Security Platform Engineer

📋 Job Overview

Lumin Digital's Security Engineering team is a true engineering organization that protects a cloud-hosted digital banking platform serving financial institutions and their members. As a Security Platform Engineer, you will apply reliability engineering to our security-critical infrastructure: building systems that scale gracefully, recover automatically, and converge on correct operation across hundreds of environments. Your scope spans telemetry clusters, GitOps-driven deployment workflows, and the patterns that make security a paved path for the rest of engineering. You will work in AI-assisted engineering tools every day: agentic coding assistants like Claude Code, MCP-based integrations, and custom agent harnesses. This role exists for Platform and Reliability Engineers who treat AI as part of their working medium and have something to teach the rest of us about reliability in an AI-native world. Success means our security fabric scales without us, and our on-call rotations get quieter every quarter.

🏢 About Lumin Digital

Lumin Digital is a company that provides a cloud-hosted digital banking platform for financial institutions and their members.

🎯 The Role

As a Security Platform Engineer at Lumin Digital, you will apply reliability engineering to our security-critical infrastructure, building systems that scale gracefully, recover automatically, and converge on correct operation across hundreds of environments. You will work with AI-assisted engineering tools daily and contribute to the reliability of our security fabric.

✅ Key Responsibilities

• Build and operate Lumin's security fabric: the foundation other security capabilities depend on, engineered for reliability and scale across hundreds of environments.
• Build and maintain agentic AI workflows using tools like Claude Code, MCP-based integrations, and custom agent harnesses to automate security platform engineering tasks.
• Build and operate security telemetry, log analytics, and observability infrastructure.
• Design and implement deployment workflows using GitOps patterns to manage security infrastructure across hundreds of AWS accounts and regions.
• Write and maintain production-quality Python applications and tooling that support platform operations.
• Secure and operate Kubernetes workloads in EKS, configuring RBAC, network policies, and deployment safeguards.
• Design and maintain secure cross-account and multi-region infrastructure patterns.
• Participate in an on-call rotation for security infrastructure services.
• Provide engineering support during security incidents.
• Support internal security audits and compliance frameworks.
• Collaborate with other Security Engineers, Risk teams, and core Site Reliability Engineering.
• Evaluate emerging AI-assisted engineering patterns and tooling.
• Perform other duties as assigned.

📌 Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Cybersecurity, or a related field, or equivalent combination of demonstrated engineering experience, shipped projects, and certifications.
• 5+ years of hands-on experience in platform engineering, infrastructure engineering, reliability engineering, DevSecOps, or a closely related technical discipline.
• At least 1 year of production experience with at least 2 agentic coding tools.
• Demonstrated experience building and shipping production code in Python or a similarly capable language, with infrastructure-as-code tools such as Terraform.
• Proven track record of operating cloud-native infrastructure in production, with deep familiarity in AWS, Kubernetes, multi-account / multi-region patterns, and CI/CD pipeline integration.

⭐ Desirable Experience

• Industry certifications that demonstrate hands-on technical depth.
• Experience with security telemetry platforms, GitOps deployment patterns, or reliability engineering practices in a security or compliance-sensitive context.

🎁 Benefits

Base Compensation: $160K – $180K • Offers Bonus

🛂 Visa & Eligibility

None.