# Rohit OS — Rohit Wadhwa's portfolio
> Free browser games, devotional apps and Chrome extensions built by Rohit Wadhwa (Senior Software Architect, India). Everything runs in the browser at https://rohit-os.vercel.app — no installs, no ads.
## Games
- [GARUDĀSTRA — Unleash the Avatar](https://rohit-os.vercel.app/games/garudastra/): A journey in eight lands · eight demon lords · one dawn — play: https://garudastra.vercel.app
- [Indian Village Tycoon](https://rohit-os.vercel.app/games/indian-village-tycoon/): गाँव की खेती • FARM • SELL • EXPAND — play: https://indian-village-tycoon.vercel.app
- [Neon Serpent Arena](https://rohit-os.vercel.app/games/neon-serpent-arena/): Eat orbs. Dodge rivals. Rule the arena. — play: https://neon-serpent-arena-game.vercel.app
- [Word Bloom](https://rohit-os.vercel.app/games/word-bloom/): No timer. No pressure. Just relax. — play: https://word-bloom-three.vercel.app
- [Neon Hand Magic](https://rohit-os.vercel.app/games/neon-hand-magic/): Show your hands to the camera and play with super powers. — play: https://neon-hand-magic.vercel.app
- [Geeta Legends](https://rohit-os.vercel.app/games/geeta-legends/): Explore the timeless wisdom of the Bhagavad Gita through daily quotes and test your knowledge with our interactive quiz. — play: https://geeta-legends.vercel.app
- [Minesweeper](https://rohit-os.vercel.app/games/minesweeper/): The desktop classic — 9×9, 10 mines, first click is always safe. — plays inside Rohit OS
- [2048](https://rohit-os.vercel.app/games/2048/): Slide the tiles, join the numbers, reach 2048. — plays inside Rohit OS
## Side Projects
- [मन्दिर रेडियो · Mandir Radio](https://rohit-os.vercel.app/projects/mandir-radio/): Free, always-on Hindi bhajan radio over an animated SVG temple scene, with a real पंचांग and festival themes. — open: https://mandir-radio.vercel.app
- [Math Trainer](https://rohit-os.vercel.app/projects/math-trainer/): Free multiplication and division practice for kids (CBSE Class 4). One HTML file, no install, no backend. — open: https://math-trainer-kids.vercel.app
- [Geeta Quote Daily](https://rohit-os.vercel.app/projects/geeta-quote-daily/): A daily verse from the Bhagavad Gita, as a website and a Chrome new-tab extension. — open: https://geeta-quote-daily.vercel.app
- [Gratuity Calculator (India)](https://rohit-os.vercel.app/projects/gratuity-calculator-india/): Free, open-source gratuity calculator under the Payment of Gratuity Act, 1972. 100% client-side. — open: https://gratuity-calculator-india.vercel.app
## Extensions
- [GitRepoTools](https://rohit-os.vercel.app/extensions/git-repo-tools/): Adds one-click links on any GitHub repository to AI documentation, code-visualisation and web-IDE tools. — install: https://chromewebstore.google.com/detail/gitrepotools/jlhmngpldhnhigcjbbnldinemegmcooa
- [Incognito Tab Mover](https://rohit-os.vercel.app/extensions/incognito-tab-mover/): Moves tabs from an incognito window to the main window with a keystroke. — install: https://chromewebstore.google.com/detail/incognito-tab-mover/cmgfihmnalhhfdelihcckpmggokcihnh
- [TripleKey Tabs Navigator](https://rohit-os.vercel.app/extensions/triplekey-tabs-navigator/): Jump to your most-used tabs with customisable keyboard shortcuts. — install: https://chromewebstore.google.com/detail/triplekey-tabs-navigator/oaaldjnbaamolmkofeeibjeebllfkjfj
- [LinkedIn Post Studio](https://rohit-os.vercel.app/extensions/linkedin-post-studio/): Formatting tools, reusable templates and live preview inside the LinkedIn post editor. — install: https://chromewebstore.google.com/detail/linkedin-post-studio/lcdkgjcfpahnnkjkllicbfijiihdjgol
- [Geeta Quote Daily (new tab)](https://rohit-os.vercel.app/extensions/geeta-quote-daily-ext/): A Bhagavad Gita verse with artwork on every new tab. — install: https://chromewebstore.google.com/detail/geeta-quote-daily/mchnncpedilhkilmpcmoaokgmlglkfab
## Articles
- [Loop Engineering: Why Prompt Engineering Alone Won't Be Enough Anymore](https://www.linkedin.com/pulse/loop-engineering-why-prompt-alone-wont-enough-anymore-rohit-wadhwa-wulec): A year ago, most of us were obsessed with writing better prompts. We experimented with role prompting, chain-of-thought prompting, few-shot examples, and countless prompt templates.
- [LinkedIn Post Studio: A Free Chrome Extension I Built, Shelved for a Year, and Finally Shipped](https://www.linkedin.com/pulse/linkedin-post-studio-free-chrome-extension-i-built-shelved-wadhwa-cb2dc): The Problem Every LinkedIn Creator Knows If you write on LinkedIn, you know the pain. You want bold text, clean bullet points, visual separators — but LinkedIn's editor gives you.
- [JSON vs TOON: Designing Data for a World Where the Consumer Is a Model](https://www.linkedin.com/pulse/json-vs-toon-designing-data-world-where-consumer-model-rohit-wadhwa-whdec): Then you look at the logs and realize your LLM calls are mostly chewing on… JSON syntax.
- [Creating Tomorrow with Bots: Opening the Potential of Automation](https://www.linkedin.com/pulse/creating-tomorrow-bots-opening-potential-automation-rohit-wadhwa-mdywc): Introduction: Bots are no longer a trend but a necessity in today's fast-paced digital environment.
- [ClickOps to DevOps: How Q Developer is Redefining Infrastructure-as-Code in AWS](https://www.linkedin.com/pulse/clickops-devops-how-q-developer-redefining-aws-rohit-wadhwa-miz2c): In the fast-paced world of cloud management, there’s often a gap between those who click around in the AWS console to get things done (ClickOps) and those who prefer to automate everything with code
- [Enhancing Web Navigation with TripleKey Tabs Navigator: A Game-Changer for Productivity](https://www.linkedin.com/pulse/enhancing-web-navigation-triplekey-tabs-navigator-rohit-wadhwa-c7b9c): In the digital age, efficiency, and productivity are not just buzzwords but essential elements of success, especially for professionals who rely heavily on web browsing for their daily tasks.
- [Elevate Your Browsing Experience with Incognito Tab Mover](https://www.linkedin.com/pulse/elevate-your-browsing-experience-incognito-tab-mover-rohit-wadhwa-pdb4f): In the ever-evolving digital landscape, privacy and efficiency stand as pillars of a seamless online experience.
- [AI Series - Article 3: AI Companions: From Daily Chores to Creative Co-Conspirators](https://www.linkedin.com/pulse/ai-series-article-3-companions-from-daily-chores-creative-wadhwa-wccef): Series Title: Journey Through the AI Wonderland: Unraveling the Magic and Mechanics Introduction: Greetings, fellow explorers of the digital cosmos!
- [AI Series - Article 2: The Artisans of Imagination: (DJ) DALL-E, Jukebox, and Beyond](https://www.linkedin.com/pulse/ai-series-article-2-artisans-imagination-dj-dall-e-jukebox-wadhwa-axwvf): Series Title: Journey Through the AI Wonderland: Unraveling the Magic and Mechanics Introduction: Greetings, fellow explorers of the digital cosmos!
- [Building It Right: SOLID Principles Simplified](https://www.linkedin.com/pulse/building-right-solid-principles-simplified-rohit-wadhwa-n6opf): Ever wondered how building software is like constructing a skyscraper? Both need a solid foundation, and that's where SOLID principles come into play in the coding world.
- [Choosing Your Tech Path: Monoliths vs Microservices](https://www.linkedin.com/pulse/choosing-your-tech-path-monoliths-vs-microservices-rohit-wadhwa-zlrtc): Hey everyone on LinkedIn, I've been thinking a lot about the crossroads in software design where we choose between monolithic and microservices architectures.
- [AI Series - Article 1: Navigating the Generative AI Landscape: ChatGPT, Bard, and Beyond](https://www.linkedin.com/pulse/navigating-generative-ai-landscape-chatgpt-bard-beyond-rohit-wadhwa-cewdc): Series Title: "Journey Through the AI Wonderland: Unraveling the Magic and Mechanics" Hello LinkedIn Family, As we sail through the ever-expanding ocean of generative AI, I've taken the helm to
- [Fortifying the Digital Frontier: My Journey into Zero Trust Cybersecurity](https://www.linkedin.com/pulse/fortifying-digital-frontier-my-journey-zero-trust-rohit-wadhwa-sgj8c): Hey LinkedIn community, In my latest tech adventure, I’ve been diving deep into the world of Zero Trust architecture. It's been a fascinating journey, reshaping how I think about cybersecurity.
- [The Power of Persistence: Why Consistency Matters in Shaping Your Success](https://www.linkedin.com/pulse/power-persistence-why-consistency-matters-shaping-your-rohit-wadhwa-j48ec): Something close to my heart and work life: being steady in what you do — being consistent.
- [Navigating Workplace Politics: Finding Peace and Focus in Chaos](https://www.linkedin.com/pulse/navigating-workplace-politics-finding-peace-focus-chaos-rohit-wadhwa-lcdnc): Something many of us face but often hesitate to discuss openly — workplace politics — from a developer's seat.
- [Bridging the Gap: Aligning Developer and Company Interests for Mutual Growth](https://www.linkedin.com/pulse/bridging-gap-aligning-developer-company-interests-mutual-rohit-wadhwa-zie5c): In the tech industry, a common narrative pits developers' interests against those of the companies they work for. Developers often seek opportunities for creativity.
- [Simplifying Cloud Infrastructure with Terraform: A Practical Guide](https://www.linkedin.com/pulse/simplifying-cloud-infrastructure-terraform-practical-guide-wadhwa-kzojc): Getting my hands dirty with Terraform lately, and it's been quite the adventure. For those wondering what Terraform is, this is the practical guide.
- [Embracing the Art of Living with "IKIGAI"](https://www.linkedin.com/pulse/embracing-art-living-ikigai--5z32c): Living a fulfilled and purposeful life is an art, and the Japanese concept of IKIGAI offers a beautiful blueprint for this.
- [Enhancing Conversational AI with the Top 5 Essential Plugins/GPTs](https://www.linkedin.com/pulse/enhancing-conversational-ai-top-5-essential--staoc): The emergence of artificial intelligence and machine learning technologies has transformed many fields, including conversational assistants.
- [Using Postgres with the pgvector Extension for Effective Vector Databases](https://www.linkedin.com/pulse/using-postgres-pgvector-extension-effective-vector--sktxc): Obtaining optimal and flexible vector databases has been a long-standing problem. Postgres with pgvector is one answer.
- [The Power of Small Actions in Work](https://www.linkedin.com/pulse/power-small-actions-work--uh1gc): In our everyday work, small delays and actions add up to significant impacts.
- [Explore the Latest Features of React](https://www.linkedin.com/pulse/explore-latest-features-react-rohit-wadhwa): React is a popular JavaScript library for building user interfaces, and it has recently released its 18th version with some exciting new features.
## Open Source
- [Update AmazonSNS.php](https://github.com/chrisbarr/AmazonSNS-PHP-API/pull/5): Added support for sending Amazon SNS messages in JSON format, so one publish action can carry a different message per protocol. — date: 2016-02-10
## Family & Friends
- [Solar Care Pro](https://rohit-os.vercel.app/friends/solar-care-pro/): Bilingual (EN/HI) site for a local solar washing, installation and maintenance business. — open: https://solarcarepro.vercel.app
## Work
- 2026 – Present · Senior Architect · SourceFuse · Agentic AI · Cloud — Designed a containerised agentic AI runtime on AWS Bedrock AgentCore, with multi-agent orchestration, retrieval (RAG) pipelines and MCP servers using secure, standards-based authorisation.
- 2025 – 2026 · Senior Architect · SourceFuse · Conversational AI · SaaS — Led architecture for a multi-channel conversational AI platform across web and messaging channels. Built on RASA OSS, it supports visual bot-building, contextual flows, live-agent handoff and WebSocket agent portals.
- 2024 – 2025 · Senior Architect · SourceFuse · Streaming · B2B SaaS — Architected a B2B SaaS streaming platform for live and on-demand content. Led a cloud migration and backend modernisation to serverless microservices, adding real-time social features and multi-device support.
- 2023 – 2024 · Senior Architect · SourceFuse · SaaS · MVP — Architected an MVP web application that brings several business functions into one product for small businesses, on a LoopBack microservices foundation with an Angular frontend and managed AWS infrastructure.
- 2023 · Senior Architect · SourceFuse · AI/ML · Regulated data — Led architecture for a document-summarisation application that uses AWS AI services to parse documents and extract entities with managed NLP.
- 2020 – 2023 · Architect → Senior Architect · SourceFuse · Data visualisation · Enterprise — Built an interactive analytics dashboard giving professional users transaction-level transparency across complex data sets, with configurable layouts and rich charts.
- 2020 – 2021 · Architect · SourceFuse · Web application — Contributed to a booking and coordination platform with real-time status tracking and dynamically generated PDF documents.
- 2019 · Architect · SourceFuse · Data analytics — Built a data-visualisation portal that renders large datasets as interactive charts, including heatmaps, violin plots and scatter GL, with filtering and export.
- 2019 – 2020 · Architect · SourceFuse · Progressive Web App — Architected a Progressive Web Application for planning multi-step pathways. It imports catalogue data, validates constraints and maps pathways to outcomes, and works fully offline.
- 2018 – 2019 · Architect · SourceFuse · SaaS · Enterprise — Built the frontend architecture for a SaaS records and case-management platform, with configurable workflows, forms and outcome tracking.
- 2018 · Architect · SourceFuse · Analytics — Built interactive analytics dashboards that bring third-party CRM and analytics data into unified views of engagement and performance metrics.
- 2008 – 2016 · Sr. Associate - IT · Daffodil Software · Web & mobile — Full-stack development across enterprise and consumer web and mobile applications. Progressed from PHP/LAMP to leading teams, introducing MVC and building web apps across LAMP, MEAN, MeteorJS and Drupal.
## Certifications
- [Agentic AI Readiness and Competence (AARC)](https://rohit-os.vercel.app/public/assets/certifications/aarc-agentic-ai-2026.jpg) — DeepLens.Tech, issued Sep 2026; tags: AI, Agents, Leadership. SourceFuse's Production-Grade AI Agents workshop, a company-run engineering enablement programme delivered by DeepLens.Tech. Two days, thirteen modules and five labs building agents in TypeScript on Mastra.AI with AWS Bedrock — MCP as the action layer, agent design patterns, advanced RAG, agent memory, tracing and cost, evaluation harnesses and an OWASP-for-Agents guardrail stack. Thirty engineers across seven teams. Led Nexus Team 2. Carries a Certificate of Completion and a Certificate of Appreciation for leading a Nexus team.
- [Introduction to Model Context Protocol](https://verify.skilljar.com/c/8nwse7usnncf) — Anthropic, issued Jun 2026; tags: Claude, MCP, Agents. Anthropic Academy course on the Model Context Protocol — servers, tools, resources and how Claude connects to external systems.
- [Introduction to Agent Skills](https://verify.skilljar.com/c/aidwvzxvty7m) — Anthropic, issued Jun 2026; tags: Claude, Agents. Anthropic Academy course on Agent Skills — packaging reusable instructions and tools that Claude agents load on demand.
- [Claude Code in Action](https://verify.skilljar.com/c/c5at6dqc3xeh) — Anthropic, issued Jun 2026; tags: Claude, Agents, Dev tools. Anthropic Academy course on Claude Code — agentic coding workflows, subagents, hooks and project configuration.
- [Building with the Claude API](https://verify.skilljar.com/c/g2h9s2s6ji68) — Anthropic, issued Jun 2026; tags: Claude, API. Anthropic Academy course on building with the Claude API — messages, tool use, streaming and prompt design.
- [Databricks AI Security Fundamentals](https://www.credential.net/0dbc8fb3-bd96-4743-a684-95da018874db) — Databricks, issued Jan 2026; tags: AI, Security, Databricks. Databricks Academy course on securing AI systems — threat models for LLM apps, data and model protection, and governance controls.
- [Databricks Certified Generative AI Engineer Associate](https://credentials.databricks.com/3f2bf344-307e-46c5-8ba2-57a19e53e934) — Databricks, issued Dec 2025, expires Dec 2027; tags: AI, Databricks, LLM. Databricks' professional exam on building production generative-AI applications: RAG pipelines, vector search, LLM chains, evaluation and governance on the Data Intelligence Platform.
- [Academy Accreditation - Generative AI Fundamentals](https://credentials.databricks.com/1fd27bbd-6eb8-4ab3-9d0a-482609e2f35c) — Databricks, issued Dec 2025, expires Dec 2026; tags: AI, Databricks. Academy accreditation covering the generative-AI landscape, LLM concepts and how Databricks tooling fits together.
- [Partner Training - Data Intelligence & Interoperability with SAP](https://credentials.databricks.com/fbaf31e9-e9ba-4165-8e83-79f6a2294091) — Databricks, issued Dec 2025, expires Dec 2027; tags: Databricks, Data, SAP. Partner training on data intelligence and interoperability between Databricks and SAP landscapes.
- [HIPAA Awareness for Business Associates](https://rohit-os.vercel.app/public/assets/certifications/hipaa-awareness.jpg) — HIPAA Training, issued Oct 2024, expires Oct 2026; tags: HIPAA, Compliance, Healthcare. Compliance training for business associates: HIPAA privacy and security rules, PHI handling, state laws (Texas HB 300, California CMIA).
- [Certificate of Attendance: AWS Innovate](https://rohit-os.vercel.app/public/assets/certifications/aws-innovate-2024.jpg) — Amazon Web Services (AWS), issued Sep 2024; tags: AWS, Cloud. Attendance at AWS Innovate (Migrate · Modernize · Build) — sessions on cloud migration and modernisation patterns.
- [Postman API Fundamentals Student Expert](https://api.badgr.io/public/assertions/VFJPg_L5To-1oeVQ1bobWw) — Canvas Credentials (Badgr), issued Jul 2024; tags: API, Postman. Postman's Student Expert badge: designing, testing and documenting REST APIs with collections, variables and test scripts.
- [Introduction to Generative AI](https://coursera.org/verify/2JKT7CPX6292) — Coursera (Google Cloud), issued Sep 2023; tags: AI, Google Cloud. Google Cloud's introductory course on generative AI — what it is, how large language models work and where they apply.
- [Understanding ChatGPT](https://www.datacamp.com/statement-of-accomplishment/course/7f9e69a78e1149febeec2c3d380070d018fc237a) — DataCamp, issued Sep 2023; tags: AI, ChatGPT. DataCamp short course on how ChatGPT works, prompt basics and practical business uses.
## Links
- [GitHub](https://github.com/rohit-wadhwa)
- [LinkedIn](https://www.linkedin.com/in/rohit-wadhwa/)
- [Newsletter on Medium](https://medium.com/@rohit.wadhwa52/weekly-newsletter-of-rohit-wadhwa-issue-1-163b29bf21fe)