Company Description:
Partap Singh and Sons (PSS), established in 1951, is a leading distributor of automobile spare parts across Western, Central, Northern, and Eastern India. The company partners with major manufacturers including TVS SFL, Tata Motors, Ashok Leyland, Mahindra & Mahindra, Force Motors, Maxion Wheels, Rane group companies, Schaeffler, and ZF Wabco, serving more than 18,000 customers across heavy, medium, car segments, and industrial fasteners. PSS also exports to multiple global markets. The organization aims to be the comprehensive solution provider for all aftermarket needs and relies on proprietary software to support its nationwide operational network. This focus on technology and innovation creates a dynamic setting for engineering talent looking to impact core business systems.

Role Description:
The Lead Software Engineer (ERP Modernisation) is a full-time, on-site role based in the Mumbai Metropolitan Region. The role involves leading the modernization of PSS’s proprietary ERP and related systems, including designing scalable architectures,



refactoring legacy components, and implementing secure, efficient back-end services.

Why this role exists:
Partap Singh & Sons has distributed automobile spare parts since 1951. Ninety-plus branches across twenty states. Authorised distributor for Bosch, ZF, Tata Motors, Mahindra and Ashok Leyland. Fourth-generation, family-run, and one of the larger independent distribution networks in the country.
For two decades the business has run on a VB.NET WinForms ERP: 1.24 million lines of code, 18 modules, 215 screens, 1,808 Crystal Reports, on a single SQL Server 2008 box.

We have started the development on the replacement.
PSS One is Python and React, developed in-house, with a /core rulebook of 122 money-checks and an MCP server so AI agents can operate the system directly rather than screen-scrape it. It has been reconciled against real production data: 630 invoices % accuracy, full-year double-entry i

📌 Lead Software Engineer (Mumbai)
🏢 PARTAP SINGH & SONS
📍 Mumbai