P
Staff Platform Security Engineer (Security)
Contract type
Ongoing
Work mode
Remote · Canada
Experience
Senior · 7+ years
Job description
A Senior Platform Security Engineer role at Phantom to own and improve security across AWS and Kubernetes environments, working with infrastructure and engineering teams to secure control planes, identities, workloads, and deployment systems. It is a hands-on role in an AI-native security team focused on practical controls and verified remediation.
At a glance
- Employment
- Full-time · Employee (employment agreement)
- Work mode
- Remote · Canada
- Pay
- USD 200,000 – 250,000 / year
What you'll do
- Own and improve security across Phantom's multi-account AWS environment, including IAM, Identity Center, networking, compute, storage, secrets, logging, and organization-level guardrails
- Secure production Kubernetes environments running on Amazon EKS, including cluster configuration, workload identity, RBAC, admission controls, network boundaries, secrets, container security, and tenant isolation
- Design least-privilege access models for engineers, services, and automation; build scoped, auditable, and time-bound access paths for sensitive production systems
- Protect the infrastructure supporting products and services that handle sensitive data and high-value operations
- Lead security design for new infrastructure, platform services, and major architectural changes
- Build reusable security controls using tools such as Pulumi, Terraform, Kubernetes policy engines, and automated configuration validation
- Build tools that identify and remediate cloud and Kubernetes risks at scale; apply AI-assisted workflows where they materially improve analysis, coverage, or response speed
- Partner closely with Infrastructure, SRE, Developer Experience, and product engineering teams; establish practical platform-security standards and help teams adopt them
What we're looking for
- 7+ years of experience in platform security, cloud security, infrastructure security, security engineering, or a closely related engineering role
- Deep, hands-on experience securing production AWS environments, including IAM and resource policies, workload identity, network security, secrets management, logging, organization-level controls, and how these systems fail in practice
- Deep experience securing Kubernetes in production, preferably Amazon EKS, including RBAC, workload identity, admission policy, network policy, pod security, secrets, and cluster hardening
- Experience designing or securing mission-critical systems where compromise, excessive privilege, or loss of availability could have significant customer or business impact
- Strong understanding of identity, authorization, least privilege, isolation, and blast-radius reduction across both human and machine access
- Experience securing CI/CD and software supply chains, including GitHub Actions or similar systems, build runners, workload federation, artifacts, and production deployment paths
- Experience writing and reviewing infrastructure as code using Pulumi, Terraform, CloudFormation, or similar tools
- Ability to write production-quality code or automation in a language such as TypeScript, Python, Go, or Rust
- High agency and ownership; able to take an ambiguous platform-security problem from initial investigation through implementation and verified remediation
- Clear communication and a strong track record of partnering with infrastructure and engineering teams while maintaining a high security bar
Nice to have
- Experience with AWS Nitro Enclaves or other trusted execution environments, including attestation, isolation boundaries, secure key handling, and operational lifecycle management
- Experience securing financial, payments, wallet, custody, or other high-value transaction systems
- Familiarity with key-management infrastructure, AWS KMS, CloudHSM, cryptographic signing systems, or secrets-management platforms
- Experience operating or securing multi-region Kubernetes and AWS environments at significant scale
- Familiarity with service meshes and cloud-native networking technologies such as Istio, PrivateLink, Transit Gateway, or eBPF-based controls
- Experience with GitHub OIDC, Argo CD, Helm, Crossplane, or Kubernetes-based infrastructure delivery
- Experience using cloud-security and observability platforms such as Wiz, Datadog, GuardDuty, Security Hub, or CloudTrail
- Experience building policy-as-code, automated remediation, or security tooling used by a large engineering organization
- Familiarity with blockchain infrastructure or self-custodial wallet architecture
Your team
Platform Security
An AI-native security team that aggressively uses AI to expand the speed, depth, and reach of its work.
Benefits
- Competitive salary and equity
- Eligibility to participate in the company's performance bonus program
- Comprehensive medical, dental, and vision insurance with 100% coverage
- Stipend for your ideal remote setup
- Flexible hours and a supportive remote environment
- Unlimited vacation—take time when you need it
- 401(k) retirement plan
- Monthly wellness benefit
- Weekly meal benefit
- Global off-sites
Apply
About Phantom
Connect the world to the freedom of open markets
Phantom lets tens of millions of people access global markets that never close, including perpetuals, prediction markets, tokenized assets, stablecoins and memes. With self-custody and access to open networks at its core, Phantom lets users control their financial moves in the same app they use to safely store or spend money worldwide.
Mission
To connect the world to the freedom of open markets.
Key facts
- around 180 people
- Reached #1 in Google Play's finance category
- Consistently ranks in the top 50 apps across all categories
- Fully remote
- Backed by a $150M Series C investment from a16z, Sequoia Capital and Paradigm
Partners & customers
HyperliquidStripeKalshiVisa