Kastle

MongoDB Internship

InternshipHybridThane, Maharashtra6 months20K/mo6 openingsImmediate / Rolling

About this internship

Join Kastle in Thane as a MongoDB Internship. This entry-level internship is designed for students and recent graduates who learn best by building, shipping and getting real feedback on NoSQL data engineering with MongoDB work. About the role As a MongoDB Internship at Kastle, your core focus will…

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Skills you'll use

MongoDBNoSQL DesignAggregation PipelineIndexingSchema ModellingNode.js or PythonReplication BasicsQuery TuningBackup & RestoreGit

What you'll do

Work on designing documents around how they are read, rather than normalising out of habit alongside the core team
Apply MongoDB, NoSQL Design, Aggregation Pipeline, Indexing to live, production-facing problems
Document your work clearly for reviewers and stakeholders
Participate in reviews and act on the feedback you receive
Collaborate across engineering, product, design or business as required
Follow the team's quality, testing and documentation standards

Who can apply

Pursuing or recently completed B.E./B.Tech (CSE/IT/ECE), BCA/MCA or B.Sc/M.Sc (Computer Science / IT)
Graduating batch 2025, 2026 or 2027 — final-year students and recent graduates welcome
60% / 6.0 CGPA and above preferred; strong project work is considered alongside academics
Working knowledge of MongoDB, NoSQL Design, Aggregation Pipeline (or a genuine willingness to learn them)
Exposure to Indexing, Schema Modelling, Node.js or Python is an advantage
Clear written and verbal communication in English, and care with detail in your work
No prior work experience required — this is a fresher-friendly internship
Based in Thane, Maharashtra or willing to work from there for the internship period

Perks & benefits

Mentorship from a named mentorLive project experienceExposure to professional tools and workflowsPre-Placement Offer (PPO) opportunityFlexible working hoursBroad ownership and direct exposure to founders and senior decision-makers

Interview & selection process

4 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Technical interview on fundamentals and your projects
3Practical assignment or case study with a short walkthrough
4HR discussion — stipend, start date, expectations and offer

About Kastle

Kastle operates in the ai fintech sector and has an active presence in Thane. Interns here are put on real work from the start, because the team's view is that the fastest way to learn a craft is to practise it under people who already do it well — not to watch it from a distance. The work runs at…

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