Headline

Full-Stack Developer (React · Node.js · FastAPI) | I build production systems for growing businesses, multi-tenant SaaS, AI pipelines, Shopify integrations & REST APIs that scale

About

I build the backend systems that small businesses actually run on inventory, POS, attendance, billing, Shopify integrations, and business workflows. At RocketSales, I’ve worked across the full stack on production systems handling real operational data: > Built inventory and POS workflows across companies and branches, including stock movements, purchase bills, deliveries, returns, and an auditable inventory ledger. > Integrated a FastAPI face-recognition service with Node.js for employee check-in/out, including geofencing, timestamps, and fallback enrollment workflows. > Built two-way Shopify REST and GraphQL integrations to synchronize products, inventory, orders, and fulfillment with an offline inventory system. > Developed GST billing workflows, vendor ledgers, shipping-label generation, POS interfaces, and role-based employee/payroll/leave management. > Built a repair-shop module covering customer intake, job tracking, payment history, and financial reporting. > Worked with React, Next.js, Node.js, Express, FastAPI, MongoDB, PostgreSQL, and third-party APIs to ship and maintain production features. I’m particularly interested in backend architecture, business logic, API design, data consistency, and building systems that remain reliable when the edge cases show up.

Location

Greater Nagpur Area

AI stack

antigravity

claude code

claude

codex

cursor

github copilot

Work experience

Full Stack Engineer at HB GADGET TECHNOLOGY & SOLUTIONS PVT. LTD, Apr 2026 - Present · 5 mo, Nagpur, Maharashtra, India, Working as a Full-Stack Developer, building and maintaining production business applications using React, Node.js, FastAPI, MongoDB, and PostgreSQL. • Developed a multi-tenant Sales & Inventory platform covering inventory, POS, attendance, financial tracking, and branch operations. • Engineered real-time Stock In/Stock Out workflows using MongoDB aggregation pipelines across company, branch, and date dimensions, with automated synchronization from Purchase Bills and Deliveries. • Integrated a FastAPI-based face-recognition engine with Node.js for real-time employee attendance, including geofencing, timestamping, and fallback enrollment workflows. • Integrated Shopify REST and GraphQL APIs to synchronize products, inventory, orders, and fulfillment between offline inventory and e-commerce channels. • Developed employee, payroll, leave, GST-aware billing, vendor ledger, shipping label, and POS workflows with role-based access. • Built a Repair Shop Management system covering repair order lifecycle, customer history, payments, shop operations, and financial reporting. • Worked across the full development lifecycle, from database/schema design and API development to frontend implementation, integration, debugging, and production delivery.

Frontend Web Developer at LabelLift, Oct 2025 - Feb 2026 · 4 mo, Remote, Worked as a Full-Stack Developer Intern, contributing to production web applications using React, Next.js, REST APIs, and backend services. • Built responsive UI features from Figma designs using React, Next.js, and Tailwind CSS. • Developed reusable components and integrated REST APIs across key application modules. • Delivered 10+ production React UI components covering suspension, royalty, profile management, admin dashboards, and user-role management. • Fixed critical data-integrity issues in the /artist and /label endpoints, unblocking two stalled features. • Improved UI performance, responsiveness, and layout consistency across the application. • Worked on features end-to-end, from UI implementation and API integration to debugging and production delivery. • Submitted 15+ pull requests while following Git-based development and review workflows.

Education

Bachelor's Of Computer Application- BCA, Computer Software Engineering, Rashtrasant Tukadoji Maharaj Nagpur University (RTMNU)

Bachelor of Computer Applications, Rashtrasant Tukadoji Maharaj Nagpur University

Public links

github: https://github.com/abhaytiwariii

abhaytiwari.vercel.app: https://abhaytiwari.vercel.app/