Innovamat is an educational organization focused on mathematics learning. Our mission is to improve the way the subject is taught, by offering resources, training and research to the educational community. Since we were founded in Barcelona in 2017, we have partnered with more than 27,000 teachers in over 2,800 schools across nine countries, reaching more than 600,000 students.
Within Innovamat, Mathboard AI is the technology that reads what students write by hand. When a student solves a problem on a digital board, we receive the pen strokes themselves — not a photograph, not typed text. Our models have to work out which strokes belong together and what each group means, so the student can be understood and helped in the moment.
We are looking for the person who takes those models further. It is a multiple-instance detection problem on handwritten input, solved directly on the pen strokes rather than on a rendered image — a formulation with no off-the-shelf solution to copy and no public benchmark that stands in for the real thing. The work is genuine research engineering:



understand where the model falls short, form a hypothesis about why, build it, and find out honestly whether it worked.
The problem you would be working on
A student fills a page. On it there might be four separate calculations, two arrows linking one result to the next, a small diagram, a crossed-out attempt, and a few marks that belong to nothing at all. The model has to find every one of those objects, say what kind each is, and say exactly which pen strokes make it up — all at once, with no fixed number of objects and no guarantee that any two pages look alike.
So it is multiple-instance detection, but the primitives are strokes rather than pixels. One object is made of a variable number of strokes; strokes cross and interleave; two different objects routinely occupy the same region of the page, so the question is never where an object roughly is but which specific marks constitute it. And a

📌 Senior Computer Vision Engineer (España)
🏢 Innovamat
📍 España