Avnish Kumar

About Avnish Kumar

Software Engineer specializing in building scalable, production-grade multi-tenant SaaS and ERP platforms.At Tryidol Technologies I architected ERP application, a full multi-tenant ERP with HRMS, Payroll (Indian PF, ESI, PT, TDS compliance), Project Management, Billing, Drive, Chat and Approval modules. I designed a 2,200+ LOC payroll engine with pro-rated calculations, tax slabs and event-driven workflows, plus 120+ MySQL models using Sequelize with strict tenant isolation, soft deletes and indexing strategies.Technical contributions include:BullMQ + Redis for distributed job processing (millions of jobs)Socket.IO real-time chatDual JWT + RBAC authenticationAWS S3 file handlingCustom EventBus for decoupled modulesC++ native Node.js addons for high-performance XML feed processingCore Web VitalsWebpack, Vite, ESBuild, JestAWS EC2, S3, Cloufront, Route53, IAMCloudflare R2, Cloudflare WorkersI combine deep backend architecture skills with clean modular code (Controllers → Services → Models) and real-world compliance knowledge that AI systems cannot fully replicate. My work focuses on system design decisions, performance at scale, security patterns and cross-team collaboration on live production systems.#NodeJS #BackendEngineer #SaaS

Experience

1. Software Engineer

   Tryidol Technologies

   Oct 2025 — Present · Bhopal, IN

   Architected ERP, a production multi-tenant SaaS ERP platform featuring HRMS, Payroll, PMS, Chat, Drive, Billing and Approval modules with strict tenant isolation.Designed and implemented a 2,200+ LOC payroll engine supporting full Indian statutory compliance (PF, ESI, PT, TDS), pro-rated salaries, tax slabs and event-driven approval workflows.Engineered core backend using Express.js (ES modules), Sequelize ORM on MySQL (120+ relational models), BullMQ + Redis for background jobs, Socket.IO real-time features and AWS S3 storage.Implemented organization-level RBAC, dual JWT authentication, custom AppError handling, Joi validation middleware and EventBus for cross-module communication.Developed high-throughput distributed job processing system and C++ native Node.js addons (libcurl, zlib, expat) during internship phase.

Education

• Ganga Uacch Madhyamik Vidyalaya

  Intermediate

  2017 — 2019

• Gyan Ganga Institute of Technology Sciences

  Bachelor of Technology - BTech, Computer Science and Engineering