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I'm Charlie Giannis, a computer science student at the University of Toronto Mississauga. I’m passionate about building user-friendly apps and solving real-world problems with code. I enjoy collaborating on cross-functional teams to ship clean, reliable software. When I’m not coding, I like mentoring peers, teaching, and exploring AI-powered creative projects. I aim to grow as a full-stack developer and contribute to impactful products.…I'm Charlie Giannis, a computer science student at the University of Toronto Mississauga. I’m passionate about building user-friendly apps and solving real-world problems with code. I enjoy collaborating on cross-functional teams to ship clean, reliable software. When I’m not coding, I like mentoring peers, teaching, and exploring AI-powered creative projects. I aim to grow as a full-stack developer and contribute to impactful products.

Charlie Giannis

App Developer, Front-End Developer, Back-End Developer, +2

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I'm Charlie Giannis, a computer science student at the University of Toronto Mississauga. I’m passionate about building user-friendly apps and solving real-world problems with code. I enjoy collaborating on cross-functional teams to ship clean, reliable software. When I’m not coding, I like mentoring peers, teaching, and exploring AI-powered creative projects. I aim to grow as a full-stack developer and contribute to impactful products.…I'm Charlie Giannis, a computer science student at the University of Toronto Mississauga. I’m passionate about building user-friendly apps and solving real-world problems with code. I enjoy collaborating on cross-functional teams to ship clean, reliable software. When I’m not coding, I like mentoring peers, teaching, and exploring AI-powered creative projects. I aim to grow as a full-stack developer and contribute to impactful products.

Available to hire

I’m Charlie Giannis, a computer science student at the University of Toronto Mississauga. I’m passionate about building user-friendly apps and solving real-world problems with code. I enjoy collaborating on cross-functional teams to ship clean, reliable software.

When I’m not coding, I like mentoring peers, teaching, and exploring AI-powered creative projects. I aim to grow as a full-stack developer and contribute to impactful products.

Skills

Experience Level

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

iOS Software Developer (Summer Internship) at Rakuten

May 1, 2025 - September 1, 2025

Built and maintained iOS apps, ensuring performance and quality. Resolved bug tickets, collaborated on design, and published to the App Store. Led AI-first 'Rakuten Campus' initiative, expanding the student demographic.

Sports Instructor & Aquatics Attendant at City of Toronto

May 1, 2024 - Present

Coordinated training and curriculum, improving the health and safety of kids aged 6-12. Performed pool maintenance, chlorine handling, and pH testing to ensure safe public facilities.

Math / Computer Science Teacher at iLearning

May 1, 2023 - December 1, 2024

Taught grades 5-12 in-person and virtually, improving overall grades and engagement for approximately 15 students.

Sales Ambassador at CNE Foundation

August 1, 2023 - September 1, 2024

Sold 50/50 raffle tickets and managed POS and end-of-day cash balancing. Introduced social media promotion strategies, doubling ticket sales.

Tech Officer at UTM Computer Science Student Community

November 1, 2024 - Present

Hosted code workshops and social events, supporting Computer Science students. Maintained Vue.js website with Scrum processes, improving student resources.