Programming Languages
Java
Backend-First Engineering
Kaustabh Adak
Senior Software Analyst
Senior Software Analyst with 4.8 years of experience engineering scalable microservices in Java/Spring Boot. I focus on high-throughput distributed systems, Kafka-driven event pipelines, and backend performance optimization for large-scale enterprise platforms.
$ architecture --profile production > distributed-services: enabled > throughput-target: 50k req/min > p99-latency budget: <120ms
Skills
Backend engineering stack organized by language, framework, data, tools, and platform capabilities.
Frameworks / Library
Spring Boot
Kafka
Zookeeper
Redis Cache
Ehcache
Maven
JUnit
SLF4J
Lombok
JJWT
Spring Security
Web Technologies
HTML5
CSS3
JavaScript
RESTful Web Services
Databases
MySQL
Cosmos DB
Oracle DB
PostgreSQL
VCS / Tools
Git
Jira
Bitbucket
GitHub
SonarQube
Cloud / DevOps
Google Cloud Platform (GCP)
Docker
Rancher
Enterprise Impact Highlights
Company-delivered case studies focused on architectural decisions and measurable performance impact.
High-Volume Kafka Product Change Pipeline
EnterpriseProblem: Product change events needed reliable cross-service propagation at enterprise scale. Solution: Built Spring Boot producers/consumers on Confluent Kafka with idempotent processing, retries, and operational monitoring across distributed services.
Technical Impact: Handled ~400K messages/day
Low-Latency Cache-Optimized Read Path
EnterpriseProblem: Real-time APIs were bottlenecked by heavy synchronous processing and database reads. Solution: Shifted workloads to asynchronous batch jobs and served cache-backed data for critical read paths.
Technical Impact: Reduced p95 from ~10s to sub-ms
Secure Knowledge Management Platform
EnterpriseProblem: Enterprise document operations required auditable, secure, and scalable version control. Solution: Developed a PostgreSQL metadata/versioning backend over GCP Cloud Storage with OAuth2/JWT RBAC and UUID-based request traceability.
Technical Impact: Supported 10GB+ daily file ops
Personal Projects
Public work with repository and live website links when available.
Distributed API Benchmark Dashboard (Demo)
PersonalA demo full-stack project for benchmarking microservice endpoints with load profiles, response-time visualizations, and health snapshots to simulate production-style backend observability.
Technical Impact: Analyzed 50K+ synthetic requests
Professional Experience
Software Development Senior Analyst
Accenture - Bangalore, Karnataka
Nov 2024 - Present
- Worked on a large-scale Spring Boot microservices ecosystem (20+ services), owning bug fixes and feature development in production systems using Couchbase and Ehcache, with observability and operations supported via Dynatrace, Kibana and Rancher.
- Built backend services for a browser extension delivering LLM-generated product insights to 200+ analysts.
- Built a knowledge management platform handling 10GB+ daily file operations for 500+ users, implementing a PostgreSQL-backed file versioning system to track metadata and history for files stored in GCP Cloud Storage.
- Implemented OAuth2/JWT-based authentication with RBAC supporting 500+ concurrent users, introducing UUID-based request tracking to strengthen auditability and prevent unauthorized access.
Senior Systems Engineer
Infosys - Bhubaneswar, Odisha
Oct 2023 - Oct 2024
- Developed Spring Boot microservices from scratch to consume and produce product change events on Confluent Kafka, exposing APIs for downstream consumers. Implemented idempotent processing, retry logic, and monitoring to ensure reliable event delivery for 400K messages/day across 12 microservices.
- Improved API responsiveness by offloading heavy processing to asynchronous batch jobs and serving cache-backed reads, reducing read-path p95 latency from 10s to sub-ms for real-time requests.
- Developed Cosmos DB exception handler isolating corrupted records, preventing job failures and enabling uninterrupted processing of 10K+ records per day.
Systems Engineer
Infosys - Bhubaneswar, Odisha
Oct 2021 - Sep 2023
- Implemented an Eloqua-based email notification system, designing backend flows and ensuring reliable email delivery across multiple enterprise applications.
- Implemented OTP-based Two-Factor Authentication (2FA) for a global enterprise login page, replacing legacy link-based email validation. Improved authentication speed and reliability for a large, global user base, integrating with an existing PingFederate backend service.
- Increased JUnit/Mockito test coverage from 60% to 85%, enabling early detection of regressions and improving release stability.
- Developed Spring Boot microservices for a global user dashboard and login system, serving 100K+ users across 12 countries, supporting multi-currency transactions, order management, and multi-language localization.
Trainee Embedded Engineer
Mozi Tronics - Hindmotor, West Bengal
Mar 2021 - Jun 2021
- Developed and tested firmware enhancements for industrial automation controllers used in FMCG production environments, focusing on embedded C programming and hardware-software integration.
- Programmed HMI interfaces and contributed to embedded firmware development for industrial controllers, gaining hands-on experience with microcontrollers, sensors, and automation systems.