Senior Full-Stack Engineer, Payroll Platform

Socket.dev; Lowell (MI); On-site; USD 102,000 - 147,000; Full time

Job summary

UKG is seeking a Software Engineer III to join the Payroll team. This senior full-stack role leads projects and builds enterprise-grade web applications across React/TypeScript, Java REST APIs, and databases.

You will mentor junior engineers, design, develop, test, deploy, and maintain solutions, and collaborate with product, UX, and external teams to ensure high-quality results. Experience with cloud and DevOps is expected.

Qualifications

• Bachelor’s degree in computer science, engineering, or a related technical field, or equivalent practical experience.
• Minimum of six years of professional software development experience.
• Strong experience building full stack web applications.
• Strong proficiency in Java, React/TypeScript and SQL.
• Experience developing REST APIs and integrating them with front-end applications.
• Experience with SQL and NoSQL databases.
• Experience leveraging AI tools in software development (Claude, Copilot or Windsurf).
• Proficiency with GitHub and Jira.
• Knowledge of cloud technologies and DevOps.
• Experience with automated testing (JUnit, React Testing Library, Selenium, Cucumber).
• Excellent communication and interpersonal skills.

Responsibilities

• Full Stack Development: Write clean, maintainable, test and efficient code across React and TypeScript user interfaces, Java services and REST APIs, and database components.
• Technical Leadership: Contribute to the design, development, and deployment of complex software applications while ensuring high standards of quality and performance.
• Project Management: Manage the execution and delivery of features and projects, negotiate priorities and deadlines, and ensure timely, high-quality completion.
• Architectural Design: Participate in design reviews and the architectural design of front-end, backend, and data solutions while ensuring scalability, reliability, and maintainability.
• Code Review: Review code from other developers, provide feedback, and maintain a high bar for technical excellence, maintainability, observability, and automated testing.
• Testing: Build testable software and automate unit, integration, API, and end-to-end tests using tools such as JUnit, React Testing Library, Cucumber, or Selenium.
• Service Health and Quality: Maintain the health and quality of applications and services, proactively identify and resolve issues, and use telemetry to optimize performance and prevent recurring incidents.
• DevOps Model: Take ownership from requirements and design through development, testing, deployment, monitoring, and production support.
• Documentation: Document new features, enhancements, and fixes, contribute to training materials, and share knowledge with the team.
• Collaboration: Work with engineers, Product Management, UX, and external teams to ensure the integrity and quality of the complete solution.

Skills

Full stack development

Java

React/TypeScript

SQL

REST APIs

AI tools in development

GitHub

Cloud & DevOps

Testing (JUnit, Selenium, Cucumber)

Communication

Education

Bachelor's degree in CS/Engineering

Tools

JUnit

React Testing Library

Cucumber

Selenium

GitHub

Jira

Cloud platforms (Azure/AWS/GCP)

Job description

UKG is seeking a Software Engineer III to join the Payroll team. This senior full-stack role leads projects and builds enterprise-grade web applications across React/TypeScript, Java REST APIs, and databases.

You will mentor junior engineers, design, develop, test, deploy, and maintain solutions, and collaborate with product, UX, and external teams to ensure high-quality results. Experience with cloud and DevOps is expected.