Sr Java Developer

Obox Solutions - Irving, TX

Full-time - Mid Level

Irving, TX

Professional, Scientific, and Technical Services

About the position

The Sr Java Developer will play a crucial role in the development projects for American Airlines' customer-facing Application Web Services team. This position requires a passionate and energetic individual who can work collaboratively within an agile team to deliver features and functionality across various product layers. The role involves hands-on development, system design, and performance tuning, with a focus on quality and efficiency.

Responsibilities

• Perform requirements gathering and analysis.
• Create architecture and design documents.
• Refine requirements and map to technical modules fitting the enterprise-wide architecture.
• Represent design of the system in UML diagrams such as Sequence Diagrams and ER models.
• Create Data flow diagrams and represent data in JSON format and map to business cases.
• Develop applications using Java, Spring Boot, Spring Cloud, and Cloud Foundry, Kubernetes.
• Develop microservices using REST, Spring, Spring Boot.
• Write Maven build scripts for building Java-based Spring Boot microservices.
• Develop scripts to deploy the microservices in Cloud such as Cloud Foundry and Kubernetes.
• Develop Jenkins files to automate the scripts using CI/CD continuous integration and Continuous delivery.
• Use Swagger2API for publishing REST interfaces.
• Scale the applications using auto-scaling policies, design for fault tolerance, availability and low response times.
• Develop using Spring modules such as actuator for metrics, health check of services.
• Develop using Spring Cloud Config for storing configuration of the services.
• Develop using Spring Cloud Eureka to have service registry and discovery.
• Improve performance using Redis cache, NoSQL databases such as DynamoDB.
• Develop Data access layer using JPA, Hibernate and ORM tools over JDBC layer.
• Develop applications using cache such as Redis using Java Jedis client.
• Test REST resources using tools like Postman, Curl etc.
• Make enhancements to legacy systems.
• Develop/enhance SOAP web services over XML and JSON written using J2EE technologies, EJBs, Servlets, JSP, JavaScript, jQuery, AJAX, Angular, React, NodeJS.
• Debug issues involving multi-threading, concurrency issues.
• Experience using XML, XSD, XSLT, DOM, JMS, Spring Integration.
• Knowledge of application servers such as Tomcat, Glassfish and JBoss.
• Develop applications using Spring MVC, Spring Batch and Spring Integration.
• Do performance tuning of SQL queries, propose improvements to existing systems.
• Support applications using multi-threading concepts, TCP/IP, database, and REST based JSON APIs.
• Handle legacy systems which involves processing using multithreading, handle concurrency issues and network issues.
• Configure Database connections, write SQL and PLSQL scripts to interact with RDBMS databases.
• Using Java and Spring technologies to develop REST based APIs and clients invoking such REST services using JSON as payload.
• Knowledge of NGINX and other infrastructure tools.
• Create scripts using build and deployment tools: Maven, Git, Junit.
• Create code repositories in Git and perform GIT branching, merging and Push Requests in Git flow.
• Build Maven pom.xml build files to automate CI/CD in Jenkins.
• Implement CI/CD pipelines for DevOps using tools (Nexus, Hygieia, SonarQube, Github, Jenkins).
• Implement Jenkins pipelines to enable Code pipelines and fix code issues shown by SonarQube to improve code quality.
• Linux/Unix and Shell scripting.
• Develop scripts written in Shell/Bash for various operational tasks.
• Experience with the scrum process and participate in Agile ceremonies.
• Update user stories, tasks in JIRA, Confluence, IBM Rally tools and produce reports.
• Experience and understanding of test driven (TDD) & Behavioral Driven development (BDD).
• Develop test cases by writing code using tools such as Mockito, EasyMock and develop integration tests using tools such as Cucumber.
• Excellent verbal and written communication skills and problem-solving skills.
• Ability to work closely with a larger development team of differing skillsets.

Requirements

• Bachelor's degree in computer science, electronics, engineering, or related field.
• 5-7 years of experience in software development or engineering.
• Experience in Object-oriented Analysis and Design (OOAD), Unified Modelling Language (UML), Test Driven Development (TDD), Java Design Patterns, Enterprise Integration Design Patterns, Disaster Recovery Design and Development.
• Proficiency in Java EE, Spring MVC, Spring Web Flow, Struts, HTML, CSS, XML, Servlets, JSP, JavaScript, JQuery, Junit, JSON, Ajax, Angular, React.
• Experience with Java 1.8, EJB, Spring Framework, Spring Boot, Groovy, REST/SOAP Web Service, WSDL, JAXB, JAXP, XPATH, XSLT, XQuery, XSD, JMS, Spring Integration, WebSphere MQ, ActiveMQ.
• Knowledge of Hibernate, JPA, JDBC, MySQL, Oracle, PostgreSQL, PL/SQL, Query Performance Tuning.
• Experience with No-SQL Database: DynamoDB, NoSQL.
• Familiarity with AWS, CloudFormation Template, Redis Cache, EhCache, Tomcat, JBoss, Glassfish, WebSphere.
• Experience with CI/CD Tools: Junit, Mockito, JBehave, Maven, Jenkins, Nexus, Chef, Puppet, Linux/UNIX Shell Scripting, Ruby.
• Knowledge of SCM Tools: Git, Subversion.
• Experience with Monitoring Tools: Dynatrace, CloudWatch, Zenoss.
• Proficiency in Project Management Tools: Jira, Rally, Confluence, Visio, PowerPoint, Excel, Word.
• Familiarity with Operating Systems: Windows, Unix, Linux.
• Experience with IDEs: Eclipse, RAD, Oracle SQL Developer, PuTTY, Visual Studio Code, Robo Mongo.
• Experience with Testing tools - Postman, SoapUI.
• Familiarity with Agile, Scrum, Kanban, XP methodologies.

Nice-to-haves

• Experience with performance tuning of SQL queries.
• Knowledge of NGINX and other infrastructure tools.
• Experience with monitoring tools like Dynatrace and CloudWatch.

Benefits

• Health insurance
• 401k plan
• Paid holidays
• Flexible scheduling
• Professional development opportunities