0e19326bcb
Updated all resumes that list open source projects to consolidate testct and ctclient into a single bullet point since both are Certificate Transparency related tools with similar purposes (testing, validation, monitoring). Updated resumes: - paul-halvorsen-resume-detailed.md (main detailed resume) - stealth-startup/backend-developer/paul-halvorsen-resume.md - collette/software-engineer-ii/paul-halvorsen-resume.md - lemans/backend-software-engineer/paul-halvorsen-resume.md - tenstorrent/devrel-engineer/paul-halvorsen-resume.md Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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name, keywords, left-column, right-column, fontsize, fontenc, urlcolor, linkcolor, numbersections
| name | keywords | left-column | right-column | fontsize | fontenc | urlcolor | linkcolor | numbersections | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paul Halvorsen | python, backend developer, REST API, database management, security, MySQL, git, docker, testing, performance optimization |
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10pt | T1 | blue | magenta | false |
Professional Summary
Backend Engineer with 15+ years of experience developing scalable server-side applications, REST APIs, and database systems. Expert in Python, MySQL, and test-driven development with a proven track record of optimizing backend performance and implementing security best practices. Passionate about building reliable infrastructure and writing clean, testable code.
Core Technical Skills
Languages: Python (Advanced), Rust, C, GoLang | Databases: MySQL, SQLite, SQL/NoSQL | Backend: REST APIs, JSON, Nginx | DevOps: Docker, Git/GitLab CI/CD | Testing: Pytest, Unit Testing, Integration Testing | Security: Encryption (RSA, AES), Authentication, Data Protection | Frameworks & Tools: Tokio, TDD, pytest
Professional Experience
Software Engineer | Abnormal AI
\resumedate{January 2026 – Present}
- Develop and maintain Python-based data aggregation services for multi-region deployments (US East, US West, EU West)
- Design and optimize real-time storage and long-term data management systems handling customer data at scale
- Implement performance optimizations including auto-scaling and compression, improving efficiency by up to 70%
- Write comprehensive unit and integration tests using pytest; maintain high test coverage
- Collaborate with 5-person team on monorepo architecture and continuous integration pipelines
- Build and manage infrastructure using GoLang and Python for data pipeline orchestration
Sr Software Engineer | Binary Defense
\resumedate{April 2022 – October 2025}
- Architected and implemented Python backend libraries for cross-platform event monitoring (Windows, Linux, macOS)
- Designed REST APIs for secure communication between client endpoints and backend services
- Optimized backend services, achieving 60-80% improvements in memory and network traffic reduction through intelligent filtering and compression
- Implemented encrypted SQLite database layers with secure key storage (DPAPI, freedesktop.secrets)
- Built end-to-end integration testing framework spinning up pre-configured VMs and automated test servers
- Executed performance profiling and optimization on data processing pipelines handling millions of events
- Developed Python libraries for network traffic monitoring with event-driven architecture and regex-based filtering
- Maintained CI/CD pipelines (GitLab) for compilation, testing, and deployment across platforms
- Implemented security hardening: public key pinning, certificate transparency validation, secure key exchange protocols
Security Software Engineer | Parsons
\resumedate{April 2018 – November 2020}
- Designed and built back-end file storage service supporting concurrent multi-user access with role-based access control (RBAC)
- Implemented REST API for file management with web and CLI interfaces
- Managed MySQL database with advanced indexing and optimization strategies
- Developed data deduplication logic to eliminate redundant storage and support multi-user read access
- Built custom serialization protocol optimizing network traffic and data transfer
- Implemented LDAP integration for enterprise user authentication
Security Software Engineer | NSA
\resumedate{November 2011 – April 2018}
- Designed and maintained MySQL databases holding CVE data, exploit information, and system fingerprints
- Built REST JSON APIs for real-time data transfer between web interfaces and backend services
- Implemented query optimization and indexes reducing query latency by 50%+
- Developed backend web services using PHP, Python, and Java supporting thousands of concurrent users
- Created secure communication protocols and custom serialization for limited-bandwidth environments
- Deployed backend systems on Tomcat, Apache, and Nginx across Linux and Windows platforms
Systems Engineer | NSA
\resumedate{September 2009 – November 2011}
- Managed infrastructure supporting 130+ RHEL servers across 10+ systems
- Developed Python automation scripts for system monitoring, health checks, and remediation
- Built reporting systems integrating with Web APIs for real-time alerting and status tracking
Software Developer | Salisbury University
\resumedate{November 2006 – May 2008}
- Built C++ backend for risk assessment system supporting real-time data processing and reporting
- Designed database schema for scenario storage and analysis
- Collaborated with Geographic Information Systems team to integrate maps and spatial data
Education
Master of Science in Computer Science | University of Maryland Baltimore Campus (2013)
- Thesis: "Stateless Detection of Malicious Traffic: Emphasis on User Privacy"
Bachelor of Science in Computer Science | Salisbury University (2009)
- Graduated Magna Cum Laude
Security Clearance & Certifications
- CompTIA Security+ (Expired 04/04/2024)
- Expired TS/SCI Clearance
Open Source & Projects
- testct & ctclient (Rust) - Certificate transparency testing, validation, and monitoring tools
- baseball-nn (Python) - Machine learning project using TDD and pytest
- sjles-pta-vote (Go, TypeScript) - Full-stack community platform with REST APIs