Onebrief is collaboration and AI-powered workflow software designed specifically for military staffs. By transforming this work, Onebrief makes the staff as a whole superhuman - meaning faster, smarter, and more efficient.
We take ownership, seek excellence, and play to win with the seriousness and camaraderie of an Olympic team. Onebrief operates as an all-remote company, though many of our employees work alongside our customers at military commands around the world.
Founded in 2019 by a group of experienced planners, today, Onebrief’s team spans veterans from all forces and global organizations, and technologists from leading-edge software companies. We’ve raised $123m+ from top-tier investors, including Battery Ventures, General Catalyst, Insight Partners, and Human Capital, and today, Onebrief is valued at $1.1B. With this continued growth, Onebrief is able to make an impact where it matters most.
About the Role:We’re looking for a Senior Performance Testing Engineer to lead the design, development, and execution of our performance and scalability testing strategy. You’ll partner closely with Product and Engineering teams to ensure our mission-critical platform is reliable, performant, and ready to scale with our rapidly growing user base.
In this role, you’ll define what “performance quality” means at Onebrief, contributing to frameworks, metrics, and automation that allow us to understand and improve system performance continuously. You’ll introduce best practices around performance testing, help integrate them into CI/CD, and mentor others in data-driven performance engineering.
This is a foundational role that will shape how we think about performance, reliability, and quality as we scale our product and infrastructure.
About You:You’re an experienced performance engineer who thrives on data, automation, and continuous improvement. You understand that performance isn’t just a test at the end — it’s a culture that’s built into design, code, and delivery from day one. You enjoy collaborating with engineers, architects, and DevOps teams to identify bottlenecks, improve observability, and scale systems efficiently.
You’re motivated by impact, eager to contribute to a high-performing team, and excited by Onebrief’s mission to empower military staff with world-class software.
What You’ll Do:Lead performance testing strategy, planning, and execution using k6 (open-source and cloud).
Design and implement robust, reusable, and parameterized performance test scripts in Typescript.
Simulate realistic load, stress, and soak test scenarios across APIs, web applications, and microservices.
Analyze results to uncover bottlenecks and performance issues across front-end, backend, and database layers.
Partner with Developers, DevOps, and Architects to integrate performance objectives into the CI/CD pipeline.
Work with stakeholders to define and maintain performance SLAs and ensure adherence across environments.
Collaborate with the Quality Enablement team to evolve our performance observability, tooling, and metrics strategy.
Mentor engineers on performance testing best practices, code efficiency, and scalability principles.
Present detailed reports and insights that guide product and infrastructure improvements.
Required:
7+ years of experience in performance testing and engineering.
Strong hands-on experience with k6, including scripting, scenario modeling, and analysis.
Proficiency in JavaScript/Typescript for k6 scripting.
Experience with Grafana, Prometheus, InfluxDB, or similar monitoring and metrics tools.
Strong understanding of HTTP, REST, WebSockets, and microservices architectures.
Solid experience integrating performance tests in CI/CD pipelines (GitHub Actions, GitLab CI, or Jenkins).
Experience with cloud environments (AWS, Azure, or GCP) and distributed load testing setups.
Excellent analytical, troubleshooting, and communication skills.
Preferred:
Experience with additional performance tools (e.g., JMeter, Gatling, Artillery).
Familiarity with playwright, either in e2e or in Artillery/K6/Locust
Familiarity with Docker and Kubernetes for containerized test environments.
Experience building performance dashboards and observability pipelines.
ISTQB Performance Tester certification or similar credentials.
You are obsessed with creating value for real users.
You are ambitious, scrappy, and a creative problem-solver.
You learn quickly, work iteratively, and naturally seek collaboration.
You approach your work with integrity, intellectual honesty, and low ego.
You communicate frankly, clearly, and succinctly.
You thrive as a self-starter, embracing autonomy and ambiguity.
Notice to Third Party Recruitment Agencies
Please note that Onebrief does not accept unsolicited resumes from recruiters or employment agencies. In the absence of an executed Recruitment Services Agreement, there will be no obligation to any referral compensation or recruiter fee. In the event a recruiter or agency submits a resume or candidate without an agreement Onebrief explicitly reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency. Any unsolicited resumes, including those submitted to hiring managers, shall be deemed the property of Onebrief.
Top Skills
What We Do
Before Onebrief, military planning and collaboration was slow, inefficient, and resource-intensive. Building slides with no version control as partners collaborated would have staffs spend weeks or months on a single product or document.
With Onebrief, these workflows are now simple and collaboration between large commands is efficient. Staff optimization is the key to building a more resilient, more effective military. Today Onebrief users report at least 2x time savings - and growing.
Onebrief is a first of its kind software for the military. While many others have tried to build a solution for this problem, Onebrief’s “card” structure for reusing data and enabling real time updates is what makes this possible. Core features and attributes that make this platform powerful include:
- Global Collaboration
- Real-Time Updates
- AI Automation
- Interoperability + Integrations
- Deployable across Secret and Top Secret Networks
Mission Driven
Onebrief is composed of professionals from backgrounds of all kinds - spanning veterans across forces and organizations, and technologists from leading-edge software giants.
Onebrief is more than just a software platform; it's a mission-driven company dedicated to improving the efficiency and effectiveness of military planning. By joining the team, you'll contribute to solutions that directly support national security and the work of service members.
Your work directly addresses critical challenges that military planners and operators face daily. Every line of code and every design decision contributes to real-world outcomes.
The software was designed and built by a team of experienced planners - lending a nuanced perspective on the challenges our partners face. Our team embeds alongside users - from
the Pentagon to the Indo-Pacific - to build a platform that meets their unique needs.
Rapid, Strategic Growth
Our users love the platform and growth is scaling, most recently reporting operational usage growth at a 19,600% annualized rate. Stronger utilization is underway and we’re at an exciting period of advancement.
As a rapidly growing organization, you'll directly influence its direction and long-term success. Over the past year we’ve seen exciting growth metrics:
First, our headcount has grown 150% YoY to keep pace with our product advancement and customer growth.
Our funding has skyrocketed, most recently raising our Series C, led by top-tier venture investors who have deep expertise in defense tech.
Why Work With Us
Impactful Transformation
At Onebrief, we believe optimizing the military staff is the most impactful thing - on a per-dollar basis - in defense tech right now. This has the potential to save the department of defense billions of dollars and save users countless hours. It’s a longstanding problem that we’re uniquely positioned to solve.
Gallery
Onebrief Offices
Remote Workspace
Employees work remotely.
