EEcolab·Software Engineer

Ecolab Software Engineer interview experience

Got offer

Medium

Negative

PunePosted Feb 2026 · Candidate report, summarized by Dataford

After applying, I ended up doing two quick online assessments: one coding and one focused on aptitude along with communication skills.

The coding part had a handful of questions and felt on the easier side, and once I cleared that, the rest moved fast. Not long after, I joined a technical round where I was asked about CS fundamentals and then we shifted into questions tied to my projects, with the interviewer going a bit deeper into how I’d used concepts rather than just skimming the surface.

The technical conversation didn’t stay abstract for long. I remember covering core OOP ideas and data-structure type topics, plus database concepts like what I knew about SQL joins and how I’d approach practical problems. There was

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