Senior Staff Software Engineer - Hybrid AI-Powered Platform

UKG Inc.; Lowell (MA); Hybrid; USD 151,000 - 215,000; Full time

Benefits offered by this job

Health insurance

Performance bonus

Stock options

Job summary

UKG is seeking a Sr Staff Software Engineer with deep Java, Spring, and React experience to design, build, and optimize scalable enterprise applications and platform services.

You will lead AI-powered capabilities, integrate LLMs, and advance CI/CD practices while collaborating across product, UX, QA, DevOps, and security teams. The role requires hybrid work with a Lowell in-office presence and a strong focus on engineering excellence.

Qualifications

• BS/MS degree in Computer Science, Engineering, or a related discipline, or equivalent practical experience.
• 10+ years of hands-on experience developing enterprise Java-based web applications.
• Strong experience with Java, J2EE, Spring Boot, Spring Framework, Hibernate/JPA, React, JavaScript, HTML5, CSS3, REST APIs, Microservices, SQL, and MVC architecture.
• Strong SQL experience, including Stored Procedures, Functions, Triggers, Views, and query optimization.
• Experience working in Agile software development environments.
• Strong understanding of Test-Driven Development (TDD), automated testing, CI/CD pipelines, and software quality best practices.
• Excellent analytical, debugging, troubleshooting, and communication skills.
• Proven track record of delivering high-quality, scalable software solutions on time.

Responsibilities

• Design, develop, test, and maintain scalable Java-based web applications and platform services.
• Build high-quality, secure, scalable, and maintainable software following modern software engineering principles and best practices.
• Demonstrate an excellent understanding of object-oriented programming, design patterns, algorithms, distributed systems, and software architecture.
• Develop both front-end and server-side components using Java, Spring Boot, React, JavaScript, HTML5, CSS3, SQL, Hibernate/JPA, and related technologies.
• Design and implement RESTful APIs and microservices supporting enterprise SaaS applications.
• Build, integrate, and maintain AI-powered features, including LLM integrations, RAG, semantic search, prompt orchestration, and intelligent workflow automation.
• Design, develop, and optimize AI Agents to automate engineering and business workflows with modern agent frameworks and security best practices.
• Leverage AI-assisted development tools to improve productivity while maintaining code quality, security, testing, and maintainability.

Skills

Java

Spring Boot

React

REST APIs

Distributed systems

OO design

AI integration

Education

BS/MS in Computer Science or related field

Tools

GitHub Copilot

OpenAI / LLMs

Docker

Kubernetes

Job description

UKG is seeking a Sr Staff Software Engineer with deep Java, Spring, and React experience to design, build, and optimize scalable enterprise applications and platform services.

You will lead AI-powered capabilities, integrate LLMs, and advance CI/CD practices while collaborating across product, UX, QA, DevOps, and security teams. The role requires hybrid work with a Lowell in-office presence and a strong focus on engineering excellence.