Open to opportunities

Sanjeev Kumar

@sanjeevkumar20

Principal Engineer at Cybernamix building agentic AI platforms and cross-platform mobile apps, with e-commerce systems spanning multiple markets.

India

Message

At Cybernamix Inc., I’m leading engineering for AI-first SaaS, agentic platforms, and cross-platform mobile apps. I’m building agentic products with Claude Agent SDK, OpenAI Assistants, LangGraph, and CrewAI, alongside mobile apps published to the App Store and Google Play.

At BYC Furnitures Trading LLC, I designed Shopify and Magento 2 storefronts and a headless commerce layer that improved page-load performance and Core Web Vitals by 60%+. I also delivered a React Native app and an AI-powered product-recommendation engine and showroom chatbot.

Experience

Work history, roles, and key accomplishments

Current

Principal Engineer

Current

Cybernamix Inc.

Jan 2025 - Present (1 year 9 months)

Leading engineering at a Canadian product studio focused on AI-first SaaS, agentic platforms, and cross-platform mobile apps. Driving architecture across the full modern stack, from React Native and Flutter apps to serverless backends and GPU-accelerated AI services.

Current

Full Stack Developer

Current

TicketRoom

Jan 2021 - Present (5 years 9 months)

Engineering partner for a UK ticketing and events platform, delivering new features, payment-gateway hardening, and ongoing platform maintenance. Developed secure checkout flows, QR-code e-tickets, and real-time seat availability.

Stripe PayPal 3D Secure Sendgrid Twilio AWS Cloudflare CI CD

Current

Senior Web Developer

Current

ElevatedSEO

Jan 2020 - Present (6 years 9 months)

Long-running engagement supporting an SEO and digital-marketing agency serving US clients, handling full-stack maintenance, performance engineering, and campaign-driven site builds. Maintains and optimizes WordPress, Shopify, and Webflow client sites with Core Web Vitals tuning, schema markup, and technical SEO.

WordPress Shopify Webflow Core Web Vitals Schema Markup Technical SEO Security Hardening Clickfunnels GoHighLevel Funnelish Mailchimp Klaviyo GA4 GTM Segment Looker

Current

Independent Senior Consultant

Current

Freelance

Jan 2019 - Present (7 years 9 months)

Delivered 200+ freelance engagements for global clients on Upwork, Guru.com, and direct referrals, specializing in AI-assisted builds, e-commerce, and marketing automation. Shipped 100+ Shopify, WooCommerce, Magento, Webflow, and Bubble.io builds.

Shopify WooCommerce Magento Webflow Bubble.io React Native Flutter OpenAI Claude Lang Chain LangGraph Crew AI N8n Clickfunnels GoHighLevel Funnelish Checkout Champ Systeme.Io Kajabi Mailchimp Klaviyo Twilio

Senior Full Stack Developer & Digital Lead

BYC Furnitures Trading LLC

Jan 2020 - Dec 2025 (5 years 11 months)

Led the digital transformation of a multi-region furniture retailer operating across Dubai and Romania, architecting the full e-commerce stack, ERP integrations, multi-language storefronts, and marketing automation. Designed and launched flagship Shopify and Magento 2 storefronts with multi-currency and VAT compliance.

Full Stack Developer → Tech Lead

Softphoton

Jan 2014 - Dec 2020 (6 years 11 months)

Progressed from senior developer to tech lead, delivering SaaS products, marketing funnels, and bespoke web applications for North American, European, and APAC clients. Architected and shipped 50+ WordPress and WooCommerce sites with custom themes and plugins.

WordPress WooCommerce React NodeJS Laravel MongoDB Stripe Mailchimp ActiveCampaign ConvertKit Twilio Zapier HubSpot Shopify Docker CI CD Elementor ACF

Web Developer & Admin Support

Hordanso LLC

Jan 2014 - Dec 2020 (6 years 11 months)

Long-term contract engagement with a US-based technology services firm, handling web development, site administration, hosting operations, and client-account support. Built and maintained WordPress, Joomla, and PHP websites for US SMB clients.

WordPress Joomla PHP CPanel WHM (Web Host Manager)DNS SSL Security Hardening

Software Engineer → Senior Web Developer

Deftsoft Informatics Pvt. Ltd.

Jan 2008 - Dec 2014 (6 years 11 months)

First professional chapter, building a strong foundation across LAMP, CMS, and early JavaScript ecosystems while delivering projects for US, UK, and Australian clients. Developed dynamic websites and web apps in PHP, MySQL, jQuery, and CodeIgniter.