Senior Security Platform Engineer

🕒 July 12, 2025

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Lumin Digital

WebsiteLinkedInAll Job Openings

51 - 200 employees

💳 Fintech

🤝 B2B

☁️ SaaS

Fintech • B2B • SaaS

Lumin Digital is a company that specializes in providing next-generation digital banking solutions for credit unions and banks. Their platform offers a wide array of services, including retail and commercial banking solutions, digital account opening, and tools to enhance user engagement and operational efficiency. With a focus on innovation and cutting-edge technology, Lumin Digital leverages artificial intelligence and robust security features to offer seamless, cloud-native services with near-perfect uptime. They are known for delivering business growth and cost savings for financial institutions, adapting to new technologies, and offering an enhanced user experience.

📋 Description

• The Senior Security Platform Engineer leads the design and operation of core infrastructure that supports security detection, observability, and response at Lumin Digital. In this role, you will architect secure and scalable systems, mentor peers, and partner across engineering teams to promote secure-by-default development and operational patterns. This role blends deep technical expertise with strategic ownership of security systems, with a focus on reliability, automation, and influencing broader engineering practices through thought leadership and mentorship. • Architect multi-region and multi-account telemetry systems that support ingestion, storage, and analysis of security-relevant data at scale. • Define and enforce the separation of duties and access controls in CI/CD and infrastructure provisioning workflows. • Lead the design and rollout of policy-as-code frameworks and pipeline guardrails to improve deployment security across teams. • Set service-level objectives (SLOs) for security services and lead capacity planning, monitoring strategy, and performance optimization. • Guide incident response for complex or high-severity issues, including technical leadership during resolution and facilitating post-incident reviews. • Mentor engineers across the organization in secure platform practices and review contributions for architectural integrity and security posture. • Drive initiatives that embed security into developer workflows (e.g., secure ephemeral environments, secrets management, test isolation). • Collaborate with platform and product leadership to influence roadmaps and align engineering efforts with long-term security objectives.

🎯 Requirements

• Bachelor’s degree in Computer Science, Information Security, or related field; or equivalent self-directed study with demonstrated competency in security operations, cloud engineering, or platform reliability required. • Six (6) or more years of professional experience in security engineering, platform reliability, or cloud infrastructure. • Experience designing and leading large-scale secure systems in cloud-native environments (AWS preferred). • Proven track record of mentoring engineers, leading initiatives, and driving improvements to reliability and security posture across organizations. • Advanced knowledge of cloud security best practices, including the requirements and guidance from security and compliance frameworks, such as SOC 2 Trust Services Criteria, PCI Data Security Standard, the CIS Benchmarks, and the AWS Well-Architected Framework. • Advanced knowledge of security best practices for Kubernetes, CI/CD, AWS, and cloud-native systems. • Expertise with infrastructure-as-code tools (e.g., Terraform) and pipeline automation for secure deployments. • Excellent troubleshooting, incident management, and monitoring skills across distributed systems. • Strong communication and collaboration abilities, with a focus on mentorship and cross-team influence. • Ability to influence engineering practices and advocate for security priorities in roadmap discussions. • Must be able to pass requisite background checks to access sensitive information.