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Abdelrahman
Mohamed

I'm a software engineer who likes building things people actually use, then finding out exactly where they break.

Available full-time from January 2027

  • Canadian, TN-eligible for US roles
  • Calgary, open to relocation
  • Grad Dec 2026
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a small system you can break

Starting the simulation.

p50
–
p99
–
served
–
errors
–
160 requests/s
app servers
2
cache

Every request is simulated in your browser by a seeded event engine, the idea behind Systemlab.

Off the clock

Chess
Bullet, rated 2000
Training
At the gym
Collecting
Fragrances
Fuel
Another Red Bull

Work

2 featured · 4 more

Systemlab

Solo project, open source

A system design trainer built on a discrete-event simulator I wrote. You design an architecture, estimate its latency and cost, then run it and see where it breaks.

system-design-playground-pi.vercel.app/learn
Fig. 1A lesson after a run: the API server is pinned at 100% while the database sits at 12%, so p95 climbs to 4.8 s.
lessons in 12 chapters
70
tests
948
requests simulated in under 2 s
180K

Answers that hold across seeds

Each lesson's reference solution has to pass at every seed, not just the lucky one, so the engine is fully deterministic and runs in a Web Worker. Replication lag, quorums, retries, circuit breakers and region outages are all modelled.

  • TypeScript
  • Next.js
  • React Flow
  • Web Workers
  • Gemini
  • Vitest

CYD Soccer Academy platform

Sole engineer, May 2025 to now

Registration, Stripe billing, SMS and email, and roster sync for a youth soccer academy in Calgary. Families sign up and pay without anyone entering data by hand.

cydsoccer.com/register
Fig. 2Venues are filtered by the child's age, so a full group still shows but can't be picked. On the right, step one of registration on a phone.
active families
~300
Calgary venues
5
API routes
~90

Text messages that cost what they should

One curly apostrophe or emoji switches a whole SMS from GSM-7 to UCS-2, which cuts a billed segment from 160 characters to 70, so a 320-character notice went from 3 segments to 5 for every family. I added a sanitizer, a live segment and cost count in the broadcast composer, and the same check on the server.

  • Next.js
  • TypeScript
  • Stripe
  • Twilio
  • Resend
  • Google Sheets API
  • TeamSnap API

More projects

  • Road object detectionteam project

    Fine-tuned YOLOv8 and YOLOv11 on a 12-class Egyptian traffic dataset, with tuk-tuks and street banners that Western benchmarks don't have. I owned the v11 training and the accuracy-versus-cost comparison.

    • Python
    • PyTorch
    • Ultralytics

  • Vectorized Fashion AI (opens in a new tab)

    Multimodal product search with CLIP embeddings in FAISS and RAG-written descriptions.

    • Python
    • FAISS
    • Streamlit

  • KanDoIt (opens in a new tab)

    Kanban board with admin, manager and user roles.

    • Next.js
    • Prisma
    • PostgreSQL
    • Docker

  • Data bias detector (opens in a new tab)

    Upload a CSV and see class imbalance before you train on it.

    • Next.js
    • TypeScript

Experience

5 roles · Apr 2024 – now

  1. May 2025 – now

    Calgary

    CYD Soccer Academy (opens in a new tab)

    Software engineer and technical partner

    Sole engineer on the academy's booking and payments platform: registration, Stripe billing, SMS and email, roster sync and the staff dashboard.

  2. Sep 2025 – Apr 2026

    Calgary

    City of Calgary

    Software engineer, capstone project

    Built a Python ETL pipeline on Azure that pulls greenhouse-gas activity data from four business units into SQL Server, replacing a manual spreadsheet process, with validation that flags bad source data and Power BI reporting for staff.

  3. Nov 2025 – Jan 2026

    Remote

    Mercor

    Software engineering expert, AI training

    Wrote agentic coding evaluations from real GitHub repositories (CLI tools, data science, full-stack apps) and scored model attempts for correctness and performance.

  4. Mar 2025 – Jun 2025

    Calgary

    Customer Maps

    AI/ML intern, Google Innovate Program

    Built retail AI agents on Vertex AI and Google's Agent Development Kit to automate a recurring reporting workflow, with BigQuery pipelines over 100K+ records and React dashboards.

  5. Apr 2024 – Mar 2025

    Remote

    DATech

    AI evaluation contractor (RLHF)

    Reviewed and scored 1,000+ model-written code samples in Python, JavaScript and SQL for correctness, security and style, producing preference data for RLHF training.

Background

4 toolkits · 25 tools

Education

University of Calgary

BSc in Computer Science, graduating December 2026 · Dean's List, Faculty of Science (Winter 2023)

Courses I'd point to: web-based systems, database management, data structures and algorithms, design and analysis of algorithms, deep learning for vision, operating systems, computer networks.

Tools

Languages
  • TypeScript
  • Python
  • SQL
  • Java
Web and data
  • Next.js
  • React
  • Node.js
  • PostgreSQL
  • Supabase
  • SQL Server
  • Prisma
  • Stripe
AI and ML
  • LLM pipelines and evals
  • RAG and vector search
  • Vertex AI
  • Gemini
  • PyTorch
  • YOLO
Cloud and tools
  • Vercel
  • GCP
  • BigQuery
  • Azure
  • Docker
  • GitHub Actions
  • Power BI

Writing

9 posts · since Jun 2024

All 9 posts

Hiring for 2027?

I'm looking for a full-time software engineering role starting January 2027, in Calgary, remote, or somewhere I can move to. Canadian citizen, TN-eligible for US roles (no H-1B needed). Open to relocation.

Abdelrahman Mohamed smiling outdoors in the snow
Based
Calgary, AB
Available
Jan 2027
Works in
Canada · US (TN)
Relocation
Open