---
title: 'Model Engineer at Improbable 2'
canonical: 'https://feeny.ai/job/model-engineer-improbable-2-arlington-9zywg5sy33dx'
type: 'job'
last_seen: '2026-09-07'
---

# Model Engineer at Improbable 2

- **Company:** Improbable 2
- **Location:** Arlington, VA
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2022-10-28
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/improbable-2/0a20c258-2a51-4e64-adaf-e887dfb07e69

## Job description

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 is to build robust, performant, scalable scientific models that support our entire product offering and facilitate next generation decision support. We are a diverse team of engineers and applied scientists working very collaboratively, internally and with our customers.  We are friendly and inclusive; driven to take synthetic environments to the next level.

We focus on modularity and reusability to create complex systems from combinations of simpler systems, such as modeling social systems as goal oriented actors in a synthetic environment with imperfect information. Our model engineers take cutting-edge domain specific research and combine it with best practices, pragmatism, and creativity to run our complex realistic simulations as fast as possible; solving our customers’ problems and supporting their decision-making processes.

Areas for Impact

- Contributing improvements to practices and processes of a high performing team.
- Maturing prototype models so that they are scalable, robust and performant.
- Developing and implementing algorithms which result in plausible modeled behavior.
- Building pipelines to extract, synthesize and integrate data from various sources, making it available to simulation engines and user interfaces.
- Building tooling that enables model developers to do their work quicker and better.
- Measuring, tracking, and improving performance of models so that we can reach new levels of speed and scale.
- Taking ownership of verifying the reliability of the models that we create.
- Working closely with our customers to understand their problems and develop use cases for Improbable technology.

We would like to hear from you if you identify with the following

- You have 3+ years professional experience (or an advanced degree) in model and simulation development.
- Proficient coding ability - with fluency in at least one relevant programming language and the openness to learn and adapt to a variety of languages. We use Python, Java, C++, C#, and many related tools and libraries.
- You are familiar with the more advanced features of software design (e.g. decorators, generators, objects/classes, system and API design) and data science/simulation techniques and libraries (e.g. agent based modeling, algorithm complexity, data frames, graph theory, machine learning).
- You are proactive and autonomous, able to identify the most impactful work among competing requirements.
- You have a strong sense of intellectual curiosity; ready to hone your craft and inspire others to be better engineers.
- You enjoy pair programming, collaboration, and are passionate about sharing knowledge with and learning from others.
- You are naturally pragmatic, balancing fast-moving project requirements with quality and good practices.

## About Improbable 2

## Company Overview
- **One-liner**: Improbable is a venture builder and technology company that creates large-scale virtual worlds, simulation platforms, and synthetic environments for gaming, defense, and the metaverse; its U.S. Defense & National Security division (sometimes referred to as “Improbable 2”) applies these capabilities to solve complex real-world security challenges.
- **Entity Type**: Private (over $854M total funding, 7 rounds)
- **Headquarters**: London, England, United Kingdom (primary) / Arlington, Virginia, United States (U.S. Defense & National Security hub)
- **Founded**: 2012
- **Founders**: Herman Narula, Peter Lipka, Rob Whitehead

## Core Business
- **Primary industries**: Software development, simulation & modeling, defense technology, metaverse infrastructure, AI, Web3
- **Target customers**: B2B – enterprise and government clients, especially defense and national security agencies; also gaming studios and metaverse ventures
- **Mission statement**: “To enable the most realistic and effective virtual worlds ever experienced.”

## Products & Services
- **SpatialOS**: A platform for building and running massive, persistent virtual worlds (used in gaming and simulation).
- **Morpheus**: Technology that powers record-setting live multiplayer experiences (e.g., ScavLab with 4,000+ players, metaverse concerts).
- **M**: A product for creating synthetic environments and decision-support simulations.
- **Synthetic Environment Development Platform**: The core offering for U.S. Defense & National Security – used to plan, train, and simulate complex security threats by combining AI, ML, computational modeling, and distributed systems.
- **Venture Builder Services**: Improbable incubates and spins out ventures in AI, Web3, and the metaverse, providing capital, expertise, and hands-on support.

## Market Standing
- **Valuation / Market Cap**: Not publicly disclosed
- **Key Metric**: Annual Revenue (parent company): GBP 579.9K (latest available data) – note: this figure may be outdated or reflect only a portion of the business; total funding: **$854M** (7 rounds, including $502M led by SoftBank in 2017)
- **Notable Investors / Partners**: Andreessen Horowitz, SoftBank, Horizons Ventures, Temasek
- **Growth Signals**:
  - Headcount grew 109.4% YoY (currently ~87 employees, distributed across 11 countries)
  - 17 ventures created, including 7 exits
  - Active expansion of U.S. Defense & National Security team (multiple open roles for Applied Scientists, Model Engineers, Software Engineers)
  - Proven record of delivering large-scale live simulations (4,000+ player events)

## Competitive Advantages
- **Deep technical moat** in multiplayer networking, distributed simulation, and agent-based modeling, originally developed for gaming and now applied to defense.
- **First-mover credibility** in the intersection of gaming technology and national security.
- **Strong investor backing** and relationships with both commercial and government clients.
- **Proprietary platforms** (SpatialOS, Morpheus, M) that are difficult to replicate and offer unique scalability.

## Strategic Focus
- **Venture building**: Incubating and scaling autonomous companies in AI, Web3, and the metaverse.
- **Defense & national security**: Applying synthetic environment technology to help clients “interrogate the past, understand the present, and predict the future.”
- **Technology modernization**: Moving from a pure technology provider to a venture builder model, spinning out successful internal teams.

## Why Work Here
- **Impactful mission**: Work on technology that directly supports national security and complex decision-making – “put multiplayer gaming technology to life-saving use.”
- **Cutting-edge tech stack**: Work with Python, R, Java, C++, C#, Unity, Unreal, and probabilistic programming in a collaborative, interdisciplinary environment.
- **Collaborative culture**: Teams of engineers and applied scientists work closely with customers and product teams; emphasis on autonomy, thought leadership, and continuous learning.
- **Growth opportunity**: Rapidly growing U.S. Defense team (roles in Arlington, VA and other U.S. locations) with room to shape the direction of modeling and simulation.
- **Work model**: Not explicitly stated, but roles appear to be on-site/hybrid in Arlington, VA; parent company has offices in London, Greater London, and multiple international locations.

## Sources
1. [Improbable – About Us](https://www.improbable.io/about-us)
2. [Improbable – LinkedIn](https://linkedin.com/company/improbable)
3. [Improbable LLC – Applied Scientist Job Description](https://jobs.lever.co/improbable-2/0a7e87f3-d3ed-45a1-9c05-330797824b46)
4. [Improbable LLC – Model Engineer Job Description](https://jobs.lever.co/improbable-2/0a20c258-2a51-4e64-adaf-e887dfb07e69)
5. [Improbable LLC – Frontend Software Engineer Job Description](https://jobs.lever.co/improbable-2/01105706-e9fc-413c-bfbb-11ccd011fc65)

## Other roles at Improbable 2

- [Security and Compliance Lead](https://feeny.ai/job/security-and-compliance-lead-improbable-2-arlington-jtajvt9x62z5) — Arlington, VA
- [Applied Scientist](https://feeny.ai/job/applied-scientist-improbable-2-arlington-xz900z8rxeyr) — Arlington, VA
- [Frontend Software Engineer](https://feeny.ai/job/frontend-software-engineer-improbable-2-arlington-my4r310vg6mv) — Arlington, VA