Sajeesh Kumar

Product Manager

Chennai, Tamil Nadu, India16 yrs 3 mos experience

Highly Stable

Key Highlights

17 years of experience in enterprise-scale applications.
Expertise in Java, Spring Boot, and Microservices architecture.
Proven ability to lead teams and mentor engineers.

Stackforce AI infers this person is a Fintech Backend Engineer specializing in Java and Microservices architecture.

Contact

Skills

Core Skills

Java DevelopmentMicroservicesTest AutomationTechnical Project LeadershipSoftware Development

Other Skills

PostgreSQLAmazon Web Services (AWS)Spring BootLeading Development TeamsApache KafkaMongoDBREST APIsMySQLKafkaCucumberBehavior-Driven Development (BDD)AWSJUnitDocker ProductsVersion Control

About

Lead/Senior Java Backend Engineer/Tech Lead with around 17 years of experience delivering enterprise-scale applications in fintech, payments, and telecom domains. Hands-on expertise in Java (8–17), Spring Boot, Microservices architecture, and AWS cloud solutions, with skills in Kafka, CI/CD, and API development. Strong background in test automation (JUnit, Cucumber, RestAssured, Postman) and performance testing (JMeter), with proven ability to reduce defects and accelerate release cycles. Experienced in leading teams, mentoring engineers, and collaborating across QA, DevOps, and product teams to deliver secure, scalable, and high-performing systems while continuing to contribute as an individual contributor in design and coding. My GitHub link: https://github.com/sreesajeesh

Experience

16 yrs 3 mos

Total Experience

2 yrs

Average Tenure

Current Experience

M2p fintech

Senior Java Consultant

Oct 2024 – May 2025 · 7 mos · Chennai, Tamil Nadu, India · Hybrid

● Developed core modules (Multi-Wallet Setup, ETB Account Workflow, Notification Engine, Alias Directory) for the Visapay product, onboarded 400 initial users during pilot launch in the Democratic Republic of Congo, establishing the foundation for broader market rollout.
● Built complex SQL queries and reporting logic to power transaction dashboards, enabling clear visibility for operations and compliance teams.
● Integrated microservices with Spring Boot, Keycloak (JWT-based authentication), and Kafka, ensuring secure and reliable transaction handling.
● Applied object-oriented design best practices to build maintainable, loosely coupled microservices, ensuring scalability and ease of future enhancements.
● Collaborated with the DevOps team to integrate services into existing CI/CD pipelines (GitHub Actions, ArgoCD) and deploy applications on Kubernetes pod servers, improving deployment consistency and reliability.
● Worked closely with QA and product teams using Postman to validate payment workflows and reduce defects before release.
● Used Prometheus and Grafana dashboards to monitor microservice health, Kafka consumer lag, and API performance, helping to identify issues early and support faster resolution during releases.
● Analysed and debugged application logs to identify root causes of failures, supporting quicker resolution of production and UAT issues.
● Worked in Agile environment, actively participating in sprint planning, daily stand-ups, retrospectives, and managing deliverables through Jira stories and sprints.

PostgreSQLAmazon Web Services (AWS)Spring BootLeading Development TeamsApache KafkaMongoDB+4

Infosys

Lead Consultant at Infosys

Jun 2023 – Nov 2023 · 5 mos · Chennai, Tamil Nadu, India · Remote

● Served as Test Lead on a payments migration project for the Australian client Telstra moving payment processing from daily flat files (~70K records/day) into a cloud-native solution on AWS.
● Designed test workflows for reconciliation, dispute handling, and costing report generation, improving financial data validation.
● Built and executed JUnit, RestAssured, and Cucumber BDD test suites to validate Spring Boot microservices and AWS data pipelines (Lambda, EC2, SQS, DynamoDB, RDS, Glue).
● Detected and helped resolve data integrity issues during migration, ensuring 100% accuracy of daily payment ingestion.
● Assisted developers in debugging and resolving backend issues, accelerating defect resolution and reducing QA turnaround time.
● Coordinated UAT with business teams, ensuring smooth production rollout and compliance with banking standards.
● Used Jira and Confluence to track defects and ensure full traceability of test coverage.

Amazon Web Services (AWS)CucumberTest AutomationJava DevelopmentBehavior-Driven Development (BDD)

Swirepay

Java Consultant

Nov 2019 – Jun 2023 · 3 yrs 7 mos · Greater Chennai Area · Hybrid

● Developed and maintained backend features for a multi-platform fintech application handling 50K+ monthly transactions across web and mobile platforms.
● Designed and implemented RESTful APIs with Spring Boot, enabling 99.9% uptime for integration with frontend and mobile teams.
● Built and optimized microservices (Spring Boot, Kafka, Docker) that scaled to support a 3x increase in user base during product growth.
● Implemented AWS Cognito + JWT authentication, reducing security vulnerabilities by 40% compared to legacy auth.
● Managed deployments via CI/CD pipelines in Jenkins and AWS services (EC2, RDS, S3), improving release frequency from monthly to weekly.
● Acted as Test Lead for backend services, leading a team of 3 QA engineers and owning automation strategy.
● Built Postman regression suites + JUnit automation, reducing manual regression effort by ~70%.
● Shortened release verification time by 30% through automated pipelines integrated with Jenkins.
● Reduced production defects by ~20% via early defect detection and higher test coverage.
● Partnered with developers to resolve API, Kafka, and AWS issues, cutting defect resolution time by ~25%

Docker ProductsVersion ControlSpring SecurityCode DesignTeam ManagementJUnit+40

Syntel

Technical Project Manager

Jan 2012 – Apr 2017 · 5 yrs 3 mos · Greater Chennai Area · On-site

● Managed 3–4 concurrent enterprise projects, including Process Automation for Chubb Insurance Europe, DevOps Automation for Windchill, Transport Management System, and Intellectual Property Governance Workflow.
● Led a team of 12+ engineers (Java, QA, DevOps) across distributed locations, ensuring delivery on time and within budget.
● Established Agile practices (Scrum, Jira) that improved sprint predictability and increased team velocity by ~25%.
● Oversaw end-to-end SDLC (requirements, development, QA, UAT, production rollout), ensuring 95%+ on-time delivery across projects.
● Improved quality by introducing TDD practices, reducing post-release defects by ~30%.
● Acted as client-facing liaison, translating business needs into technical requirements and securing sign-offs for high-value features.

Version ControlCode DesignTechnical Project LeadershipTeam ManagementJUnitTechnical Requirements+27