Sjoerd De Bruyn

Bachelor of Science in Computer Science; GPA: 3.76

• Rotated through six SOC teams including penetration testing, network security, detection engineering, and threat analysis.
• Performed two local penetration tests on Linux systems and one on a client network and authored detailed technical reports with remediation guidance.
• Completed an on-site threat assessment for a client, mapped findings to NIST controls, and identified compliance and remediation priorities.
• Developed proficiency in SIEM operations, alert investigation, incident documentation, and foundational SOC workflows.

• Delivered a 3-hour live technical training session to customers and instructors, improving product fluency and adoption.
• Participated in User Acceptance Testing for new course content; documented bugs and recommended improvements.
• Analyzed Splunk's education platform performance and presented findings and remediation suggestions to leadership.
• Contributed to a social awareness analytics project using Splunk to analyze and visualize real-world datasets.
• Attended weekly technical lectures on Splunk and Cisco enterprise systems to deepen product knowledge.

• Coordinated with faculty and ULAs to support over 300 students across six distinct projects and coursework modules.
• Graded 30–60 programming assignments weekly, providing code-level feedback to accelerate student learning.
• Led 30+ office hours and tutoring calls per term, offering one-on-one assistance and debugging support.

• Ensured the safety of 200+ swimmers by supervising multiple aquatics areas and serving as primary emergency responder.
• Managed a team of 20 lifeguards: organized weekly staff meetings, ran bi-monthly trainings, delegated daily duties, and created cost-efficient schedules.
• Led a relaunch of the aquatics program through improved outreach and scheduling processes, increasing department revenue.
• Instructed 10–15 swim students weekly, contributing approximately $11,000 in program revenue.

• Provided administrative and operational support across office tasks and event preparation.

• Prepared baked goods, maintained quality control, and supported inventory and production workflows.

• Executed high-volume food production with quality and timing responsibilities in a fast-paced kitchen environment.

• Managed front-of-house tasks and supported back-of-house cleaning and sanitation.

• Performed customer service tasks and supported daily operations.

Online Encryption Service with Microservices — AES-256, Key Management

• Built a microservice-driven web application for secure file encryption and decryption with user registration, authentication, and encrypted storage for up to 50 files per user.
• Integrated AES-256 encryption with automated private-key generation and secure key handling workflows to ensure confidentiality and resilience against brute-force attacks.
• Designed and implemented a secure backend key-management database following industry best practices, including encrypted key storage, access-controlled retrieval, and audit-ready logging.

Interactive Exploration and Engagement Platform

• Developed a modern web platform visualizing 30 curated local points of interest using custom icons, metadata, and interactive map elements.
• Implemented a recommendations page enabling users to submit new locations, facilitating community-driven content expansion.
• Designed flexible content schemas and frontend components supporting search, filtering, and dynamic rendering.

Shell Terminal (C)

• Developed a fully functional Unix-like shell in C supporting command execution, piping, background processes, forks, and directory utilities (e.g., ls).
• Implemented process management, signal handling, IO redirection, and job control to mirror standard shell behaviors.
• Added display and formatting options for improved usability and command visibility.

RISC-V Operating System Development (xv6 enhancements)

• System Calls: Implemented syscall tracing, sysinfo, and optimizations to reduce syscall latency.
• Paging: Added page-table printing utilities and logic to detect accessed pages for memory tracking.
• Traps & Exceptions: Wrote trap handlers in RISC-V assembly, implemented backtrace support and alarm/timer handling.
• Kernel Threads: Extended the kernel with thread support using a clone() implementation modeled on fork(), created a user-level threading library and lock primitives.
• Net Driver: Implemented a functional E1000 network driver enabling packet transmission/reception.
• Filesystems: Added support for large files and symbolic links to improve POSIX-like behavior.

AI Data Loss Prevention Program

• Built a cross-platform DLP agent that connected to AI platforms via Firefox to detect outbound text and prevent sensitive data leakage.
• Developed a command-line interface to edit a custom website blacklist and a file allow-list for safe types.
• Compiled advanced regex rulesets to identify sensitive data patterns (credentials, financial identifiers, PII).
• Implemented a file-analysis agent to scan selected directories and flag confidential or sensitive files.

Network Security Architecture – Enterprise Defenses (School Project • Spring 2025)

• Designed a comprehensive enterprise defense plan addressing modern attack vectors (scanning, MITM, session hijacking, credential theft, routing attacks).
• Specified vulnerability scanning strategy, IDS/IPS deployment, DDoS mitigation priorities, MFA, key management, and encryption policies aligned with best practices.
• Proposed firewall, proxy, VPN architecture, redundancy models, and covert-channel detection strategies for layered defense.
• Developed operational recommendations for logging, onion-routing detection, beaconing host isolation, and incident response.

Full Stack MERN Application — React, Node, MongoDB

• Built a React front end that sends HTTP requests to a REST API to perform full CRUD operations.
• Engineered a movie-management UI with dynamic components and state-driven rendering using the Fetch API.
• Implemented server-side CRUD, integrated database persistence, and deployed the application to cloud hosting.

REST API Project

• Designed and implemented RESTful endpoints supporting resource creation, retrieval, updates, and deletion.
• Added route validation, robust error handling, and JSON-based data interchange for reliable client communication.
• Structured the API for modularity and scalability to support frontend and microservice consumers.

Integrated Relational Database Web System

• Designed a normalized 7-entity relational database for a mock marketplace, modeling customers, products, orders, and relationships.
• Implemented schema constraints, foreign-key cascades, indexing strategies, and full SQL CRUD operations for all entities.
• Built dynamic UI components enabling users to view, add, and manage data linked to the relational model.

Atomic Chess Game

• Developed a playable Atomic Chess implementation with custom movement logic and explosion-based capture mechanics.
• Implemented board-state management, legal move validation, and win-condition detection while maintaining performance.
• Provided an interactive interface (CLI or GUI) to play full matches and test variant rules.

Technical Tools & Platforms:

Splunk, Linux, SQL, MongoDB, MariaDB, CLI, Django, Power BI, MATLAB, Autopsy, FTK Imager

Programming Languages & Frameworks:

C++, C, Python, JavaScript, MASM, HTML, CSS, React, Node.js

Other:

Git, debugging tools, system administration fundamentals

Languages:

Dutch — Native; English — Native; German — Beginner; Spanish — Beginner

Travel:

Traveled to 16 countries across 3 continents.

Lived in the Netherlands for 5 years; spent 3 months in Belgium; 2 weeks in Japan; 1 week in South Korea; 2 weeks in Italy.