Which companies are hiring for Summer 2027 C# co-op and internships in Newmarket, ON?

Celestica has open listings on this page.

When do applications open for Summer 2027?

Big programs open applications around August-November 2026; healthcare, media, and startups keep posting into spring 2027. Roles start May-June 2027.

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Summer 2027 C# co-op and internships in Newmarket, ON

Q: Are Summer 2027 C# co-op and internships in Newmarket, ON paid?

2 of 2 listings on this page state that the role is paid. The rest do not state pay in the fields we use, and this page does not assume they are unpaid.

As of November 14, 2026, Intern Insider listed 2 open Summer 2027 internships in Newmarket that mention C#, at Celestica. 2 of these 2 listings state that the role is paid. This page does not invent a salary when the listing is silent. Browse the roles by employer below. You can read the full posting free, then apply in minutes with a free account.

2 open roles · 1 company · 1 added this week

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Celestica2 open

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As of November 14, 2026, Intern Insider listed 2 open Summer 2027 internships in Newmarket that mention C#, from 1 companies.

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