Senior Software Engineer, Java - Endpoint State & Control Team

NinjaOne

34d•$140,000 - $200,000•Remote

About The Position

NinjaOne is establishing a new Endpoint State and Control team and is seeking a Senior Software Engineer, Java to contribute to its server-side foundation. This is a greenfield project where the engineer will define the service architecture, API contracts, and data storage strategy from scratch. The role involves working closely with engineers responsible for the low-level agent/driver and the management console UI. The position requires comfort with ambiguity, evolving requirements, and making architectural decisions with incomplete information. The engineer will design systems for policy management, large-scale telemetry ingestion from endpoints, and multi-tenant isolation for a global platform. This role offers the opportunity to shape a backend system from its initial data model and API contract, utilizing AI tools in the development workflow. The company is flexible regarding remote work for candidates in specific US states (CA, CO, CT, FL, GA, IL, KS, MA, MD, ME, NJ, NC, NY, OH, OR, TN, TX, VA, and WA). Physical offices are available in Austin, TX, and Tampa, FL, for those preferring a hybrid option. NinjaOne's technology stack includes Java, Kotlin, C++, Golang, and Postgres, supporting millions of user endpoints on AWS. Experience with large-scale datastore bottlenecks, asynchronous application design, and client-server architecture is beneficial.

Requirements

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 Haves

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
Experience 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

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