Stack Developer Senior Java

Java Full Stack Developer

Summary:

Experience:

Versatile and performance-driven Senior Java Full Stack Developer with 5+ years of experience in architecting, developing, and deploying scalable enterprise-grade applications across finance, insurance, and technology domains. Demonstrated expertise in designing cloud-native microservices, building responsive front-end interfaces using Angular and React, and implementing robust CI/CD pipelines to enable accelerated and reliable software releases. Strong foundation in Spring Boot, RESTful APIs, PostgreSQL, and caching technologies such as Redis and Ehcache. Highly proficient in cloud platforms including AWS and GCP, with hands-on experience in Kubernetes and Docker for containerized deployments. Skilled in leading cross-functional Agile teams, enforcing coding standards, and delivering secure, maintainable, and high-quality code. Recognized for optimizing system performance, minimizing deployment friction, and scaling applications to support millions of users with low latency and high resilience.

Developed and deployed scalable microservices using Java 11+, Spring Boot, and RESTful APIs for high-volume financial systems, enabling low-latency responses under peak loads.

Reengineered authentication workflows using Spring Security, JWT, and OAuth2, reducing onboarding time by 30% and increasing delivery velocity across three Agile teams.

Built a reusable component library in Angular 14 and React, accelerating UI development by 40% and enabling faster triage of 25+ production UI defects.

Integrated AWS services including EC2, S3, RDS, and IAM to support cloud-native deployments with high availability and disaster recovery readiness. Containerized 10+ microservices using Docker, standardizing local development environments and reducing deployment-related bugs by 15%.

Established automated CI/CD pipelines with Jenkins and GitHub Actions, cutting manual effort by 70% and shifting release cadence from monthly to weekly.

Refined PostgreSQL indexes and query plans, decreasing query latency by 45% and supporting 20% growth in daily active users without performance degradation. Implemented a tiered caching strategy using Redis and Ehcache, reducing DB load and improving 90% of user response times, while eliminating 5 critical bottlenecks. Authored OpenAPI/Swagger specifications for RESTful APIs, standardizing data contracts and reducing integration bugs with external partners by 25%.

Documented core architecture and onboarding guides in Confluence, reducing new developer ramp-up time by 30% across five teams. Delivered critical hotfixes for 12 high-risk edge cases, reducing P1 incident frequency by 40% and improving system stability. Integrated Apache Kafka for distributed messaging across microservices, enabling scalable, event-driven architecture with near-real-time processing. Defined organization-wide coding standards and SonarQube enforcement rules, reducing code defects by 15% and improving maintainability metrics.

Directed migration to a new CI/CD pipeline architecture, reducing build times by 30% and cutting integration failures by 15%. Spearheaded 10+ internal tech talks and Confluence knowledge sessions, cultivating a learning culture and accelerating onboarding by 30%. Enabled service resilience by integrating Resilience4j circuit breakers and fallback mechanisms, ensuring fault-tolerant response during third-party outages.

Enhanced observability using centralized logging (ELK Stack) and distributed tracing (OpenTelemetry), significantly reducing MTTR for production issues.

***************@*****.*** +1-870-***-**** Sandeep_Linkedin Sandeep Vattem

Capital Group United States Sr. Java Full Stack Developer July 2024 – Present Assurant United States Full Stack Java Developer September 2023 – June 2024 Built responsive, intuitive frontend interfaces using HTML, CSS, JavaScript, Angular, React, and TypeScript, reducing UI-related support tickets by 40% within one quarter. Optimized SQL performance and database infrastructure across MySQL, PostgreSQL, and MongoDB, enabling the system to scale under a 70% increase in traffic volume. Integrated RESTful and SOAP APIs with JSON/XML formats for seamless, secure communication across distributed enterprise platforms. Automated CI/CD pipelines using Jenkins, GitHub, Maven, Docker, and Bitbucket, cutting delivery time by 40% and improving release confidence. Deployed scalable microservices on AWS and GCP, using EC2, S3, and Cloud Functions to maintain 99.99% uptime during high-traffic windows (5,000+ RPM).

Strengthened deployment reliability using Kubernetes orchestration, reducing deployment incidents by 30% and accelerating release cycles by 25%.

Ensured quality through unit and integration testing using JUnit, Mockito, and Postman, while implementing Log4j and Selenium for proactive debugging.

Achieved 85% code coverage through rigorous testing and integrated code validation into CI pipelines, improving code stability. Boosted system performance by tuning SQL queries, implementing caching strategies (Redis/memory cache), and conducting code refactoring for modularity and maintainability.

Tata Consultancy Services India Full Stack Java Developer August 2020 – August 2022 Designed a cohesive microservices architecture using Spring Boot and integrated 13+ internal/external APIs, improving application responsiveness by 40% and optimizing backend compute utilization. Modernized legacy systems by converting monolithic apps into Spring Cloud microservices using Netflix OSS, reducing downtime by 30% and accelerating deployment cycles by 40%.

Integrated RESTful APIs into the Angular front-end using reactive extensions, enhancing UI responsiveness and reducing end-to-end latency by 25% across account dashboards.

Overhauled server-side validation using Spring Boot annotations, boosting data accuracy and enabling real-time access to critical reporting data.

Delivered critical database upgrades on MySQL and PostgreSQL, implementing stored procedures and index optimization to improve transaction throughput by 35%.

Configured Jenkins pipelines, Docker containers, and Maven for end-to-end builds, leading to a 95% reduction in update-related errors as the primary owner of CI processes.

Automated API testing using Postman and Newman CLI in CI/CD workflows, proactively identifying and fixing 15 critical bugs before production and improving test coverage by 40%.

Implemented Git Flow branching strategy to manage 200+ feature releases, achieving zero rollbacks and zero critical bugs in production through disciplined version control.

Diagnosed backend latency using JProfiler, resolving the three most impactful performance bottlenecks and increasing system responsiveness by 40%.

Strengthened release pipeline security by integrating static code analysis tools, reducing potential vulnerabilities by 40% in alignment with industry compliance standards.

Created a Confluence-based documentation system with diagrams, architecture flows, and code snippets, leading to a 10% faster deployment rate and reduced integration defects.

Advocated Agile best practices across three squads, resolving delivery blockers that improved sprint completion rate by 20% and enabled smooth AWS-based deployments.

Launched a peer mentoring initiative, pairing experienced developers with junior engineers, which resulted in 50% faster onboarding and a 15% improvement in code quality.

Integrated centralized logging and AOP-based error handling using Log4j and Spring AOP, enhancing observability and enabling early issue detection.

Collaborated with designers and QA to implement WCAG-compliant UI enhancements, achieving 90% user satisfaction among accessibility testers through iterative usability refinement. Synchrony India Full Stack Java Developer January 2019 – July 2020 Developed scalable RESTful APIs using Spring Boot and Hibernate, cutting backend response times by 30% and enabling onboarding of 1,000+ new users to customer-facing platforms.

Built responsive web interfaces with HTML5, CSS3, Bootstrap, and Angular, applying mobile-first design principles to boost engagement and accessibility across devices.

Implemented client-side validation using Angular reactive forms and ES6, reducing input errors by 40% and improving real-time UI responsiveness.

Authored efficient SQL queries and managed data access layers via JPA/Hibernate, supporting high-throughput transactional systems. Participated in defect triaging and resolution during QA/UAT cycles, improving product stability and accelerating go-live approvals. Introduced a standardized API testing framework with Postman and documentation templates, reducing onboarding time for junior developers and cutting testing overhead by 15%.

Ensured data consistency and schema versioning using Liquibase and Flyway, achieving 99.99% data availability and reducing migration- related failures.

Analyzed application logs with Log4j, proactively identifying and resolving production issues to maintain system reliability and uptime SLAs.

Streamlined CI/CD pipelines using Jenkins, reducing build times by 20% and enhancing deployment visibility through continuous monitoring of build health.

Revamped sprint planning workflows, reducing meeting overhead by 30% and reclaiming 10+ hours weekly for feature development, enabling 5 consecutive on-time sprint deliveries.

Refactored frontend architecture with modular design patterns, improving code readability, testability, and reuse across multiple feature teams.

Translated complex product requirements into 5 robust architectural blueprints, reducing design ambiguity by 60% and supporting faster development cycles.

Applied unit testing best practices and CI integration to achieve comprehensive test coverage, reducing regression defect rate by 25%. Backend & Microservices: Java 11+, Spring Boot, Spring Cloud, Spring Security, Hibernate, JPA, RESTful APIs, Netflix OSS, Resilience4j, OAuth2, JWT

Frontend Technologies: Angular (Reactive Forms), React, HTML5, CSS3, JavaScript, TypeScript, Bootstrap, WCAG Accessibility Standards

Cloud & DevOps: AWS (EC2, S3, RDS, Lambda, IAM), GCP (Cloud Functions, Compute Engine), Docker, Kubernetes, Jenkins, GitHub Actions, Bitbucket, Git, Maven

Databases & Caching: PostgreSQL, MySQL, MongoDB, Redis, Ehcache, Liquibase, Flyway, SQL performance tuning Testing & Observability: JUnit, Mockito, Postman, Newman, Selenium, Log4j, JProfiler, SonarQube, OpenTelemetry, ELK Stack

(Elasticsearch, Logstash, Kibana), Spring AOP

CI/CD & Automation: Jenkins, GitHub Actions, Maven, Bitbucket Pipelines, Git Flow, CI-integrated unit/integration testing, automated deployments

Documentation & Agile Tools: Swagger/OpenAPI, Confluence, Jira, Sprint Planning, Peer Reviews, Knowledge Sharing Architecture & Collaboration: Microservices architecture, event-driven systems (Apache Kafka), API design & versioning, onboarding documentation, sprint leadership

Skills & Interests:

Education:

Master’s in Computer And Information Science Arkansas State University, Jonesboro, AR Bachelor of Technology in Computer Science Engineering Vignan’s University, Guntur, India CGPA - 4.0

CGPA - 3.4

Certifications:

Certified AWS Developer Associate

Java Full Stack Certification

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