Curriculum

Vitor Holanda

Contact: vitor.holanda@ccc.ufcg.edu.br · bartmoss77@tutanota.com
GitHub · LinkedIn

BSc in Computer Science
Universidade Federal de Campina Grande 2020 – 2026

Designed and implemented infrastructure to host services for the laboratory community.
Planned and deployed KVM-based virtualization stacks from scratch, significantly expanding service capacity and flexibility.
Designed, assembled, and managed physical servers and workstations supporting virtualized environments, using Proxmox and KVM.

Designed and implemented backup infrastructure for KVM virtual machines and file-based workloads.
Configured and managed Dell servers and general-purpose servers.
Deployed a custom backup server using six 2.5” drives in RAID 10, mounted in a custom 3D-printed drive holder, ensuring high redundancy and data integrity.

Simulated and validated network topologies using Cisco Packet Tracer.
Standardized and reorganized server rack infrastructure, including structured cabling with a cascading architecture, improving network design, throughput, and maintainability.
Upgraded network infrastructure from inconsistent 100 Mb/s links to stable 1 Gb/s connectivity, enabling full utilization of available bandwidth.
Configured and optimized Ubiquiti UniFi access points and administered the UniFi Controller to maximize wireless coverage and performance.
Repurposed legacy networking equipment by installing OpenWrt on older routers, extending hardware lifecycle and reducing costs.

Administered and secured pfSense firewalls, including:
- Migration from ad-hoc script-based backups to documented best practices
- Secure, encrypted configuration backups
- Management of VPNs, threat detection, monitoring, and advisory systems
Deployed and maintained security and monitoring tools, including OpenVAS for vulnerability scanning.
Developed a prototype access-control system using security cameras and AI for controlled laboratory access and person identification.
Implemented hot-standby firewall backups, allowing rapid replacement in case of primary firewall failure.

Deployed and managed monitoring systems, including Zabbix, Checkmk, UniFi Manager, and virtualization management tools.
Implemented asset tracking by maintaining an inventory of system serial numbers to identify and manage laboratory-owned equipment.
Developed a monitoring dashboard (Python, HTML, CSS) to track UPS system status during power outages.
Mitigated internet downtime during power failures by extending UPS capacity for a centralized university internet concentrator, enabling approximately 1 hour of continued connectivity.

Deployed and managed services using Docker for containerized workloads and service isolation.

Performed general system administration tasks, including:
- Budget planning and procurement of laboratory equipment
- Maintenance of notebooks, desktops, printers, projectors, UPS units, and power supplies

April 2025 – Present (Part-time)

Assisted in the development of smart agents aimed at improving Dell customer support workflows.
Developed LLM-based agents using LangChain and LangGraph, including experiments with tool calling and MCP servers.
Prototyped and evaluated agent architectures for real-world customer interaction scenarios.
Conducted prompt engineering and prompt-injection (red teaming) tests, identifying vulnerabilities and contributing fixes to improve agent robustness and safety.

Deployed state-of-the-art LLM benchmarks to support data-driven decision-making (e.g., selecting the most suitable models for translation tasks).
Benchmarked multiple LLM approaches using Arize Phoenix, including:
- Implementation of custom evaluation metrics
- Analysis of agent behavior, latency, and response quality
Performed descriptive statistical analysis on datasets, including token usage analysis for prompts and responses.

Expanded an evaluation dataset from 42 to over 120 questions, increasing coverage, variability, and robustness for LLM agent testing.
Conducted multilingual dataset translation using LLMs to support evaluation across different languages.
Researched, reviewed and implemented benchmarking from state-of-the-art academic literature focused on machine translation and LLM evaluation.

Evaluated an existing FAQ system using Retrieval-Augmented Generation (RAG), producing reports on system quality and implementation status.
Modified and tested hybrid search approaches (semantic + lexical) to improve LLM response relevance and accuracy.

Deployed a web-based interface for testing APIs and LLM services when remote VDI environments restricted required tooling.

Teaching Assistant (Volunteer)
Graph Theory & Concurrent Programming

Assisted professors during laboratory and practical sessions for undergraduate courses.
Supported students with problem-solving, algorithm design, and theoretical concepts in Graph Theory.
Helped students during hands-on activities, clarifying assignments and providing technical guidance.
Assisted in the correction and review of student assignments and exercises.
Acted as a bridge between students and faculty, reinforcing course content and improving learning outcomes.

Volunteer – Computer Science Department

Provided general IT maintenance and troubleshooting for the Computer Science department, supporting faculty, staff, and students.
Assisted with deployment and reinstallation of Linux and Windows operating systems on laboratory and staff machines.
Helped with network cabling, basic network setup, and device organization across laboratories.
Maintained and updated inventories of departmental equipment, including desktops, notebooks, projectors, and peripherals.
Recovered and repurposed an abandoned SonicWall firewall, configuring it as a sandbox and learning playground for students.
Participated in the “Imagem Prova – Version 1” project, involving the creation of a customized Linux image used during exams to ensure fairness by restricting unauthorized tools and resources.
Developed a Bash-based access control solution using iptables and dig to enforce a custom domain whitelist/blacklist, limiting network access to approved domains during assessments.
Actively supported day-to-day maintenance activities across multiple computer labs, ensuring system availability and reliability.

Operating Systems: Linux, FreeBSD
Containers & DevOps: Docker, Git
Networking & Systems: Network administration, system administration, virtualization (KVM, Proxmox)
Programming & Development: Python (Flask, FastAPI), C++, Java, Haskell, Prolog, React
Embedded Systems & Hardware: SBCs, microcontrollers, embedded programming