Available for Full-time / Contract

Kartik
Patel

Senior Backend Engineer — Scalable Systems & AI Architectures

Building high-performance backend infrastructure, real-time communication platforms, and AI-powered search systems. 3+ years turning complex engineering challenges into production-grade solutions.

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3+
Years Experience
80+
Apps Supported
40%
Perf. Gained
2
IEEE Papers
01 — About

Who I Am

Senior Backend Engineer with 3+ years of experience building scalable, high-performance systems and real-time communication platforms. Specialized in Laravel, Symfony, WebSockets, and AI-powered search architectures (Solr, LLMs).

Proven track record in designing high-concurrency backend systems, optimizing database performance, and integrating global communication APIs like Twilio and APNs. Strong focus on system scalability, clean architecture, and production-grade reliability.

Experienced in building SaaS automation platforms, AI-driven search systems, and high-integrity webhook infrastructures for global applications. IEEE-published researcher with a machine learning paper achieving 93% accuracy.

Key Achievements

Improved backend performance by 40% via query optimization & caching
Built systems supporting 80+ production iOS applications globally
Designed real-time communication infrastructure using Twilio & WebSockets
Implemented Apache Solr, improving search performance by ~400% over SQL
2nd Place — Code Decode Competition, Parul University (2021)
02 — Skills

Technical Expertise

Core Architecture & System Design
Scalable System Design API Architecture Latency Optimization Microservices Database Design (ERD) High-Concurrency Systems
Backend & Frameworks
Laravel Symfony PHP Livewire Node.js Django FastAPI (Python) JavaScript ES6+ Shell Scripting
Real-Time & Communication Systems
WebSockets (Laravel Reverb) Twilio API (Voice/SMS/VoIP) APNs (Apple Push) FCM (Firebase) Webhook Systems
Databases & Search
Apache Solr MySQL (Query Optimization) PostgreSQL Redis Vector Search N+1 Resolution
AI & Automation
LLM Integration Vector & Image Search TTS/STT Systems Meta Graph API TikTok & Telegram Automation NLP
DevOps, Security & Infrastructure
Docker AWS (EC2, S3) CI/CD (GitHub Actions) RunCloud OAuth 2.0 JWT Webhook Security PHPUnit / Pest Larastan Linux / macOS
03 — Experience

Work History

Senior Backend Developer & Architect
Sep 2025 — Present
Techmero · Vadodara, India
  • Scalable Architecture: Architected a unified backend for 12+ global iOS apps using Twilio (VoIP, SMS, Voicemail), improving communication reliability and scalability.
  • Fraud Detection: Engineered real-time API-level spam detection and reputation scoring to block fraudulent calls and improve security.
  • Real-Time Push System: Built a centralized push notification hub (FCM/APNs) with dynamic credential routing for large-scale app ecosystems.
  • Performance Optimization: Resolved N+1 query issues, optimized SQL queries and caching — improving API response speed by ~40%.
  • Real-Time Communication: Implemented Laravel Reverb (WebSockets) for low-latency, real-time system interactions.
  • Webhook Engine: Built a high-integrity Apple Server-to-Server webhook processing system supporting 80+ apps with reliable financial event handling.
  • AI Refund System: Designed an AI-based refund validation mechanism to reduce revenue leakage and automate decision workflows.
  • SaaS Automation: Engineered a multi-platform automation system integrating Instagram, Facebook, TikTok, and Telegram.
  • AI Audio Service: Developed a Python (FastAPI) microservice for voice synthesis and background noise suppression.
Full-Stack PHP Developer
Jul 2023 — Aug 2025
Siimteq Technology · Vadodara, India
  • Search Architecture: Implemented Apache Solr for millisecond-latency search across large ERP datasets, improving query performance by up to 4x vs. SQL.
  • System Performance: Optimized complex queries, resolved N+1 issues, and implemented caching to reduce load time for high-traffic ERP systems.
  • AI-Powered Search: Integrated local LLMs to build vector-based and image-to-product search capabilities, enhancing search UX significantly.
  • Platform Development: Built scalable Laravel applications, custom WordPress plugins, and Shopify integrations.
Trainee PHP Developer
Jan 2023 — Jun 2023
Simform Solutions · Ahmedabad, India
  • Backend Foundations: Built web applications using Core PHP and Symfony MVC, focusing on scalable and maintainable code structure.
  • API Development: Developed and integrated RESTful APIs with emphasis on secure data handling and performance optimization.
  • Project Development: Designed and built a full-cycle Project Management System (Projecto) covering backend logic, routing, and application flow.
  • Code Quality: Applied clean code practices, debugging, standard design patterns, and Git workflows in a collaborative team environment.
04 — Projects

Selected Work

Projecto — Project Management System
Full-cycle PMS with real-time dashboard, Microsoft SSO, task tracking, PDF exports, team analytics, and role-based panels for managers and employees.
Symfony PHP MySQL Microsoft OAuth
AI Face Recognition Attendance
AI-powered attendance system using facial recognition with a web portal for staff/admins and a parent mobile app for real-time attendance tracking.
Python OpenCV PHP MySQL
Multi-Format QR Code System
Advanced QR code generation platform supporting text, URLs, Wi-Fi credentials, contacts, files, locations, music, and video with download options.
Core PHP MySQL JavaScript
Exam Preparation Platform
Educational platform for students to access past papers and study materials. Teachers create exams; students take them with on-camera validation. Full admin tracking dashboard.
PHP Laravel JavaScript MySQL
05 — Services

What I Offer

Backend Development
Scalable, production-grade backend systems using Laravel and Symfony. Clean architecture, optimized queries, and maintainable codebases.
AI Integration
Integrating LLMs, vector search, image-based search, and AI-driven automation workflows into existing or new platforms.
Scalable System Design
Architecture consulting for high-concurrency systems — designing for performance, reliability, and horizontal scaling from the ground up.
Search & Data Systems
High-performance search implementation using Apache Solr, vector search, and AI-powered query parsing for large-scale datasets.
API & Integration
REST API design, Twilio/APNs communication systems, third-party integrations, and secure webhook infrastructure.
Technical Research & Writing
Academic and technical writing with IEEE publication experience. Machine learning research and data analysis documentation.
06 — Research

IEEE Publications

AI-Driven Mobile Usage Tracking and Management System for Youth
2025
IEEE Xplore — ICICDS
Introduces an AI-powered framework for monitoring and predicting youth screen time using machine learning models. Achieves 93% accuracy with a Random Forest classifier, with personalized usage-reduction recommendations and digital well-being insights.
Authors: Kartik Patel, Khyati Zalawadia, Mukesh Patidar
View on IEEE Xplore
Youth Mobile Usage Monitoring: A Comprehensive Overview of Trends and Tools
2024
IEEE Xplore — ICACRS 2024
Explores youth mobile usage patterns using focus groups, surveys, observational studies, and machine learning. Highlights privacy concerns, implementation challenges, and the role of AI in promoting healthy digital habits.
Authors: Kartik Patel, Khyati Zalawadia, Vipulkumar Dabhi
View on IEEE Xplore
07 — Education

Academic Background

Master of Technology (M.Tech) — Computer Science & Engineering
Parul University, Vadodara
2023 — Present Pursuing
Bachelor of Technology (B.Tech) — Computer Science & Engineering
Parul University, Vadodara
2019 — 2023 CGPA: 7.99 / 10
Higher Secondary (12th Grade) — Science (Mathematics)
Zen School, Padra
2018 — 2019 80%
Secondary School (10th Grade) — Science
Sharda School, Padra
2016 — 2017 93.93%
08 — Contact

Get In Touch