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Senior Infrastructure Security Engineer
United States
Full Remote
AI Summary
Prometheum is seeking a Senior Infrastructure Security Engineer to design and maintain secure cloud infrastructure, manage security operations, and ensure regulatory compliance. The ideal candidate has 7+ years of experience in information technology or cloud infrastructure and strong AWS expertise. This is a senior, hands-on role with a broad scope, requiring real ownership, direct access to leadership, and the ability to shape how security is built and operated at Prometheum.
Key Highlights
Design and maintain secure AWS cloud infrastructure
Manage security operations and regulatory compliance
Strong AWS expertise and experience in a lean, regulated environment
Key Responsibilities
Design and maintain secure AWS cloud infrastructure using Terraform and Terragrunt
Manage AWS network security: VPC segmentation and design, Transit Gateway architecture, PrivateLink for service isolation, Network Firewall, and Route 53 Resolver for DNS security
Manage and maintain Cloudflare infrastructure including DNS, WAF, and edge compute
Architect and operate Cloudflare Zero Trust — including Access policies, Tunnel configuration for private network routing, Gateway egress filtering and DNS security policies, and WARP client deployment
Manage and tune AWS-native security tooling: GuardDuty, Security Hub, Config, Inspector, CloudTrail, and WAF
Integrate security controls into CI/CD pipelines (GitHub Actions) — including SAST, DAST, container image scanning, dependency vulnerability checks, and secrets detection
Enhance container and workload security through image signing, admission controllers (Kyverno), runtime policies, and base image hygiene
Manage dependency and patch lifecycle across Docker images, Helm charts, Terraform modules, and application packages
Own and operate security monitoring and incident response: maintain SIEM/log aggregation pipelines, tune alerting for anomalous behavior and policy violations, lead root cause analysis, and document post-mortems
Conduct and coordinate vulnerability assessments; track findings through to remediation
Automate compliance checks and drift detection using infrastructure scanning and policy-as-code tooling
Participate in on-call rotation to respond to security and infrastructure incidents
Support SEC and FINRA compliance obligations by implementing and documenting technical controls, and partner with legal and compliance teams during audits and regulatory reviews
Document infrastructure patterns, access controls, and security architecture for audit readiness
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Technical Skills Required
Benefits & Perks
Competitive salary based on experience
Excellent benefits including: Health, Vision & Dental Insurance
Fully remote position with equipment provided
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Nice to Have
Kubernetes/EKS experience
Blockchain infrastructure or digital asset platforms
AI-assisted tooling in DevOps or security workflows
Experience working in a highly regulated financial services environment — broker-dealer, RIA, ATS, or custodian — with direct exposure to SEC or FINRA examinations
Job Description
About Us:-
Since its founding in 2017, Prometheum has leveraged its deep expertise in securities law,
blockchain, and trading to create a compliant ecosystem for digital asset securities that enables all
investors to seamlessly invest in digital asset securities. Prometheum has relied on its strong diverse
team to build the tools to service digital asset securities. To date, Prometheum has built multiple
broker-dealers traversing novel areas and a large technology stack (intersecting trading, blockchain,
compliance, etc.). We continue to grow and are looking for hardworking, hungry individuals that can
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