Senior Java Spring Boot Microservices Engineer

SARADA KC

214-***-**** ************@*****.***

PROFESSIONAL SUMMARY

Senior Software Engineer with 7+ years building and modernizing Java Spring Boot microservices and secure REST APIs for finance and payroll platforms. Strong expertise in migrating services across Java versions, enhancing build stability and runtime performance, and implementing OAuth 2.0/JWT-based security. Skilled in designing scalable, cloud-native solutions with Kafka messaging, relational database optimization, and containerized deployments, driving reliable client-facing applications.

TECHNICAL SKILLS

•Languages: Java, Python, PHP, JavaScript, TypeScript, Node.js, SQL

•Frameworks & Core Concepts: Spring Boot, Spring MVC, Hibernate, JPA, RESTful APIs, Microservices Architecture, Web Services Development, J2EE, Software Design Patterns

•Front-End: HTML, CSS, Angular, React, Bootstrap

•Databases: Oracle, MySQL, MongoDB, DynamoDB

•Cloud & DevOps: AWS EC2, AWS S3, AWS RDS, AWS Lambda, AWS ECS, AWS EKS, AWS CloudWatch, Docker, Kubernetes, Jenkins, Terraform, Azure AD, Azure Data Factory

•Tools: Git, GitHub, Maven, Gradle, JIRA, SonarQube, Kibana, Confluence, Postman, cURL, CI/CD Pipelines, Elasticsearch

•Testing & Monitoring: JUnit, Mockito, Cucumber, Selenium, Splunk, Dynatrace, Log4J

•Messaging & Streaming: Kafka, RabbitMQ, JMS, AWS Secrets Manager, MQs

•Methodologies: Agile, Scrum, Test Driven Development

•Security Protocols: Security Protocols SAML2.0, Security Protocols OAuth2.0

PROFESSIONAL EXPERIENCE

Paycom Payroll LLC Jan 2025 - Present

Sr Software AI Developer Irving, Texas

Payroll and Workforce Platform Modernization: Built and upgraded Spring Boot microservices and secure REST APIs for payroll scheduling and accounting workflows with Kafka events Kubernetes deployments and added RAG plus LLM based automation for faster issue lookup and validation.

•Developed and maintained 15 plus RESTful APIs using Java, Spring Boot, Spring MVC, Spring Data JPA, and Hibernate, supporting payroll, scheduling, accounting, and internal business workflows, demonstrating strong web services development practices.

•Led migration of 8 Spring Boot services from Java 11 to Java 21 by upgrading Maven plugins, resolving deprecated APIs, aligning dependencies, and validating functionality, reducing build failures by 60 percent and runtime exceptions by 25 percent.

•Designed and implemented OAuth 2.0 and JWT based authentication using Spring Security, strengthening claim validation, scope enforcement, and token lifecycle handling, reducing authorization failures by 30 percent and login issues by 40 percent.

•Implemented event driven workflows using Apache Kafka producers and consumers within Spring Boot services to support asynchronous payroll processing, downstream integrations, and reliable message handling.

•Optimized MySQL queries and indexing strategies, improving payroll report generation time by 35 percent through query tuning, batching, and reduced database round trips.

•Refactored high change modules to improve maintainability and test coverage, applying software design patterns and test driven development practices, lowering production defects by 22 percent through code restructuring and improved unit testing.

•Designed reusable React component libraries and built employee facing dashboards, improving UI consistency and accelerating feature delivery across applications.

•Containerized Spring Boot and microservices using Docker and implemented standardized image build processes to ensure consistent deployment artifacts across environments.

•Deployed containerized applications to Kubernetes clusters with environment specific configuration, health probes, rolling updates, and autoscaling policies to support high availability and scalability.

•Built and optimized Jenkins CI CD pipelines to automate Docker image builds, Kubernetes deployments, and application release workflows, reducing build to deploy time by 28 percent.

•Delivered AWS infrastructure updates using Terraform, codifying IAM and S3 configurations as reusable modules to support consistent application deployments across environments.

•Developed Python based automation tools for release validation, artifact verification, and configuration comparison, reducing manual release preparation effort by 50 percent.

•Integrated LLM capabilities into Spring Boot microservices by orchestrating API calls, structured response parsing, validation logic, retry handling, and downstream workflow triggering within Java based services.

•Designed and implemented Retrieval Augmented Generation (RAG) pipelines using LangChain in Python to orchestrate document ingestion, embedding generation, vector retrieval, and grounded response construction, reducing issue lookup time by 35 percent.

•Built agent-based AI workflows using LangGraph and integrated LangSmith for tracing, prompt version tracking, evaluation scoring, token usage monitoring, and reliability analysis, and developed Python based evaluation pipelines that execute nightly test datasets and reduce manual prompt testing effort by 50 percent.

Guardian Life Dec 2022 - Dec 2024

Full Stack Java Developer Holmdel, NJ

Policy and Claims Processing Modernization: Developed Java 17 Spring Boot microservices and Angular backed APIs for policy intake validation and claims adjudication with Oracle optimization Kafka messaging and Spring Security controls for SSO and role based access.

•Architected and developed Java 17 and J2EE–based Spring Boot microservices for policy and claims processing, separating intake, validation, adjudication, and status updates into independent services, improving deployment flexibility and reducing cross service defect impact by 25 percent.

•Participated in full Software Development Life Cycle activities including requirements analysis, technical design, development, code reviews, testing, deployment coordination, and post-release support, which helped deliver features on schedule and maintain system stability

•Built RESTful APIs using Spring Boot and Spring MVC to support Angular 16 interfaces and partner integrations, enforcing standardized validation, pagination, and structured error handling, reducing integration defects by 20 percent.

•Implemented SOAP based integrations using Java and Spring Web Services for legacy partner systems, maintaining backward compatible schema updates and reducing interface related support issues by 30 percent.

•Designed and optimized Hibernate and Spring Data JPA mappings for Oracle databases, adjusted JPQL and native SQL queries and resolving N plus 1 issue, improving policy and claim read performance.

•Developed Oracle stored procedures and SQL batch scripts for reconciliation and lifecycle updates, reducing manual reconciliation effort by 40 percent and improving processing accuracy.

•Built event driven integrations using Apache Kafka with Java based producers and consumers, implementing retry logic, dead letter queues, and idempotent message handling, reducing duplicate claim update incidents by 50 percent and leveraging MQs for reliable messaging.

•Applied core Java principles, SOLID design patterns, and layered architecture practices to ensure modular, maintainable services that supported high volume policy transactions.

•Increased backend unit test coverage to over 80 percent using JUnit and Mockito, reducing production hotfix frequency and improving release confidence.

•Built integration tests for REST endpoints and Kafka flows to validate serialization, schema compatibility, and transactional consistency prior to production deployments.

•Monitored and managed production support tickets, resolving incidents within SLA targets and maintaining transparent communication with support and business stakeholders.

•Implemented application security using Spring Security with SSO validation, role-based authorization, and MFA aligned access controls to protect sensitive claims data.

•Implemented application security using Spring Security with SSO validation, SAML2.0 support, role-based authorization, and MFA aligned access controls to protect sensitive claims data.

Harbor Freight Sep 2021 - Nov 2022

Full Stack Software Engineer Calabasas, CA

Inventory and Order Fulfillment Integration: Built Java Spring Boot services and Angular modules to sync store and warehouse order and inventory updates in near real time using Oracle plus DynamoDB JWT security Docker deployments and logging dashboards in Kibana.

•Developed Java 11 and Spring Boot microservices for inventory availability, order processing, fulfillment updates, and returns used by stores and distribution centers, which streamlined order handling and reduced manual intervention

•Built RESTful APIs to sync store management and warehouse workflows in near real time, covering order status, pick pack ship events, and inventory adjustments.

•Developed lightweight backend services using Node.js and Express to support API integrations and asynchronous workflows.

•Created Angular 12 modules for product setup, inventory views, and reporting dashboards, using reusable components and role-based UI controls.

•Designed Oracle schemas for transactional data like orders and inventory movements and used DynamoDB for fast lookups like product metadata and store level availability.

•Implemented authentication and authorization with Spring Security and JWT, enforcing role-based access for store, warehouse, and admin functions.

•Integrated AWS S3 for secure uploads and downloads, supporting report exports and operational document storage.

•Developed JUnit tests for service and controller logic, covering validation rules, edge cases, and failure paths for order and inventory endpoints.

•Containerized services with Docker to standardize local setup and deployments, keeping configs consistent across dev, QA, and prod.

•Added structured Log4J logging and built Kibana and Elasticsearch dashboards for order failures, inventory sync issues, and Kafka consumer lag.

Premier Health Feb 2019 - Aug 2021

Jr Java Developer Dayton, OH

Patient Scheduling and Billing Services: Implemented Java 8 Spring Boot REST APIs for patient records appointments and billing with HIPAA aligned security and logging practices plus SQL tuning and Jenkins supported releases.

•Developed Java 8 and Spring Boot backend services that enabled healthcare workflows for patient records, appointment scheduling, and billing, resulting in faster data processing and smoother user interactions

•Built RESTful APIs for patient demographics, appointment management, and billing actions, implementing consistent request validation, structured error handling, and role-based access controls.

•Used Java 8 Streams, Lambda expressions, and Functional Interfaces to refactor service layer logic, reducing duplicated code and improving readability and maintainability.

•Implemented Spring Security authentication and role-based authorization to enforce controlled access to Protected Health Information for clinical and billing users.

•Ensured HIPAA aligned handling of PHI by applying least privilege access principles, audit friendly API design, and secure data exposure practices.

•Masked sensitive PHI fields in Log4J logs and eliminated raw payload logging to reduce data exposure risk during debugging and QA validation cycles.

•Developed MySQL and Oracle SQL scripts and stored procedures for billing extracts, batch updates, and appointment related data processing, improving batch execution performance.

•Used Java 8 Date Time API to implement scheduling rules, appointment conflict detection, and daylight saving time edge case handling, improving scheduling accuracy and reducing booking errors.

•Supported automated builds and deployments using Jenkins and assisted QA by validating REST endpoints, preparing test datasets, diagnosing API latency issues, and resolving SQL performance problems.

EDUCATION

Webster University

Master's, information technology management

CERTIFICATIONS

•AWS Certified Machine Learning – Specialty (MLS-C01)

•Google Professional Machine Learning Engineer

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