{"id":3971391,"url":"https://alion.io/job/propylon-principal-security-engineer","title":"Principal Security Engineer","company":{"id":1902709,"name":"Propylon","domain":"propylon.com","url":"https://alion.io/company/propylon","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":{"grade":"A","score":93,"open_postings":52,"ghost_share":0,"stale_share":0,"repost_share":0.462,"time_to_fill_p50_days":null,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Security","role_family":"Security","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Maidenhead, United Kingdom"],"countries":["GB"],"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":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"DLP","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Zero Trust","optional":false},{"name":"CloudFormation","optional":true},{"name":"GitHub","optional":true},{"name":"GitHub Actions","optional":true},{"name":"ISO 27001","optional":true},{"name":"Kubernetes","optional":true},{"name":"Microsoft Defender","optional":true},{"name":"Microsoft Entra ID","optional":true},{"name":"PowerShell","optional":true},{"name":"Python","optional":true},{"name":"Rest API","optional":true},{"name":"SOC 2","optional":true},{"name":"Terraform","optional":true},{"name":"Wiz","optional":true}],"status":"live","first_seen_at":"2026-11-09T16:16:14Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T16:16:14Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Job Purpose\nThe Senior Security Engineer is responsible for designing, implementing and continuously improving enterprise security capabilities across cloud, infrastructure, software engineering and end-user environments.\nWorking closely with Security Operations, Security Governance, Engineering, Infrastructure and Technology teams, the role will develop and maintain the security platforms, integrations, automation and technical guardrails that underpin the enterprise security strategy.\nThe successful candidate will combine deep technical expertise with strong stakeholder engagement skills and a passion for simplifying security through engineering.\nAbout Product & Technology\nProduct & Technology plays a pivotal role in aligning the organization with its strategic objectives and enhancing shareholder value. Product & Technology is responsible for establishing unified standards and governance practices throughout the company. Additionally, we oversee the development and maintenance of core applications essential for the seamless operation of various functions across the organization. We are committed to driving and executing future roadmaps that are in line with the overall strategic direction of RWS.\nWith a global reach, Product & Technology provides support services to over 7500 end users worldwide. We take pride in managing the information security operation and safeguarding all our assets. Our core functions encompass Enterprise & Technical Architecture, Network & Voice, Infrastructure, Service Delivery, Service Operations, Data & Analytics, Security & Quality Compliance, Transformation, Application Development, Enterprise Platforms, With a dedicated team of over 500 staff, Product & Technology ensures a strong presence across all regions, enabling efficient and effective support to our global operations.\nJob Overview\nKey Responsibilities\nSecurity Platform Engineering\nImplement and manage strategic security platforms across the enterprise.\nLead onboarding and integration of security tools into a centralised security ecosystem.\nDevelop standardised security services and reusable capabilities.\nReduce complexity through platform rationalisation and standardisation.\nImprove visibility across cloud, endpoint, identity and application environments.\nSecurity Automation\nDesign and implement automated security controls and workflows.\nIntegrate security tools through APIs and orchestration platforms.\nAutomate vulnerability management, compliance validation and security monitoring activities.\nEliminate manual processes wherever practical.\nDevelop Infrastructure as Code and policy-as-code capabilities.\nCloud Security Engineering\nBuild and maintain secure cloud security capabilities across Azure, AWS and SaaS platforms.\nImplement CSPM, workload protection and cloud-native security controls.\nDevelop secure landing zones and security baselines.\nCreate reusable cloud security patterns and reference architectures.\nSupport Zero Trust and identity-driven security initiatives.\nDevSecOps & Secure Software Delivery\nEmbed security controls into development pipelines.\nIntegrate SAST, DAST, SCA, secrets scanning and CI/CD security tooling.\nCreate secure development guardrails that support engineering productivity.\nDevelop reusable security patterns for development teams.\nEnable secure AI and cloud-native application delivery.\nIdentity & Data Protection\nAssist with implementation of modern identity security controls.\nSupport Privileged Access Management and access governance initiatives.\nDeploy and maintain DLP, data classification and information protection technologies.\nIntegrate identity, endpoint and data protection controls into a unified security architecture.\nEngineering Enablement\nPartner closely with development and infrastructure teams.\nProvide practical security guidance and technical leadership.\nPromote security-by-design and security-by-default principles.\nHelp teams adopt standardised security tooling and practices.\nAct as a security champion for engineering transformation activities.\nContinuous Improvement\nMonitor effectiveness of security controls.\nIdentify opportunities for increased automation and simplification.\nContribute to security architecture and platform roadmaps.\nSupport investigations, incident response activities and root cause analysis.\nStay current with emerging threats, technologies and engineering practices.\nSkills & Experience\nEssential\n5+ years in Security Engineering, Platform Engineering or DevSecOps roles.\nExperience implementing enterprise security technologies.\nExperience designing secure cloud environments.\nExperience integrating security capabilities into engineering workflows.\nStrong understanding of automation and platform engineering principles.\nExperience working within complex, global technology environments.\nDesirable\nExperience supporting security transformation programmes.\nExperience with Microsoft Defender, Sentinel, GitHub Advanced Security, Wiz or equivalent platforms.\nExperience implementing DLP and data classification solutions.\nExperience supporting AI security initiatives.\nExperience working within ISO27001, SOC2 or regulated environments.\nCore Technical Skills\nSecurity Engineering\nSecurity architecture and design\nSecurity control implementation\nVulnerability management\nThreat modelling\nSecurity monitoring and detection engineering\nSecurity platform integration\nCloud Security\nAzure security services\nAWS security services\nCSPM platforms\nCloud identity and access management\nContainer and Kubernetes security\nInfrastructure as Code\nDevSecOps\nGitHub Actions\nCI/CD pipelines\nSAST, DAST and SCA tooling\nSecret scanning\nDependency management\nSecure SDLC practices\nAutomation & Engineering\nPython, PowerShell or similar scripting languages\nREST APIs\nSecurity orchestration and automation\nInfrastructure as Code (Terraform, CloudFormation or equivalent)\nPolicy as Code\nPlatform integrations\nIdentity & Endpoint Security\nMicrosoft Entra ID\nConditional Access\nPrivileged Access Management\nEndpoint protection platforms\nZero Trust principles\nWhy This Role Matters\nAs RWS continues to modernise its technology landscape, security must evolve from a collection of local processes and point solutions into a consistent, scalable and automated capability embedded across the organisation.\nThe Senior Security Engineer plays a critical role in this transformation by designing, building and operating the technical foundations that enable security at scale. This includes centralising security tooling, implementing automated controls, creating reusable engineering patterns and embedding security directly into cloud platforms, engineering workflows and business services.\nThe role is instrumental in helping the organisation move from manual, people-driven security processes towards automated, policy-driven controls that improve visibility, reduce risk and enable teams to deliver securely at speed.\nLife at RWS\nLife at RWS- If you like the idea of working with smart people who are passionate about growing the value of ideas, data and content by making sure organizations are understood, then you’ll love life at RWS.\nOur purpose is to unlock global understanding. This means our work fundamentally recognizes the value of every language and culture. So, we celebrate difference, we are inclusive and believe that diversity makes us strong. We want every employee to grow as an individual and excel in their career.\nIn return, we expect all our people to live by the values that unite us: to partner, putting clients fist and winning together, to pioneer, innovating fearlessly and leading with vision and courage, to progress, aiming high and growing through actions and to deliver, owning the outcome and building trust with our colleagues and clients.\nRWS embraces DEI and promotes equal opportunity, we are an Equal Opportunity Employer and prohibit discrimination and harassment of any kind. RWS is committed to the principle of equal employment opportunity for all employees and to providing employees with a work environment free of discrimination and harassment. All employment decisions at RWS are based on business needs, job requirements and individual qualifications, without regard to race, religion, nationality, ethnicity, sex, age, disability, or sexual orientation. RWS will not tolerate discrimination based on any of these characteristics.\nRWS Values\nGet the 3Ps right - Partner, Pioneer, Progress - and we´ll Deliver together as RWS.\nRecruitment Agencies: RWS Holdings PLC does not accept agency resumes. Please do not forward any unsolicited resumes to any RWS employees. Any unsolicited resume received will be treated as the property of RWS and Terms & Conditions associated with the use of such resume will be considered null and void.\n#LI-IV1 #LI-Hybrid","description_format":"text","description_chars":8802,"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":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Government","RegTech, AML & Compliance","Legal Software"],"lifecycle":[{"event":"open","at":"2026-11-09T16:16:14Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":7,"reasons":["conf:3","win:early"],"computed_at":"2026-11-09T19:23:18Z"},"pay":null,"html_url":"https://alion.io/job/propylon-principal-security-engineer","json_url":"https://alion.io/job/propylon-principal-security-engineer.json","meta":{"generated_at":"2026-11-09T19:23:18Z","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":5148,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"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":1902709},"rest":"https://alion.io/mcp/rest/get_company?id=1902709"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpropylon-principal-security-engineer"},{"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%2Fpropylon-principal-security-engineer"},{"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%2Fpropylon-principal-security-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/propylon-principal-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpropylon-principal-security-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3971391}},{"tool":"search_jobs","arguments":{"company":"propylon.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3971391},"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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