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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