Welcome to my portfolio

Hi, I'm Cooper Timmins

Junior Developer

Final-year Computer Science student with 900+ hours of industry experience building scalable web applications, APIs, databases, and cloud/DevOps-focused projects.

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About Me

I am a junior developer and final-year Computer Science student with 900+ hours of practical development experience. My work spans production marketplace features, full-stack web applications, REST APIs, SQL databases, Azure deployment, and a completed Cloud Technologies and DevOps specialisation.

I bring a reliable, practical mindset from my background as a concrete finisher, crew leader, and office manager. Based between Gold Coast, Australia and Rzeszów, Poland, I am focused on building clean, useful software and growing in backend, cloud, and full-stack development.

900+Hours of experience
10+Projects completed
4Academic scholarships
Tech Stack
C#
C#
JS
JavaScript
⚛
React
N
Node.js
.NET
.NET
SQL
SQL Server
AZ
Azure
DO
DevOps
H5
HTML5
Git
Git
Core Skills

What I Work With

CODESoftware Development
APIREST APIs & Backend Systems
DBSQL Databases & Data Logic
AUTHAuthentication & Secure Access
CLOUDCloud Deployment & Storage
DEVOPSCloud Technologies & DevOps
WEBFrontend & Web Development
GITGitHub & Version Control
DEBUGDebugging & Troubleshooting
SUPPORTTechnical Support & Problem Solving
Currently Learning

Growing My Backend & Cloud Skillset

.NETASP.NET Core Web APIs
CI/CDDeployment Pipelines
DOCKERContainer Basics
TESTAPI Testing & Validation
AZUREAzure App Services
ARCHClean Architecture Patterns
Main Experience

Professional Experience

All Board Trader - Junior Developer

Internship to Junior Developer | 2024-2026 | 900+ Hours

  • Worked on a production marketplace application for buying and selling board sports equipment.
  • Built and integrated REST APIs for user accounts and marketplace listings.
  • Worked with SQL databases, backend logic, and secure data handling.
  • Contributed to migration from Firebase to a secure server-based architecture.
  • Used Git and GitHub for version control and team collaboration.

Business & Operations Background

Construction, office management, business administration

  • 7 years of experience as a concrete finisher and crew leader, requiring reliability, planning, teamwork, and deadline delivery.
  • Office management experience involving communication, documentation, scheduling, and workflow improvement.
  • Business administration diploma supporting professional communication and organisation.
Featured Projects

Full-Stack & Backend Work

OnlineReader

Cloud-Based Reading Platform

Full-stack application for reading PDF and EPUB books in the browser with authentication, cloud storage, and progress tracking.

  • Built JWT login and registration.
  • Integrated Azure SQL and Azure Blob Storage.
  • Deployed frontend with Vercel and backend with Azure App Service.
GitHub Repository →
ReactNode.jsExpressAzure SQLJWT

Cinema Seat Reservation System

C# / .NET Booking System

Full-stack seat booking system built with C# and .NET for a university software project.

  • Built frontend and backend layers for cinema seat reservations.
  • Implemented basic authentication and authorization for multiple users.
  • Designed reservation logic for seats, users, and booking flow.
C#.NET 8EF CoreRazor PagesMVC

.NET 8 Web API Project

Backend API Practice

Backend API project focused on controllers, routing, validation, authentication, and database integration.

  • Built REST API endpoints using ASP.NET Core / .NET 8.
  • Practised routing, controllers, request parameters, and validation.
  • Used Swagger for API testing and documentation.
ASP.NET CoreREST APIsJWTSwaggerEF Core

Fish Game

Unity / C# Game Project

Interactive Unity game demonstrating player movement, collision detection, scoring, and gameplay state.

  • Implemented player movement using C# scripts.
  • Used Unity collision systems for object interaction.
  • Built scoring and gameplay logic.
GitHub Repository →
UnityC#ShaderLabHLSL
Database Projects

SQL & Data Modelling

Car Rental Database System

Relational database project built in Microsoft SQL Server.

  • Designed and populated a relational car rental database.
  • Created tables for clients, employees, cars, places, and rentals.
  • Wrote SQL queries for filtering, joins, grouping, aggregation, and reporting.
  • Practised normalization, relationships, and query logic.
SQL ServerJoinsAggregationNormalization

Library Book Borrowing System

Database project for managing books, users, borrowing, and returns.

  • Designed database structure for books, borrowers, loans, and returns.
  • Created SQL queries for borrowing history, availability, and reporting.
  • Practised relational database modelling and data integrity.
  • Built logic around book status, due dates, and user records.
SQLData IntegrityReportingRelationships
Technical Experience

Cloud, DevOps & Version Control

Cloud & DevOps Experience

  • Completed a Cloud Technologies and DevOps specialisation as part of my BSc Computer Science.
  • Deployed frontend applications using Vercel.
  • Worked with Azure App Service, Azure SQL, and Azure Blob Storage.
  • Resolved CORS issues between frontend and backend deployments.
  • Debugged database schema mismatches and cloud connection errors.
  • Managed environment variables and production configuration.
AzureDevOpsVercelCORSBlob Storage

GitHub & Version Control

  • Organised GitHub repositories with professional READMEs.
  • Used Git for commits, version control, and project tracking.
  • Documented projects with screenshots, tech stacks, and setup instructions.
  • Maintained public repositories for portfolio presentation.
GitGitHubREADMEDocumentation
Education

Academic Background

BSc Computer Science

University of Information Technology and Management (WSIiZ)

Final Semester - Graduating in 2026. Recipient of 4x Academic Excellence Scholarships.

Completed specialisation in Cloud Technologies and DevOps.

Cloud TechnologiesDevOpsSoftware DevelopmentDatabasesBackend Systems

MSc Computer Science

Krakow University of Technology

Planned start: 2026.

Computer SciencePlanned
Certifications

Verified Badges

My verified digital badges and certifications are available through Credly.

View Credly Profile →
Contact

Let's connect

Email: Coopyy@live.com

Phone: +61 0435744450

WhatsApp: +48 664466743

GitHub: github.com/Coopy1997

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