[Hiring] Cyber Security Engineer @Lumin Digital

Role Description

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 Cybersecurity Engineer, you will build software and infrastructure that heals itself, automatically enforces controls at scale, and converges on correct operation across hundreds of environments. Your scope includes the lifecycle of our cryptographic material and the architecture of our security telemetry. 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 engineers fluent in AI tools who have something to teach the rest of us about working with them. Success means our security infrastructure doesn't go bump in the night.

• Engineer the security infrastructure the rest of the company depends on across AWS and Kubernetes: telemetry pipelines, cryptographic material lifecycle, compliance automation, and the architecture patterns that 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 engineering tasks.
• Engineer the lifecycle of cryptographic material as code, including key generation, secure storage, certificate issuance, rotation, and revocation.
• Build security telemetry pipelines that detect, enrich, and route signals with the fidelity our auto-remediation systems require.
• Embed security controls into deployment pipelines to prevent or resolve vulnerabilities at build time.
• Build compliance evidence collection and continuous control monitoring as engineered systems.
• Develop and maintain threat models that inform security architecture decisions.
• Consult, review, and approve architectural decisions by other infrastructure and product teams for security compliance.
• Provide engineering support to Security Operations during incident response.
• Partner with other Risk functions, technical teams, auditors, vendors, and clients to translate security requirements into engineered systems.
• Evaluate emerging AI-assisted engineering patterns and tooling through proof-of-concept work.
• Operate our COTS security tooling when needed.
• Perform other duties as assigned.

Qualifications

• Bachelor's degree in Computer Science, Cybersecurity, Software Engineering, or a related field, or equivalent combination of demonstrated engineering experience, shipped projects, and certifications in security engineering, cryptography, or cloud-native automation.
• Industry certifications that demonstrate hands-on technical depth are valued but not required.
• 5+ years of hands-on experience in security engineering with a strong emphasis on building engineered systems.
• 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.
• Proven track record of working in cloud-native environments.
• Experience with security telemetry platforms, PKI / certificate lifecycle management, or compliance automation preferred.

Requirements

• Fluency with AI-assisted development tools like Claude Code and similar agentic coding assistants.
• Hands-on experience shipping at the agentic tool layer.
• Strong software engineering fundamentals.
• Hands-on proficiency with cloud-native engineering.
• Technical knowledge of cybersecurity concepts, threat modeling, and secure design principles.
• Working knowledge of PKI concepts and certificate lifecycle management.
• Experience with security telemetry pipelines and log analytics platforms.
• Working knowledge of cloud security and compliance frameworks.
• Self-directed engineering mindset with a bias toward action.
• Excellent written and verbal communication skills.
• Nice to have: Contributions at the edge of what's possible with security and AI.

Benefits

• Medical, dental, and vision insurance.
• 401(k) with company match.
• Flexible PTO plus 12 paid holidays.
• Paid sick leave, parental, and family leave.
• Lifestyle spending account, tuition reimbursement, and cell phone stipend.