What is your primary technology stack?

My core production stack is Next.js 15, React 19, TypeScript, Node.js, and PostgreSQL, backed by AWS infrastructure (Lambda, SQS FIFO, S3, RDS) and Docker containerization.

Do you work with existing codebases or only new projects?

Both. I regularly help teams refactor existing production systems (resolving database bottlenecks, reducing frontend latency, or adding critical features) as well as architecting 0-to-1 greenfield products.

How do code handoffs and IP ownership work?

You own 100% of all intellectual property, source code, and design assets from day one. Everything is pushed directly to your organization's GitHub repositories with automated CI/CD documentation.

What timezones and communication channels do you use?

I am based in Ontario, Canada (Eastern Standard Time, EST). I collaborate smoothly with teams across North America and Europe using Slack, Discord, Linear, Loom, and Zoom.

AVAILABLE FOR SELECT CONTRACTS|Ontario, Canada

Modern full-stack web apps, built from pixel to database.

Q: How quickly can we start working together?

Depending on current sprint allocations, I can typically kick off scoping and architecture blueprints within 3 to 5 business days following an initial discovery call.

Hi, I'm Jimish Gajjar — Senior Full-Stack Developer with 5+ years of production experience in React, Node.js, and PostgreSQL. Creator of Vantly Health (HIPAA SaaS) and TrySpeed ($2M+/day payout engine). Direct senior collaboration with zero junior handoffs.

Book Discovery Call

Download ResumePDF Explore Work

Sub-35ms SLA

Fast API Response

100% Type-Safe

Strict TypeScript & Zod

99.99% Uptime

Production SLA

100% IP Transfer

Direct Code Ownership

https://vantlyhealth.jimishgajjar.com

Live Production SaaS

Healthcare SaaS · HIPAA Compliant

Vantly Health

All-in-one care management and family communication platform built for nursing homes and assisted living facilities.

● The Bottleneck

Care facility staff spent hours every day fielding repetitive family phone calls, using fragmented non-compliant paper records.

● Engineering Solution

Architected a multi-tenant SaaS with 4-tier role-based access, automated family event alerts, real-time vitals tracking, and HIPAA audit trails.

Next.js 15React 19TypeScriptTailwind CSSPostgreSQLPrisma

Visit Live Website Read Architecture Case Study

PRODUCTION BENCHMARKSVERIFIED

-65%

Family Callbacks

100%

HIPAA Compliance

4 Tiers

Role Portals

< 30 Mins

Setup Time

Full IP Transfer & Zero Tech Debt

CORE FULL-STACK DEVELOPMENT TECHNOLOGIES & TOOLS

React 19

Next.js 15

TypeScript

Node.js

PostgreSQL

Tailwind CSS

SERVICES & EXPERTISE

What I actually engineer...

Modern architecture engineered for velocity, uptime, and real product revenue. No agency fluff, just resilient code built to scale.

FRONTEND & SAAS PLATFORMS

Full-Stack Web & SaaS Platforms

Modern Next.js 15, React 19, and TypeScript web applications engineered with precision design, strict type-safety, and sub-100ms response times.

Multi-tenant SaaS platforms (like Vantly Health)
Next.js 15 App Router with SSR & Server Actions
Design systems with Tailwind CSS & Framer Motion

JGVHTS

Active in Production

Explore Architecture Blueprint

APIS & DISTRIBUTED SYSTEMS

High-Throughput Backends & APIs

Distributed microservices, Node.js and Python runtimes, PostgreSQL architectures, Redis caches, and event-driven queues built to scale.

Sub-50ms P99 execution under surge traffic
PostgreSQL connection pooling, RLS, and tuning
Event-driven SQS FIFO queue architectures

Node.jsPostgreSQLRedisDocker

Explore Architecture Blueprint

CLOUD & RELIABILITY

Cloud Infrastructure & DevOps

Containerized Docker deployments, AWS serverless stacks, automated CI/CD pipelines, and multi-region resilience for zero-downtime reliability.

Auto-scaling AWS Lambda & S3 pipelines
Zero-downtime GitHub Actions CI/CD workflows
HIPAA & SOC2 security audit compliance

AWS Auto-Scale Active

99.99% SLA

Explore Architecture Blueprint

Have a custom system architecture in mind? Let's discuss your scope

DIRECT SENIOR PARTNERSHIP

Why founders and CTOs choose to partner with me

Direct senior engineer access. No junior handoffs, no bloated agency retainers, and relentless focus on product execution.

End-to-End Architecture Ownership

From relational schema blueprints and API contracts to automated CI/CD and production monitoring. I take total accountability for the system's stability, security, and performance.

Velocity Without Long-Term Tech Debt

Clean, modular TypeScript with strict type boundaries and automated unit/integration test suites. When your in-house team grows, onboarding into the codebase takes hours, not weeks.

Direct Partner Communication & Transparency

Daily async Slack updates, Loom demo recordings for each sprint milestone, and weekly architectural syncs. You always know what is deployed, tested, and shipped.

JGARCHITECT

Jimish Gajjar

Senior Full-Stack Architect & Cloud Lead

Ontario, Canada · 5+ Years Production Experience

Flagship SaaS:Vantly Health (HIPAA)

FinTech Engine:TrySpeed ($2M+/Day)

Pathology System:LIMS (10K+ Tests/Day)

Available for Select Q2/Q3 Contracts

Schedule 30-Min Discovery Call

SPRINT DELIVERY PROCESS

Engineered for velocity.

Predictable, sprint-based results.

Schedule a Discovery Call

System Design & Schemas

Architecture & Scope

Deconstructing your product vision into type-safe relational schemas, clean API boundaries, and a hardened cloud architecture plan before writing a line of code.

Deliverables:

Relational Database ERDs

Type-Safe API Contracts

Infrastructure Blueprint

Bi-Weekly Production Shipments

Rapid Sprint Build

High-velocity development using modern React 19, Next.js, and TypeScript. Frequent staging previews, automated tests, and Loom walkthroughs for total transparency.

Deliverables:

Live Staging Previews

Automated CI Test Suites

Async Sprint Demos

Zero-Downtime Launch & Telemetry

Deploy & Scale

Production deployment on AWS or Vercel with automated CI/CD pipelines, error tracing, and performance monitoring configured to handle heavy user traffic.

Deliverables:

Zero-Downtime CI/CD

Real-Time Telemetry Logs

Complete Code Handover

Flagship Engineering Dossiers

Featured Case Studies & Work

Explore production architectures. Scroll to experience each system dossier as pages stack dynamically with live telemetry and engineering breakthroughs.

View All 20+ Projects

PAGE 01 / 04

|Healthcare SaaS · HIPAA Compliant

https://vantlyhealth.jimishgajjar.com

Live Production SaaS

Vantly Health

All-in-one care management and family communication platform built for nursing homes and assisted living facilities.

Bottleneck: Care facility staff spent hours every day fielding repetitive family phone calls, using fragmented non-compliant paper records.

Engineering Fix: Architected a multi-tenant SaaS with 4-tier role-based access, automated family event alerts, real-time vitals tracking, and HIPAA audit trails.

-65%

Family Callbacks

Automated alert stream

HIPAA

Security Standard

Audit trails active

142

Active Residents

Maple Grove Center

< 30m

Setup Time

Self-serve onboarding

Next.js 15TypeScriptTailwind CSSPostgreSQLPrismatRPCVercel

Visit Live Website Read Architecture Dossier

https://vantlyhealth.jimishgajjar.com

Maple Grove Senior Living

Care Coordination Hub · Staff On Duty

HIPAA Verified

Margaret ChenRoom 204

Vitals Stable

BP: 120/78

Heart: 72 bpm

SpO2: 99%

Automated Family Sync: Active (0 Callbacks)

100% Realtime

PAGE 02 / 04

|FinTech · High-Frequency Crypto Infrastructure

https://tryspeed.com/engine

$2M+ Daily Volume

TrySpeed Platform

High-throughput cryptocurrency payout and treasury platform handling rapid micro-transactions with sub-second finality.

Bottleneck: Sudden volatility spikes caused transaction nonce collisions, stuck wallet transfers, and expensive Ethereum gas wastage.

Engineering Fix: Engineered an event-driven AWS SQS FIFO queue buffer paired with auto-scaling serverless Lambda workers and sub-50ms WebSocket telemetry.

$2M+

Daily Volume

USD Micro-transfers

48ms

P99 Execution

Sub-second finality

1.2k/s

Throughput

AWS SQS FIFO buffer

99.99%

Uptime SLA

Multi-region fallback

React 19Next.jsTypeScriptAWS LambdaSQS FIFODynamoDBWebSockets

Read Architecture Dossier

https://tryspeed.com/engine

TrySpeed Execution Engine

AWS SQS FIFO Buffer · Multi-Chain Treasury

48ms P99

USDC 4,500.00→ 0x8f...21a

Finalized · 38ms

ETH 14.20→ 0x3b...77d

Finalized · 42ms

Ingestion: 1,240 tx/s · Queue Depth: 0 DropsFIFO Clean

PAGE 03 / 04

|MedTech Infrastructure · Diagnostic Pathology

https://lims.clinical-labs.net

10,000+ Tests/Day

LIMS Workstation

Clinical laboratory information management system automating high-throughput pathology diagnostic workflows.

Bottleneck: Manual specimen intake and paper logging created severe diagnostic backlogs and elevated risks of human data entry errors.

Engineering Fix: Built a real-time reactive workstation with barcode ingestion, automated state-machine validation, and bidirectional lab analyzer streaming.

10K+

Daily Tests

Specimens processed

-35%

Turnaround Time

Automated validation

< 0.01%

Error Rate

Barcode verification

ISO 15189

Compliance

Clinical standard

ReactRedux ToolkitNode.jsWebSocketsMongoDBDockerJest

Read Architecture Dossier

https://lims.clinical-labs.net

Diagnostic Pathology Terminal

Specimen Ingestion & Anomaly Validation

ISO 15189

Sample ID: S-88219Clearance Approved

Barcode: [||||||||||||||] · Hematology Panel · Verified

8 Analyzers Connected · Model Confidence: 0.994-35% Speedup

PAGE 04 / 04

|AI E-Commerce · Predictive Personalization

https://shopsphere.ai

Production AI Platform

ShopSphere AI

Modern e-commerce platform powered by vector search, real-time personalized recommendations, and automated checkout.

Bottleneck: Traditional keyword search failed to convert customers searching with natural language and nuanced product intent.

Engineering Fix: Implemented a vector embedding search pipeline with instant semantic matching, dynamic catalog reranking, and sub-100ms response times.

+40%

Cart Conversion

AI search intent

< 95ms

Search Latency

Vector embeddings

50K+

Catalog Scale

SKUs indexed

2.4x

Rec Lift

Dynamic reranking

Next.jsTypeScriptPythonTailwind CSSPostgreSQLStripe

Read Architecture Dossier

https://shopsphere.ai

Vector Search E-Commerce Engine

Embeddings Rerank · Real-Time Conversion

Sub-95ms

Semantic Search Query:

"minimalist noise-cancelling travel headphones"

Vector Match: 99.2% Relevance · 50,000 SKUs Scanned

Recommendation Lift: 2.4x · Checkout Time: Instant+40% Orders

VERIFIED RECOMMENDATIONS

What engineering leaders & teams say

Real feedback from technical leads and CTOs across delivered production platforms.

Vantly Health · HIPAA SaaS

"Jimish is one of those rare developers who understands both complex distributed code and strict healthcare compliance requirements. He delivered our core patient portal modules two weeks ahead of schedule with zero production regressions."

Sarah Jenkins

Technical Lead · HealthTech Solutions

TrySpeed Platform · $2M+/Day

"The high-throughput refactoring work Jimish implemented on our transaction pipelines dropped infrastructure costs by 30% and brought webhook execution latency down to under 50ms. Truly clean, performant engineering."

Marcus Chen

Senior Backend Architect · FinTech Scaleup

100%

On-Time Delivery Rate

5+ Years

Production Experience

< 24h

Average Response Time

Ontario, Canada

Canada & Global Remote

ARCHITECTURE ARSENAL

The modern tech stack powering your product

Battle-tested frameworks, typed contracts, relational databases, and cloud primitives engineered for high scale and zero downtime.

Frontend & Interfaces6 Tools

React 19Next.jsTypeScriptTailwind CSSFramer MotionZustand

Production Tested & Validated

Backend & Concurrency7 Tools

Node.jsPythonPostgreSQLRedisPrismaGraphQLWebSockets

Production Tested & Validated

Cloud & Infrastructure7 Tools

AWS CloudAWS LambdaDockerSupabaseStripeJestCypress

Production Tested & Validated

Explore Complete 35+ Technology Stack & Live Search

PRODUCTION UI & DESIGN PRECISION

Crafted interfaces & precision UI

Clean data visualizations, high-conversion flows, and accessible design systems engineered for complex enterprise domains.

Vantly Health · Healthcare SaaS0 Callbacks · 100% Realtime

Real-Time Patient Vitals Monitor

Sub-second biometric ingestion streaming blood pressure, heart rate, and oxygen saturation.

View Architecture DossierTypeScript / React 19

TrySpeed Platform · FinTech Infrastructure48ms P99 · $2M+/Day

Sub-Second Crypto Payout Engine

AWS SQS FIFO buffer guaranteeing sequential multi-chain payouts with zero nonce collisions.

View Architecture DossierTypeScript / React 19

LIMS Workstation · Diagnostic MedTech10K+ Daily Tests · ISO 15189

Pathology Analyzer Diagnostic Stream

Bidirectional laboratory instrument streaming with automated barcode anomaly detection.

View Architecture DossierTypeScript / React 19

ShopSphere AI · AI E-Commerce<95ms Latency · +40% Conv

Semantic Vector Search Reranker

High-dimensional embeddings matcher converting natural language intent to instant checkouts.

View Architecture DossierTypeScript / React 19

TRANSPARENT COLLABORATION

Flexible ways to partner and build

Transparent, milestone-based engineering tailored to your team's velocity. No junior handoffs, no bloated retainers.

1 - 2 Weeks Sprints

Sprint Acceleration

Quick strike MVP, performance audit, or mission-critical feature release.

Targeted feature build or performance refactoring

Core Web Vitals & database slow query audit

Full TypeScript type-safety & contract review

Direct async Slack access & daily progress updates

Zero long-term commitment required

Book a Sprint

4 - 8 Weeks DeliveryMost Common

Full-Stack Product Build

End-to-end architecture, development, testing, and production launch.

Complete 0-to-1 web app or SaaS engineering

Next.js 15, React 19, and PostgreSQL database

Automated CI/CD pipelines & AWS cloud infrastructure

HIPAA or FinTech-grade security & audit trails

Full intellectual property & source code handover

Build Your Product

Ongoing Monthly Retainer

Fractional Tech Lead

Senior architectural advisory, code reviews, and high-scale technical roadmapping.

System design reviews & architecture decision records (ADRs)

Technical hiring assistance & developer interviews

Infrastructure cost optimization & AWS tuning

Priority advisory channel for engineering bottlenecks

Flexible hours tailored to founder schedules

Retain Advisory

THE ARCHITECT ADVANTAGE

Senior Architect vs Traditional Solutions

Why high-growth startups, founders, and CTOs prefer working directly with an experienced engineering partner.

Criteria	Traditional Agency	Budget Freelancer	Jimish Gajjar (Architect)
Direct Senior Engineering	Rare (Delegated to juniors)	Hit or miss experience	100% Direct Senior Architect
Code Quality & Type Safety	Bloated legacy boilerplate	Variable, often untyped	Strict TypeScript, Clean Architecture
Delivery Speed & Velocity	3-6 months bureaucracy	Unpredictable turnaround	Bi-Weekly Production Sprints
Communication & Demos	Layered account managers	Sporadic messaging	Direct Slack & Loom Demos
Cloud Scale & Compliance	Expensive add-on retainers	Basic VPS hosting	AWS Serverless, HIPAA & FinTech

COMMON INQUIRIES

Got questions? I've got answers.

Everything you need to know about project onboarding, technical contracts, delivery milestones, and collaboration frameworks.

Have a different question? Let's talk

Depending on current sprint allocations, I can typically kick off scoping and architecture blueprints within 3 to 5 business days following an initial discovery call.

READY TO LAUNCH?

Ready to build high-scale software for your business?

Let's discuss your product goals, timeline, and technical architecture. Direct senior engineer access from day one.

Book Discovery Call Send a Direct Message

Direct Access · Available for Contracts & Product Sprints

Let's build something exceptional

Have a project in mind, an architectural challenge, or need senior full-stack development? Book a 30-minute discovery call or send a direct message below.

Jimish Gajjar

Senior Full-Stack Architect & Consultant

Ontario, Canada

Remote contracts across Canada & US

Typical response within 24 hours

Direct Inquiries

Phone

+1 (437) 766-4740

Professional Profiles

GitHub LinkedIn

Active Contract AvailabilityImmediate

Schedule a 30-Min Discovery Call

Choose a date & time for a Google Meet session

Discovery Session

30-Min Intro Call

30 minutes

Google Meet video

America/Toronto

Pick a date & time to instantly schedule a meeting directly on my calendar.

October 2026

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Available slots for Fri, Oct 2