Software Engineer @ BUSINESSNEXT

Sachin Kumar

Architecting High-Scale Enterprise Applications & APIs

Full-Stack Software Engineer with 3+ years of experience specializing in the .NET ecosystem, microservices, and modern frontend frameworks (React, Angular 16). I build high-availability CRM platforms and secure cloud integrations.

About Me

A brief look into my background, core values, and approach to development.

Sachin Kumar Portrait

I am a full-stack engineer who thrives on solving complex architectural challenges and optimizing database performance. Operating within the enterprise CRM space at BUSINESSNEXT, I design and scale systems that handle millions of customer records using C#, .NET Core, and React. My approach centers on writing clean, testable code, optimizing SQL queries, and bridging the gap between back-end reliability and polished front-end user experiences. Unlike traditional backend-focused .NET developers, I am equally comfortable building responsive React/Angular UIs as I am profiling API bottlenecks or managing Azure workflows.

3+
Years Exp
1320
LeetCode Rating
7.5
B.Tech CGPA
Noida
Location

Tech Stack

Structured categories representing my technical capabilities and proficiency levels.

Backend & Core

High-concurrency architecture, RESTful API design, custom middleware, and authentication.

C# .NET Core ASP.NET MVC Web API

Modern Frontend

Responsive client application state management, component lifecycles, and scalable structures.

React Angular 16 TypeScript JavaScript (ES6+) HTML5 & CSS3

Databases & Storage

Query tuning, schema design, advanced partitioning, indexing, and store optimization.

MS SQL Server PostgreSQL Oracle

DevOps & Tools

Automated deployment, system debuggers, package configurations, and version control.

Azure TFS Git Visual Studio VS Code C/C++

My Career Story

A timeline of my professional growth, academic milestones, and shifting engineering milestones.

Software Engineer @ BUSINESSNEXT

2023 - Present
Noida, India | Enterprise CRM Solutions

Transitioned into building enterprise-scale CRM suites handling high transactional load. I lead backend performance optimization initiatives, focusing on profiling database schemas and building high-performance REST APIs.

Own major features in both ASP.NET Core and client SPA frameworks (React/Angular 16), ensuring high code reliability, structured pipelines, and robust authorization controls.

Transitioning to Full-Stack Development

2022 - 2023
Personal Milestones & Practical Applications

Recognized my interest in developing scalable, user-facing applications. Transitioned focus toward the .NET core platform and modern frontend tools.

Successfully built a comprehensive e-commerce engine (ElectroZone) using JWT security patterns, state workflows, and PostgreSQL, alongside location-focused Angular weather analytics platforms.

B.Tech in Computer Science

2019 - 2023
Hi-Tech Institute of Engineering and Technology | CGPA: 7.5

Laid academic groundwork in algorithms, database normalization systems, and object-oriented architectures.

Spent substantial time honing algorithmic problem-solving skills, achieving a competitive rating of 1320 on LeetCode and resolving complex optimization problems in C++.

Featured Projects

Commercial platform development, service components, and personal full-stack projects.

Enterprise Service

CRMNEXT Platform

A multi-tenant enterprise CRM solution powering major banking and financial services. Designed to manage complex customer workflows, transactions, and real-time records.

  • Optimized SQL indexing, decreasing query execution times by 30%.
  • Created dashboard widgets in React/Angular 16 to improve user navigation flows.
  • Built secure RESTful controllers handling third-party integrations and custom middleware.
C# .NET Core React Angular MS SQL
Support Platform

ISY Project

An internal ticketing and automated workflow management system engineered to enforce Support SLA timelines and escalation conditions.

  • Programmed the core escalation workflow engine, cutting ticket latency by 25%.
  • Optimized backend log scanning algorithms to search historical metrics in milliseconds.
  • Developed scalable Web API integrations connecting support logs to corporate chat feeds.
C# Web API MS SQL Azure TFS
E-Commerce System

ElectroZone

A high-performance storefront project showcasing modern application architectures, checkout procedures, and component security.

  • Integrated secure state storage with JWT tokens and encrypted HTTP cookie handshakes.
  • Wrote responsive interface schemas using Redux Toolkit to capture catalog carts.
  • Developed complex dynamic catalog filtering and pagination API queries.
ASP.NET Core React Redux PostgreSQL
Data Application

Weather Forecast App

A lightweight client platform offering live weather metrics, comparisons, and custom tracking.

  • Constructed local storage cache loops, eliminating redundant API requests by 40%.
  • Integrated browser geolocation queries to load localized conditions automatically.
  • Used Chart.js integrations to display interactive 7-day predictive temperature lines.
Angular 16 TypeScript REST API Chart.js

Contact Me

Let's discuss professional opportunities, custom projects, or system optimizations.

For Recruiters & Hiring Managers

Looking for a full-stack engineer who can write performant C# APIs, profile complex SQL queries, and build polished SPA components? Let's discuss how my experience can accelerate your product lifecycle.

Download Resume

For Clients & Consultants

Need to build a robust custom application or optimize an existing platform experiencing database bottle-necks? I specialize in delivering scalable backend architectures and clean frontend designs.

Noida, India (NCR)

+91 8383822591