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Shardul Kavar

Full-Stack Developer & Backend Architect

Hi, I’m Shardul. I specialize in engineering the critical infrastructure where finance meets technology.
With a proven track record of managing 25+ Payment Service Provider (PSP) integrations and navigating complex KYC/AML compliance pipelines, I bridge the gap between traditional Fiat banking and the future of Crypto assets. My expertise lies in transforming undocumented, legacy API environments into robust, scalable microservices that handle high-stakes transactions with precision.
Whether it's architecting a 300+ table database for national-scale platforms, or securing real-time payment flows, I focus on one goal: eliminating technical risk so your business can scale without borders.

Shardul Kavar - Full-Stack Developer & Backend Architect

About me

My primary tools of choice include:

Fintech & Security

Stripe Plaid JWT Razorpay Payment Gateway Integration Sumsub

System Architecture & Messaging

Microservices RabbitMQ ElasticSearch Socket.io

Data Persistence

PostgreSQL MongoDB Redis Supabase Firebase

DevOps & Cloud

AWS Docker GitHub Actions Nginx PM2

Languages & Frameworks

Node.js TypeScript JavaScript Express.js

My focus is on delivering systems that are robust, scalable, efficient, and easy to maintain.

Let's start working together!

Contact Details

shardulpatel010@gmail.com

Socials

Time zone IST (GMT+5:30)

Now

Currently open to new opportunities and collaborations.

Favourites:
Fintech / Claude Code / Third-party integrations / Production quality prototypes

Experience

Claude Code-Driven Development & Automation

Full-Stack Claude Code Innovator

  • Challenge: To architect and deliver complex, full-stack applications with unparalleled speed, security, and quality, surpassing industry benchmarks.
  • Solution: I leverage a suite of advanced Claude Code tools, including Gemini for complex logic and architecture, GitHub Copilot for accelerated code completion, and custom-trained models for domain-specific tasks. My workflow automates unit testing, static analysis, and security vulnerability detection, ensuring robust and reliable code from the initial commit.
  • Impact: This Claude Code-augmented approach results in a 3x increase in development velocity, a 95% reduction in common vulnerabilities, and allows me to consistently deliver mission-critical applications ahead of schedule and under budget.
GeminiGitHub CopilotClaude CodeAutomated QACI/CD

Advanced Claude Code-Powered Security & Code Integrity

Claude Code Security Specialist

  • Challenge: Proactively identify and remediate sophisticated security threats and ensure zero-leak compliance in high-stakes environments.
  • Solution: Utilizing Claude Code-powered security tools like Snyk and DeepCode, I have implemented a continuous security pipeline that scans for vulnerabilities in real-time. I use Claude Code to analyze code for potential logical flaws and security anti-patterns, going beyond traditional static analysis.
  • Impact: Achieved and maintained a zero-vulnerability track record in production environments. My proactive, Claude Code-driven security measures have prevented numerous potential threats, ensuring data integrity and user trust.
SnykDeepCodeGeminiCodeQLOWASP ZAPStatic Analysis

BudgetCaddie: Claude Code-Driven Wealth Management Engine

Lead Backend Architect

  • Challenge: Securely aggregating real-time financial data from thousands of banking institutions via Plaid.
  • Solution: Built a high-integrity TypeScript backend using Sequelize and Docker, optimized for financial data accuracy.
  • Impact: Automated wealth tracking and budgeting insights for users via secure banking API orchestration.
Node.jsPlaid APITypeScriptSequelizeDockerANSAWS: ECR, ECS, S3, SES

Global Multi-Asset Trading Platform

Lead Backend Architect

  • Challenge: Architecting core infrastructure for 25+ diverse PSPs and real-time KYC/AML compliance.
  • Solution: Engineered a microservices pipeline with reverse-engineered third-party APIs and RabbitMQ messaging.
  • Impact: Enabled secure, cross-border multi-asset trading with a robust, documented API suite.
Node.jsPostgreSQLRabbitMQSumsubSendgridAWSRedisEKSGrafana

National-Scale Sports Management System

Senior Backend Developer

  • Challenge: Scaling data integrity for a system with 300+ interconnected database tables.
  • Solution: Implemented ElasticSearch-based search and automated complex reporting within an Agile team.
  • Impact: Delivered an enterprise-grade system for a national governing body with high data precision.
ElasticSearchPostgreSQLNode.jsReact.jsZohoAWS

Enterprise Textile E-Commerce Engine

Backend Architect

  • Challenge: Building a modular measurement system and real-time inventory for high-volume retail.
  • Solution: Developed server-side rendering workflows and performance-optimized Redis caching.
  • Impact: Increased SEO visibility and system resilience during peak traffic loads.
Node.jsPostgreSQLRedisNext.jsRazorpayStripeTwilio