Open to Work

Ashwin K

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4+ years building scalable backend systems across CRM, FinTech, Healthcare & Data Engineering

View My Projects
4+
Years Experience
4
Projects
3
Clients
10+
Technologies
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About Me

4+
Years
4
Projects
3
Clients
10+
Tech Stack
Emailashwin23021999@gmail.com
LocationTamilnadu, India
Phone+91 75020 99384

Results-driven Java Developer with 4+ years of experience building scalable, secure, and high-performance backend applications using Java, Spring Boot, and Microservices Architecture.

Delivered production-grade systems across Enterprise CRM, FinTech, Healthcare, and Data Engineering domains.

Expertise in REST API design, multi-region distributed systems, event-driven architecture, and full-stack observability.

Proven ability to work in cross-functional Agile/Scrum teams of 10+ members, consistently delivering high-quality backend solutions on time and within scope.

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Technical Skills

Comprehensive expertise across the full Java ecosystem and modern backend technologies

Core

JavaJava 8 StreamsLambdasFunctional InterfacesCollectionsCompletableFutureOptional

Backend Frameworks

Spring BootSpring MVCSpring CloudSpring SecuritySpring Cloud GatewaySpring Boot Actuator

Microservices & Integration

Microservices ArchitectureREST APIWebClientService DiscoveryAPI GatewayLoad Balancing

Messaging & Async

RabbitMQ (RPC & Pub/Sub)Event-Driven ArchitectureCron SchedulersAsynchronous Programming

ORM & Persistence

JPAHibernateHibernate EnversJAXBPaginationQuery OptimizationIndexing

Security

JWTOAuth2Keycloak (SSO, OIDC)CasbinRole-Based Access Control (RBAC)

Databases

MySQLPostgreSQLMSSQLMongoDBRedis (Caching & Session)

Observability

ELK StackElasticsearchLogstashKibanaFilebeatPrometheusGrafanaDistributed Logging

DevOps & Testing

DockerGitHubGitLabCI/CD PipelinesJUnitPostmanSwagger / OpenAPI 3.0

Work Experience

Current Role

Java Developer

Dorustree Private Limited
Trichy, Tamilnadu, India
Nov 2021 – Present
4+ Yearsof Professional Experience

Key Responsibilities

  • Designed, developed, and maintained scalable backend microservices using Java and Spring Boot for enterprise clients across CRM, FinTech, Healthcare, and Data Engineering domains.
  • Collaborated in Agile/Scrum sprints with frontend developers, QA engineers, and business analysts.
  • Designed and implemented secure RESTful APIs with Swagger/OpenAPI documentation and JWT, OAuth2, Keycloak authentication.
  • Built event-driven inter-service communication using RabbitMQ (RPC and Pub/Sub patterns).
  • Configured observability infrastructure using ELK Stack, Prometheus, and Grafana for real-time production health tracking.
  • Worked across MySQL, PostgreSQL, MSSQL, MongoDB, and Redis — designing schemas, optimizing queries, and implementing caching strategies.
  • Containerized applications using Docker and managed CI/CD pipelines via GitHub and GitLab.

Technologies Used

JavaSpring BootMicroservicesRabbitMQPostgreSQLRedisDockerELK Stack

Featured Projects

Production-grade systems delivered across multiple enterprise domains

LatestEnterprise

Customer Relationship Management (CRM)

Enterprise SaaS

1 Year 8 Months
Delta Electronics India Private Limited
30-40% API Speed Boost
Built a multi-region CRM (India, EMEA, Taiwan) with RabbitMQ RPC Region Router — single source of truth across 3 geographies
Reduced API response time by 30-40% using CompletableFuture async orchestration
Bulk CSV Import & Export processing 1,000–10,000 records per operation
JWT + Casbin RBAC with Redis distributed session management

Tech Stack

JavaSpring BootMicroservicesRabbitMQ (RPC)WebClientJWTCasbinRedis+3 more
FinTech

Card Management System (CMS)

FinTech Domain

1 Year 1 Month
M2P Solutions Private Limited
100% Data Traceability
Microservices-based FinTech platform for full card lifecycle supporting thousands of active transactions
Keycloak (OAuth2/OIDC/SSO) for enterprise identity management
ELK Stack for centralized log aggregation and real-time observability
Hibernate Envers for 100% data traceability and regulatory compliance

Tech Stack

JavaSpring BootMicroservicesHibernate EnversJPAPostgreSQLKeycloakElasticsearch+4 more
Healthcare

Patient-Care Application

Healthcare Domain

8 Months
Dorustree Private Limited (Internal)
Real-time SLA Monitoring
Healthcare REST API for patient registration, doctor management, appointment scheduling, and medical records
Role-based access for Doctors, Patients, and Hospital Owners
Prometheus & Grafana for real-time SLA monitoring
Spring Boot Actuator for live health checks

Tech Stack

JavaSpring BootHibernateJPAREST APIMySQLJWTSpring Boot Actuator+3 more
Data Engineering

ETL Data Pipeline

Data Engineering Domain

11 Months
Dorustree Private Limited (Internal)
100% Automation
Automated ETL pipeline processing 1,000–10,000 XML records daily
RabbitMQ message-driven inter-service communication
Eliminated 100% of manual daily data ingestion via Cron Scheduler automation

Tech Stack

JavaSpring BootMicroservicesRabbitMQJAXBHibernateJPASFTP (OpenSSH)+3 more

Education

M.Sc. Mathematics

Jamal Mohamed College, Trichy

Jun 2019 – Mar 2021
72%

B.Sc. Mathematics

Jamal Mohamed College, Trichy

Jun 2016 – Mar 2019
69%

Let's Build Something Great Together

I'm open to new opportunities and would love to discuss how I can contribute to your team

Email

ashwin23021999@gmail.com

LinkedIn

ashwin-kanagarathinam

Phone

+91 75020 99384

Available for Work

Currently open to new backend development opportunities