Nitish Devadiga

Senior Software Engineer @ Refrens

Freelancer based in Mumbai, India

Featured Clients

My Works

Pinned

Self Project

Grihafy - AI powered Home Wellness

🏡 Grihafy: AI-Powered Vastu for Modern India Grihafy is a transformative webapp that democratizes the ancient wisdom of Vastu Shastra through the power of AI. Designed to bridge tradition with technology, Grihafy empowers users to analyze and optimize their living spaces for harmony, wellness, and intentional design—without the hefty price tag of traditional consultations. ✨ Key Highlights Instant Vastu Analysis**: Get personalized insights using AI—no more ₹35,000 consultations. Science Meets Tradition**: Combines Vastu principles with modern architecture, spatial psychology, and biophilic design. GenZ-Friendly Interface**: Accessible, intuitive, and mobile-ready for the digital generation. Mental Wellness Focus**: Promotes mindful living by aligning your home with natural forces. 💡 Mission To make Home Wellness accessible to every Indian household—reviving ancient practices not as rigid rules, but as flexible frameworks for better living. “When your surroundings are positive, your mindset follows—leading to more balance and peace in life.” — Nitish Devadiga, Founder of Grihafy 🔗 Explore Grihafy

Ongoing Project

Web Application AI Next.js

Pinned

Diacone Techtools

Static Website for Diacone Techtools

* Developed a static website for Diacone Techtools Company. * Tech Used: Next Js, Tailwind CSS, Vercel (Hosting), Google Analytics. * Fully Responsive and performant with a 100% Lighthouse score. * PWA capable. * Developed a logo for the brand. * Added SEO based on Google Search Guidelines and Schema.org Microdata.

November, 2023

Web Developer Full Stack Developer Frontend Developer Next.js

Pinned

Refrens

Website for Refrens

Senior Software Engineer May 2024 - Present - Working on integrating Gen AI features (LLMs, RAG, and Agentic workflows) into the product suite. - Leading Refrens Mobile App developments. - Solving a variety of technical debts efficiently with minimal refactors and disruptions to established workflows and infra. - Greatly improving security and reliability of the entire software stack. - Guiding and reviewing work of peers. - Techincal documentations. Product Engineer May 2022 - May 2024 • Worked on the Profile Systems, User Feed, Accounting, and Book-Keeping software. • Collaborating with the CTO and a great engineering team on developing Refrens' SaaS product. Pair Programming to work on feature integrations and urgent bug fixes. • Tech Stack: Feathers JS (Node), Next JS, Mobx, Storybooks, Strapi, Websockets, MongoDB, PostgreSQL, Neo4j, Fast API (Python), OpenAI, and much more. • Taking charge of creating POCs on possible highly valuable integrations such as LLMs for Chat Support and generating profile content for businesses. • Optimizing rendering, forms, page performance, user experience, and SEO. Highlight: Optimized our Line Items rendering in the massive Invoice Form to support up to 300+ items in a single Formik-based React form (All while maintaining real-time balance computation of totals and taxes as you type). • Integrated accounting features such as GSTR categorization, GSTR-1 reports in JSON and Excel, Reverse Charge Mechanism, Voucher Entries, etc. • Worked on Email Sending (one-time and recurring) through custom domains using Gmail API and OAuth. Complete with a fallback mechanism to send email using AWS ses in case of auth failures. • Using NextJs' internal functions by digging through their repo to render pages as per our needs to suit performance and SEO. • Documenting, Reviewing PRs and taking hiring interviews. • Worked on featuring profile systems and rankings for Hire Freelancer Pages. • Lots of debugging, going through documentation and using AI anywhere possible to help speed up dev time. • Many, many more features and product enhancements.

Ongoing Project

Web Developer Full Stack Developer Backend Developer Frontend Developer Next.js OpenAI Python MongoDb Accounting And Tax

CryptoXpress

Mobile App and Website for CryptoXpress

* In charge of developing the CryptoXpress Apps. Working and collaborating with the CTO to brainstorm, develop, integrate, and test new features for the app, server, and smart contracts. * Tech Stack I worked with: React Native, React, Next JS, Node JS (Koa), MobX, Solidity, Hardhat, Web3/Ethers JS, Docker. * Integrating Modulr Payments for EU/UK Customers to enable Fiat Deposits and Withdrawals. * Designing NFT Smart Contracts based on ERC1155 and ERC721. * Testing the smart contract for BEP20 token standard and Token Vesting for the company's XPRESS Token. Also integrating the Token Vesting contract in a frontend React DAPP for investors using web3 and metamask. * Creating user and app flows. * Designing database models, new routes/APIs and proxies in the backend using Node JS. * Using MobX for App State Management. * • Developing an NFT Marketplace on the BSC Network where users can sell or auction any asset they own as an NFT with ease. Integration of a Proxy Registry to hold approvals. * • Creating a custom Node JS based smart contract event indexing service which is used to log and update the backend database with events that occurred in the Marketplace and NFT contracts. * • Developing a frontend Next JS dapp for the NFT Marketplace along with a React Native mobile version. * • Integrating a Crypto Exchange through Binance Broker Program. * • Managing a centralized wallet (Binance) for the exchange, and allowing users to create multiple decentralized (on device) 'Payment' Wallets, which allows easy transfers to others and also allows NFT Transactions. * • Working extensively with Web3, and understanding the blockchain and smart contracts to develop the application with more clarity. * • Optimizing for performance by utilizing useCallback hooks, memos, and caching. * • Screening and interviewing new hires.

March, 2022

App Developer Software Engineer Blockchain Developer React Native Developer Web Developer

Services Offered

Website Development

I can develop state-of-the-art, performant and beautiful websites for your business. * Flexible pricing plans based on your needs. * Detailed requirement gathering and understanding of what your company stands for to ensure the best envisioning of your brand. * Optional SEO package and Analytics integration.

₹2,000OnwardsMultiple Price Plans

About Me

Full Stack & Mobile Engineer | Building Scalable SaaS with AI and Security

Senior Software Engineer with 4+ years of experience designing and delivering secure, scalable, and high-performance applications across web, mobile, and AI domains. Proven expertise in full-stack development (React, Next.js, Node.js, React Native), Generative AI integrations (LLMs, RAG, agentic workflows), and backend architecture with strong focus on security (XSS/CSRF mitigations, refresh-token strategies, API rate limiting).

Passionate about clean architecture, production-grade systems, and creative problem solving. Always curious, always shipping.

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