What are the responsibilities and job description for the Senior Application Developer position at Geopaq Logic?
Senior Application Developer
Contract Period: 1/2/2026 – 12/31/2026
Work Location: Ridgefield Park, NJ
Note: Must be able to speak Korean/English bilingual
[Responsibilities]
- Design, develop, and maintain robust, scalable applications and modules, writing clean, efficient, and well-documented code
- Manage the entire software development lifecycle, including planning, prioritizing, testing, and releases, often using Agile methodologies
- Lead, guide, and mentor junior developers, conducting code reviews and ensuring adherence to best practices
- Work closely with project managers, business analysts, designers, and other engineers to define requirements and deliver innovative solutions
- Implement automated testing, debug issues, troubleshoot complex problems, and ensure application security and performance
- Contribute to high-level application design and database architecture
- Participate in internal and external meetings to gather the business requirements and suggest solutions
- Analyze the business requirements and suggest the best practice to apply to the business requirements
- Write clean code to produce fully functional backend processes and frontend UI modules
- Develop a new or existing system of frontend UI and APIs
- Write unit, integration, and production test scenarios
- Troubleshoot and debug to optimize application performance
- Liaise with the development team to identify and plan new features
- Ensure the developed modules comply with Samsung SDS quality assurance standards
- Research and suggest new technologies, applications, and protocols
- Be an individual contributor when it comes to designing and developing frameworks and critical pieces of code that have a wider impact
- Create detailed technical plans for the execution and implementation of projects
- Be available to answer technical questions, clarifications, and clear obstacles for the team
- Being transparent with the team about challenges, failures, and successes
- Writing development progress reports
[Requirements]
- 10 years of application development experience
- Bachelor's degree in computer science, engineering, or a related field
- Extensive knowledge of Java development. This includes the whole process, from the first line of code to implementation in the production environment
- Deep knowledge of operating systems, including but not limited to
- Proficiency with writing automated tests in JUnit, Espresso, Mocha, Jest, Enzyme, XCTest, etc.
- Proficiency in Java, with a good understanding of its ecosystems
- Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts
- Familiarity with different design and architectural patterns
- Skill for writing reusable Java libraries
- Know-how of Java concurrency patterns
- Good understanding of the concepts of MVC (Model-View-Controller) Pattern, JDBC (Java Database Connectivity), and RESTful web services
- Experience in working with popular web application frameworks like Play and Spark
- Relevant Knowledge of Java GUI frameworks like Swing, SWT, and AWT according to project requirements
- Extensive knowledge of the class loading mechanism in Java
- Experience in handling external and embedded databases such as Oracle, MS SQL, etc.
- Understanding basic design principles behind a scalable application
- Skilled at creating database schemas that characterize and support business processes
- Basic knowledge of JVM (Java Virtual Machine), its drawbacks, weaknesses, and workarounds
- Implementing automated testing platforms and unit tests
- In-depth knowledge of code versioning tools, for instance, Git
- Expertise in continuous integration
- Experience in Java Server Pages (JSP) and servlets, Web frameworks like Struts and Spring
- Web Technologies like HTML, JavaScript, CSS, JQuery
- Abstract classes and interfaces
- Constructors, lists, maps, sets
- File IO and serialization, Exceptions, and Generics
- Java Keywords like static, volatile, synchronized, transient, etc
- Multithreading and Synchronization
- Experience with profiling and debugging Java-based applications and products
- Experience integrating with backend systems preferred, such as ERPs, WMS, OMS, etc.
- Solid knowledge of performance Improvement best practices
- Experience in a similar role would be advantageous
- Willingness to build professional relationships with staff and clients
- Excellent communication, motivational, and interpersonal skills
Job Type: Full-time
Work Location: In person