Himanshu’s professional journey spans technical content writing, Flutter mobile development, API integration, and developer tooling. From his first internship building mobile features with Flutter and Firebase, through API fellowship programs exploring testing and backend tooling, to writing SEO-ranking documentation and blog content for a leading low-code platform — each role has added a new dimension to his craft as a developer and communicator.Documentation Index
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Technical Content Writer Intern — ToolJet
Oct 2024 – Jan 2025Wrote SEO-ranking technical content for ToolJet’s official documentation and developer blog. Produced 10+ in-depth articles covering ToolJet’s platform features, helping developers get up to speed with the product. Also maintains a personal blog covering broader engineering topics and personal reflections.Skills & Tools: Google Docs, Markdown, Research, SEO, Content Writing, User Experience
Writing Portfolio (Notion)
Browse all 10+ articles and blog posts written for ToolJet.
Flutter Developer Intern — Stardust IT Solutions
Sep 2023 – Nov 2023Built Tilted, a companion app for gamers that tracks game sessions and ranks players on a shared leaderboard with friends. Handled the full development lifecycle — from design collaboration in Figma to state management with GetX and REST API integration.Tech Stack: Flutter, Dart, Figma, REST APIs, Git, GetX State Management
API Fellowship / Keploy Ninja — Keploy
Jan 2023 – Mar 2023Participated in the Keploy API Fellowship program, diving deep into API testing tools, backend development patterns, and open-source contribution workflows. Wrote a detailed blog post about the experience — what was learned, the tools explored, and how the fellowship shaped a stronger understanding of developer tooling.Tech Stack: Node.js, Express.js, MongoDB, REST APIs, Git, Postman
My Experience with Keploy API Fellowship
Read the full write-up on Hashnode.
Flutter Developer Intern — First Impression Technologies
Nov 2021 – Feb 2022First professional role in software development. Built and shipped mobile app features using Flutter and Firebase, gaining hands-on experience with real-world mobile development workflows, Android Studio tooling, and cloud-backed application architecture.Tech Stack: Flutter, Dart, Java, Android Studio, Firebase
First Impression Technologies
Learn more about the company on LinkedIn.
Curious about what was built across these roles and beyond? Head over to the Projects page to explore apps, CLI tools, design work, and more.