MERN Full Stack Developer – Custom D2C E-commerce Platform
Mumbai | Full-time | 3–5 years
About Alpha Male
Alpha Male is one of India's first premium, science-backed men's wellness brands. We sell direct-to-consumer, and our brand is built on trust, discretion, education and a premium experience. We're a young, fast-growing team based in Mumbai.
About the Role
We're building our own custom D2C e-commerce platform from scratch. You will design the architecture, build, launch and maintain the complete platform: website, order flow, payments, shipping, admin panel, CRM, automations and reporting. You will be the technical owner of our D2C stack and work directly with leadership.
Tech Stack
MongoDB, Express.js, React / Next.js, Node.js (MongoDB Atlas, AWS / Vercel, GitHub)
WHAT YOU WILL DO
- Planning & Architecture
- Understand business requirements and convert them into a technical plan and timeline
- Design the system architecture, database schema and API structure
- Work with the UI/UX designer and build from approved Figma designs
- Set up the GitHub repository, coding standards, and staging and production environments
- Storefront (Customer Website)
- Build a fast, SEO-friendly, mobile-first website using Next.js (SSR / SSG)
- Home, collection and product pages, combos and bundles, search, blog / education pages, FAQs, about and policy pages
- SEO setup: meta tags, sitemap, schema markup, clean URLs and page speed (Core Web Vitals)
- Customer reviews and ratings, trust badges and offer banners
- Cart, Checkout & Customer Accounts
- Cart, coupons and discounts, OTP-based login and saved addresses
- Pincode serviceability check, prepaid and COD options, order summary
- Customer account: profile, order history, order tracking, reorder, returns and refunds
- Payment Gateway Integration
- Integrate Razorpay / Cashfree (UPI, cards, net banking, wallets)
- Server-side payment verification through webhooks and signature checks (never trusting the browser alone)
- Failed-payment handling and retry, refunds through the gateway API
- Daily payment-to-order reconciliation so every successful payment creates an order
- Orders, Invoicing & Inventory
- Complete order lifecycle: placed, confirmed, packed, shipped, delivered, cancelled, returned
- GST-compliant invoice generation (PDF)
- Real-time inventory updates, with no overselling of the last unit
- Shipping & Logistics Integration
- Integrate Shiprocket (or similar): order push, AWB generation, label printing
- Live order tracking for customers, delivery status updates, NDR handling
- COD remittance tracking
- Admin Panel
- Secure admin with role-based access (admin, operations, marketing, support)
- Manage products, variants, prices, inventory, orders, customers, coupons, banners and returns
- Bulk actions, order exports and activity logs
- CRM
- Customer profiles with full purchase history
- Tags, segments, lifetime value and repeat-purchase tracking
- Customer data available for marketing and retention campaigns
- Automations (WhatsApp, SMS & Email)
- Order confirmation, shipping, delivery and refund updates
- Abandoned-cart recovery, reorder reminders, review requests and COD-to-prepaid nudges
- Integrate WhatsApp Business API, MSG91 (SMS / OTP) and an email service (AWS SES / Resend)
- Tracking, Analytics & Reports
- Set up GA4, Meta Pixel + Conversions API and Google Ads conversion tracking
- Product feed for Google Merchant Center and Meta catalogue
- Reports dashboard: sales, orders, AOV, repeat rate, SKU performance, COD vs prepaid
- Hosting, Security & Performance
- Deploy and manage hosting on AWS / Vercel / Render with SSL, domain and CDN
- Secure authentication, input validation, rate limiting and secure handling of secrets
- No card data stored, with customer data protected in line with India's DPDP Act
- Automated database backups, error monitoring (Sentry) and uptime monitoring
- Keep the site fast and stable during sales and high-traffic periods
- Day-to-Day Maintenance
- Daily: check errors and uptime, reconcile payments with orders, fix urgent issues
- Weekly: bug fixes, content and product updates, backup checks, speed review
- Monthly: security and package updates, performance report, new features as planned
- Test every change on staging before it goes live
- Documentation & Ownership
- Maintain clear documentation: README, API docs, architecture and setup guides
- Keep all code, servers and accounts in the company's name
- Write clean, maintainable code so the platform can scale and be handed over easily
- Collaboration
- Work with leadership on priorities and timelines, with regular progress updates
- Work with the performance marketing team on tracking, landing pages and offers
- Work with operations and customer support on order, shipping and return issues
REQUIREMENTS
- 3–5 years of hands-on experience with MongoDB, Express, React and Node.js
- Has built and launched at least one live e-commerce or payment-enabled web application
- Experience integrating payment gateways (Razorpay / Cashfree / PayU) with webhooks
- Robust experience with Next.js for SEO-friendly, high-performance websites
- Experience integrating third-party APIs (shipping, SMS, WhatsApp, email)
- Experience deploying and maintaining production apps on AWS, Vercel or Render
- Good understanding of security, performance and database design
- Clean, documented code and a strong sense of ownership
GOOD TO HAVE
- TypeScript, Redis, Docker and CI/CD
- WhatsApp Business API, Shiprocket or Shopify API experience
- Experience at a D2C or e-commerce startup
WHAT WE OFFER
- Competitive CTC
- Build a complete D2C platform from scratch and own its architecture
- Direct work with leadership, with fast decisions
- A fast-growing brand with room to grow into a tech lead role
HOW TO APPLY
Apply through LinkedIn, or email your CV with your GitHub profile and live project links to
[email protected] with the subject line Application – MERN Full Stack Developer
#Hiring #MERNStack #FullStackDeveloper #NextJS #MumbaiJobs
📌 Full Stack Developer (MERN) (Mumbai)
🏢 Alpha Male
📍 Mumbai