Senior Java Backend Engineer — AI-Driven Security

NinjaOne; Maine; Hybrid; USD 140,000 - 200,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

401(k) plan

Paid Time Off

Hybrid remote

Job summary

NinjaOne's Vulnerability Management team is building a real-time, AI-driven engine that helps IT teams find and fix security exposures quickly. As a Senior Java Backend Engineer, you will design and scale backend services powering CVE correlation, remediation workflows, and high-throughput data processing for millions of endpoints.

We value experience with scalable systems, API design, and strong testing practices.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Information Technology, or equivalent work experience.
• 10+ years experience in Java software development for product applications; Kotlin is a plus.
• 4+ years experience with highly scalable software systems.
• Experience scaling systems and solving scale challenges.
• Solid knowledge of OO design principles.
• Expertise in scalable data structures and OO design.
• Knowledge of API best practices and REST service development (Spring/Jersey).
• Relational database design and development experience.
• Experience building client and server-side features for responsive messaging.
• Caching systems experience; Redis is a plus.
• Strong quality testing practices.

Responsibilities

• Develop and scale backend services for vulnerability detection and remediation workflows.
• Contribute to high-availability, enterprise-grade software across millions of endpoints.
• Deliver code with quality-first mindset and ship features in a startup-like environment.
• Collaborate with product and detection teams to improve risk prioritization.

Skills

Java

Kotlin

REST APIs

Distributed systems

OOP design

Redis

Database design

Microservices

Performance optimization

CI/CD

Education

Bachelor's degree in CS/Engineering

Tools

Spring Framework

Jersey

PostgreSQL

Kafka

Redis

Job description

NinjaOne's Vulnerability Management team is building a real-time, AI-driven engine that helps IT teams find and fix security exposures quickly. As a Senior Java Backend Engineer, you will design and scale backend services powering CVE correlation, remediation workflows, and high-throughput data processing for millions of endpoints.

We value experience with scalable systems, API design, and strong testing practices.