Junior Cybersecurity Engineer

Systems and infrastructure work shaped by security thinking.

I work across secure system operations, infrastructure support, database reliability, and defensive security practice. My resume is anchored in enterprise environments, Linux and Windows administration, and a current Master of Cybersecurity at ULB.

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  • System hardening, secure configuration, and incident-oriented operations
  • Database access control, integrity validation, and operational reliability
  • Security practice through labs, CTFs, Cybersecurity Challenge Belgium, and SANS NetWars
daniel.ishimwee@gmail.com github.com/danishimwe linkedin.com/in/daniel-ishimwe-k
Portrait of Daniel Ishimwe
Current direction Cybersecurity, infrastructure operations, and secure platform support

4

Professional roles

6

Technical domains

5

Certification tracks

2

Security competitions

Profile

A systems background with a clear security trajectory.

My experience spans research infrastructure, tax systems, enterprise storage platforms, and software development. Across those settings, the common thread has been dependable operations: securing environments, validating system integrity, improving access control, and resolving incidents under pressure.

The current emphasis is defensive security. That includes secure configuration, log analysis, vulnerability assessment, network security fundamentals, and hands-on practice through labs and competitions.

Recent environments

Companies Experience

KU Leuven logo KU Leuven - COSIC Secure research infrastructure and online voting systems Rwanda Revenue Authority logo Rwanda Revenue Authority Database operations, system support, and tax platform data integrity Mitra Systems logo Mitra Systems IBM Power Systems, storage, health checks, and high availability
A to Z Technology Systems Software development and workflow automation

Core expertise

My Expertise

Cybersecurity

Hardening, analysis, and investigation

Secure configuration, vulnerability assessment, log review, access control management, cryptography fundamentals, and incident investigation.

  • System hardening
  • Secure configuration
  • Log analysis
  • Risk assessment

Systems

Enterprise infrastructure operations

IBM Power Systems, FlashSystem, Storwize, system upgrades, monitoring, health checks, and secure infrastructure support for critical services.

  • IBM Power
  • Storwize
  • FlashSystem
  • High availability

Cloud and virtualization

Platform exposure with lab-driven practice

IBM Hybrid Multicloud, VMware, VirtualBox, Firebase ecosystem work, and virtualized environments used for attack simulation and defensive analysis.

  • VMware
  • VirtualBox
  • Firebase
  • Hybrid cloud

DevOps and tooling

Operational tooling that supports reliability

Git, Docker, Vagrant, Ansible, Linux server management, deployment workflows, DNS configuration, and domain hosting.

  • Git
  • Docker
  • Ansible
  • DNS

Development

Programming across systems and web delivery

C, C++, Python, Java, JavaScript, PHP, HTML, CSS, Flask, React, Next.js, backend API development, and automation scripting.

  • Python
  • JavaScript
  • React
  • Next.js

Databases

Integrity, performance, and access control

MySQL, MariaDB, PostgreSQL, MongoDB, database design, performance tuning, and validation work that keeps operational data dependable.

  • MySQL
  • MariaDB
  • PostgreSQL
  • MongoDB

Experience

My career history.

KU Leuven - COSIC

IT Specialist

Leuven, Belgium

Nov 2023 - Nov 2025 Research infrastructure and secure operations
  • Implemented system hardening and secure configurations across Linux and Windows environments.
  • Managed secure infrastructure supporting research services and online voting systems.
  • Enforced database access control policies and improved performance reliability.
  • Contributed to operational security validation and system integrity checks.
  • Investigated and resolved infrastructure and security-related incidents under time constraints.

Rwanda Revenue Authority

EBM IT Officer

Kigali, Rwanda

Sept 2020 - Jan 2023 Tax systems and data integrity
  • Installed and configured the Electronic Billing Machine software used for tax collection.
  • Managed and maintained databases, ensuring data accuracy and compliance.
  • Conducted local audits and validated data integrity.
  • Ensured systems reported data seamlessly into centralized databases.
  • Provided customer support and resolved software and system issues.

Mitra Systems

System Engineer

Blantyre, Malawi

Nov 2019 - June 2020 Enterprise systems and storage
  • Installed, configured, and maintained IBM Power Systems and Storwize or FlashSystem storage solutions.
  • Performed system health checks, monitoring, and reporting.
  • Supported system upgrades and preventive maintenance to ensure high availability.
  • Designed storage and database configurations for scalability and reliability.
  • Collaborated on SAP HANA deployments on IBM POWER platforms.

A to Z Technology Systems

Software Developer

Kigali, Rwanda

Dec 2014 - June 2016 Application development and automation
  • Developed and maintained software applications in multiple programming languages.
  • Automated repetitive tasks using scripts to reduce manual workload.

Security practice

Hobbies

Home lab

Virtualized Linux and Windows security lab

Built for log analysis, attack simulation, and system-level observation across different operating environments.

CTF work

Web exploitation, cryptography, and network analysis

Challenge-based practice used to sharpen investigation habits, structured debugging, and technical depth under constraints.

Competitions

Cybersecurity Challenge Belgium and SANS NetWars

Competitive environments that reinforce offensive understanding, defensive reasoning, and fast signal extraction from limited evidence.

Contact

Let's connect.

If you want the exact resume, use the PDF. If you want the summary version, this homepage now reflects the same profile, dates, and technical emphasis.

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