Jobs in the United States

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Added 40 mins ago
PN
Software Engineer II
Pacific Northwest National Laboratory
Richland, WA · Seattle, WA
- $109,000 USD / year
The AI and Data Analytics Division, part of the National Security Directorate, combines profound domain expertise and creative integration of advanced hardware and software to deliver…
Added 2 hours ago
Salesforce Solution Architect
Global Career Website
Remote, United States
…dedicated to transforming how the world interacts with technology, data, and creativity. Our role as trusted advisors in the digital landscape empowers the world’s most innovative brands…
Added 2 hours ago
R
Site Reliability Engineer (In-Person)
Refine
New York City, NY
- $95,000 to $125,000 USD / year
We are seeking a DevOps/Site Reliability Engineer to join our team. This role will focus on building and maintaining our continuous integration/deployment pipelines, ensuring high…
Added 2 hours ago
Head of Engineering - Custody
Prospex CRM
United States
Has run an acquisition integration: M&A engineering diligence and post-deal team merge. Has shipped at least one engineering re-org without losing more than two Senior-plus engineers.…
Added 2 hours ago
Head of Engineering
Prospex CRM
United States
Has run an acquisition integration: M&A engineering diligence and post-deal team merge. Has shipped at least one engineering re-org without losing more than two Senior-plus engineers.…
Added 2 hours ago
Engineer II, Software Engineering
Red River
Remote, United States
Ensure test procedures adequately address system requirements, functionality, integration, and production acceptance criteria.
Added 3 hours ago
Software Engineer II
Amentum
Bismarck, ND
The Software Engineer II will perform full stack development with C# program, ReactJS, MVC, Linq, and rest API development in NET Core platform. This position is US remote teleworking…
Added 4 hours ago
Associate GNC Engineer
Mavensoft Technologies, LLC.
Chandler, AZ
Title : Guidance Navigation Control Engineer II
Added 4 hours ago
MT
Engineer - Life Safety Systems & Telecom (NY)
Micron Technology
Clay
- $82,000 to $169,000 USD / year
As a Fire Alarm / Life Safety Systems Engineer, you will provide technical leadership for life-safety systems across construction projects. You will independently evaluate developments,…
Added 4 hours ago
Principal Network Engineer - Routing & Switching
LEIDOS, INC.
Odenton, MD
Leidos is seeking a Principal Network Engineer specializing in routing and switching to serve as the senior technical authority for the routed and switched enterprise. The role is…
Added 4 hours ago
Senior DevOps Engineer
LEIDOS, INC.
Remote, United States
The Mission Enablement Center (MDEC) is seeking an experienced Senior DevOps Engineer to support its Cloud Engineering team. This hands-on position supports the design, deployment,…
Added 4 hours ago
Principal Network Engineer - Wireless
LEIDOS, INC.
Odenton, MD
Leidos is seeking a Principal Network Engineer – Wireless to lead engineering, deployment, and modernization of a large-scale, geographically distributed enterprise wireless network…
Added 5 hours ago
Systems Engineer Sr Principal
SAIC
Aurora, CO
SAIC is looking for a Systems Administrator/Network Engineer/Spacecraft Command/Control Scheduler. Duties will include coordinating and managing end to end architecture by scheduling…
Added 5 hours ago
Staff Mechanical Engineer (Flexible Instruments)
Intuitive
Sunnyvale, CA
The Staff Mechanical Engineer, Advanced Energy, will serve as a technical and design lead for the development of advanced energy products and/or sub-systems at Intuitive. This role is…
Added 5 hours ago
Software Engineer, Senior | Top Secret clearance w/SCI eligibility
AMERICAN SYSTEMS
Arlington, VA
AMERICAN SYSTEMS, a 100% employee-owned federal contractor, is seeking a Software Engineer to support the Mission Engineering and Integration Team in Arlington, VA. You will design,…
Added 5 hours ago
Forward Deployed Engineer (FDE), AWS Forward Deployed Engineering, US Government
Amazon Web Services, Inc.
Jessup, MD · Arlington, VA · Seattle, WA · Denver, CO · Herndon, VA
…retrieval pipelines, workflow automation, API orchestration layers, data integration. Solve difficult problems with visible risks or roadblocks, bringing clarity and identifying simple…
Added 5 hours ago
FE
AI Engineer II
Federal Express Corporation
Memphis, TN · Coraopolis, PA · Plano, TX
- $11,410.38 USD / month
The AI Engineer is responsible for designing, developing, deploying, and maintaining artificial intelligence and machine learning solutions that support intelligent automation, predictive…
Added 5 hours ago
Test Engineer - Electric Propulsion, Satellites (Starlink)
SpaceX
Redmond, WA
TEST ENGINEER – ELECTRIC PROPULSION, SATELLITES (STARLINK)
Added 6 hours ago
Electrical Integration and Test Engineer II
Voyager Technologies, Inc.
Pittsburgh, PA
The Electrical Integration & Test Engineer for Voyager Lunar Systems is responsible for test operations, ownership of test electrical systems, and development of integration and test…
Added 6 hours ago
Test Engineer II
Arcfield
Home, NY
We are seeking a detail-oriented and proactive Test Engineer II to join our engineering team. In this role, you will be responsible for designing, developing, and executing both manual and…
Added 6 hours ago
UO
Engineer II, Autonomous Systems - Missouri Institute for Defense & Energy
University of Missouri System
MO
- $75,000 to $80,000 USD / year
The Engineer II - Autonomous Systems will support the development, integration, and testing of software for autonomous drone navigation and mission execution. The position will build…
Added 6 hours ago
US
Mechanical Engineer II, Imaging Payloads
Urban Sky
Denver, CO
- $115,000 to $130,000 USD / year
…build, operate, and sell stratospheric balloon systems. The data we collect supports a wide range of applications, from real-time wildfire monitoring to urban mapping. Our technology is…
Added 6 hours ago
Manufacturing Electrical Engineer
SEDAA
Plano, TX
Job title - Manufacturing Electrical Engineer
Added 6 hours ago
Systems Engineer II
RTX
United States
Document and Communicate: Develop integration documentation, execute plans, analyze data, verify requirements and effectively communicate results to leadership and stakeholders.
Added 6 hours ago
Scrum Master –Software Engineer II
RTX
United States
…Raytheon is looking for a Software Scrum Master (SM) – Software Engineer II for the AN/TPY-2 radar program Orcas agile software team. The Orcas team provides subject matter expertise for…

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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