453, NCSC Cloud Security Principles, NIST 800-53.\n\nExperience deploying systems in air-gapped or classified environments.\n\nExperience building and maintaining secure CI/CD pipelines and integrating security throughout the SDLC.\n\nHands-on experience implementing or managing SIEM, monitoring, and alerting systems.\n\nUnderstanding of REST APIs, authentication flows, event-driven architecture, and microservice patterns.\n\nExcellent written and verbal communication skills, with strong documentation habits.\n\nComfortable working independently and in distributed teams, managing competing priorities across complex projects.\n\nProficient in using AI tools (such as Claude and Gemini) to accelerate and enhance day-to-day work, from code generation, debugging, and documentation to research and problem-solving - with sound judgement about where AI adds value and where human oversight is required.\n\nCertified AWS, Google or Azure Solutions Architect.\n\nPrior experience working within UK defence, national security, or regulated government environments.\n\nExperience working in early-stage or high-growth start-up environments.\n\nFamiliarity with UK accreditation and risk-management processes and environments (e.g., MOD Secure by Design).\n\nFamiliarity with GitLab, Google Workspace, and Slack.\n\nA genuine interest in national security and mission-driven innovation.\n\nThe base salary for this position will fall between £110,00000 - £130,000 Your ultimate compensation will be determined by professional background, technical proficiency, seniority, and regional cost factors. Furthermore, this opportunity includes potential eligibility for equity awards and discretionary bonuses, rounding out a comprehensive total rewards offering.\nSuccess at 2F Looks Like:\nViewing obstacles as opportunities for growth\n\nHaving a bias toward action and tangible, measurable results\n\nStriving to be both compassionate and direct with your feedback\n\nBeing team-oriented and inclusive with your actions\n\nPerks & Benefits:\nAs a public benefit company, we are a team of purpose-driven trailblazers transforming the future of national security. We hire the best to do their best and are committed to providing the perks and benefits you need to be successful, both inside and outside the workplace.\nCompetitive salary benchmarked to UK market\n\nPrivate healthcare (medical, dental, and optical)\n\nPension scheme with employer contribution\n\nWellness perks (fitness, mental health resources)\n\nEquity incentive plan\n\nTechnology and home-office stipend\n\nAnnual professional development budget\n\nFlexible paid time off plus UK public holidays\n\nEnhanced parental leave\n\nRemote-first working with travel expenses covered\n\nReferral bonus scheme\n\nVisit our careers page to learn more.\nUK Employment Information \nSecond Front Systems is an equal opportunities employer. We are committed to building a diverse and inclusive team and welcome applications regardless of age, disability, gender reassignment, marriage and civil partnership status, pregnancy and maternity, race, religion or belief, sex, or sexual orientation, in accordance with the Equality Act 2010.\nApplicants have the right to work in the United Kingdom. Due to the DV clearance requirement, candidates must be UK nationals or hold qualifying dual nationality and must have resided primarily in the UK for the period required by UKSV vetting guidelines. Sponsorship for this role is not available.\nThis role is a full-time permanent position. Salary will be discussed during the recruitment process. We are happy to discuss reasonable adjustments at any stage of the application process for candidates with a disability or long-term health condition.\nWho We Are:\nAt Second Front Systems (2F), we equip defence and national security professionals with access to emerging technologies. Founded with firsthand experience of the dangers that outdated technology poses in operational environments, our team is dedicated to fast-tracking government access to disruptive, commercially-proven technology for national security missions.\nOur Game Warden platform is a fully managed and compliant DevSecOps environment that accelerates the accreditation and deployment of SaaS applications for government use. Learn more at www.secondfront.com.\nOne last thing:\nWe are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.\nAre you ready to join our team:\nTo apply, click the “Apply for This Job” button at the top or bottom of this page and complete the application form. This position will remain open until filled, and applications will be reviewed on a rolling basis.","description_format":"text","description_chars":8311,"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":["Equity","Parental leave","Professional development"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Government","Security Compliance"],"lifecycle":[{"event":"open","at":"2026-08-07T15:58:26Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (UK Expansion Worker, Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: UK Expansion Worker; Global Business Mobility: Senior or Specialist Worker; Skilled Worker","cap_exempt":false,"checked_at":"2026-10-22T06:27:10+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":32,"band":"fade","label":"Fading","p_open":1,"p_active":0.721,"p_room":0.44,"age_days":75,"expected_fill_days":66,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-22T06:10:10Z"},"pay":{"stated_usd_annual":174015,"is_top_pay":true},"html_url":"https://alion.io/job/second-front-systems-senior-platform-engineer-united-kingdom","json_url":"https://alion.io/job/second-front-systems-senior-platform-engineer-united-kingdom.json","meta":{"generated_at":"2026-10-23T01:18:01Z","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":2174,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":58794},"rest":"https://alion.io/mcp/rest/get_company?id=58794"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsecond-front-systems-senior-platform-engineer-united-kingdom"},{"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%2Fsecond-front-systems-senior-platform-engineer-united-kingdom"},{"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%2Fsecond-front-systems-senior-platform-engineer-united-kingdom"},{"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/second-front-systems-senior-platform-engineer-united-kingdom\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsecond-front-systems-senior-platform-engineer-united-kingdom"}]}