Senior Security Engineer
SEON
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Benefits offered by this job
Job summary
SEON seeks a Senior Security Engineer to secure our real-time fraud-prevention platform. You will build evidence pipelines, automate IAM reviews, and drive security certifications across ISO 27001, SOC 2 and PCI DSS.
You’ll work with AWS, Kubernetes, Terraform, and GitHub Actions to automate controls and ensure regulatory compliance. You will lead security questionnaires, threat modeling, and incident response efforts while collaborating with product and platform teams.
Qualifications
- 5+ years in security engineering with hands-on AWS experience: IAM, CloudTrail, GuardDuty, Security Hub, WAF.
- Working fluency in Terraform, Kubernetes and GitHub Actions.
- Python or a similar language for automating evidence collection, access reviews and alert enrichment.
Responsibilities
- Build evidence pipelines against AWS, GitHub, CI/CD and identity tooling so controls are verified by code rather than by hand.
- Automate access reviews across AWS IAM, Google Workspace, GitHub and core SaaS tools, and build self-service paths for routine access requests with the Platform and IT teams.
- Harden and remediate IAM at scale: unused roles, excessive permissions, long-lived credentials, root and break-glass access.
- Ship Terraform and CI guardrails: secret scanning on code and state, policy checks on plan, signed container images, enforced baselines on new accounts and clusters.
- Take part in the team's on-call and triage rotation: investigate alerts from GuardDuty, Security Hub, WAF and Kubernetes, handle vulnerability and bug bounty reports.
- Write and tune detections across CloudTrail, GuardDuty, WAF and Kubernetes signals, and contribute to cross-signal correlation and AI-assisted triage.
- Lead ISO 27001, SOC 2 and PCI DSS programmes: a single control framework mapped across standards, scoping, gap analysis, auditor liaison, remediation tracking and surveillance cycles.
Skills
Tools
Job description
When you join SEON, you’ll work with a growing team to make a big impact. We’re always looking for passionate, curious and empathetic people to join our team. Come work alongside a group of talented individuals who are driven to deliver great customer outcomes.
Join Our Team
At SEON, we strive to help online businesses reduce the cost, time and challenges faced due to fraud. Whether you are a global financial leader or a small eCommerce startup, our solution simplifies fraud management so you can focus on what matters: growing and scaling your company.
The people of SEON encourage open communication, do not believe in hierarchy and are all for transparency. By joining our Fraud Fighting team, you will be encouraged to offer creative and or innovative ideas that can drive the company forward. This is THE place for you if you want to be part of a customer obsessed, resilient and humble company that puts innovation at the center of what we do.
Our team is committed to fighting fraud on a daily basis, and as a result, we take great pride in offering our people fair compensation. Here are some further insights into our way of life:
Employee stock ownership plan.
Flexible work schedule that allows teammates to alter their workday.
Private health insurance including coverage for spouse and dependents.
We encourage our colleagues to work from home a few days per week, and spend the rest of the time in the office collaborating with the SEON team.
Access to an employee assistance and mental health support platform.
Monthly company breakfast and weekly lunch allowance.
Access to a variety of opportunities for learning and development (including external L&D).
You can order business books to grow your knowledge and support your curiosity to learn more.
We’re driven by Trust & Transparency, Customer Obsession, Innovation, and Ownership. We keep our word, act with integrity, and learn from every experience. Customers guide us, and we deliver with empathy, urgency, and unity. We embrace bold ideas, never settle, and iterate for impact. Together, we take ownership and drive meaningful solutions.
“What keeps me coming to work is the knowledge that the work we do at SEON is making a real difference in the world. Every day, we’re tackling complex challenges in fraud prevention, protecting businesses and their customers from financial threats. The sense of purpose and the dynamic, innovative team I get to work with inspire me to continue pushing the boundaries of what we can achieve together.”
“What keeps me coming to work is the knowledge that the work we do at SEON is making a real difference in the world. Every day, we’re tackling complex challenges in fraud prevention, protecting businesses and their customers from financial threats. The sense of purpose and the dynamic, innovative team I get to work with inspire me to continue pushing the boundaries of what we can achieve together.”
Emily Light, Head of Implementation
At SEON, we empower our team to grow and succeed on impactful projects. If you’re ready to elevate your career with a supportive, collaborative team, explore our open roles and find where your future can thrive with us!
Europe - Remote
Remote
SEON is the command center for fraud prevention and AML compliance, helping thousands of companies worldwide stop fraud, reduce risk and protect revenue. Powered by 900+ real-time, first-party data signals, SEON enriches customer profiles, flags suspicious behavior and streamlines compliance workflows - all from one place. SEON provides richer data, more flexible and transparent analysis, and faster time to value than any other provider on the market. We’ve helped companies reduce fraud by 95% and achieve 32x ROI, and we’re growing fast, thanks to our partnerships with some of the world’s most ambitious digital brands like Revolut, Wise, and Bilt.
We are looking for a Senior Security Engineer to help secure our real-time fraud-prevention platform. It runs on multi-region AWS, Kubernetes, Terraform and GitHub, and serves highly regulated clients worldwide. You will be a hands-on generalist with real depth in cloud and infrastructure security. You'll work with our application security and platform security engineers on identity and access, detection and response, infrastructure guardrails and security reviews.
You will also lead our security assurance programme: ISO 27001, ISO 42001, SOC 2, PCI DSS, and the customer due diligence that regulated clients expect. We want it to run the way an engineer would run it. Pipelines collect the evidence, reviews are automated, and we answer questionnaires from maintained material with AI-assisted drafting. At SEON, we believe great engineers come from many backgrounds. If you are a security engineer who has run a certification programme and knows how much of it can be automated, we encourage you to apply, even if you don't meet every single requirement listed below.
WHAT YOU’LL DO:
Build evidence pipelines against AWS, GitHub, CI/CD and identity tooling so controls are verified by code rather than by hand, and choose and run compliance automation tools.
Automate access reviews across AWS IAM, Google Workspace, GitHub and core SaaS tools, and build self-service paths for routine access requests together with the Platform and IT teams.
Harden and remediate IAM at scale: unused roles, excessive permissions, long-lived credentials, root and break-glass access. Move us towards short-lived, scoped identities with a named owner, for humans, workloads and AI agents.
Ship Terraform and CI guardrails: secret scanning on code and state, policy checks on plan, signed container images, enforced baselines on new accounts and clusters.
Take part in the team's on-call and triage rotation: investigate alerts from GuardDuty, Security Hub, WAF and Kubernetes, handle vulnerability and bug bounty reports, and contain and close incidents.
Write and tune detections across CloudTrail, GuardDuty, WAF and Kubernetes signals, and contribute to cross-signal correlation and AI-assisted triage.
Validate pentest and vulnerability remediations, review infrastructure and IAM changes, and contribute to threat models of new services and AI features.
Lead our ISO 27001, ISO 42001, SOC 2 and PCI DSS programmes: a single control framework mapped across standards, scoping, gap analysis, auditor liaison, remediation tracking and surveillance cycles.
Own customer security questionnaires and vendor security reviews, maintain our trust material, and develop our AI-assisted questionnaire tooling.
Keep policies and the risk register current and readable, and translate upcoming obligations (DORA, EU AI Act, regional financial regulators) into concrete engineering work.
WHAT YOU’LL BRING:
5+ years in security engineering with hands-on AWS experience: IAM, CloudTrail, GuardDuty, Security Hub, WAF, and the ability to investigate an incident from the logs up.
Working fluency in Terraform, Kubernetes and GitHub Actions. You can read a module or a workflow and tell whether it does what the policy says.
Python or a similar language for automating evidence collection, access reviews and alert enrichment, and comfort working with APIs and CI pipelines.
Experience leading ISO 27001 or SOC 2 as the primary contact for the auditor.
Experience with customer security questionnaires and vendor security reviews.
Clear, concise written English for auditors, engineers and customers.
You make decisions, prioritise against a roadmap, and ask for help early.
AMAZING IF YOU ALSO HAVE:
ISO 42001 or AI governance experience; PCI DSS as a service provider; DORA or financial-sector regulatory exposure; detection engineering or incident response background; Kyverno, Linkerd or EKS security tooling.
SEON Technologies collects and processes personal data in accordance with applicable data protection laws. If you are a European Job Applicant see the privacy notice for further details.
SEON is an equal opportunity employer. We strive to embrace what makes each one of us unique; we each have our own story. Whether looking at our current staff or future team members, we believe that everyone has something to contribute, and our employment practices reflect that. We do not make an employment decision based upon race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Please let your recruiter know if you need reasonable adjustments to our recruitment process.
Bond Collective, 310 Comal Street 2nd floor, Austin, TX 78702, United States
10 York Rd, London, SE1 7ND, United Kingdom
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