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I am a Senior Java Developer with extensive experience designing and building scalable, secure cloud-native applications. I specialize in Java, Spring Boot, Microservices, and CI/CD automation, with a proven track record in finance, healthcare, and aviation industries. I enjoy leveraging emerging technologies to deliver innovative solutions in real-time data processing and API development, while optimizing performance and ensuring regulatory compliance. I’m eager to collaborate with cross-functional teams to deliver impactful results.…I am a Senior Java Developer with extensive experience designing and building scalable, secure cloud-native applications. I specialize in Java, Spring Boot, Microservices, and CI/CD automation, with a proven track record in finance, healthcare, and aviation industries. I enjoy leveraging emerging technologies to deliver innovative solutions in real-time data processing and API development, while optimizing performance and ensuring regulatory compliance. I’m eager to collaborate with cross-functional teams to deliver impactful results.

Lakeshwar Mandal

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am a Senior Java Developer with extensive experience designing and building scalable, secure cloud-native applications. I specialize in Java, Spring Boot, Microservices, and CI/CD automation, with a proven track record in finance, healthcare, and aviation industries. I enjoy leveraging emerging technologies to deliver innovative solutions in real-time data processing and API development, while optimizing performance and ensuring regulatory compliance. I’m eager to collaborate with cross-functional teams to deliver impactful results.…I am a Senior Java Developer with extensive experience designing and building scalable, secure cloud-native applications. I specialize in Java, Spring Boot, Microservices, and CI/CD automation, with a proven track record in finance, healthcare, and aviation industries. I enjoy leveraging emerging technologies to deliver innovative solutions in real-time data processing and API development, while optimizing performance and ensuring regulatory compliance. I’m eager to collaborate with cross-functional teams to deliver impactful results.

Available to hire

I am a Senior Java Developer with extensive experience designing and building scalable, secure cloud-native applications. I specialize in Java, Spring Boot, Microservices, and CI/CD automation, with a proven track record in finance, healthcare, and aviation industries.

I enjoy leveraging emerging technologies to deliver innovative solutions in real-time data processing and API development, while optimizing performance and ensuring regulatory compliance. I’m eager to collaborate with cross-functional teams to deliver impactful results.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Software Developer Advisor | Full Stack Developer (Production Support) at General Dynamics Information Technology (GDIT)

June 1, 2025 - Present

Provided production support for mission-critical enterprise applications in a high-security government environment, ensuring 24/7 uptime. Developed full-stack solutions using Java 21, Spring Boot, Node.js, Express.js, and Angular 19 to improve performance and UX. Implemented modular, layered architecture and TypeScript-based microservices, improving code reuse and reducing defects. Optimized Oracle queries and built CI/CD pipelines with Jenkins, GitHub Actions, and Docker to streamline deployments. Enhanced observability with Grafana/Prometheus dashboards and centralized logging, and led incident triaging to reduce MTTR by 40%.

Senior Software Engineer at Bank of America

May 1, 2025 - September 29, 2025

Led automation of the DCE Logs Cleanup process, reducing Oracle DB storage costs by 30% and improving system performance by 25%. Designed DCE Logs Bundle Extraction pipeline with HDFS, Apache Spark, and Azure Blob Storage to process over 2TB of log data. Wrote Python utilities for pre-processing and validation to accelerate ETL throughput by 50% and implemented MFA/token-based authorization to support PCI-DSS/SOX compliance. Built microservices on Azure AKS using Terraform, and integrated Kafka for real-time data streaming (over 5M records/day). Created CI/CD pipelines (Jenkins, GitHub Actions, Docker) reducing deployment times by 70% and improving monitoring with Grafana/Prometheus.

Java Developer at Capital One

September 1, 2024 - September 29, 2025

Led design and development of mission-critical Java applications, improving transaction processing speed by 35% and reducing downtime. Built microservices with Spring Boot and Spring Cloud to enable scalable processing of over 1M API requests daily. Optimized queries for MySQL, PostgreSQL, and MongoDB, reducing latency by 40%. Mentored junior developers and led code reviews to improve quality. Designed AWS serverless solutions (Lambda, S3) to cut infrastructure costs by 25%. Implemented end-to-end CI/CD with Jenkins and Docker, achieving 95% automated deployment success.

Java Developer at First American Bank

January 1, 2022 - September 29, 2025

Implemented secure Java applications processing over 500K transactions monthly. Integrated RESTful APIs with Spring Boot to enhance interoperability and reduce manual data entry by 60%. Optimized SQL queries and stored procedures, improving database performance by 40%. Collaborated with Angular front-end teams to deliver responsive banking interfaces and reduce customer service requests.

Software Engineer at UnitedHealthcare

February 1, 2021 - September 29, 2025

Developed healthcare data pipelines using Python to process HL7, FHIR, and X12 EDI standards, ensuring HIPAA compliance and data accuracy. Integrated FHIR APIs for real-time access to clinical data, improving retrieval by 60%. Built scalable telehealth solutions serving 15,000+ patients. Streamlined EDI parsing and ingestion, reducing processing time by 40%. Collaborated on Epic Interconnect API integration and deployed cloud-native apps on AWS/Azure with HIPAA-compliant infrastructure.

Software Engineer at Delta Airlines

March 1, 2019 - September 29, 2025

Developed scalable database solutions supporting 2M+ airline ticketing transactions monthly. Optimized flight booking and scheduling systems, reducing transaction processing time by 45%. Built mobile apps for passenger self-service, improving customer satisfaction scores by 25%. Collaborated on APIs powering integration with third-party portals and migrated legacy Java systems to microservices with Spring Boot and Docker. Ensured compliance with FAA digital records via secure logging (Log4j, Kafka).