William Blair — Working in Technology (WiT) Data Science - Summer 2027

Summer Internship · Data & ML

William Blair reference 5242280007

Status

Listed

Location

Chicago, Illinois, United States

Level

Internship

Deadline

Not published

Status checked against the firm's careers feed — last synced 13 October 2026.

Key details

Applications open: 28 September 2026
Deadline: Not published by the firm; treat the role as rolling and apply early.

Apply on William Blair's site

Are you eligible?

Check your year group

Summer Internship programmes are normally aimed at students in their penultimate year, which for the 2027 cycle means graduating in 2028.

When do you expect to graduate?

A year group is a convention, not a rule. The wording on the employer's own listing decides it.

How to prepare for this one

Internship processes at this level test fundamentals, structured problem-solving and whether you can explain your reasoning while you work.

Lev sits silently beside a finished puzzle marked solved. A speaking tube runs through a wall to the far side, marked what they heard, where a clipboard hangs with its sheet blank. — They score what comes through the wall. A silent answer arrives as a blank sheet.

Practise it, don't just read it

Free, no sign-up, and short enough to finish before you submit.

AI Product Sense Drill15 minThe AI product round has separated from the product round. Three products, fifteen decisions: what the model does unsupervised, how you would know it works, which failure is the expensive one.Market Sizing Drill10 minNobody in the room knows the answer. Build the chain of factors under a clock, then put it next to a reference chain and find the term that carried your error.

Tracking history

First seen: 13 October 2026
On the tracker: First seen today
Last checked: 13 October 2026

Dates describe when we observed the listing on William Blair's careers feed, not when the firm opened applications. Always confirm against the firm's own page before you rely on a date.

Also open in Data & ML

Every open role on the tracker across all verticals and regions.

More tracked roles at William Blair

Full William Blair intelligence page — every tracked programme, plus interview reports.

Get told when roles like this open

The day applications open matters more than the deadline printed next to it, and the opening date is the one employers publish late or not at all. Leave your email and we will tell you when the roles you care about go live.

One email when a role opens, plus a short weekly round-up in season. Free, and you can leave at any point.

Before you send it

William Blair screens on the document, not the intention. Suro reads your CV the way the screener will and writes back in the margin: structure, whether the bullets carry evidence, and whether it survives the parser. Back within 48 hours.

CV review, $25

Send this to someone applying 📌

𝕏 in 💬🤖

Instagram and TikTok have no desktop share link, so copy the caption and paste it into the app.

Seen something different on William Blair's own pages?

Dates move and stages change mid-cycle. If this page is wrong, the fastest way to fix it is to tell us what you saw.