If you hope to finish EPFL’s Computer Science master’s with research in a university lab, plan the industry internship first. EPFL’s current programme structure requires the internship to be completed and validated before a Master’s project at EPFL or another university. Finishing the last working day at a company is therefore only one milestone; academic validation is another.
This matters when comparing a summer internship with a semester in industry. The choice affects the sequence of coursework, research and living costs. A promising lab topic does not remove the internship requirement, and an employer’s offer does not establish EPFL approval.
The following is a planning framework based on official guidance checked on 15 October 2026. Your admission cohort, individual record and the Section’s decisions still control the actual plan.
Start with the thesis setting
The Computer Science programme structure separates the 90-ECTS Master’s cycle from the 30-ECTS Master’s project. It lists an 18-week project at EPFL and a 26-week project outside EPFL, including the specified vacation week. These are project durations, not promises about how quickly your entire degree will finish.
For a university-based project, work backwards from a feasible project start to an earlier industry experience and its validation. For a project in industry, EPFL provides a combined route that can satisfy the internship requirement without a separate prior internship. That route still requires an academic project and supervision; a normal company job cannot simply be renamed a thesis.
Read the Master’s project requirements before treating a research discussion as a confirmed place. Academic eligibility, the topic, supervision, dates and registration each need attention. Conditional admission to the project has its own criteria; it does not cancel the internship prerequisite for a university setting.
Compare the two standalone options
The IC industry-internship guidance distinguishes a short summer internship of at least eight consecutive full-time weeks from a six-month full-time semester internship. The summer option must fit around exams and the return to autumn studies. The semester option occupies a different part of the academic calendar; courses cannot be taken alongside that long internship.
A summer route may preserve a coursework semester, but only if a suitable opportunity and the required dates actually align. A semester route gives a longer professional period, but changes the sequence of study and accommodation. Neither label tells you whether a host will select you, what you will earn or whether a future employer will hire you.
Compare the supervised technical tasks with the skills you want to develop. Ask what you would produce, how feedback works and which experience you could later explain honestly in an interview. Our project, internship and placement guide helps separate learning structure from recruitment promises.
Put approval before commitment
For an independently found opportunity, the IC guidance requires Section pre-approval before a commitment to the company. Check role content, dates and the required agreement first. Administrative approval before starting and successful validation after completion are different gates.
EPFL recommends beginning the internship search about four to five months ahead. Use that as preparation guidance, not an offer deadline or a placement guarantee. Academic acceptance also does not establish permission to work: the employer and student must check the applicable authorisation process before the proposed start.
There is a possible formal exemption for qualifying professional experience. The published criteria include at least a consecutive full-time year after the bachelor’s and before the EPFL master’s, relevant to the field and not undertaken alongside another degree. Assessment is individual. A CV or an applicant’s own interpretation is not an exemption decision; ask the Section how any granted exemption affects the thesis plan.
Leave space for validation
At the end of the internship, the Section needs the required evaluations and administrative documents before validation. Do not assume that an employer’s end date automatically unlocks a thesis beginning the following Monday. Confirm what evidence will be recorded, who supplies it and when the Section can confirm completion.
The July 2026 Computer Science study guide, section 5 reinforces the sequence. Its summer/autumn 2027 wording sits within that guide’s student context; it is not a universal first-internship date for every EPFL applicant or cohort. Likewise, the current structure distinguishes students who entered before autumn 2025 from later entrants. Ask for the plan applicable to your own admission.
Make a five-field backward planner
Fill in these fields before choosing a thesis window. Blank answers identify questions, not failed applications.
- Your record: admission cohort, applicable study plan and remaining academic requirements.
- Thesis target: university or industry setting, proposed start window and supervision status.
- Internship route: summer, semester or a formally assessed exemption; intended dates and relevant tasks.
- Approval evidence: Section decision, agreement and applicable work-authorisation steps before starting.
- Completion buffer: evaluations, administrative documents, expected validation confirmation and a fallback start if delayed.
Keep a separate funding line for extra living time and moving costs. Do not use hoped-for internship earnings to close a funding gap. The Les Roches route-funding example illustrates that budgeting distinction in a different programme; its rules do not apply to EPFL. For lab selection, use the research-supervisor fit questions.
Your next step is to take the completed planner to the relevant EPFL Section guidance route and confirm the unresolved sequence. A realistic order of approvals is more useful than a neat two-year calendar built on unconfirmed assumptions.
