Headline

Senior Full-Stack & AI Engineer · 7+ yrs · React/Next.js · Node/NestJS · PostgreSQL · LLM/RAG features in production · E-commerce, ERP & manufacturing systems

About

Senior full-stack engineer, 7+ years, who takes systems from requirements and architecture through APIs, frontends, integrations, infrastructure and production — and has led the teams and client relationships doing it. Core stack: React/Next.js, Node/NestJS, TypeScript, PostgreSQL, Redis, Kafka, WebSockets, Docker, CI/CD. Domains: e-commerce (Shopify Plus, Salesforce Commerce Cloud, ERP/PIM/POS integrations), ERP and business systems, and manufacturing software that talks to real hardware — PLCs, barcode scanners, printers, industrial cameras. AI is part of that toolkit: an LLM layer with embeddings and vector search inside a live ERP; a self-hosted Whisper pipeline for voice messaging and call transcription in a disaster-response platform; OCR document processing; and currently an AI-based product in my current role. Day to day I work AI-native, using Claude Code for root-cause analysis, production audits and test generation. Leadership: led complete projects and specific areas with teams of up to 5; owned estimation, delivery planning and go-lives; worked directly with clients on requirements, scope and roadmap; mentored new joiners from day one until they had no dependency on me. Co-built an open-source project (ODS Command Center for Salesforce B2C sandboxes) and have run webinars on web development. Outside work: ultra runner, training for triathlons, squash whenever I can, and I organise a local running community.

Location

Jaipur

AI stack

antigravity

claude code

claude

cursor

github copilot

Figma Make

Work experience

Senior Software Engineer at IZNA, Apr 2024 - Present · 2 yrs 7 mos, Remote, Senior engineer on client products across e-commerce, ERP integrations and a dealer-ordering platform — developer, frontend lead or project lead depending on the engagement, and the client's technical contact on most of them. • Dealer portal (project lead, team of 5): admin and ordering portal around an integrated 3D product designer — multi-role user management, multi-stage approvals, file processing, Excel generation, automated translations, Salesforce integration. Owned architecture, framework selection, database design, estimation and delivery planning. React, Next.js, NestJS, MongoDB, Python, AWS S3/SNS. • Promotions and pricing platform for a national photo retailer (Shopify Plus + Dynamics NAV): syncs thousands of NAV offers into a 12,000+ variant catalog — NestJS/TypeORM sync worker on PostgreSQL, TypeScript Shopify Functions (Cart Transform, Discount, checkout validation) within Shopify's instruction budget, storefront and checkout UI extensions. Owned discount correctness on a revenue-critical checkout path, Loki-based deploy verification and drift-repair tooling; integrated STOQ, Resend and Catsy. • POS ↔ Shopify middleware for an 8-store bicycle retailer: primary engineer on the Lightspeed ↔ Shopify ↔ Akeneo ↔ ShipStation sync — Node/TypeScript services, React/Polaris admin, Supabase Postgres with pg_cron and edge functions, Shopify Functions for multi-location fulfilment. Reconciled 9,400+ variants at ~99.9% accuracy and reported findings to the client. Docker Compose + GitHub Actions zero-downtime deploys. • Frontend lead on a multilingual Salesforce Commerce Cloud storefront (PWA Kit, SFRA): Adyen payments, Booxi appointments, Contentful schema approved by the client's content team, accessibility and cookie compliance, go-live and stabilisation. • Headless Shopify storefront migrated from Astro to React with Sanity CMS and Vercel functions. AI-native day to day: Claude Code for root-cause analysis, production audits and tests.

Senior Software Engineer at Wisflux Tech Labs, Apr 2022 - Mar 2024 · 2 yrs, Jaipur, Tech lead on the company's most complex systems — real-time manufacturing software with hardware on the line, and an ERP with a calculation engine and an LLM layer — while mentoring every new joiner. • Paperless line-execution system for a global manufacturer (tech lead, 4 developers; client-facing from discovery and prototype demos through go-live): production stations synced with SAP and Oracle through Redis queues, live line visualisation over WebSockets, one-way flow enforcement with configurable station behaviour. Integrated the hardware on the floor — PLCs, barcode scanners, label printers, industrial cameras, electronic tags. Shipped in ~6 months across 10+ production lines; two internal awards. React, NestJS, Electron, PostgreSQL, Python. • ERP platform: purchase orders, approvals, inventory, accounting and production planning with a dependency-tree calculation engine — Kafka moving heavy calculations off the request path, PostgreSQL LISTEN/NOTIFY → WebSockets pushing results to users viewing affected data, MariaDB → PostgreSQL migration, hash-based document verification. Added the AI layer: OpenAI LLMs, embeddings and vector search so staff ask for operational data in plain English, with validation before any query runs. Daily client scrums. Angular, NestJS, PostgreSQL, Kafka, Redis, Docker Swarm. • 10,000 × 300-cell data grid rendered in under 2 s using PostgreSQL materialized views and frontend virtualisation. • Mentored new joiners and interns from day one — project structure, workflow, code reviews — until they could run without depending on me.

Software Engineer at Wisflux Tech Labs, Apr 2021 - Mar 2022 · 1 yr, Jaipur, • Disaster-response platform (architect; two developers implementing): a social platform for disaster zones where people post updates and ask for rescue over a local network from an edge device, with offline-first sync back to cloud via PostgreSQL pg_notify, Redis queues and heartbeat tracking. Built the AI/voice side in the browser: wake-word commands, voice messaging, voice calling with live transcripts, English/Japanese speech recognition on a self-hosted Whisper server, and Redis round-robin audio scheduling holding ~2–3 s latency on a lightweight GPU. React, Node.js, PostgreSQL, WebSockets, Redis, Python, Twilio, Docker. • Started the manufacturer line-execution build that I later led — user research with line operators, station UI design, SAP/Oracle sync. • Real-time typing trainer built from scratch (React, Next.js, NestJS, PostgreSQL, WebSockets, Nx monorepo): per-key analytics, session replay, lag-free input handling benchmarked against MonkeyType. • Song-request and tipping app for live performers, end to end in under three months (React, NestJS, PostgreSQL, Stripe). Promoted to Software Engineer during it.

Intern at Wisflux Tech Labs, Jun 2019 - Apr 2021 · 1 yr 11 mos, Greater Jaipur Area, • Event-management application: took solo ownership after onboarding; payment gateway integration and Azure face recognition. Used live at a client event. • Document-processing pipeline from an open-ended brief: evaluated Python page-layout models, selected one, and combined it with Azure OCR into a working workflow. • Open source (2020): co-built ODS Command Center with Sachin Upmanyu — a React/Node GUI over sfcc-ci for managing Salesforce B2C Commerce on-demand sandboxes (start/stop/reset, bulk and scheduled operations, credit tracking). github.com/sachin-upmanyu/ods-command-center • Speaking: ran a masterclass on Responsive Web Design for 200+ participants at the IBM SkillsBuild Innovation Camp (CSRBOX, April 2021), plus a second webinar on web development. Wrote for the Wisflux engineering blog (JavaScript destructuring).

Education

B.TECH, Computer Science, rajasthan technical university

Public links

github: https://github.com/ksvkabra