Computer Science

Do you ever wonder how Google, social media platforms, Stripe or computer games work? Would you like to develop the next generation of cutting-edge computing technologies? If you are a logical thinker who likes problem solving and you enjoy subjects like mathematics, a degree in Computer Science could well be for you.

Special Entry Recommendations

We strongly recommend that all students in Computer Science should have a minimum Grade H4 in Leaving Certificate Mathematics, or equivalent.

Computer Science is one of the degree subjects available through the common entry Computer Science DN201 course.

The UCD Computer Science degree covers the fundamentals of Computer Science while also exposing students to the contemporary languages and technologies used in the industry. Key topics include programming, foundational mathematics, advanced software engineering, cloud development, theory of computer science, networks and security. The principal programming languages used are C, Java and Python. Specialised topics include computer graphics, game development, robotics, mobile development and others.

*Modules are subject to change each year and are not guaranteed by UCD.  

First Year

Core Modules:

• Introduction to Computer Architecture
• Computer Programming
• Functional Programming
• Software Engineering Project 
• Foundations of Mathematics for Computer Science
• Intro to Data Science and AI
• Critical Thinking
• Formal Foundation 1

Sample Option Modules (2025/2026 Academic Year):

• Introduction to Mathematics
• Matrix Algebra

Second Year

Core Modules:

• Digital Systems
• Databases and Information Systems
• Object-Oriented Programming
• Computer Networking
• Software Engineering Project 
• Introduction to Operating Systems
• Data Structures
• Algorithms
• Linear Algebra
• Formal Foundations 2
• Elective/Option Module

Sample Option Modules (2025/2026 Academic Year):

• Introduction to Ethics
• UNIX Programming

Third Year

Core Modules:

• Introduction to AI
• Information Security
• Programming for Big Data
• Web Development
• Graph Algorithms
• Formal Foundations 3
• Five Month Internship or Software Engineering Project

Sample Option Modules (2025/2026 Academic Year):

• Multi-paradigm Programming (If not taken in Stage 3, students must take COMP30950 Multi-paradigm Programming in Stage 4)
• Competitive Programming
• Connectionist Computing
• Human Computer Interaction
• Program Construction I
• Introduction to Research & Scientific Communication

Fourth Year

Core Modules:

• Computer Science Project

Sample Option Modules (2025/2026 Academic Year):

• Parallel Computing
• Distributed Systems
• Cloud Computing
• Deep Learning
• Machine Learning
• Human-Centred AI
• Generative AI: Language Models
• Game Development
• Data Mining
• Multi-Agent Systems
• Spatial Information Systems
• Optimisation
• Performance of Computer Systems
• Information Visualisation
• Advanced Wireless Networking
• Contemporary Software Development
• Information Theory
• Advanced Information Security
• Augmented & Virtual Reality
• Program Construction II
• Speech & Audio

Timetables & Assessment

Each student will have their own timetable based on their individual module selection. This is a full-time course and classes may include lectures, practicals and tutorials. Students will also be expected to study independently (autonomous student learning). Assessment varies with each module but may comprise continuous assessment of practicals, written exams and online learning activities.

It is possible to study abroad for a trimester, usually in the third year of the course. Universities that students have visited to date include the University of Auckland, New Zealand, the University of California, Irvine, USA, and Fudan University, Shanghai, China.

A UCD Computer Science degree equips you with fundamental skills for roles such as software developer, software architect, engineering manager, database designer, web developer, network engineer, systems administrator, or IT consultant. Graduates work in diverse domains including internet, telecommunications, healthcare, finance, online retail, gaming, and social networking. Some even start their own companies after graduating. With a BSc in Computer Science, you can pursue graduate study in computer science or related areas like business, mathematics, and engineering, or continue into PhD research at UCD or elsewhere.

• Level 5/6 QQI-FET
• Open Learning Entry Route
• Mature Entry Route
• DARE Entry Route
• HEAR Entry Route
• University Access

UCD Science Office

You can contact the UCD Science Office in the following ways:

• Submit your query using our dedicated Contact Form.
• Drop into the office in the UCD O'Brien Centre for Science, Science East, Room E1.09. Our office opening hours are 10am to 4pm (during term time).

This degree offers a comprehensive blend of theoretical knowledge and practical skills, which was perfect for my interests and career aspirations. I joined various UCD societies such as Netsoc, Women@compsci, Food Society and many more. This allowed me to develop leadership skills and form connections with students who share my interests. I completed my internship with SAP during my third year. This was a six-month internship and it provided me the opportunity to explore what it is like to work in a professional environment as well as learn what day-to-day life would look like in the workplace.

Kalkidan, Graduate