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Arnab Gupta

@arnabgupta2

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Senior backend and cloud-native engineer building scalable microservices and AI-ready systems.

India

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What I'm looking for

I’m looking for a backend/cloud-native role to build scalable microservices, improve reliability and performance, and own Kubernetes/AWS CI/CD workflows—while integrating AI to create robust, efficient systems.

I’m a Senior Software Engineer focused on backend and cloud-native systems. I’ve built and deployed scalable microservices with Spring Boot and FastAPI, and I bring strong expertise in AWS and Kubernetes, plus CI/CD optimization for reliability and performance.

At Gupshup, I designed and deployed a centralized cache API supporting 50,000+ requests per second, migrated services from EC2 to Kubernetes (34.5 crore hits/day at peak), and built a prioritisation framework with a custom Redis module in C and Rust (28,000–77,000 TPS). I also modernized testing (to 80% coverage) and improved deployment speed (startup from 1 minute to 14 seconds), while working on ML-driven API automation for KYC workflows at Airtel Africa Digital Labs.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Gupshup

Nov 2023 - Present (2 years 8 months)

Developed MSPS to dynamically scale bandwidth/thread assignments for incoming and outgoing traffic. Built and migrated a centralized cache API and a prioritization framework to improve throughput and reliability, and overhauled CI/CD and load testing infrastructure.

Java Spring Boot C Redis Redis Module APIs Gitlab Kubernetes Docker CI CD JMeter Caching Load Testing Performance Optimization Microservices

Senior Software Engineer

Airtel Africa Digital Labs

Jul 2022 - Oct 2023 (1 year 3 months)

Built a facial comparison API using ML models to semi-automate KYC workflows and scaled it to support high request volumes. Optimized ETL workflows and developed a KPI engine for automated report generation, while strengthening CI/CD pipelines for deployment.

Java Spring Boot Jenkins fastAPI Python Trino HDFS Kubernetes Docker Machine Learning ETL Spark CI CD API Development

Software Engineer

Airtel Africa Digital Labs

Dec 2020 - Jun 2022 (1 year 6 months)

Developed scalable APIs and API aggregators and transitioned a monolithic rule engine to a microservice architecture to improve scalability and maintainability. Optimized query performance to reduce API response times and built a fraud management system for near-real-time anomaly detection triggers.

Spring Boot API Development Microservices Query Optimization Performance Optimization Black Box Testing Fraud Detection

Software Engineer

Tracxn Technologies

May 2020 - Oct 2020 (5 months)

Enhanced existing Search APIs to expose new dashboard features and improve usability and feature stability. Built loader classes to migrate configurations to MongoDB for dynamic job configuration via dashboards.

Spring Boot Elasticsearch MongoDB

Associate Software Engineer

Quikr India Private Limited

Jul 2019 - May 2020 (10 months)

Developed browser campaign support for internal campaign tools and implemented dynamic query generation for campaign segmentation. Enhanced SMS campaign and alert services to improve targeting and operational efficiency.

Java Spring Boot C MySQL Google BigQuery API Development

Software Engineer Intern

Quikr

Oct 2018 - Jun 2019 (8 months)

Orchestrated ETL workflows using Airflow to generate CSV reports from BigQuery and upload them to external vendor SFTP locations. Built an ETL pipeline from BigQuery to Amazon S3 and automated deployment processes using Ansible scripts.