Java Developer Senior

Isacc Ikey Wren

Senior Java Developer Full Stack Developer

********.***@*****.*** 9674, Bouncing Ball, Las Vegas, Nevada 89178 +1-904-***-**** Senior Java Developer with 8+ years of experience in building scalable, high-performance web applications using Java and modern frameworks. Expert in Spring Boot, Microservices, Node.js, Angular, and React, with a strong focus on delivering robust, end-to-end software solutions. Skilled in managing enterprise-level projects and the full SDLC within Agile frameworks, driving efficiency and innovation. Proficient in cloud platforms such as AWS and GCP, ensuring seamless deployment, high availability, and optimized performance. Passionate about code quality and continuous improvement, with a track record of mentoring junior developers to foster team success and innovation.

EXPERIENCE

Senior Java Developer Goldman Sachs Remote Mar 2024 – Present

• Designed and developed the backend architecture for Goldman’s Digital Wealth Management platform, supporting 1 million daily transactions for high-net-worth clients. Leveraged Java and Spring Boot to deliver real-time insights, especially critical for clients navigating market volatility and financial uncertainty, such as during earnings seasons or economic downturns.

• Led the seamless integration of the Goldman Sachs Data Lake, facilitating real-time data exchange across trading platforms and client advisory systems. Enhanced data interoperability, allowing 50,000 financial advisors to access comprehensive, up-to-the-minute financial data, thus improving client advisory effectiveness and portfolio performance.

• Enhanced data security by implementing advanced encryption protocols and secure data transfer systems to ensure compliance with SEC and FINRA regulations. Strengthened protection for millions of financial records, building client trust, especially as data privacy and cybersecurity concerns continue to intensify in the financial sector.

• Mentored junior developers and led Agile sprints, ensuring the timely and efficient delivery of critical updates for financial applications

(e.g., wealth management and trading platforms). Improved sprint efficiency by 15% by refining workflows to ensure essential features met client expectations, boosting client engagement and satisfaction.

• Led a team in Goldman’s annual Innovation Challenge, where we developed a predictive analytics tool for identifying early signs of credit risk and loan default. The tool attracted leadership’s attention and has since advanced to prototype development, with potential to enhance risk management and minimize loan loss provisions.

• Contributed to the deployment of high-demand financial applications on AWS, ensuring scalability during peak trading periods (e.g., IPOs, earnings announcements). This deployment strategy maintained high availability and robust performance for trading, wealth management, and other client-facing services.

• Played a crucial role in Goldman’s digital transformation initiatives, ensuring our technology solutions met the rapidly evolving demands of digital finance. This included building cloud-based services and integrating data analytics to create a dynamic, real-time financial ecosystem for clients and internal teams alike. Skills: Java, Spring Boot, Spring Data, Spring Batch, Spring Security, JPA, Hibernate, Junit, Restful API, Microservices, Redis, Apache Kafka, Confluent Kafka, Node.js, React, Material UI, Docker, Kubernetes, TDD, Multithreading, TypeScript, Python, Payment Integration, Google Akamai, Google Apigee, GKE, CloudSQL, PostgreSQL, Oracle, ElasticSearch, GitLab, ArgoCD, Swagger Fullstack Developer Change Healthcare Las Vegas Aug 2018 – Feb 2024

• Led the development of key backend services using Java, Spring Boot, and Microservices for Change Healthcare's Revenue Cycle Management platform. Enhanced the platform's ability to process millions of patient claims daily, improving system scalability by 40% during peak transaction periods.

• Designed and implemented RESTful APIs to enable seamless integration with electronic health records (EHR) and external healthcare systems. Successfully integrated over 50 third-party APIs, improving data exchange between healthcare providers and payers, reducing claims processing time by 30%.

• Developed user-friendly, responsive web interfaces using React and Angular for applications like Clinical Decision Support. Focused on improving the user experience for healthcare providers, enabling them to access critical patient data faster, which improved decision- making speed by 25%.

• Deployed backend services on AWS and GCP, ensuring the scalability of healthcare applications. Implemented CI/CD pipelines using Jenkins and Docker, reducing deployment time by 35% and allowing for faster, more reliable software releases.

• Optimized SQL queries and Java code, resulting in a 50% reduction in database query times, leading to faster response times in patient data retrieval, which enhanced the overall user experience.

• Worked closely with the compliance team to ensure that all applications adhered to HIPAA and HITECH regulations. Implemented OAuth 2.0 and JWT for secure user authentication and authorization, protecting sensitive healthcare data.

• Participated in Agile (Scrum) sprints, contributing to weekly standups, backlog grooming, and code reviews. Worked closely with cross- functional teams to deliver software solutions on time, improving team efficiency and delivering new features 15% faster.

• Contributed to Change Healthcare’s annual hackathon, where I developed a prototype for an AI-powered billing assistant that predicted coding errors in real time, reducing billing inaccuracies by 20% and improving the accuracy of healthcare billing data. Skills: Java, Spring MVC, Maven, Gradle, Junit, Mockito, PostgreSQL, MySQL, Oracle, MongoDB, ElasticSearch, Redis, Node, RESTful API, GraphQL, TypeScript, Angular, RxJS, gRPC, Open API, Swagger, TDD, Docker, Kubernetes, AWS(EC2, S3, RDS, Lambda, EMR, ECS, EKS, SNS, SQS, OpenSearch, VPC, API Gateway, etc), React, Angular/AngularJS, Jenkins, GitHub, BitButcket, Teamcity, Kafka, RabbitMQ Software Engineer Summit Partners Las Vegas, NV Jun 2016 – Jul 2018

• Built and deployed high-performance, scalable web applications using Java, Spring Boot, and Python for backend services, and React, Angular, HTML5, CSS3 for the frontend. Delivered seamless experiences for users across multiple platforms and devices.

• Optimized both backend algorithms and front-end code, improving overall system efficiency. Re-engineered data processing and restructured SQL queries, resulting in a 30% performance boost during peak usage times.

• Built and integrated RESTful APIs to connect the front-end and backend systems, ensuring smooth data flow. Successfully enabled seamless communication between various microservices, improving app response times and user experience.

• Utilized Python for data processing and automation tasks, creating scripts that automated repetitive tasks and improved data handling efficiency. Integrated Python-based tools with existing Java applications to enhance functionality.

• Led the development of unit and integration tests using JUnit and Mockito, ensuring that backend services were robust and free of defects. Achieved a 20% reduction in errors during production and improved system reliability.

• Actively participated in Agile sprints, taking ownership of tasks in both front-end and back-end development. Contributed to backlog grooming and retrospectives, improving the team's workflow and accelerating project delivery by 15%.

• Took part in a company hackathon, where I helped design and develop an automated reporting tool using a full-stack approach. This tool was later implemented into client solutions, showcasing technical expertise and creative problem-solving skills.

• Assisted in the deployment of applications on AWS and contributed to cloud architecture improvements. Ensured scalable, reliable solutions by integrating cloud services with backend systems, supporting real-time data processing and monitoring. Skills: Java, Python, Node, Spring Boot, Spring Framework, JPA, Microservice, Node, Angular, React, JQuery, HTML, CSS, Git, JSP, OAuth, JWT Education

Bachelor of Computer Science The University of Nevada 2012-2016 SKILLS

• Backend : Java, Spring Boot, Spring Framework, Spring Security, Hibernate, JPA, Microservices, Node.js, Ruby, Python, Kafka, RabbitMQ, GraphQL, OAuth, JWT, Maven/Gradle, WebScoket, gRPC, RESTful API, GraphQL

• Frontend : HTML, CSS, JavaScript/TypeScript, jQuery, React/Next, Redux, Angular/Angular.js, RxJS, JSP

• Database : MySQL, PostgreSQL, Oracle, MongoDB, Redis, AWS RDS, DynamoDB, GCP CloudSQL, ElasticSearch/OpenSearch

• Testing & Tools : Junit, Mockito, Jasmine, Cucumber, Selenium, Jest, Cypress, TDD, DDD

• Cloud : AWS(Lambda, EC2, S3, Cognito, API Gateway, DynamoDB, RDS, SQS, SNS, Terraform, ECS, EKS, Fargate, API Gateway, VPC, etc), GCP(Akamai, Apigee, CloudSQL, GKE, Secret Manger, BigQuery, Cloud Functions, Cloud Pub/Sub, GKE, etc), Heroku, etc

• Other : Agile, Confluence, Git, GitLab, Github, Bitbucket, Docker, Kubernetes, Bamboo, Jenkins, CircleCI, Grafana, Datadog, Sentry, Jira, ArgoCD, Swagger, OpenAPI, Postman, TDD, BDD

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