Santhosh Kumar A L | Java Backend Developer

About

I'm an experienced Java Backend Developer with 3+ years of expertise in building distributed systems, REST‑like APIs, and fintech solutions. Skilled in Microservices, SOLID principles, and design patterns. Proficient in leveraging GitHub Copilot and AI tooling to accelerate development and improve code quality.

3+ Years Experience

Building scalable backend systems and fintech solutions

Clean Code Advocate

SOLID principles, design patterns, and test-driven development

Production Ready

Focus on reliability, performance, and comprehensive testing

AI-Powered Development

Leveraging GitHub Copilot and AI tools for faster delivery

Experience

M2P Fintech — Chennai

Sep 2024

Project: Credit Card Management System (CCMS)

Developed microservices for Credit Card workflows (registration, CardControls, EMI, DPD) across tenants.
Production analysis & fixes for API timeouts, memory issues, configuration errors; ensured stability.
Architecture decisions & fixes documented in Confluence for strong knowledge continuity.
API performance dashboards tuned for high availability in staging & production.
Refactored tenant‑specific configuration to enhance multi‑client maintainability.
Scalable regression framework with zero duplication → maintenance effort reduced by 40%.
For V2 worked on regression for automation framework with playwright to exchange fast execution of regression using AI innovations.

Market Simplified India Pvt Ltd — Chennai

Feb 2022 – Aug 2024

Project: AngelOne Smart‑API

Developed and maintained Smart‑API, a core product of Angel One. Created and managed REST‑like HTTP APIs essential for the stock market investment and trading platform.
Integrated multiple API connections, customizing to client needs, enhancing data accessibility. Designed and executed thorough Mockito test suites ensuring robust functionality.
Implemented Grafana monitoring alerts for real‑time visibility into endpoint performance and availability. Established response time thresholds and error rates for swift issue identification.
Provided 24/7 on‑call support, resolving critical issues quickly. Monitored systems, diagnosed problems, and reduced downtime. Collaborated with teams to resolve technical issues and improve customer satisfaction. Documented incidents and contributed to process improvements.

Market Simplified India Pvt Ltd — Chennai

Karur Vysya Bank (KVB)

Project: Dlite AOS

Led the development and maintenance of Dlite AOS software. Implemented a system to enforce explicit customer consent for new communication addresses, ensuring secure storage and compliance with data privacy standards.
Enhanced onboarding by prompting customers to deposit a minimum amount upon successful account creation, aligning with product‑specific deposit criteria. Implemented automated tests, reducing software defects by 30%, ensuring 99.9% reliability and performance of Dlite AOS software.

Market Simplified India Pvt Ltd — Chennai

Globe Capital Market Ltd

Project: API Integration & SIP Enhancement

Integrated APIs for mutual fund, stock market, and order management modules, ensuring smooth data transitions and reducing errors by 30%.
Enhanced SIP (Systematic Investment Plan) structures to support multiple investment frequencies, while fixing system bugs and improving user experience (10% increase in satisfaction).

Projects

Credit Card Management System (CCMS)

Multi‑tenant platform for banking workflows (registration, EMI, DPD) with strong observability and performance.

Java
Spring Boot
Microservices
MySQL
Kafka
Grafana

Smart‑API (Angel One)

Core trading/investment APIs; latency‑aware endpoints, rigorous monitoring and testing.

Java
Spring Boot
REST API
Mockito
Grafana

Dlite AOS

Secure onboarding, consent & compliance; reliability focus and automated QA.

Java
Spring Boot
Automation
MySQL

Skills

Languages & Frameworks

Core Java
Spring Boot
Hibernate
JUnit
Playwright

Technologies

Microservices
MySQL
Kafka
REST API
ArgoCD
Grafana

Tools

IntelliJ IDEA
VS Code
GitHub
Postman
DBeaver
Jira
Confluence

Soft Skills

Communication
Problem‑Solving
Analytical Skills
Team Coordination
Technical Troubleshooting

AI Innovation

Copilot‑Accelerated Delivery

Used GitHub Copilot to scaffold microservices, write tests, and generate documentation. Reduced development cycles and improved code quality through inline suggestions and prompt engineering.

Regression Automation

Designed a reusable Playwright/JUnit test harness with zero duplication across tenants, improving readability and cutting maintenance by 40%.

Observability & Anomaly Detection

Grafana dashboards and alerts on latency/error budgets; proactive issue resolution in staging & production. Future work: anomaly detection on time‑series metrics.

Secure Onboarding Flows

Consent‑driven address updates and deposit flows with robust API integration to ensure compliance and reliability.

Education

Master of Computer Applications (MCA)

Vellore Institute of Technology, Vellore

GPA: 8.45

Bachelor of Computer Science

Vellore Institute of Technology, Vellore

GPA: 8.65

Get in touch

Prefer email or LinkedIn and I'll reply within 24 hours.

Email

santhoshanbu092@gmail.com

LinkedIn

santhosh-kumar-a-l

Hi, I'm Santhosh Kumar A L

About

3+ Years Experience

Clean Code Advocate

Production Ready

AI-Powered Development

Experience

Projects

Credit Card Management System (CCMS)

Smart‑API (Angel One)

Dlite AOS

Skills

Languages & Frameworks

Technologies

Tools

Soft Skills

AI Innovation

Copilot‑Accelerated Delivery

Regression Automation

Observability & Anomaly Detection

Secure Onboarding Flows

Education

Master of Computer Applications (MCA)

Bachelor of Computer Science

Get in touch