Oliver mcTammany

Senior Full Stack Software Engineer, Security

SpaceX

Nov 2024 - Current (1 year 9 months)

• Served as technical lead for foundational security services on Starlink.com, designing and owning critical systems for user authentication (MFA), role-based access control (RBAC), and data compliance for millions of users. • Architected enhancements to the workload identity framework, transitioning microservices from shared secrets to unique cryptographic keys and implementing a refresh token flow to strengthen service-to-service authentication. • Engineered and operated highly scalable and resilient web applications using .NET microservices on Kubernetes (GCP), building secure-by-default systems with a focus on reliability and testability. • Led a coordinated response to post-penetration test findings, driving a "stop and fix" sprint

Software Engineer Principal

SAIC

Mar 2023 - Nov 2024 (1 year 9 months)

• Led architecture design and implementation of dataset-level Role-Based Access Control (RBAC) at Crucible, enhancing data security and enabling seamless customer utilization while driving operational efficiency and satisfaction. • Designed and implemented scalable Java APIs (Spring Boot) and background workers for serving billions of records across millions of requests per 8 hour window. • Engineering and design lead for developing dashboards to provide rich visual summaries of the current status of the system and any ongoing wargames. • Led the conception and execution of real time data analytics using Python, NiFi, Kafka, and Grafana to shorten time to generate after action reports from days to minutes. • Interfaced with engineers,

Full Stack Software Engineer

SAIC

Aug 2021 - Mar 2023 (1 year 8 months)

• Owner of the entire Crucible tech stack in Hawaii, supporting large-scale wargames and presentations to Distinguished Visitors, including members of Congress and four-star generals. • Created user interfaces with React based on collaborating with customers, partners, and key players to improve troubleshooting efficiency and user satisfaction. • Improved uptime for mission critical data flows from 55% to 95% by implementing changes to Zookeeper, NiFi, and Puppet • Created, scoped, deployed, and maintained networked microservices to interface with both the existing Crucible stack and third-party Battle Management Applications in response to changing customers needs, both on-prem and with Azure

Software Engineer

Caci

Jun 2018 - Aug 2021 (3 years 3 months)

• Led the engineering overhaul of a mission-critical display system in Vue, architecting the backend services in Java and utilizing Redis for a high-performance, low-latency data cache. • Co-lead for redesign of Launch Display System for web, tasked with modernizing UI and streamlining backend processes. Reduced code footprint by 20% in process • Participated on console during launch operations and interfaced with a wide variety of subject matter experts to translate technical engineering discussions on rocketry for consumption by broader launch base through our UIs

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