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LALIT KUMAR JANGIR

@lalitkumarjangir

Software Development Engineer I at Stashfin who cut REST API response times from about 2s to 250ms.

At Stashfin, I optimized backend REST APIs through query tuning and code refactoring, reducing average response time from about 2s to 250ms. I also architected a rule-based deduplication pipeline that processed more than 100,000 records and automated duplicate detection and logging.

As the sole service owner for partner integrations, I handled integrations, production releases, incident resolution, and service reliability. Previously, at Airtel, I built a modular document management system with Spring Boot REST APIs and improved file processing efficiency.

Experience

Work history, roles, and key accomplishments

Current

Software Development Engineer I

Current

Stashfin

Jun 2025 - Present (1 year 3 months)

Architected a rule-based deduplication pipeline for inconsistent customer keys, processing 100,000+ records. Owned end-to-end partner integration lifecycle and led migration of CleverTap integration across 5 microservices.

NodeJS TypeScript MySQL REST APIs Redis gRPC RabbitMQ Docker

Software Development Engineer Intern

Airtel

May 2024 - Jul 2024 (2 months)

Built a modular document management system with Spring Boot REST APIs. Streamlined file upload and processing workflows, reducing server load by 30% and improving system stability.

Java Spring Boot MySQL REST APIs

Full-Stack Developer

Concept Talk JEE

Jan 2024 - Apr 2024 (3 months)

Developed a full-stack counselling platform with role-based access control and secure authentication. Integrated Razorpay, Twilio, and SMTP-based email workflows.

Java Spring Boot JPA Elasticsearch AWS RDS

Education

Degrees, certifications, and relevant coursework

National Institute of Technology, Agartala

Bachelor of Technology, Computer Science and Engineering

2021 - 2025

Grade: 8.52 CGPA

Activities and societies: Member, Developers and Coders Club, NIT-A: Contributed to the organization and execution of coding competitions and workshops, fostering development skills and knowledge among students.

Pursued a Bachelor of Technology in Computer Science and Engineering, achieving a CGPA of 8.52.