RESUME / AJAY KUMAR
Ajay Kumar.
Senior Associate Software Engineer at Oracle
Summary
Software Engineer with 6+ years of experience building scalable, high-performance enterprise applications across Healthcare and Insurance domains. Expertise in Java, Spring Boot, Microservices, RESTful APIs, and Distributed Systems, complemented by strong foundations in Data Structures, Algorithms, and System Design (LLD/HLD). Experienced in cloud-native development using OCI and AWS, application performance optimization, and building Generative AI and LLM-powered solutions.
Professional experience
Oracle · Senior Associate Software Engineer
October 2023 — Present
- Designed and developed scalable Java Spring Boot and Micronaut microservices for Oracle Health Revenue Cycle applications, delivering high-performance solutions supporting critical healthcare workflows.
- Implemented 20+ secure REST APIs and OCI Object Storage integrations, enabling automated document processing, secure data management, and improving operational efficiency by 35%.
- Contributed to Intelligent Prior Authorization (IPA) solutions, streamlining authorization workflows, reducing manual intervention by 50%, and accelerating processing for providers and payers.
- Enhanced backend services and optimized API performance through code refactoring, caching, and query tuning, reducing average response latency by 40%.
- Developed integrations between Oracle Health applications and OHPAC using Millennium Proxy and Cloud.Next, enabling seamless interoperability and efficient healthcare data exchange.
- Automated four critical Revenue Cycle workflows, reducing manual effort by 60%, doubling processing speed, and significantly improving operational throughput and business productivity.
- Led requirement analysis, technical design, and development of a Performance & Metrics Dashboard, providing visibility into 25+ operational metrics and system KPIs.
- Increased automated test coverage to over 85% using JUnit and Mockito, conducted architecture reviews, and led production support, reducing defects by 30% and MTTR by 50%.
Cerner Corporation · Software Engineer II
June 2022 — September 2023
- Optimized Soarian Financial application performance through query tuning, improving response times for 100K+ healthcare users.
- Developed React.js, Spring Boot, and microservices-based features, supporting 200K+ daily requests with 99.9% availability.
- Designed and implemented RESTful APIs and backend services, enabling scalable and reliable healthcare application workflows.
- Migrated legacy applications to React-based interfaces, reducing maintenance effort by 30% and improving user experience.
- Conducted code reviews, enforced coding standards, and mentored engineers, reducing production defects by 30%.
Tata Consultancy Services · System Engineer
September 2019 — June 2022
- Developed Java/J2EE, Spring Framework, and microservices-based applications supporting pension and annuity services for a leading UK insurance provider.
- Participated in end-to-end SDLC activities, delivering 20+ enhancements and defect fixes across multiple insurance business modules.
- Designed and optimized PL/SQL procedures and database queries, improving data processing efficiency and application performance.
- Resolved 100+ production and application defects through DevPlus, ensuring timely delivery and maintaining high system reliability.
- Collaborated across distributed teams, supporting code reviews, deployments, and continuous knowledge transfer.
Technical skills
Programming Languages
Java · JavaScript · Kotlin · Python · C
Backend Technologies
Spring Boot · Spring MVC · Spring JDBC · Spring AOP · Hibernate/JPA · Micronaut · RESTful APIs · Microservices
Frontend Technologies
React.js · Redux · Node.js · HTML5 · CSS3 · Bootstrap
Architecture & Design
Microservices Architecture · Distributed Systems · Event-Driven Architecture · System Design (LLD/HLD) · Design Patterns
Databases
Oracle Database · Microsoft SQL Server · MySQL · MongoDB
Cloud & DevOps
Oracle Cloud Infrastructure (OCI) · Amazon Web Services (AWS) · Docker · Kubernetes · Oracle Kubernetes Engine (OKE) · Jenkins · Grafana
Testing & Quality Assurance
JUnit · Mockito · Unit Testing · Integration Testing · Test-Driven Development (TDD)
Tools & Methodologies
Git · GitHub · AccuRev · JIRA · Crucible · IntelliJ IDEA · Eclipse IDE · Postman · Oracle SQL Developer · PL/SQL Developer
Artificial Intelligence & GenAI
Spring AI · Large Language Models (LLMs) · AI Agents · Prompt Engineering · GPT · Gemini · Claude
Core Computer Science Fundamentals
Data Structures & Algorithms · Object-Oriented Programming (OOP) · SOLID Principles · Database Management Systems (DBMS) · Software Troubleshooting & Debugging
Education
B.Tech · 8.49 CGPA
Chaibasa Engineering College · 2019
Class 12 · 74%
St Columba’s College, Hazaribagh · 2014
Class 10 · 82.4%
R.K.V High School, Bagodar · 2012