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Electronic Warfare DevOps Engineer
Leidos
Huntsville, AL
Leidos’ Defense Open Air Sensors Division is seeking an Electronic Warfare DevOps Engineer to join a diverse team to create unique solutions for complex sensor and radar orientated…
Added 6 mins ago
TA
2027 Remote Sensing Architecture Technical Engineer
The Aerospace Corpor
Colorado Springs, CO
- $100,000 to $140,000 USD / year
We are seeking a Remote Sensing Architecture Technical Engineer that will make use of sophisticated modeling and simulation tools in support of requirements verification,…
Added 6 mins ago
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Flight Dynamics Engineer
The Aerospace Corpor
Colorado Springs, CO
- $132,900 to $249,600 USD / year
Project Leader/Senior Project Engineer to join the EOFDD team. The selected candidate will provide expertise for a wide range of customer flight mechanics needs, supporting both analysis…
Added 6 mins ago
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2027 Trajectory Optimization Engineer
The Aerospace Corpor
Colorado Springs, CO
- $86,600 to $150,400 USD / year
Create, augment, and leverage flight mechanics centric software capabilities as stand-alone tools and ready-to-integrate submodules
Added 24 mins ago
Manufacturing Engineer 2 - Unmanned Underwater Vehicles (UUV) 31057
HII
Pocasset, MA
Support tooling, fixture, and test equipment development under senior engineer direction.
Added 24 mins ago
Systems Engineering Manager (ONSITE)
Collins Aerospace
Marlborough, MA
…engineering professionals. The Systems Engineering Manager is a senior engineer on site, responsible for the engineering integrity of the systems, equipment and product covered by the…
Added 41 mins ago
Sr. Electrical Engineer
BB&E
Jacksonville, FL
BB&E is seeking a dynamic and detail-oriented Senior Electrical Engineer to join our team supporting the Naval Facilities Engineering Systems Command Southeast (NAVFAC SE). The selected…
Added 41 mins ago
Senior Geotechnical Engineer
BB&E
Norfolk, VA
BB&E is seeking a dynamic and detail-oriented Senior Geotechnical Engineer to join our team, supporting facilities design and construction projects for NAVFAC Atlantic (LANT).
Added 41 mins ago
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Senior Fire Protection Engineer
BB&E
Norfolk, VA
- $135,000 to $165,000 USD / year
BB&E is currently looking for a Senior Fire Protection Engineer to provide Fire Protection Engineering design support services to support Design-Bid-Build and Design-Build projects and…
Added 1 hour ago
Production Engineer Senior Specialist
Toyota Boshoku America Inc
Hopkinsville, KY
Added 1 hour ago
Senior Closures Systems Sealing Engineer
Ford Motor Company
Allen Park, MI
The Senior Closures Systems Sealing Engineer will be a key member responsible for the design, development, and integration of closure mechanisms and primarily sealing for Advanced EV…
Added 1 hour ago
Senior Network Infrastructure Engineer
Peckham, Inc.
Lansing, MI
…impact on people, and uplift our community.A Brief OverviewThe Senior Network Infrastructure Engineer will leverage their comprehensive expertise in enterprise network environments. Key…
Added 1 hour ago
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Senior Forward Deployed Engineer
Sinch America Inc.
Denver, CO
- $155,000 to $186,000 USD / year
We are hiring a Forward Deployed Engineer to make those integrations work in the real world. You will embed with customer engineering and operations teams, use modern AI development tools…
Added 2 hours ago
Enterprise Security Systems, Senior Engineer II
Sempra
San Diego, CA
Leads the procurement, installation, and life-cycle maintenance of software for operations.
Added 2 hours ago
Senior Systems Engineer (IT Infrastructure)
Avint
Tysons, VA
Avint is seeking a highly skilled Senior Systems Engineer to support a mission-critical program within the National Capital Region. This role focuses on the design, implementation,…
Added 2 hours ago
Principal Automation Engineer Optical Inspection SME
J&J Family of Companies
Wilson, NC
Senior Automation Engineer will lead internal team members, suppliers, OEMs, system integrators, Digital/IT partners, automation-system owners, and cross-functional stakeholders to deliver…
Added 2 hours ago
Network Engineer
Avalore, LLC
Arlington, VA
The Network Engineer will design, implement, and maintain the WDP System's network infrastructure, ensuring secure and efficient connectivity within cloud and hybrid environments. They will…
Added 2 hours ago
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Senior Software Engineer - CoreAI
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
App Service is a Platform as a Service (PaaS) offering and one of the top services in Azure all-up. As a Senior Software Engineer - CoreAI, you will have a chance to work on the largest…
Added 2 hours ago
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Software Engineer II
Microsoft
WA · CA · NY · Redmond, WA · Mountain View, CA · Redmond · Mountain View · New York
- $102,100 to $219,200 USD / year
We are looking for a Software Engineer II to join the Special Projects and Resources Team (SPARTANs) in M365 Core – Substrate. SPARTANs take on strategic projects and difficult engineering…
Added 2 hours ago
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Senior AI Engineer
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
…organizational context, and complete complex workflows. As a Senior AI Engineer on the Microsoft Office AI team, you will bring these experiences to hundreds of millions of…
Added 3 hours ago
Senior Electrical Test Engineer
Dayton Power & Light Company
Dayton, OH
Added 3 hours ago
Staff Software Engineer, Foundations
Atria Health and Research Institute
Remote, United States
Atria Health is seeking a Staff Software Engineer for our Foundations team, working across Platform, DevOps, and Data Engineering.
Added 3 hours ago
Staff Software Engineer, Foundations
Atria Health and Research Institute
Remote, United States
Atria Health is seeking a Staff Software Engineer for our Foundations team, working across Platform, DevOps, and Data Engineering.
Added 3 hours ago
AT
Machine Learning Senior Software Engineer
Akamai Technologies, Inc.
Jefferson City, MO
- $121,400 to $218,600 USD / year
As an ML Senior Software Engineer, you will build and operate systems responsible for model validation, quantization, and safety across the AIC. You'll develop pipelines that scan models…
Added 4 hours ago
Senior .Net Software Engineer
Aristotle
Remote, United States
As a Senior .Net Software Engineer for PredictIt you will get to work on challenging and rewarding projects across the tech stack: from creating innovative web experiences to redesigning…

Lumbra

Frontend Engineer, Core Platform

Arlington, VA, United States

$120,000 to $300,000 USD / year

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Job details

Pay: $120,000 to $300,000 USD / year
Posting language: English
Posted: Nov 4, 2026

Original job description

About Lumbra

Lumbra builds the vendor-neutral operating system for agentic AI in high-consequence environments. In our first ten months we won four fully competed prime contracts across the U.S. Government, every one of them deploying into classified spaces. We are live on JWICS. We were selected from a field of 200+ companies for a defense innovation challenge and won it. We beat two established defense primes on the same program and earned the follow-on, now in execution.

About the Role

Nebula, our agentic harness, turns days of manual synthesis into minutes of analysis. Whether analysts trust it depends heavily on the interface: how an agent's work streams in, how its sources and reasoning are shown, and how quickly someone can move through dense, connected data under pressure.

We want a frontend engineer to own that experience. You build the React and TypeScript application analysts use every day, make it fast and legible, and make sure it works the same in commercial cloud and on disconnected, classified networks.

This role is on site in Arlington, Virginia. It is not eligible for remote or hybrid work.

How the Role Is Structured

~70% building. Product features in React and TypeScript, from conversation interfaces to workflow and graph views.
~20% quality and performance. Testing, render performance, accessibility, and the shared components the rest of the team builds on.
~10% users and product. Working with Forward Deployed Engineers and analysts to turn feedback from the field into interface changes.

What You'll Own

Conversation and streaming interfaces for agent output, including tool calls, citations, confidence, and long-running work that has to recover cleanly from timeouts and reconnects.
Workflow and knowledge-graph visualization that keeps dense analytical data legible.
Front-end architecture: state management, data fetching, API contracts with the backend, and patterns that survive constant change.
Shared components and the design system in code, so new features look and behave consistently.
Performance and accessibility, measured rather than assumed. You profile before guessing and treat slowness as a defect.
Front-end testing: component, integration, and end-to-end tests that cover the spec rather than the implementation.
Builds that work disconnected, with no reliance on external CDNs, fonts, or services, so the same app runs inside air-gapped deployments.

You'll Work Alongside

CIA officers, MIT engineers, Special Operations combat veterans, and applied AI engineers from frontier labs including Anthropic and Google. You will make decisions that immediately affect national security. You will own part of a company early and when it matters.

What This Role Is Not

A pixel-pushing role. You shape the experience, not just implement mockups.
A role where performance is someone else's problem.
A backend role. You'll read and shape API contracts, but your depth is the front end.

Required Qualifications

Real depth shipping production front-end software in React and TypeScript. We care about what you have owned and the depth of your experience, not a year count; engineers with 2+ years who have owned meaningful front-end systems are welcome.
Experience building interfaces for real-time or streaming data, such as WebSockets or server-sent events, including the state model behind them.
Real depth in component design, state management, and render performance, with examples of problems you profiled and fixed.
Clean, well-tested code, including component and end-to-end tests.
Enough backend fluency to read and shape API contracts; Python is a plus.
Comfort taking a loose ask and turning it into a working interface without a finished design.
A humble, hands-on approach.
Willingness to work on site in Arlington, Virginia.

Preferred Qualifications

Experience building LLM or agent interfaces, including streaming output, tool-call visualization, and citation surfacing.
Experience with data visualization or graph exploration libraries.
Experience building or maintaining a design system.
Experience with accessibility (WCAG) in complex applications.
Experience building analytical, intelligence, financial, or developer-facing tools.
Experience shipping front ends into restricted or offline environments.
An active U.S. security clearance, or eligibility to obtain one.

Compensation

The base salary range for this role is $120,000 to $300,000, spanning our Engineer II and Senior Engineer levels. Where an offer lands depends on scope, autonomy, and technical capability, which we assess through the interview process rather than by years or title. Our ranges are a real guide, and we are flexible for the right person: if your experience clearly exceeds this role's scope, we will consider you at a higher level, with that level's range. Base salary is one part of total compensation, alongside equity and the benefits below.

What We Offer

Health, dental, and vision insurance. 99% of your premiums covered, and 100% of your dependents' premiums.
Optional HSA plan. Lower premium, HSA eligible, fully portable, self-directed or managed.
Health Reimbursement Account for qualified healthcare expenses.
Life insurance of $150,000 plus AD&D, 100% company paid.
401(k) with a 100% match on the first 6%, immediately vested. No cliff, no waiting period. Yours from day one.
Wellhub Gold. Everything from Gold's Gym to Lifetime, fully covered, plus [solidcore], F45, and hundreds of other studios.
Unlimited PTO. Real time off, not accrual-based. Take what you need, no counting required.
Every federal holiday, plus additional paid days off over the winter break.
Supportive leave of absence program, including time off for military service, medical events, and parental leave.
Breakfast, lunch, and endless snacks every day you are in the office.
Pre-tax commuter benefits.
Company phone plan. A new iPhone, fully company paid.

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