Hi there 👋, I'm Ajay
Backend Engineer with around 5 years of experience building scalable, cloud-native microservices and distributed systems using Java, Python, and PHP.
I specialize in high-performance backend systems, asynchronous processing, and event-driven architectures using Kafka, AWS, and Elasticsearch.
Currently working at SHL India Pvt. Ltd, delivering production-grade systems that improve performance, scalability, and cost efficiency.
Languages
- Java, Python, PHP
Frameworks
- Spring Boot, Spring Security, Spring MVC, Hibernate
- Flask, FastAPI
Cloud & DevOps
- AWS (ECS, ECR, SQS, AppConfig)
- Docker, Bamboo, Git
- Apache Kafka
Databases
- MySQL, SQL Server
- Aerospike, Elasticsearch
Senior Software Engineer — SHL India Pvt. Ltd (Feb 2026 – Present)
- Leading and mentoring 4 backend developers to build scalable backend delivery platform.
Software Engineer — SHL India Pvt. Ltd (Jul 2023 – Jan 2026)
- Reduced API response time by 30% using caching (Memcached / Redis)
- Designed asynchronous scoring microservices (Java & Python) cutting processing time by 67%
- Built Kafka-based centralized logging pipeline, reducing infra cost by 23%
- Scaled Python services to handle 100 concurrent requests in under 2 seconds
Associate Software Engineer — SHL India Pvt. Ltd (Jun 2021 – Jun 2023)
- Implemented JWT-based authentication for secure APIs
- Built CI/CD pipelines (Bamboo) reducing release cycles by 30%
- Migrated 10M+ records using multithreaded Python pipelines
- Dockerized applications and deployed on AWS ECS
Inventory Management System
- JWT-based authentication
- Elasticsearch-powered search
- MySQL + NoSQL integration
- Built using Spring Boot & Spring Security
Sustained Attention Detection (Research)
- EEG signal processing using MNE Python
- Feature extraction using FFT
- Neural network models with Keras
- Published on IEEE Xplore
🔗 https://ieeexplore.ieee.org/document/9752135
- Backend Engineering roles (Java / Python)
- Distributed systems & microservices
- High-scale backend & system design discussions
📫 Reach me at
- LinkedIn: https://www.linkedin.com/in/ajay-arora-b082651a6/
- Email: aroraajay0511@gmail.com