Technical Lead · Backend Engineer · System Designer

Kiren S

Building enterprise systems that scale,
teams that grow, and code that lasts.

  • 15+ Years Experience
  • Laravel Expert
  • Symfony Expert
  • PHP Specialist
  • System Designer

The person behind the code

KS

I'm a Technical Lead with over 15 years of hands-on experience architecting and delivering web applications for clients across India, Germany, and the USA.

My expertise spans clean architecture, domain-driven design, and building backend systems that are secure, testable, and built to grow. Over 7 years of close collaboration with German engineering teams have sharpened my appreciation for precision, international standards, and cross-cultural communication.

Beyond the code, I care about the people around it — mentoring developers, bridging business stakeholders and technical teams, and fostering cultures of ownership and transparency within Agile environments.

15+ Years Experience
7 Years German Client Work
6 Companies
10+ Major Projects

Technology & Expertise

Backend

PHP Laravel Symfony Laminas Zend Framework Shopware 6 Node.js Express Lumen PHPUnit

Frontend

JavaScript React Angular HTML5 CSS3 jQuery Kendo UI

Databases

MySQL Elasticsearch Solr Informix 4GL Doctrine ORM Eloquent ORM

Cloud & Infrastructure

AWS EC2 S3 SNS Load Balancer

DevOps

Docker Jenkins Ansible CI/CD Git Vagrant RabbitMQ

Architecture & Standards

DDD CQRS Event Sourcing Microservices REST API JSON API OWASP TDD Agile / Scrum

Professional Journey

  1. Gadgeon Smart Systems Pvt. Ltd.

    Technical Lead

    Currently contributing technical leadership to the engineering team at Gadgeon Smart Systems, a technology company based in Smart City Kochi.

    gadgeon.com ↗
  2. Yuhiro Technologies Pvt. Ltd.

    Technical Lead

    Led development and system design across multiple enterprise projects for German clients over 5+ years. Architected Product Information Management systems, process analysis tools, and Shopware integrations. Mentored developers and drove engineering standards.

    • Architected Hensel's PIM system with Laravel — product management, media, translations, BMECAT, ACL, and Zapier integration
    • Upgraded Symfony 5.4 → 6.4 for RelayIQ process analysis platform
    • Developed Shopware 6 product sync package including media, cross-selling, and property groups
    • 7 years total exposure to German engineering standards and cross-cultural collaboration
    yuhiro.de ↗
  3. EQS Web Technologies Pvt. Ltd.

    Senior Developer

    Worked on EQS CRM — a contact management and IR mailing platform — and Core Microservices consumed across the EQS product suite.

    • Optimised CRM home page achieving significant load time improvements
    • Maintained 80–90% test coverage using TDD practices
    • Developed CQRS-based microservices gateway with Symfony, Node.js, and Elasticsearch
    • Conducted live coding sessions for backend developers on JavaScript and Angular
    eqs.com ↗
  4. Micro Objects (P) Ltd.

    Senior Developer

    Delivered diverse client projects including university management systems, music learning platforms, mobile game web services, and social networking applications.

    • Led migration of San Diego State University's legacy 4GL/Informix system to PHP/MySQL
    • Built BeaRecorderStar interactive music learning platform with AWS, EC2, and SNS
    • Developed Mobile Soccer Game Webservices with Laravel/Lumen
    • CoFoundersLab social platform with multi-API integration (Facebook, LinkedIn, Google Maps)
    microobjects.net ↗
  5. SOD Technologies (P) Ltd.

    Developer

    Delivered web application projects at an Infopark-based software company with a focus on backend development and client delivery.

    sodtechnologies.com ↗
  6. Feathersoft Info Solutions Pvt. Ltd.

    Junior Developer

    Started my career building web applications and solidifying foundations in PHP, MySQL, and software development practices.

    feathersoft.com ↗

Featured Work

RelayIQ

Lead Developer

A process analysis tool for detecting anomalies in workflows. Responsible for Symfony application development and a major framework upgrade from 5.4 to 6.4.

  • Symfony 5.4 → 6.4 migration with zero downtime
  • Anomaly detection pipeline optimisation
Symfony MySQL

Hensel PIM

System Designer & Lead Dev

Product Information Management system for Hensel Electric Germany — a manufacturer of electrical installation and power distribution systems.

  • End-to-end system design and reusable component library
  • BMECAT export, ACL, multi-language, Zapier automation
  • Media management, product workflow and approval engine
Laravel MySQL Zapier

EQS CRM

Senior Developer

Contact management and professional mailing platform for investor relations. Delivered performance optimisation, TDD, and Angular coaching to the team.

  • 80–90% test coverage with TDD across all features
  • Significant homepage performance improvement
  • CI/CD pipeline integration
Symfony Angular Doctrine

Core Microservices

Backend Engineer

Foundational microservices consumed across the EQS product suite. Implemented CQRS architecture and built the API gateway layer.

  • CQRS-based event architecture
  • Microservices gateway design and implementation
  • Elasticsearch integration for search across services
Symfony Node.js Elasticsearch CQRS

SDSU Management System

System Designer & Lead Dev

Web application for student invoices, disbursements, and academic management at San Diego State University USA — migrated from a legacy 4GL/Informix system.

  • Legacy 4GL/Informix → PHP/MySQL full migration
  • Role management ACL and Kendo UI implementation
  • SOS Berlin job scheduler integration
Zend Framework MySQL Informix

BeaRecorderStar

System Designer & Lead Dev

An online interactive platform helping students learn to play the Recorder instrument, featuring drag-and-drop musical notation and HTML Canvas animations.

  • Interactive drag-and-drop music note validation
  • HTML Canvas + Audio Player integration
  • AWS EC2, SNS, Load Balancer deployment
Laravel AWS JavaScript

Shopware 6 Integration

Developer

A Shopware 6 package for syncing product catalogues via the Shopware Admin API, including media assets, child products, and cross-sell relationships.

  • Full product sync: media, variants, cross-selling, properties
  • Reusable PHP package for Shopware API integration
PHP Shopware 6

Appointment Management System

System Designer & Lead Dev

A scheduling platform integrating directly with Microsoft Exchange Server for enterprise appointment creation and management with real-time notification support.

  • PHP integration with Microsoft Exchange Web Services (EWS)
  • Real-time notification system
Laravel MySQL Microsoft EWS

Career Highlights

15+ Years Experience

Over a decade of delivering enterprise web applications across diverse domains.

International Collaboration

7 years working with German clients — precision engineering and cross-cultural teamwork.

Technical Leadership

Leading engineering teams, setting architecture direction, and mentoring developers.

Secure Coding

OWASP-aware development practices built into every project from the ground up.

Test-Driven Development

Consistently maintaining 80–90% test coverage using PHPUnit and TDD methodologies.

System Design

Architecting scalable systems using DDD, CQRS, Event Sourcing, and Microservices.

Performance Optimisation

Significant load time and throughput improvements across enterprise-grade applications.

Agile Practitioner

Experienced Scrum team member, sprint planner, and Agile process facilitator.

Academic Background

  1. Master of Computer Application (MCA)

    STAS Edappally, Ernakulam, Cochin

    64%

  2. B.Sc. Electronics

    STAS Edappally, Ernakulam, Cochin

    68%

  3. Plus Two (Higher Secondary)

    St. Joseph's Higher Secondary School, Thalassery

    60%

  4. SSLC (Secondary School Leaving Certificate)

    St. Joseph's Higher Secondary School, Thalassery

    78%

Get in Touch

Available for technical leadership roles, consulting engagements, and architecture discussions.