BUT Informatique

BUT 2023

L'IUT de Lannion

Story

After the Bac, I was accepted into the BUT Computer Science program via Parcoursup. I chose the Lannion campus and leaned into the data-oriented track.

Details

<abbr title="Bachelor Universitaire Technologique">BUT</abbr> Computer Science

BUT Computer Science logo

Designing, creating and implementing IT solutions that meet the digital transformation needs of companies is the daily life of the holder of the BUT in IT, regardless of the sector in which their company works.

In three years after the baccalaureate, the BUT offers university training that combines theory and practice, with an emphasis on progressive professionalization for rapid integration, while guaranteeing a sufficient scientific level to allow those who wish to continue their studies.

The holder of the BUT specializing in IT is competent on technical and methodological levels while being aware of current issues (data security, cloud computing, artificial intelligence), on societal, legal, ethical and environmental issues related to the uses of digital technology.

At the end of a one-year common core, the student will be able, depending on their professional project, to choose one of the four paths offered by the IT specialization.

Officiel BUT Computer Science syllabus

Year-by-year progression

The BUT is organized into 6 skills:

Year 1 — Discovery and practice

Main goal: understand how things work by building them, fast.

A hands-on year, focused on doing, where complexity stays visible and manageable.

  • Skill 1: Create

    Develop — that is, design, code, test and integrate an IT solution for a client.

    • Implement simple features from an expressed need.
    • Translate a problem into elementary algorithms.
    • Produce readable, tested, documented code.
    • First individual or pair projects.

  • Skill 2: Optimize

    Offer computer applications optimized according to specific criteria: execution time, precision, resource consumption.

    • Analyze straightforward algorithmic solutions.
    • Compare performance and complexity.
    • Choose reasonable algorithms for a given context.
    • First optimization reflexes.

  • Skill 3: Administer

    Install, configure, make available, maintain operational infrastructures, services and networks and optimize an organization's IT system.

    • Install and configure a workstation.
    • Discover operating systems and basic network services.
    • Understand client/server roles and network exchanges.
    • Apply elementary security practices.

  • Skill 4: Manage

    Design, manage, administer and exploit company data and make available all the information for good management of the company.

    • Design and create a relational database.
    • Write simple SQL queries.
    • Use data to answer a functional need.
    • Stay aware of data quality and coherence.

  • Skill 5: Lead

    Satisfy user needs with regard to the customer value chain, organize and manage an IT project using traditional or agile methods.

    • Collect and formalize user needs.
    • Organize teamwork.
    • Plan and track simple projects.
    • Communicate in writing and orally.

  • Skill 6: Collaborate

    Acquire, develop and exploit the skills necessary to work effectively in an IT team.

    • Collaborate inside project groups.
    • Use collaborative tools.
    • Account for human and organizational constraints.
    • Develop a professional posture.

Overall synthesis

Why choose the BUT in Computer Science?

  • The program matches my interests: software engineering and data;
  • The Lannion IUT campus is close to home.

Global synthesis

The curriculum reads like a climb in abstraction and responsibility:

  1. Make things work;
  2. Make things work within a clear frame;
  3. Make things work at scale.

That mirrors the progression of roles in the industry while keeping a solid technical base.

Personal view

I particularly enjoyed the first year: immediate immersion into practice with theory in parallel.

It fits how I learn best: learning by doing and concrete deliverables.

The following years add the tools needed to understand real-world constraints and modern systems.

Next steps

After the BUT, I intend to continue toward an engineering degree.

Schools on my radar: ENSSAT (Lannion), ENSI (Caen), ENSIMAG (Grenoble).

Professional experience

My second-year internship at Engie was my first true experience inside a large team, with visible impact.

Beyond technical skills, two lessons stood out:

  1. I am more comfortable when stakes are concrete, measurable, and immediate. When a project helps someone directly, I stay aligned. For more theoretical or administrative work, I need extra structure.
  2. I paired with another intern. Continuous feedback can be a strength or friction. Communication, clear task boundaries, and playing to each person’s strengths keep it productive.

Since that internship, I returned to Engie as an apprentice, contributing to various development missions.

These experiences solidified my plan to become a software engineer.

IUT of Lannion entrance
The IUT of Lannion (Côtes d'Armor, France). This is where I am doing my BUT in Computer Science.