Senior Security Engineer, Platform Security

About the team:

As a Senior Security Engineer, Platform Security at the forefront of blockchain security, you will work across cloud infrastructure, security operations, and AI platform reliability. This is a hands-on role for someone who is comfortable troubleshooting production systems, navigating AWS and Kubernetes environments, and partnering closely with engineering teams to drive issues to resolution. You'll help strengthen the security posture of a mission-critical platform while also supporting the company's Hosted AI Platform through monitoring, investigation, and operational response.

You will be a key partner to product, platform, and infrastructure engineering teams, driving remediation efforts and helping enforce practical security controls in live environments. Beyond daily operations, you will participate in a shared on-call rotation-once every four weeks, with onboarding and support from senior engineers-to respond to issues affecting the Hosted AI Platform and related security tooling. Join us to help secure and operate the infrastructure behind decentralized trust.

In this role, you'll:

• Perform Cloud Infrastructure Engineering in AWS and Kubernetes-based production environments, including inspecting pod health, reviewing logs, diagnosing restarts, and helping determine root cause or escalation paths.
• Use monitoring and logging tools such as Datadog, Grafana, Humio, ELK, or similar platforms to investigate incidents, search logs, and validate system behavior.
• Contribute Python scripts and small automation workflows for repetitive tasks, log parsing, remediation support, or operational efficiency.
• Participate in an on-call rotation supporting the company's Hosted AI Platform, providing structured triage, communication, documentation, and resolution or hand-off as needed.
• Read and make targeted, well-reviewed changes to Infrastructure-as-Code and platform configuration, including Terraform and Kubernetes manifests, to strengthen guardrails and reduce operational risk.
• Support security reviews for new services and major infrastructure changes, helping identify misconfigurations and recommending practical mitigations that fit how teams build and operate.
• Collaborate with partners across Security, IT, Platform Engineering, Legal, Risk, and Investigations, building strong working relationships and practicing clear, empathetic communication.

We're looking for candidates who have:

• Experience working in AWS cloud environments in a security, operations, or infrastructure engineering capacity.
• Hands-on experience troubleshooting production systems; this is not a purely policy, audit, or advisory role.
• Experience using Python for scripting, automation, log parsing, or remediation workflows.
• Familiarity with AWS logging and telemetry pipelines, including CloudWatch, CloudTrail, and S3 log aggregation.
• Hands-on Kubernetes & Terraform experience, including inspecting pods, reading logs, troubleshooting restarts, and navigating deployments in production.
• Willingness to participate in an on-call rotation once every four weeks supporting the company's Hosted AI Platform.
• Strong communication skills, with the ability to explain what you're seeing and what you recommend as a next step to both technical and non-technical audiences.
• A learning mindset and growth orientation: you're comfortable asking questions, seeking feedback, and taking ownership.

Nice to have experience:

• Exposure to AI infrastructure, AI platform operations, or LLM-based systems.
• Exposure to crypto, blockchain, or other high-availability cloud infrastructures.

Technologies we use:

• Cloud and containers: AWS, GCP, Kubernetes (EKS/GKE)
• Infrastructure-as-Code: Terraform
• Monitoring and logging: Datadog, Humio, Grafana, CloudWatch, CloudTrail
• Security tooling: Wiz, Cloudflare
• CI/CD and source control: GitHub, GitHub Actions, Jenkins, and related build/deploy tooling
• Languages and scripting: Python, Go, Java, Javascript

About Chainalysis

Blockchain technology is powering a growing wave of innovation. Businesses and governments around the world are using blockchains to make banking more efficient, connect with their customers, and investigate criminal cases. As adoption of blockchain technology grows, more and more organizations seek access to all this ecosystem has to offer. That's where Chainalysis comes in. We provide complete knowledge of what's happening on blockchains through our data, services, and solutions. With Chainalysis, organizations can navigate blockchains safely and with confidence.

You belong here.

At Chainalysis, we believe that diversity of experience and thought makes us stronger. With both customers and employees around the world, we are committed to ensuring our team reflects the unique communities around us. We're ensuring we keep learning by committing to continually revisit and reevaluate our diversity culture.

We encourage applicants across any race, ethnicity, gender/gender expression, age, spirituality, ability, experience and more. If you need any accommodations to make our interview process more accessible to you due to a disability, don't hesitate to let us know. You can learn more here. We can't wait to meet you.