Flex

API Integration Developer Intern

InternshipWork from HomePune, Maharashtra6 months23K/mo15 openingsImmediate / Rolling

About this internship

Start your career in API development and third-party integration with Flex as an API Integration Developer Intern in Pune. You will sit with a working team, use the same tools and systems they do, and own a defined piece of work from day one. About the role As an API Integration Developer Intern…

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Skills you'll use

REST APIsJSON & XMLPostmanOAuth 2.0 & API KeysWebhooksNode.js or JavaAPI Documentation (Swagger)Error Handling & RetriesGitSQL

What you'll do

Work on connecting systems that were never designed to talk to each other, and keeping the contract stable alongside the core team
Apply REST APIs, JSON & XML, Postman, OAuth 2.0 & API Keys 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), BCA/MCA or B.Sc (Computer Science / IT)
Graduating batch 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 REST APIs, JSON & XML, Postman (or a genuine willingness to learn them)
Exposure to OAuth 2.0 & API Keys, Webhooks, Node.js or Java 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 Pune, Maharashtra or willing to work from there for the internship period

Perks & benefits

Pre-Placement Offer (PPO) opportunityFlexible working hoursNetworking with senior professionalsInternship CertificateLetter of RecommendationStructured onboarding and a formal mentor at a large, established employer

Interview & selection process

3 rounds — typical selection flow for this role:

1Application screening & resume shortlisting by the talent team
2Online aptitude / domain assessment
3HR discussion — stipend, start date, expectations and offer

About Flex

Flex operates in the electronics manufacturing sector and has an active presence in Pune. 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…

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