Senior Software Engineer, Java | Endpoint State & Control

NinjaOne; United States; On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) plan

Unlimited PTO

Job summary

NinjaOne is building a new Endpoint State and Control backend in a true greenfield project. As Senior Software Engineer, Java, you will design server-side architecture, API contracts, and data models from scratch, collaborating closely with the agent/driver and UI teams to align across the stack.

You will own multi-tenant isolation, high-volume ingestion, and scalable storage in AWS, with Java/Kotlin at the core and PostgreSQL for persistence.

Qualifications

• 5+ years of backend Java/Kotlin engineering.
• Strong Java 11+ skills, Kotlin preferred.
• Experience designing RESTful APIs for multi-tenant SaaS platforms.
• Experience with PostgreSQL or relational databases.
• Comfortable with multi-tenant data isolation patterns and building from scratch.
• Ability to work in ambiguous problem spaces and define API contracts.
• Willingness to experiment with AI tools in development workflow.
• Experience leading backend technical design and architecture documents.

Responsibilities

• Design and build the server-side infrastructure for the Endpoint State and Control team, including the policy management service, agent-facing APIs for policy delivery, event/log ingestion from endpoints, and the data model for rules, configs, and telemetry
• Define service architecture, API contracts, and data storage strategy from the ground up, with no existing prior art to constrain you
• Collaborate closely with the engineer who owns agent/driver-level work and the engineer who owns the management console UI to keep contracts and constraints aligned across the stack
• Design and enforce multi-tenant data isolation patterns — per-tenant scoping, parameterized queries, no shared state — as a foundational concern, not an afterthought
• Design for high-volume event ingestion from distributed endpoints, balancing storage efficiency with the need for customers to query that data reliably
• Write technical design documents, drive cross-functional alignment, and lead backend technical design as requirements evolve
• Other duties as needed

Skills

Backend Java/Kotlin engineering

Java 11+ proficiency

RESTful API design

Multi-tenant SaaS experience

PostgreSQL or relational DB

Architectural design & data modeling

Leadership in backend design

AI tooling experimentation

Tools

RabbitMQ

Kafka

SQS

Job description

About the Role

NinjaOne is investing in a new Endpoint State and Control team, and we're looking for a Senior Software Engineer, Java to help build its server-side foundation from the ground up. This is a true greenfield opportunity — no server-side code exists yet. You'll join during the transition from proof-of-concept to production and help define the service architecture, API contracts, and data storage strategy from scratch, working shoulder-to-shoulder with the engineer who owns the low-level agent/driver work and the engineer who owns the management console UI.

This role calls for genuine comfort with ambiguity: requirements will evolve, and you'll need to make real architecture decisions before every downstream constraint is known. You'll design the systems that manage policy, ingest telemetry from endpoints at scale, and enforce multi-tenant isolation for a platform serving customers across the globe. If you want to shape a backend from its very first data model and API contract — not maintain someone else's — and you want to do it on a team that treats AI tools as part of the everyday workflow, this is that role.

Location - We are flexible on remote working from home, if you are located in the USA and reside in one of the following states - CA, CO, CT, FL, GA, *IL, KS, MA, MD, ME, NJ, NC, NY, OH, OR, TN, TX, VA, and WA. We have physical offices in Austin, TX and Tampa, FL, if you prefer a hybrid option.

We hire the best software engineers, but experience in our stack can’t hurt: NinjaOne is built on Java, Kotlin, C++, Golangand Postgres; supporting millions of user endpoints and running as a scalable cloud service in AWS. Knowing large-scale datastore bottlenecks, asynchronous application design and client-server architecture will help you.

What You’ll be Doing

• Design and build the server-side infrastructure for the Endpoint State and Control team, including the policy management service, agent-facing APIs for policy delivery, event/log ingestion from endpoints, and the data model for rules, configs, and telemetry
• Define service architecture, API contracts, and data storage strategy from the ground up, with no existing prior art to constrain you
• Collaborate closely with the engineer who owns agent/driver-level work and the engineer who owns the management console UI to keep contracts and constraints aligned across the stack
• Design and enforce multi-tenant data isolation patterns — per-tenant scoping, parameterized queries, no shared state — as a foundational concern, not an afterthought
• Design for high-volume event ingestion from distributed endpoints, balancing storage efficiency with the need for customers to query that data reliably
• Write technical design documents, drive cross-functional alignment, and lead backend technical design as requirements evolve
• Other duties as needed

About You

• 5+ years of backend Java/Kotlin engineering
• Strong Java 11+ skills, with Kotlin preferred — or a demonstrated ability and willingness to ramp quickly, since new NinjaOne code is Kotlin-first
• Experience designing RESTful APIs for multi-tenant SaaS platforms
• Experience with PostgreSQL or an equivalent relational database
• Comfortable with multi-tenant data isolation patterns and designing backend systems from scratch — defining data models, API shapes, and service boundaries with limited prior art
• Comfortable operating in ambiguous problem spaces where requirements are partially defined and will evolve
• Demonstrated ability to lead backend technical design: writing architecture documents, defining API contracts, and driving cross-functional alignment
• Curious about and comfortable experimenting with AI tools as part of your development workflow

Nice to have:

• Experience designing event ingestion pipelines from distributed endpoints (agent telemetry, log aggregation, high-volume event storage)
• Experience with RBAC/permission enforcement in a multi-tenant backend
• E xperience with message queues (RabbitMQ, Kafka, or SQS) for async event processing
• Accessibility compliance experience in enterprise B2B products
• Prior work in endpoint management, IT operations, or security tooling

About Us

NinjaOne unifies IT to simplify work for nearly 40,000 customers in 140+ countries.

The NinjaOne Unified IT Operations Platform delivers endpoint management, autonomous patching, backup, and remote access in a single console to improve efficiency, increase resilience, and reduce spend. By automating IT and managing all endpoints, organizations give employees a great technology experience at work. NinjaOne is obsessed with customer success and has retained a 98% customer satisfaction score for more than 5 years.

What You’ll Love

We are a collaborative, kind, and curious community.

We honor your flexibility needs with full-time work that is hybrid remote.

We have you covered with our comprehensive benefits package, which includes medical, dental, and vision insurance.

We help you prepare for your financial future with our 401(k) plan.

We prioritize your work-life balance with our unlimited PTO.

We reward your work with opportunity for growth and advancement.

Additional Information

This position is NOT eligible for Visa sponsorship.

*Due to operational policies, NinjaOne is unable to hire for this role within the city limits of Chicago. We will consider all qualified candidates who reside outside of the city proper or are willing to self-relocate.

Starting pay for the successful applicant depends on a variety of job-related factors, including but not limited to location, market demands, experience, job-related knowledge, and skills. The benefits available for this position include medical, dental, vision, 401(k) plan, life insurance coverage and PTO. For roles based in California, Colorado, Maryland, New Jersey, or Washington the base salary hiring range for this position is $140k - $200k per year.

For roles based in New York, the base salary hiring range for this position is $140k - $200k per year.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, veteran status, or any other status protected by applicable law. We are committed to providing an inclusive and diverse work environment.

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