Full-Time

Optical Modeling and Simulation Engineer

Updated on 9/3/2026

Furientis

Furientis

1-10 employees

Manufactures cost-effective ship-based interceptor munitions

No salary listed

No H1B Sponsorship

Los Angeles, CA, USA

In Person

On-site in Los Angeles; monthly weekend travel is required for test events and supplier engagements.

Bachelor's, Master's, PhD

Category
Aerospace Engineering (1)
Required Skills
Microsoft Azure
Python
Unreal Engine
Software Testing
CUDA
Git
Machine Learning
AWS
Computer Vision
Unity
Zemax
Google Cloud Platform

Get referred to Furientis

See people who can refer or advise you

Requirements
  • A B.S. in Optical Engineering, Physics, Electrical Engineering, Computer Science, or a related field is required.
  • Four to seven years of relevant experience are required, including at least two years working with synthetic or semi-synthetic training data for machine-learning or signal-processing algorithms and at least two years of classical electro-optical/infrared modeling and simulation.
  • First-hand experience with mid-wave infrared and long-wave infrared phenomenology, including target signatures, atmospheric propagation, plume and exhaust radiometry, and scene-background characterization is required.
  • Demonstrated responsibility for synthetic image datasets used by an algorithms team to train, evaluate, and test detection, acquisition, or tracking models is required.
  • Modern Python experience for science, engineering, and machine learning, including shipping engineering software rather than only notebooks, is required.
  • Hands-on experience with MODTRAN, MUSES, DIRSIG, or an equivalent scene and atmosphere toolchain is required.
  • CUDA and GPU programming proficiency is required, including writing, profiling, and optimizing kernels and reasoning about memory layout, occupancy, streams, and host-device transfer cost.
  • Experience managing datasets at scale and running CPU and GPU compute jobs on AWS, Google Cloud Platform, or Microsoft Azure is required.
  • Experience with Git, readable documentation, reviewable code, repeatable runs, and unit and end-to-end testing is required.
  • Hands-on experience with agentic coding tools such as Claude Code, Codex, OpenCode, or Kilo is required, including building, supervising, and reviewing artificial-intelligence-agent output.
  • Candidates must be U.S. Persons and eligible to access export-controlled information.
Responsibilities
  • Produce, validate, and manage the synthetic and semi-synthetic image datasets used by the algorithms team for training and evaluation, with disciplined provenance, ground truth, and metadata.
  • Build and maintain end-to-end seeker performance models spanning scene, atmosphere, optics, focal-plane array, readout integrated circuit, analog-to-digital converter, signal chain, and image processing in mid-wave infrared and long-wave infrared.
  • Build and validate signature models for target hardbody and plume or exhaust phenomenology.
  • Stand up and own the real-time, physics-correct engagement simulation pipeline integrating scene, sensor, signal chain, and engagement logic.
  • Integrate DTED and other georeferenced terrain data into scene generation while maintaining rigor around frames, projections, and accuracy budgets.
  • Run CPU and GPU compute at scale on cloud infrastructure to render imagery and produce datasets at the volumes required by the algorithms team.
  • Author CUDA-accelerated rendering and signal-chain kernels when simulation throughput requires it, and profile and optimize end-to-end pipeline throughput on multi-GPU systems.
  • Run Monte Carlo trade studies on optical, sensor, and signal-chain parameters, including focal-plane-array choice, integration time, f-number, field of view, noise-equivalent temperature difference, and noise-equivalent irradiance, and translate results into program-level design decisions.
  • Validate models against captured imagery from laboratory characterization, ground tests, and flight tests, and improve model fidelity over time.
Desired Qualifications
  • An M.S. or Ph.D. in Optical Engineering, Physics, Electrical Engineering, Computer Science, or a related field is preferred.
  • Experience with Unreal Engine or Unity for synthetic data generation, simulation, or visualization.
  • Radio-frequency or radar modeling and simulation experience for multimodal sensor-fusion programs.
  • Hardware-in-the-loop or scene-projection experience involving digital micromirror devices or infrared scene projectors.
  • Image processing and computer vision experience, including deep-learning detection and tracking.
  • Familiarity with Zemax or Code V sufficient to consume an optical design directly into the model.
  • Hands-on experience with NV-IPM, formerly NVTherm or NVThermIP, or an equivalent sensor-performance modeling tool.
  • Direct missile, munition, seeker, or guidance-program experience.
  • Experience with neural radiance fields or Gaussian Splatting.

Furientis develops affordable, ship-based defensive missiles to counter drone threats and address interceptor shortages. Its products are interceptor systems that use multimodal seekers and scalable solid rocket motors, designed for final assembly in about 30 minutes and high-volume production. The company emphasizes manufacturability and rapid, end-user-driven spiral development to improve capabilities, supported by a CRADA with the Naval Postgraduate School. Its goal is to reduce the cost of modern naval warfare by providing thousands of defense munitions per year to supplement existing systems.

Company Size

1-10

Company Stage

Series A

Total Funding

$30M

Headquarters

El Segundo, California

Founded

2025

Get referred to Furientis

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Silent Ventures led Furientis's $5 million round on May 14, 2026.
  • NPS CRADA and Tactical Missile Innovation Challenge finalist status validate military pull.
  • A 2026 follow-on funding signal suggests investors still price in rapid scale potential.

What critics are saying

  • Navy procurement stays captive to RTX and Lockheed Martin through 2027.
  • Missile qualification failures on seeker, SRM, or ship-launch integration kill production timelines.
  • Without a program of record, Furientis becomes a test article company, not a business.

What makes Furientis unique

  • Furientis ships ship-based interceptors built for manufacturability, not laboratory demo hardware.
  • Franzen and Simsarian bring Virgin Galactic, Virgin Orbit, and Castelion propulsion experience.
  • By May 2026, Furientis had six flight tests and ten static-fire tests.

Help us improve and share your feedback! Did you find this helpful?

Company News

AlphaMaven
Aug 7th, 2026
Furientis Secures $25 Million Funding Round, Attracts Benchmark Investment - GuruFocus

Furientis Secures $25 Million Funding Round, Attracts Benchmark Investment  GuruFocus

FinSMEs
May 18th, 2026
Furientis Raises $5M in Pre-Seed Funding

Furientis, a Los Angeles, CA-based defense technology startup developing cost-effective defensive munitions, raised $5M in Pre-Seed funding

The Outlook
May 14th, 2026
Furientis emerges from stealth to address U.S. Interceptor missile shortage.

Furientis emerges from stealth to address U.S. Interceptor missile shortage. GlobeNewswire | Furientis Today at 5:05am PDT LOS ANGELES, May 14, 2026 (GLOBE NEWSWIRE) - Furientis, a defense technology startup developing cost-effective defensive munitions, today emerged from stealth and announced a $5 million pre-seed fundraise. The round was led by Silent Ventures with participation from Bessemer Venture Partners, SV Angel and others, including repeat founders of companies including Anduril, Erebor, and Armada. The company is actively flight-testing ship-based interceptors designed for scalable production to supplement high-cost systems produced in limited volumes. Founded in 2025, Furientis is led by co-founders Brody Franzen and Aris Simsarian, who each bring a decade of experience in rocket design and testing at high-growth aerospace companies. Simsarian previously served as a Propulsion Engineer and Manager of Rocket Engine Test at Virgin Orbit, while Franzen held roles including Deputy Chief Engineer at Virgin Galactic and, most recently as a Senior Engineer at Castelion, a defense startup building hypersonic missiles. "During the 2024 Red Sea crisis, the U.S. Navy used more than 200 interceptor missiles to defend ships against Iranian-backed threats," said Franzen. "That matters not only because of the cost imbalance - using $4 million missiles to intercept $40,000 drones - but also because of the scale challenge, with only around 200 of these interceptors delivered annually versus their thousands per year. Our desire to build cost effective, scalable, and reliable interceptor systems en masse to address this deficiency is what inspired us to start Furientis." Furientis operates a 9,000-square-foot facility in Los Angeles and follows a rapid, end-user-driven spiral development model. Over the past six months, the company has conducted six flight tests and 10 static-fire tests of its demonstrator missile platform, reflecting a high cadence of development for early-stage defense systems. "To meet the demand stemming from recent stockpile shortfalls and to support long-term U.S. magazine coverage objectives, Furientis is rapidly building and testing its interceptors," said Jackson Moses, Managing Partner of Silent Ventures. "Brody and Aris have significant experience across design, propulsion, and testing, and they've structured the company around quick iteration in lockstep with end users. This combination gives them a legitimate path to scale production. Their low price point provides a credible pathway to procurement." Furientis has established multiple partnerships with the U.S. Navy and U.S. Army. Earlier this year, the company was selected as one of five finalists, alongside Anduril and Kratos, in the Tactical Missile Innovation Challenge led by the Naval Postgraduate School (NPS) in collaboration with the Office of Naval Research. The company also recently signed a Cooperative Research and Development Agreement (CRADA) with the NPS, focused on maturation of their system and refinement of government reference architectures. Furientis is continuing to develop its products in close coordination with end-user feedback. "Current conflicts continue to highlight the mismatch between the cost, availability, and scale of defensive systems and those of the threats they are designed to defeat," said Maj. Dillon Pierce, Ph.D., Chief Engineer, Marine Corps Rapid Capabilities Office, and Research Assistant Professor at the Naval Postgraduate School. "Forming CRADAs with industry partners like Furientis allows us to address that gap at the NPS through testing and rapid iteration of viable solutions. It also broadens the defense industrial base to deliver capabilities at greater speed and scale - a win-win." Boilerplate Furientis is a defense technology company building cost-effective ship-based interceptor systems designed for high-volume production and reliability. Founded by Brody Franzen and Aris Simsarian, former engineers from Virgin Orbit and Castelion, the company is focused on closing the cost and scale gap in U.S. defensive munitions. Its investors include Silent Ventures, Bessemer Venture Partners, Liquid 2, SV Angel, Humba Ventures, Multiball Capital, and others. Furientis operates a 9,000-square-foot facility in Los Angeles and maintains an active flight testing cadence. Media Contact Morgan Malone [email protected] This is a paid placement. For further inquiries, please contact GlobeNewswire directly.