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Senior Software Engineer, Backend jobs in United States
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Onebrief · 1 day ago

Senior Software Engineer, Backend

Onebrief is a collaboration and AI-powered workflow software company designed specifically for military staffs. They are seeking a Senior Backend Engineer to design, build, and operate core systems of their platform, focusing on performance, reliability, and operational excellence.
National DefenseEnterprise SoftwareSoftwareInformation TechnologyMilitaryProductivity Tools

Responsibilities

Design, build, and maintain backend services that power mission-critical platform functions within your team’s scope
Optimize data models and system performance to improve scalability, reliability, and maintainability
Work across APIs, databases, and deployment systems to deliver cohesive, production-ready solutions
Diagnose and resolve performance, scalability, and reliability issues in production
Contribute to architecture discussions and collaborate on high-availability system design
Implement and improve monitoring, alerting, and operational practices
Balance long-term code quality with pragmatic delivery to meet team goals

Qualification

Backend developmentNode.jsPythonJavaGoAPI designData modelingDistributed systemsRelational databasesNon-relational databasesDockerKubernetesAWSGCPAzureCI/CD pipelinesAutomated testingMicroservicesObservability stacksIncident responseCommunicationProblem-solving

Required

6+ years of experience in backend software development, with strong proficiency in one or more backend languages (e.g., Node.js, Python, Java, Go)
Deep understanding of scalable API design (REST, GraphQL, gRPC), data modeling, distributed systems, and performance/reliability best practices
Hands-on experience with relational and/or non-relational databases, containerization, and cloud infrastructure (Docker, Kubernetes, AWS/GCP/Azure)
Experience owning and delivering complex, well-scoped backend initiatives within a team
Strong architectural judgment within team boundaries and ability to contribute meaningfully to system design discussions
Ability to recognize bottlenecks and adjust course when needed; willingness to escalate when complexity expands significantly beyond team scope
Experience collaborating across teams (i.e., product, frontend, and DevOps) to deliver high-quality, end-to-end solutions
Experience operating in moderate ambiguity, maintaining steady execution and clear communication across PRs and design discussions
Track record of delivering complex projects in fast-paced or demanding environments

Preferred

Background in mission-critical domains
Experience with CI/CD pipelines, automated testing, and deployment workflows
Prior experience driving architecture and system design decisions for complex, high-scale applications
Knowledge of event-driven and service-oriented architectures (Kafka, Pub/Sub, microservices)
Familiarity with observability stacks (logging, metrics, tracing) and incident response practices
Experience with data sharding and logical data partitioning strategies
Experience with message queues, streaming platforms, or event buses
Experience working with security/compliance requirements (e.g., SOC2, FedRAMP, HIPAA)

Company

Onebrief

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Onebrief is an AI-powered platform that supports operational planning, collaboration, and decision workflows for military and command teams.

Funding

Current Stage
Late Stage
Total Funding
$311.04M
Key Investors
Battery Ventures,Sapphire VenturesBattery VenturesGeneral Catalyst,Insight Partners
2026-01-13Series D· $200M
2025-06-16Series C· $23.58M
2025-01-28Series C· $50M

Leadership Team

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Grant Demaree
CEO and co-founder
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Company data provided by crunchbase