Lead Software Engineer - Big Commerce

EPAM Systems India Pvt Ltd; India; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

EPAM Systems India Pvt Ltd invites an accomplished Lead Software Engineer with strong BigCommerce credentials to architect and deliver omnichannel storefront experiences. You will own technical leadership across headless and native commerce builds and guide a distributed team.

You will drive modern front-end frameworks (React/Next.js/Remix), implement CI/CD, ensure accessibility (WCAG 2.1 AA), localization for English and French Canadian markets, and collaborate with CMS, DAM, and marketing

Qualifications

• 8+ years front-end engineering experience delivering enterprise-grade commerce platforms.
• 5+ years with BigCommerce including headless storefronts and GraphQL APIs.
• Strong mastery of JavaScript/TypeScript and modern frameworks (React/Next.js/Remix).
• Experience with CI/CD and automated testing frameworks.

Responsibilities

• Own BigCommerce storefront architecture for headless and native builds, including design system integration and performance safeguards.
• Lead front-end engineers across nearshore and offshore teams, guiding delivery and quality.
• Drive accessibility (WCAG 2.1 AA), localization, and SEO while coordinating with CMS, DAM, and marketing platforms.

Skills

BigCommerce

Front-end leadership

React/Next.js/Remix

TypeScript/JavaScript

Accessibility WCAG

Performance optimization

CI/CD tooling

Distributed teams

GraphQL

Node.js

Tools

GitHub Actions

Azure DevOps

CircleCI

Jest

Playwright

Cypress

Job description

We're looking for an accomplished Lead Software Engineer with strong BigCommerce credentials to architect and deliver forward-thinking storefront experiences. This position calls for someone who can own complete technical leadership across headless and native commerce builds, guide a distributed engineering group, and craft polished, high-performing omnichannel digital journeys.

Responsibilities

• Take full ownership of BigCommerce storefront architecture, spanning both headless and native Stencil implementations, covering design system integration, component library management, and performance safeguards
• Set up and sustain modern front-end frameworks such as React/Next.js/Remix, along with API orchestration layers and personalization hooks that fuel dynamic, cross-channel experiences
• Convert UX designs into polished, production-ready responsive interfaces, with careful attention paid to accessibility standards (WCAG 2.1 AA) and localization needs for English and French Canadian markets
• Run code reviews, uphold engineering standards, and establish automated testing and CI pipelines across storefront codebases
• Deliver sophisticated BigCommerce customizations, including checkout flow design, theme extensions, GraphQL storefront API implementation, micro-frontend approaches, and integration of third‑party applications covering payments, search, loyalty, and personalization
• Coordinate integrations across CMS, DAM, and marketing platforms to simplify content workflows, campaign execution, and PIM‑based merchandising changes
• Enhance site performance, SEO effectiveness, and Core Web Vitals, while maintaining observability dashboards to catch issues before they elevate
• Guide nearshore and offshore front‑end engineers, manage daily task coordination, clear blockers, and cultivate a culture that embraces AI‑assisted development
• Document best practices, runbooks, and playbooks that support smooth transitions, effective onboarding, and continuous refinement without interrupting regular release cycles

Requirements

• 8 or more years of front‑end engineering background delivering enterprise‑grade commerce or experience platforms
• At least 5 years working directly with BigCommerce, including headless builds using Storefront GraphQL, REST Admin API, Channels API, and BigCommerce Widgets/App frameworks
• Strong command of modern JavaScript/TypeScript, React/Next.js (or Remix), and Node.js
• Deep knowledge of CSS‑in‑JS approaches, state management solutions (Redux, Zustand), and component‑based development practices (Storybook, atomic design)
• Demonstrated track record leading client‑facing initiatives, with the ability to translate UX and business objectives into technical strategy and communicate trade‑offs on the fly
• Evidence of delivering robust, high‑performing front‑end experiences connected with MACH‑based services, including CMS, search, personalization engines, CDP/CRM, and DAM
• Solid grasp of responsive design principles, accessibility standards, and SEO, plus experience with analytics tagging and A/B test enablement
• Background working with CI/CD tooling (GitHub Actions, Azure DevOps, CircleCI) and automated testing frameworks (Jest, Playwright, Cypress)
• Working knowledge of performance‑tuning tools such as Lighthouse and WebPageTest
• English communication skills at a B2 level or above
• Nice to have Exposure to GCP/Vertex AI‑powered experiences, Dynamic Yield personalization tools, or agentic/conversational commerce solutions
• Background with Shopify, commercetools, or SAP Commerce, along with the ability to apply composable best practices across platforms
• Understanding of Canadian retail and promotional calendars, bilingual content management, and localized digital strategies
• Experience with design operations, Figma‑to‑code pipelines, and governance of design systems
• Ease of use with AI copilots and automation tools to speed up development and strengthen regression testing coverage