Improbable LLC logo

Frontend Software Engineer

Improbable LLC

Hybrid
Arlington, VA
Full-time
Senior
3+ yrs
Salary not listedPosted 3mo ago

Real job — pulled straight from Improbable LLC’s careers page · Verified May 23, 2026 · No reposts.

Job description

Improbable LLC is hiring a Frontend Software Engineer — a full-time, based in Arlington, VA role. Apply directly on Improbable LLC's careers page below.

Frontend Software Engineer

Team: Engineering

Location: Arlington, VA (Hybrid)

Commitment: Full Time

Workplace Type: unspecified

Join Improbable U.S. Defense & National Security and you will help users leverage our synthetic environment development platform to plan and train for the most complex security threats in the world. Working along experts in AI, Machine Learning, computational modeling, and distributed systems, you will put multiplayer gaming technology to life-saving use.
Our mission? To enable the most realistic and effective virtual worlds ever experienced. Our team in Arlington, VA, and across several other locations in the US, is focused on applying our technology to solve real-world Defense and National Security problems.
At Improbable, you will be surrounded by people who want to improve everything and everyone around them, and who compel you to improve yourself. We’re motivated by the fulfillment of solving hard problems to achieve something profound and transformative. 
 

Your Mission

Our software engineers working in this area are delivery focused, working in diverse technical teams to design, build, deploy, and evaluate models and simulations and the technologies that power them. Our work delivers new solutions to some of the most important challenges we face today.

Areas for Impact

  • You will contribute to opinions, best practices, and technology choices to set us up for delivering the best possible solutions to our customers.
  • Operating in a PoC heavy environment, you will have a lot of scope for impact in a customer facing capacity. Helping to break through and define loose requirements as well as cutting through ambiguity
  • Working closely with product managers, designers and scientific modelers, you will to help determine and design what we will build.
  • Writing coherent, logically abstracted, well-tested, and well-structured code.
  • Collaborate closely and effectively with members of other engineering teams to find the best path to delivering a high quality solution.
  • From time-to-time you may be asked to assist with back-end engineering to ensure customer success.

We'd like to hear from you if you identify with the following

  • 3+ years of experience engineering Single Page Web Applications with a modern framework in complex environments. React preferred but will consider other UI frameworks like Vue or Angular.
  • Designed and engineered complex end-to-end flows of data from APIs to render large volumes of data on screen.
  • Have expertise in Typescript, React, Redux, this would be a major advantage.
  • Great experience working on high performance web applications.
  • Experience contributing to CI/CD practices to deploy and maintain scalable UI components and recommending and establishing UI development Best practices.
  • Have great experience in customer facing environments and feel comfortable in this capacity
  • Not afraid of ambiguity or loose client requirements. You are happy to forgo perfection over pragmatism in your work.
While we think the above experience could be important, we’re keen to hear from people that believe they have valuable experience to bring to the role. If you identify with the team and mission, but not all of our requirements, then please still apply!

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Frequently asked questions

What skills are required for Frontend Software Engineer at Improbable LLC?

The required skills for Frontend Software Engineer at Improbable LLC include: TypeScript, React, Redux, Vue.js, Angular, API, CI/CD.

What is the seniority level for Frontend Software Engineer at Improbable LLC?

Frontend Software Engineer at Improbable LLC is a Senior level position.

How do I apply for Frontend Software Engineer at Improbable LLC?

You can view the full description and apply for Frontend Software Engineer at Improbable LLC on EchoJobs: https://echojobs.io/job/improbable-llc-frontend-software-engineer-d6gew.