{"id":1093181,"url":"https://alion.io/job/pa-consulting-operational-technology-ot-cyber-security-architect","title":"Operational Technology (OT) Cyber Security Architect","company":{"id":6225,"name":"PA Consulting","domain":"paconsulting.com","url":"https://alion.io/company/pa-consulting","size_band":"501-1000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":83,"open_postings":40,"ghost_share":0,"stale_share":0.7,"repost_share":0,"time_to_fill_p50_days":36,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Security","role_family":"Security","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":104000,"max_usd":175000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":11},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ISO 27001","optional":false},{"name":"Microsoft Defender","optional":false},{"name":"NIST CSF","optional":false}],"status":"live","first_seen_at":"2026-09-21T09:25:51Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-10-20T06:00:57Z","board_verified":true,"closed_at":null,"days_open":28,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":28},"description":"We believe in the power of ingenuity to build a positive human future.\nAs strategies, technologies, and innovation collide, we create opportunity from complexity.\nOur teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results.\nWe are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport.\nOur teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands.\nPA. Bringing Ingenuity to Life.\n We believe in the power of ingenuity to build a positive human future. We challenge where it matters and own the outcome. We combine strategic thinking, customer-centric service design, and agile engineering practices to accelerate innovation in a tech-driven world.\nWhy consider joining our Digital & Data community?\nJoin our Digital & Data team working alongside product, design and a wide range of other experts and cross-disciplinary teams to bring ideas to life through innovative software solutions. \nGrow a flexible and unique career within a trust-based, inclusive environment that values excellence, innovation, and curiosity. You have the option to progress with us on a technical career track. No need to go onto the Partner career track if this doesn’t align with what you want to do. \nHybrid working - our approach is to be in the office or on client site a minimum of 2 days per week. \nWork on a broad variety of projects and tech stacks for clients across seven sectors - no project is ever the same \nJoin other experts within our supportive and collaborative tech community through knowledge-sharing and peer-level support, coaching and mentoring \nDeepen your expertise through our culture of learning and growth - you’ll have budget to take courses (technical and non-technical training), plus gain certifications \nOur tech stack\nWhile we advocate for using the right technology for the right task, you can expect to work across complex IT and OT environments, helping clients strengthen cyber resilience, secure critical systems and design practical security architectures that can be deployed safely in operational settings.\nOT and industrial control systems, including ICS, SCADA and OT network environments.\nSecurity architecture approaches including segmentation, zoning, secure remote access, monitoring, logging and telemetry.\nRecognised frameworks and standards such as IEC 62443, NIST CSF, NCSC CAF, ISO 27001, NIS/NIS2 and related regulatory requirements.\nOT security tooling and monitoring platforms such as Nozomi, Claroty, Dragos, Microsoft Defender for IoT or similar technologies.\nArchitecture, modelling and delivery tools used to define target-state designs, roadmaps and implementation plans.\nWhat you can expect\nAs an OT Cyber Security Architect, you will lead the design and delivery of security architectures across complex operational environments. You will work with senior stakeholders, engineering teams and regulators to translate cyber risk into practical, deployable security outcomes. You will act as a technical authority and trusted advisor, shaping how clients secure their OT estates while balancing resilience, safety and operational efficiency.\nArchitect and design secure OT environments aligned to good practice, global standards and regulation, including IEC 62443 and NIS/NIS2.\nTranslate cyber risk assessments into target-state architectures, security control designs and pragmatic implementation roadmaps.\nDefine secure integration patterns between IT and OT environments, including segmentation, access control, monitoring and resilience capabilities.\nLead OT security transformation workstreams, including secure remote access, vulnerability management, protective monitoring and operational resilience.\nAdvise CISOs, CIOs, operational leaders and engineering teams on OT risk, resilience, regulatory obligations and investment priorities.\nSupport technology selection, deployment and optimisation while helping clients right-size security controls to minimise operational disruption.\nYou’ll work to agile best practice and collaborate cross-functionally with multiple teams and stakeholders. You’ll use your technical skills to solve complex client problems, contribute to internal propositions and support the development of reusable tools, playbooks and guidance for our wider cyber community.\nYou can expect live, in-person whiteboarding sessions to problem solve as a team, alongside asynchronous communication on Teams. Hybrid working means spending time with the team on client site or in one of our offices a minimum of two days per week; however, the actual time you spend and where you spend it will vary by role or assignment, including up to five days per week on a client site.\nYou’ll join an environment that deeply cares about its values and the positive impact our work has for clients, communities and society.\n Essential requirements\nEven if you don’t meet every requirement below, feel free to still apply as we are often hiring for similar roles which your background might be better suited to.\nStrong professional experience designing and delivering OT security architectures in critical infrastructure, industrial, manufacturing, transport, energy, utilities or similarly complex operational environments.\nDeep understanding of industrial control systems, SCADA, OT networks and the operational constraints that shape cyber security decisions in safety-critical environments.\nExperience applying recognised frameworks and standards such as IEC 62443, NIST CSF, NCSC CAF, ISO 27001, NIS/NIS2 or related regulatory requirements.\nProven ability to translate cyber risk into practical architecture decisions, control designs, implementation roadmaps and clear stakeholder recommendations.\nYou thrive in problem-solving and analytical thinking.\nYou enjoy collaborating with multiple stakeholders in a fast-paced environment, including senior security leaders, engineering teams, operational teams and third parties.\nStrong communication skills, with the ability to explain complex technical topics clearly to both technical and non-technical audiences.\nPlease be aware that some of our UK roles at PA Consulting require a UK security clearance.\nAll PA people are required to undergo background checks and to achieve the Baseline Personnel Security Standard however, some UK roles also require higher levels of National Security Vetting, where applicants must have at least 5 years of continuous residency in the UK.\nWe therefore ask that you only apply if you meet the residency requirements (i.e. you are a British citizen or have been resident in the UK for the past 5 years), as this is the prerequisite for a security clearance. If you're unsure about your eligibility, we encourage you to review the UK Government’s guidance on security vetting before applying.\n Assessment process\nPlease note that the interview stages may be subject to change based on the specific requirements of the role.\nQuick call with one of our Tech Recruiters - to discuss your application, the role and PA \nRound 1: Either a competency or technical interview (60 mins) \nRound 2: Either a competency or technical interview, whichever you didn’t do at first round (60 mins) \nFinal round : Meeting with a PA leader - a mini case study and discussion around your client-centricity (60 mins) \nLife At PA encompasses our peoples' experience at PA. It's about how we enrich peoples’ working lives by giving them access to unique people and growth opportunities and purpose led meaningful work.\nOur purpose guides how we work with our clients and our teams, and support our communities, to deliver insight and impact, solving the world’s most complex challenges. We're focused on building a workplace that values human difference and diverse mindsets, and a culture of inclusion and equality that unlocks the potential in our people so everyone can be their best self.\nFind out more about Life at PA here.\nWe are dedicated to supporting the physical, emotional, social and financial well-being of our people. Check out some of our extensive benefits:\nHealth and lifestyle perks accompanying private healthcare for you and your family \n25 days annual leave (plus a bonus half day on Christmas Eve) with the opportunity to buy 5 additional days \nGenerous company pension scheme \nOpportunity to get involved with community and charity-based initiatives \nAnnual performance-based bonus \nPA share ownership \nTax efficient benefits (cycle to work, give as you earn) \nWe’re committed to advancing equality. We recruit, retain, reward and develop our people based solely on their abilities and contributions and without reference to their age, background, disability, genetic information, parental or family status, religion or belief, race, ethnicity, nationality, sex, sexual orientation, gender identity (or expression), political belief, veteran status, any other range of human difference brought about by identity and experience. We welcome applications from underrepresented groups.\nAdjustments or accommodations - Should you need any adjustments or accommodations to the recruitment process, at either application or interview, please contact us on ","description_format":"text","description_chars":9549,"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":"English","level":"All levels","optional":false}]},"benefits":["Annual leave","Growth opportunities","Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Information Security","Management Consulting","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-09-21T15:55:14Z"}],"visa":[],"liveness":{"score":45,"band":"ok","label":"Likely open","p_open":1,"p_active":0.601,"p_room":0.75,"age_days":28,"expected_fill_days":36,"reasons":["conf:3","stale_co","velocity","win:late"],"computed_at":"2026-10-20T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/pa-consulting-operational-technology-ot-cyber-security-architect","json_url":"https://alion.io/job/pa-consulting-operational-technology-ot-cyber-security-architect.json","meta":{"generated_at":"2026-10-20T09:12:19Z","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":10066,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"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":6225},"rest":"https://alion.io/mcp/rest/get_company?id=6225"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpa-consulting-operational-technology-ot-cyber-security-architect"},{"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%2Fpa-consulting-operational-technology-ot-cyber-security-architect"},{"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%2Fpa-consulting-operational-technology-ot-cyber-security-architect"},{"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/pa-consulting-operational-technology-ot-cyber-security-architect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpa-consulting-operational-technology-ot-cyber-security-architect"}]}