Mines Paris – PSL: organising your internships and placement agreement as a civil engineer

What the civil engineer cycle expects from company experience

The civil engineer cycle at Mines Paris – PSL lasts at least three years, divided into six semesters of 30 ECTS credits. According to the school’s public presentation, the course combines teaching, projects and professional experience, with a minimum of twelve months of experience in a company or organisation and a stay abroad of at least six months. These benchmarks show that the internship is not a mere add-on: it is part of how the degree is built.

The school’s page does not, however, detail the length of each period or the exact nature of each internship. Before starting your search, you therefore need to obtain the rules for your year group from the registrar’s office and your programme lead: permitted period, minimum length, any share to be spent abroad, and how it is validated.

Remember too that the course becomes more modular from the second year. Two students in the same year group may therefore have different calendars and expectations depending on their choice of track, mobility or double degree.

Company, laboratory or project: three ways to learn

The school highlights multidisciplinary engineering projects, carried from design to prototype, and a one-term immersion in one of its research centres or in a laboratory of the PSL institutions. A company internship sits alongside these experiences and does not serve the same purpose.

• In a company: you contribute to a real activity, with customers, budgets and deadlines. The learning is about organisation, decision-making under constraint and communicating with varied teams.
• In a laboratory: the question is posed with more distance. You learn to formulate a hypothesis, choose a protocol and accept that a result may be negative.
• In a school project: the setting is protected, which lets you try, make mistakes and start again before facing a professional environment.

Ask yourself what your profile lacks. A student who is already comfortable with calculation but has had little exposure to industrial constraints will gain from choosing a production site. One who is undecided about a doctorate will rather try out a research centre.

Spotting the sectors where a Mines Paris profile fits

The generalist training leads to very different fields: energy, materials, digital and data, environment, industry, consulting, finance. Rather than lining up twenty scattered applications, choose two or three areas and be able to justify them.

1. Note the courses and projects you really enjoyed, not those that sound good.
2. For each area, identify five organisations of different sizes: a large group, a mid-sized company, a young innovative company, a research centre and a public body.
3. Write in one sentence the question you would like to help answer. If the sentence stays vague, the assignment will be too.

Small organisations often entrust more responsibility, but supervision there is sometimes less formal. Large organisations offer proven methods, with a narrower scope at the start.

Where to look: the school’s network, offers and speculative applications

Mines Paris – PSL provides employers with a page for posting internships and jobs, which means that offers circulate through the school’s channels. Ask the corporate relations department and the registrar’s office how these offers are passed on to students and how long publication takes.

Some research centres also take interns every year. The Centre des Matériaux, for example, states that it hosts interns, apprentices and seasonal workers, while specifying that no offer was displayed at the time of consultation. An empty page does not close the door: it invites you to write in a targeted way, citing a specific topic from the team.

Alumni are another source. A short message to someone whose career interests you, with a concrete question, gets more replies than a general request for “opportunities”.

The placement agreement: who signs what, and in what order

In France, any internship in a professional setting rests on a three-party agreement between the student, the institution and the host organisation. It specifies the dates, the tasks, the place, the supervisor, the academic tutor, any stipend and the insurance rules. The school generally provides a template and a signing procedure; follow them rather than using a model found elsewhere.

1. First obtain a written agreement in principle from the organisation on the topic and the dates.
2. Have the topic approved by your academic adviser, who checks that it fits the curriculum.
3. Enter or send the information the school asks for, then have the agreement signed by all parties.
4. Never start work before it has been fully signed.

For an internship lasting more than two months, the host organisation owes a stipend; the minimum amount is set by regulation and changes over time, so check it when you sign. An internship cannot exceed six months in the same organisation during an academic year, except in particular cases provided for by law.

Applying: the CV, cover letter and interview of a future engineer

A recruiter first reads what you have done, then what you know. Replace lists of subjects with achievements: “modelled a heat exchanger in a team of four, compared two meshes, presented the deviations to a lecturer”. A project well described in three lines is worth more than a list of ten software packages.

The cover letter must answer three questions: why this organisation, why this topic, why you. Avoid sentences that could apply to any company.

At interview, prepare two or three examples in which you had to structure a fuzzy problem. Expect technical questions that are simple but probing: the recruiter wants to see how you reason, not to trap your memory. Admitting a limit, then proposing how you would fill the gap, is judged positively.

Illustrative example: an internship on how a material holds up

Imagine, by way of illustration, a second-year student hosted for ten weeks in a testing department. The question posed by the supervisor: why do two batches of the same metal part not withstand fatigue in the same way?

• Weeks 1 to 2: reading existing reports, visiting the test facilities, confirming the scope with the supervisor.
• Weeks 3 to 6: preparing a series of samples, recording the measurement conditions, first tests.
• Weeks 7 to 9: analysing deviations, discussing hypotheses, identifying missing measurements.
• Week 10: written and oral presentation, with a clear distinction between what is measured, what is estimated and what remains to be checked.

The student does not claim to solve the problem. They deliver a clear approach, clean data and ranked avenues, which is a realistic contribution at this level.

During the assignment: framing, follow-up and reporting

Set up a regular meeting with the supervisor in the first week, however short. Write down the decisions taken and the reasons for them: this notebook will make the report easier and protect your memory of the details.

The school’s academic tutor follows your experience. Warn them early if the assignment drifts, if the topic changes or if supervision is lacking; a difficulty flagged at the halfway point can be fixed, while the same discovery at the final presentation largely cannot.

For the presentation, think of a reader who was not there: context in a few lines, question, method, results, limits, possible next steps. Attach the hypotheses and the data sources, because an engineer’s conclusion is only as good as what supports it.

Common mistakes and how to avoid them

• Accepting a topic that is too broad: ask in writing for the deliverables expected at the end of the internship.
• Waiting until the last minute: the best topics go early, and the agreement takes time to circulate.
• Neglecting the international side: the stay abroad required by the course has to be prepared months ahead, particularly for visas and insurance.
• Confusing tasks with an assignment: a succession of small requests does not make a defensible project.
• Keeping quiet about a disagreement: it is better to propose a reasoned alternative than to put up with a technical choice you consider fragile.

Finally, check the precise conditions for your year group with the registrar’s office, because the study regulations may change from one year to the next.