Hi, I'm Sunil Kulkarni
Lead Software Developer
Specializing in React/Next.js, Commercetools, Merchant Center, and Frontastic Studio composable web solutions. I build high-fidelity interactive systems, state management engines, and unified components designed to load in milliseconds and scale infinitely.
My Technical Story
Bridging product strategy and engineering logic
I am a Lead Software Developer with over 10 years of full-time experience in the IT industry. I specialize in building composable commerce storefronts, dynamic B2B & B2C platforms, and high-performance frontend architectures. My expertise spans React.js, Next.js, Commercetools, Merchant Center configurations, Frontastic Studio adjustments, and SAP Spartacus platforms.
I thrive in complex business domains where checkout logic, cache validation, and product telemetry need to stay smooth. Whether it is building custom order management setups at Zumiez, integrating SAML Single Sign-On at Benjamin Moore, launching headless veterinary ecommerce platforms at Cencora MWI, or handling portal migrations at Mercedes Benz, I dedicate my focus to architectural clarity and performance.
I avoid ad-hoc solutions and instead build modular visual standards. I believe developers shouldn't fight their layout files—they should assemble them cleanly using unified design tokens.
Composable commerce & Headless UI
Designing storefront interfaces on Commercetools, managing catalogs via Merchant Center, and adjusting page components in Frontastic Studio.
React & Next.js Architecture
Building server-side rendered (SSR) web applications and static sites, optimizing bundle chunks and rendering cycles.
Technical Leadership & Delivery
Steadfast in planning, coaching trainees, doing code reviews, and implementing development strategies based on industry best practices.
My Engineering Focus
Designing scalable commerce systems with decoupled frontends and robust data flows.
Headless Decoupling
Decoupling catalog data using Commercetools APIs and Frontastic Studio components ensures frontends are agile and fast.
SSR & Next.js Speed
Storefront bounce rates grow with loading delays. I optimize Next.js server caches to deliver pages in under 200ms.
State Management
Ecommerce carts, multi-step checkouts, and customer profiles require predictable state patterns (Redux/NGRX).
UI Systemization
Using unified tokens and accessible primitives (Radix) prevents styling regressions and speeds up page creation.
Skills Visualization Matrix
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Commerce & Storefronts
Enterprise e-commerce frameworks and headless tools.
Composable storefront core libraries, customizations & upgrades
B2C & B2B storefront setups, OCC APIs, ImpEx, CMS integration
Headless B2B & B2C cloud ecommerce engine solutions
CMS component authoring slots & preview configurations
Professional Experience
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Lead Software Developer / Senior Spartacus UI Consultant
Benjamin Moore
"Lead Developer responsible for composable storefront customizations, Angular version upgrades, and integrations with third-party systems."
Key Focus & Architecture
- Customized composable storefront/Spartacus in SAP Commerce Cloud using Angular 15 & 17 and SCSS from scratch.
- Implemented Single Sign-On (SSO) login for Composable Storefront using SAML protocol, integrating it with Salesforce CRM and Microsoft Azure Active Directory.
- Customized checkout flow APIs (Shipping Address, Delivery Mode, Payment Mode) to suit enterprise transactional requirements.
- Integrated SAP Customer Data Cloud (CDC) with SAP Commerce Cloud and Composable Storefront.
Business Impact
Production Project Showcases
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Cencora MWI Animal Health Ecommerce
Headless B2B & B2C ecommerce storefront for veterinary diagnostics, combining Commercetools, Merchant Center, and Frontastic Studio layouts.
Zumiez Fluent OMS Frontend
Customized order management console featuring order modification, customer appeasements, and instore pick-pack modules.
Benjamin Moore Composable Storefront
Development and personalization of a high-speed composable storefront using SAP Spartacus, incorporating SSO and checkout optimizations.
Mercedes Benz Portal Re-theming
Major visual overhaul and custom library optimization for Mercedes Benz's online portals using Spartacus and Angular.
Levis Ecommerce Custom UI
Development of interactive landing templates, product filters, and checkout logic adjustments for global retail portals.
My Engineering Workflow
How I turn product logic into stable codebases
Product Scope & API Contracts
Collaborating with designers and backend teams to lock down user flows, UI layouts, and API schemas before writing code.
- ・Figma/UX design inspections & edge case audits.
- ・JSON payload and GraphQL Schema definitions.
- ・Mock API setup for parallel development paths.
- ・Strict TypeScript response interface files.
- ・Mock API Server endpoints configuration.
interface MerchantContract {
id: string;
status: "active" | "suspended" | "pending";
billing: {
currency: string;
balanceCents: number;
lastPaymentDate: string;
};
}Let's Connect
Say hello or discuss telemetry
Whether you are scaling a product development team, starting a composable commerce audit, or seeking full-time technical leadership, let's establish contact.