KOUSHIK HALDER

[email protected] 7872432280 Bengaluru, India
LinkedIn: https://www.linkedin.com/in/iamkoushik98/ GitHub: https://github.com/cxviii4

PROFESSIONAL SUMMARY

Accomplished Full-stack developer with 3+ years of experience building scalable web apps using ASP.NET Core, EF Core, and SQL Server, with frontend expertise in ReactJS. Skilled in integrating stored procedures, handling output parameters via ADO.NET, and implementing robust error handling across service and repo layers. Passionate about delivering maintainable solutions that align with business goals.

WORK EXPERIENCE

Software Developer
01/2022 - Present
HCLTech (Client: Caterpillar) , Bengaluru, India
Developed and maintained Tier 1–3 enterprise applications for Caterpillar’s internal operations, focusing on backend architecture and data integrity
Integrated stored procedures using EF Core and ADO.NET, including output parameter handling and scalar returns for status codes and business logic
Refactored Razor views and controller flows to streamline user interactions, improve redirection logic, and support edit workflows
Implemented defensive input validation and exception handling across service and repository layers to capture exceptions globally and ensure production reliability
Contributed to frontend enhancements using ReactJS, improving user experience and responsiveness in internal application of Caterpillar

EDUCATION

Bachelor in Computer Application
01/2019
MAKAUT University , Kolkata, India
Masters in Computer Science
01/2021
MAKAUT University , Kolkata, India

SKILLS

PROJECTS

BPIS – Brazilian parts invoicing system [Caterpillar Project Tier 1]
Technologies: Stored Procedures, DTO Mapping, HTML, CSS, Bootstrap, Repository pattern
Conversion of Inline queries to scalable Stored Procedure handling business operation by ensuring security like prevention of SQL Injection and makes the execution fast
Refactored service and repository layers with DTO mapping to support scalable architecture
Handled the designed of all pages using. cshtml files by applying HTML, CSS, Bootstrap
Applied global exception handling middleware to capture exception globally despite writing traditional try-catch block in every repository
Used Repository pattern to interact with database, hence give an abstraction over business layer
Performed functional testing
Hotdesk – Desk booking app [Caterpillar Project Tier 1]
Technologies: React JS, HTML, CSS, Bootstrap, C#, EF Core, SQL, Stored Procedures
Worked on application functionality on React JS, HTML, CSS, Bootstrap etc
Used C#, Ef Core in backend
Wrote queries to insert seats in SQL, also worked on stored procedure to make the booking, rescheduling, deletion of seats and checking out of seats
Carried out functional testing
KEDB – Known Error Database [Caterpillar Project Tier 3]
Technologies: React JS, CSS, HTML
Contributed towards the enhancement of KEDB application by using React js, css, html and make the site responsive
Executed functional testing, identified application bugs, proposed solution for the bugs and fixed bugs ensuring client requirements achieved
Identified critical production issue causing application to crash, and given solution that makes the app working flawlessly till now
FC Weather – Weather app [Personal project]
Technologies: React JS, HTML, CSS, Bootstrap, APIs
It’s my personal project created by using React JS, HTML, CSS, Bootstrap
Integration of 5 API from searching location name to getting lat and lon of specific location, followed by fetching weather details including max and min temperature for next 5 days. Additionally added API’s for getting AQI info as well
Make this app responsive for mobile

ACHIEVEMENTS

Guided and trained freshers in C# and React JS breaking down concepts to build their technical skills and prepare them for client projects.

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