Senior Software Engineer, Java | Endpoint State & Control

**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\+\+**, **Golang** and **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 a