Kitchener, Ontario, CanadaOpen to hybrid/remote roles across Canada

Nikhil Gaikwad

Senior Full Stack Developer

React 18 · TypeScript · Spring Boot · AI/LLM Integration

8+ years building secure, scalable enterprise health platforms used by thousands of health workers across WHO-endorsed programs - now shipping AI-powered features and offline-first apps.

View Resume Get in Touch

01 / About

Product-minded engineering, production-grade systems

I'm a full stack developer with 8+ years of experience across backend systems, healthcare platforms, and AI-powered workflows - spanning Java/Spring Boot, React, Vue.js, and Node.js. I've delivered end-to-end LMS platforms, AI-assisted analytics tools with LLM integration, and enterprise CMS and payment platforms, translating ambiguous requirements into production-grade systems. I'm known for product-minded engineering that bridges user needs with robust architecture, and for mentoring engineers while leading cross-functional delivery across the full SDLC. At Dure Technologies, I led development on WHO-endorsed health information platforms deployed across Ethiopia, Tanzania, and Pakistan, serving 10,000+ health workers.

Years experience: 8+
Health workers served: 10k+
Country deployments: 15+

02 / Experience

What I've shipped

Most recent first. Healthcare platforms, LMS delivery, and production Java at scale.

Software Developer
Lotus STEMM
Jan 2026 – May 2026Ontario, Canada (Remote)
- Independently architected and delivered a custom Learning Management System (LMS) end-to-end
- Built the React 18 frontend with React Router v6, CSS animations, and Lottie for vector animations
- Integrated Firebase JS SDK v10 (Auth + Firestore) for real-time backend, progress tracking, and offline-resilient state via localStorage
- Embedded H5P Standalone interactive content and native browser APIs (video modals, localStorage)
- Deployed on Vercel with full CI/CD - branch previews, zero-downtime releases
Senior Software Engineer
Dure Technologies Pvt. Ltd.
Apr 2019 – PresentIndia (Remote, Geneva HQ)
- Designed and maintained scalable Java/Spring Boot microservices for WHO-endorsed national health programs serving 10,000+ users across multiple countries
- Built Prevent TB Smart Setup for WHO: national coordinators configure registration, service delivery, alerts, historic index-case data, contact evaluation, and health-facility user management
- Built CoWIN SafeVac, India's COVID vaccine self side-effect reporting portal for beneficiaries, hosted on CoWIN (MoHFW)
- Architected the open-source T1D Registry (Smart Setup, RBAC admin/org management, data-entry web app) now adopted by multiple countries
- Built GraphQL APIs and RESTful services; used Java Streams & Lambdas for server-side data transformation, cutting API call overhead by 28% via caching
- Engineered thread-safe backend modules using concurrency utilities (ExecutorService, CompletableFuture)
- Applied SOLID principles and design patterns (Observer, Singleton, Factory, Strategy, MVC) in sub-system architecture and authored technical design docs
- Diagnosed and resolved JVM memory leaks, thread contention, and collection misuse - cutting load times from 6–8s to 2–3s on low-bandwidth field devices
- Built an AI Assistance Modal (LLaMA 2 / Ollama + React 18 + Python), reducing data-entry time by 35%
- Built an offline-first DHIS2 Tracker data-entry app (React 18, TypeScript, PouchDB + CouchDB sync)
- Led cross-functional Agile delivery across the SDLC, mentored engineers, led teams of 10+, accelerated release cycles by 20%
- Also shipped: Node.js CMS + Stripe payment platform with RBAC, Vue.js dashboards, React Native/Cordova offline mobile apps, Angular enterprise dashboards
Software Specialist
eClinicalWorks
Oct 2016 – Jan 2019Remote
- Diagnosed and resolved Core Java production defects in large-scale EHR systems - multithreading race conditions, memory leaks, NullPointerException chains - under live production constraints

03 / Projects

Selected work

WHO and national health platforms, AI tools, and full-stack systems I designed and shipped. Expand a card for the details.

WHO Prevent TB - Smart Setup

WHO-listed digital platform that lets national TB programmes configure registration, service delivery, and local alerts - then publish the app for their own country context.

Java
Spring Boot
React
DHIS2

View on WHO

CoWIN SafeVac

India's COVID-era self side-effect reporting portal - beneficiaries report vaccine adverse events, hosted on the national CoWIN platform.

Java
Spring Boot
Angular

View SafeVac

T1D Registry

Open-source Type 1 Diabetes platform, architected end-to-end and adopted by multiple countries - Smart Setup, RBAC admin, and a data-entry web app.

Java
Spring Boot
React
DHIS2

View T1D Registry

AI-Powered DHIS2 Assistant

Natural-language analytics assistant that turns plain-English questions into DHIS2 queries, trend summaries, and downloadable reports.

Java
Spring Boot
GraphQL
WebFlux
Python
React
Docker

Offline-First DHIS2 Tracker App

Custom data-entry app for field health workers that keeps working with zero connectivity and syncs when the network returns.

React 18
TypeScript
PouchDB
CouchDB

Custom LMS Platform (Lotus STEMM)

Sole developer, end-to-end: learning platform with auth, interactive content, video, and progress tracking.

React 18
React Router v6
Firebase v10
Vercel

Secure Inventory & Encryption Microservice

AES-encrypted inventory service with RBAC, Spring Security, and a React admin UI.

Java
Spring Boot
Spring Security
PostgreSQL
React

Enterprise CMS & Payment Platform

Full-stack Node.js platform: customizable CMS, Stripe payments, certificates, and JWT + RBAC.

Node.js
Stripe
JWT

Interactive Analytics Dashboards

Cross-framework dashboards for geospatial visualization and reporting across React and Vue.js.

React
Vue.js
Highcharts
D3.js
Leaflet

04 / Custom

Custom projects

Side projects I built independently - including TrackSpree, a cross-platform expense tracker.

TrackSpree

Cross-platform monthly expense tracker I built solo - Expo (React Native + TypeScript) and Firebase, on iOS via Expo Go and on the web via Vercel.

Expo
React Native
TypeScript
Expo Router
Firebase Auth
Firestore
Zustand
Vercel

View TrackSpree

05 / Skills

Technical skills

Grouped by how I actually use them - not a tag cloud.

Languages

Java (8/11/17)
TypeScript
JavaScript (ES6+)
Python

Backend

Spring Boot
Spring Security
Spring Data JPA/Hibernate
GraphQL
Node.js
WebFlux

Frontend

React 18
React Router v6
React Native
Expo
Expo Router
Zustand
React Hook Form
Zod
Vue.js
Angular
Apache Cordova

Data Viz

Highcharts
D3.js
Leaflet
Gifted Charts

Databases

PostgreSQL
MySQL
Firebase Auth
Firebase Firestore
PouchDB

Cloud / DevOps

Azure
Docker
Jenkins
GitHub Actions
Maven
Vercel

Integrations

Stripe
LLaMA 2/Ollama
H5P Standalone
Lottie

Testing

JUnit 5
Mockito
Jest
React Testing Library

Practices

Microservices
REST & GraphQL API design
SOLID
Design Patterns
RBAC
JWT
Agile/Scrum

06 / Contact

Get in touch

Open to Full Stack Java Developer, React Developer, and Senior Software Engineer roles - hybrid or remote, Ontario / Canada-wide

Kitchener, Ontario, Canada