{"id":2456854,"url":"https://alion.io/job/hyperexponential-senior-security-engineer","title":"Senior Security Engineer","company":{"id":6497,"name":"hyperexponential","domain":"hyperexponential.com","url":"https://alion.io/company/hyperexponential","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","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":98000,"max_usd":180000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":29},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AWS","optional":false},{"name":"Copilot","optional":false},{"name":"GDPR","optional":false},{"name":"ISO 27001","optional":false},{"name":"SOC 2","optional":false}],"status":"live","first_seen_at":"2026-10-13T15:00:01Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-14T00:13:48Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Hi I’m Nitesh, Engineering Manager at hyperexponential. I'm one for the career mentors in the Product Foundations stream. We tackle the fundamental problems every product team at hx runs into, so the vertical streams can focus on building features for customers. Right now that means deployments, observability, security, AI observability tooling and a permission service that other value streams will build on.\nI’m hiring a Senior Security Engineer to join us as our second security hire. The foundations are already in place. We’ve chosen and implemented our tooling, and our repositories and cloud environments are onboarded. The next step is shaping how security actually works here. This won’t be a traditional, hierarchical security function. Our engineers go straight to the person who owns an issue and ask them to fix it, and you’ll help define what security looks like in that model.\nThere’s no established playbook for this yet, which is what makes it exciting. If that sounds like your kind of challenge, I’d love to hear from you.\nAbout hyperexponential (hx)\nAt hyperexponential, we're building the AI-powered platform that enables the world's most critical decisions in a £7 trillion industry, which risks to take, and how to price them. These are the decisions that shape real-world outcomes: whether rockets successfully launch into space, autonomous vehicles make it to market, or communities recover after major storms.\nUntil now, insurance has been making billion-pound decisions using outdated tools. We're changing that. Our platform brings together data, AI, and human expertise to give insurers the fastest path from submission to decision - helping them move faster, act smarter, and take on more risk with confidence.\nBacked by a16z, Highland Europe, and Battery Ventures, we're scaling globally - already trusted by nearly 50 of the world's largest insurers, with zero churn and billions in premiums flowing through hx.\nWhat began as a single product in one market has rapidly evolved into a multi-product, multi-territory platform powering every stage of pricing and underwriting. AI is at the core of what we do - from building the world's first domain-specific AI peer programmer for insurance (think GitHub Copilot with a PhD in actuarial science) to shaping agentic workflows that reinvent how this industry operates.\nWhat makes hx different is the people who build it. Here, impact isn't tied to title or tenure; it's defined by the challenges you take on and the discipline you bring. Surrounded by peers who stretch you, you'll do the best, hardest work of your life in a company engineered to endure.\nIf that sounds like you, join us in building what comes next.\nAbout the Security function\nThe Security function's mission is to safeguard the integrity, confidentiality, and availability of our customers' data and hx's systems. By fostering a culture of vigilance, risk mitigation, and continuous improvement, we maintain the highest standards of security excellence.\nSecurity at hx underpins every product and every customer interaction. As we scale our multi-product platform globally and adopt AI across the business, the team ensures that innovation and growth are matched with rigorous security practices. We design controls, shape culture, and guide decisions that protect our business, our customers, and the wider industry.\nAs a Senior Security Engineer, you’ll be the second engineer in our security team, working directly alongside our Staff Security Engineer. The foundations are in place, with our core tooling chosen, rolled out and onboarded across our repositories and cloud environments. Much of how security works at hx is still to be built, though, so you’ll have real autonomy to shape it, with a direct line to the teams who own the issues you find. You’ll strengthen hx’s security posture by driving continuous improvement across our technical teams: owning security reviews, running and extending our security tooling, and turning findings into fixes, often by writing the code or making the infrastructure change yourself. You’ll champion security initiatives across the organisation, help teams adopt AI securely, and use AI to multiply your own impact. This role combines hands-on technical depth, ownership and influence to make security a practical part of how our teams work every day.\nCheck out our Engineering Candidate Hub for a behind the scenes look at the team you would be joining!\nWhat you'll be doing\nModify, maintain, and extend our security tooling across engineering and IT environments, including CSPM, SAST, SCA, and secret scanning, ensuring it's reliable, well tuned, and genuinely useful to the teams who depend on it.\n\nUse our tooling and your own judgement to proactively identify gaps across cloud security, dependencies, secrets, and code. Work with the owning teams (starting with 2 to 3 where the gaps are greatest) to secure their commitment to prioritise remediation, and see it through.\n\nWrite code and make infrastructure changes yourself to fix security issues and improve our tooling, rather than just recommending improvements.\n\nOwn security reviews end to end, partnering with engineering teams on new designs, significant changes, and new tools, and working through follow-up questions and challenges until each review is resolved.\n\nTake ownership of and complete a medium-sized security project within your first three months.\n\nPartner with our IT team on security best practice, helping implement practical improvements in authentication, authorisation, and security hygiene across our corporate environment.\n\nGuide teams across the business on adopting AI securely, from assessing new AI tools and use cases to mitigating risks like data leakage and prompt injection, while using AI yourself to increase your impact.\n\nSupport our compliance programmes, such as ISO 27001 and SOC 2, by helping teams implement and evidence technical controls.\n\nAct as a trusted voice for our technical teams, owning security issues raised with them through to resolution and handling the related correspondence.\n\nWhat you'll need to have done\nSecured AWS cloud environments hands-on: using Cloud Security tooling to find common weaknesses, and fixing them yourself through infrastructure and code changes. Cloud Security experience is required.\n\nSecured containerised workloads and infrastructure-as-code, catching issues before they reach production.\n\nExperience working with SAST, SCA, and secret scanning tools, including triaging findings, filtering out false positives, and partnering with engineering teams to get real fixes shipped\n\nSupported compliance efforts such as ISO 27001, SOC 2, or GDPR by implementing and evidencing technical controls.\n\nUsed AI to improve your own security work and helped others adopt it safely, with a practical understanding of AI-specific risks such as data leakage, prompt injection, and agents and integrations with excessive permissions.\n\nSpotted and addressed non-technical risks, such as weak processes, risky behaviours, and gaps between teams, that can undermine technical security.\n\nDiscussed security in depth with engineering teams, explaining complex concepts clearly and concisely and influencing teams through to implementation.\n\nTaken ownership of security projects and initiatives and driven them to completion independently.\n\nYou're unlikely to thrive here if\nYou prefer to advise from the sidelines rather than writing code and making the infrastructure changes yourself.\n\nYou see security as a gatekeeping function rather than a service to the teams you support, whose adoption and trust determine your success.\n\nYou'd rather wait for direction than take ownership of issues, follow them through to resolution, and manage the correspondence around them.\n\nIf reading our Culture Document leaves you feeling neutral rather than energised, hx may not be the place where you'll do your best work. We're building something that asks for commitment and conviction, and we want you to feel excited by the opportunity to grow with us.\nCompensation\nAt hx, we're committed to salary transparency. You'll always have clarity on pay early in the process - our Talent Partner will share details with you during initial conversations - and we're working towards publishing salary information for all roles globally.\nBecause we're building at the intersection of technology/SaaS and insurance, our roles don't always map neatly onto traditional benchmarks. Our approach is to design compensation that's competitive in the market, fair across teams, and aligned with the impact our people make.\nEquity: We offer equity across all roles at hx, making it a significant component of total compensation. Your Talent Partner will be able to share more details about this.\nBenefits\n£5,000 training and conference budget for individual and group development.\n\n25 days of holiday plus 8 bank holidays (33 days total).\n\nCompany pension scheme via Penfold.\n\nMental health support and therapy via Spectrum.life.\n\nIndividual wellbeing allowance via Juno.\n\nPrivate healthcare insurance through AXA.\n\nIncome protection and Life Insurance.\n\nCycle to Work Scheme.\n\nAdditional perks\nTop-spec equipment (laptop, screens, adjustable desks, etc.).\n\nRegular remote and in-person hackathons, lunch and learns, socials, and game nights.\n\nTeam breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry.\n\nExceptional opportunities for personal development and growth as we build something remarkable together.\n\nInterview process\nTalent Interview (30 minutes)\n\nHiring Manager Interview (60 minutes)\n\nSkills Assessment (120 minutes)\n\nValues Interview (60 minutes)\n\nMeet the CEO (30 minutes)\n\nOur commitment to Diversity\nhxers are at the centre of everything we build. We know that progress depends on diverse perspectives, and we are committed to creating an environment where everyone can thrive, grow, and make an impact. We recognise there is always more to do, and we take responsibility for shaping a workplace that is not only diverse but genuinely inclusive.\nDiversity is not just the right thing to do, it is key to solving the complex challenges we choose to take on. By welcoming people from all backgrounds and experiences, we strengthen our ability to question assumptions, push boundaries, and design solutions that endure.\nIf you're energised by complexity and motivated to grow, we encourage you to apply and join our global team.\nNext steps\nIf this opportunity resonates with you, we encourage you to apply or share it with your connections! Our dedicated talent team reviews all applications, and we promise to provide feedback regardless of the outcome.\nFor more information about applying and to view other opportunities, you can visit our careers page.\nPlease note that background checks will be conducted as part of the hiring process to ensure compliance with our governance policies. We handle all background checks sensitively and in full compliance with relevant regulations. 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