This portfolio
HTML · CSS
The public folio: the work, the short path, and a way to get in touch. The same pages are also at the root site.
Arnold Rurangwa Computer engineer · Kraków
Arnold Rurangwa
I build software that has to hold up. Household ledgers, lab tools, shopfronts, maps, and a security desk. Trained in cybersecurity and computer networks.
- Based
- Kraków, Poland
- Role
- Data Operator · Cognizant
- Phone
- +48 575 217 930
- Focus
- Computer engineering
Selected work
Fourteen public projects, on a ring that keeps turning. Drag it to hold one still. A live link where one exists, and the source either way.
Hamwe Tourism
React · TypeScript
A storefront for hosted tours in Rwanda: catalogue, booking, maps, and tickets. The same repository publishes the root site.
AI & Data Scientist Roadmap
Python
A ten-stage study path with quizzes, tests, and projects, lined up with roadmap.sh.
Elvora
Flutter · Dart
An on-device health coach for food, training, hydration, and recovery. The repository is NFL Bot. It runs on iOS, Android, and the web.
STANS
TypeScript
A traffic desk on OpenStreetMap: Nominatim search, OSRM routes, GPS, weather, and Overpass points of interest.
Africa Shield Cyber Centre
JavaScript
A threat desk for East Africa. Published feeds, a map, and incident notes that stay in the browser.
Boutique La Différence
HTML · JavaScript
A shop site for the supermarket in Zindiro, Kigali: catalogue, categories, and the counter.
AbroadCost
JavaScript
A country budget planner for 195 countries: living costs, salaries, and travel. ARNOVA Group.
2daymovie
Python
Official film and series trailers, and where to watch legally. No full films are hosted.
Kingdom Life Kraków
HTML
Public site for the English-speaking church in Kraków. Sundays at noon, at Hotel Centrum.
Peakwise
Python · ML
An AI-assisted reading of LC-MS/MS peaks into candidate structures and SMILES. Built as a lab tool.
Our Money Hub
JavaScript
A household ledger. Shared income, savings, expenses, and plans. The default currency is the złoty.
RAGI
TypeScript
A private secretary. The code is public, and each account's notes stay encrypted.
GitHub profile
Markdown
The public profile: the short path, and the list of the work.
01 This portfolio
Toolkit
What I use on the work, grouped the way I reach for it.
AI and machine learning
- Applied AI products
- LangGraph · agent workflows
- On-device / edge AI
- Scientific ML tooling
- FastAPI model services
- AI governance & policy
- Prompted systems
- Python for ML
Automation
- Scripting & automation
- Python · Bash
- CI/CD pipelines
- GitHub Actions
- REST API integration
- Workflow design
- Terraform (IaC)
- Docker
Data engineering
- Data validation & quality
- SQL · MySQL
- ETL-style processing
- Structured / semi-structured data
- JSON · APIs
- Inventory & record systems
- Exception handling
- Documentation
Software and platforms
- JavaScript · TypeScript
- React
- Flutter · Dart
- HTML5 · CSS3
- Microsoft Azure
- Linux
- Git · GitHub
- Networking foundations
Experience
Most recent first. The Escola internship overlapped the logistics job and the degree.
-
Sep 2025 – Present
Kraków, Poland
Data Operator
Cognizant
- Review, validate, and maintain structured and semi-structured data for accuracy and completeness.
- Find inconsistencies, duplicates, and gaps, then apply corrections under defined quality rules.
- Process high-volume workflows, investigate exceptions, and improve recurring error patterns with the team.
-
May 2022 – Aug 2025
Wrocław, Poland
Logistics Specialist Operator
LG Energy Solution
- Prepared materials and finished goods for movement and shipment with full label and quantity checks.
- Used barcode and inventory systems to keep stock records accurate under production pressure.
- Coordinated with logistics, warehouse, quality, and production for on-time, traceable delivery.
-
Feb 2023 – Jul 2023
Warsaw, Poland (remote)
E-Learning Content Developer
Escola S.A · Internship
- Built clear digital learning materials, tutorials, and exercises for online courses.
- Researched technical topics and turned them into structured learner resources.
- Reviewed content for accuracy and clarity while shipping against remote deadlines.
-
Sep 2021 – Feb 2022
Kigali, Rwanda
Technical Support Specialist
I&M Bank · Internship
- Troubleshot hardware, software, OS, and network issues for bank employees.
- Configured workstations and peripherals; handled access resets under IT security policy.
- Documented and escalated first-level issues to infrastructure teams when needed.
Certificates
Finished credentials. The issuer is named when I have it.
-
AI Augmented Engineering Lead — LangGraph · Azure with GHCP
Professional credential
-
Oracle Cloud Infrastructure Foundations
Oracle
-
CCNA: Enterprise Networking, Security, and Automation
Cisco Networking Academy
-
AI Essentials: Policy, Governance and Use
Professional credential
-
Ethical Hacker
Cisco Networking Academy
-
Introduction to Cybersecurity
Cisco Networking Academy
-
Exploring IoT with Cisco Packet Tracer
Cisco Networking Academy
-
Python Essentials 2
Python Institute
-
IT Help Desk Professional
Google Career Certificates
-
The Complete Nmap Ethical Hacking Course
Udemy
About
I am a computer engineer. The work has been software, cybersecurity, networking, data analysis, and technical support.
I like a hard fault and a system that stays fixed. I live in Kraków. From 2022 to 2025 I studied computer engineering at Wrocławska Akademia Biznesu, in cybersecurity and computer networks.
Education
B.Sc. Computer Engineering — Cybersecurity & Computer Networks
Akademia Techniczno-Artystyczna · Wrocławska Akademia Biznesu (ATA Wrocław)
Let’s talk
For a role, a collaboration, or a technical question — email and phone both reach me in Kraków.
Open for engineering roles, applied AI, and systems work.
- Phone +48 575 217 930
- GitHub Arnold-RG (opens in a new tab)
- LinkedIn rurangwa-arnold (opens in a new tab)
- Location Kraków, Poland
- Resume Download PDF