Jobs in the United States

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Added 2 mins ago
Senior Security GRC Engineer, AI & Automation
American Express Global Business Travel
Des Moines, IA
AmexGBT’s Security GRC team is looking for a talented Senior Security GRC Engineer to design, build, and scale automation and AI-driven solutions that modernize our governance, risk, and…
Added 2 mins ago
Associate Software Engineer
Highmark Health
Des Moines, IA
This job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. Responsible for…
Added 2 mins ago
Director - Customer Response Engineering
Trellix
Des Moines, IA
…process trace, or a packet capture and argue root cause with senior engineers. Your first move on a hard problem is to ask how AI can shorten…
Added 2 mins ago
Lead AI and Data Science Engineer II- Marketing Measurement
Deloitte
Davenport, IA · Des Moines, IA
…collaborative environment? As an experienced Lead AI and Data Science Engineer II - Marketing Measurement, you will have the opportunity to share new ideas and collaborate on projects as a…
Added 29 mins ago
Senior Continuous Improvement Program Manager - Oahu
Hawaiian Electric
Pearl City, HI
…excellence strategy for Generation Division, driving sustainable performance improvement, operational efficiency, and cultural transformation through Lean, advanced problem‑solving…
Added 42 mins ago
Senior Mechanical Engineer with CFD Expertise
Applied Research Associates, Inc.
Panama City, FL
ARA’s Engineering Science Division is seeking an experienced mechanical engineer with computational fluid dynamics (CFD) expertise to support the design, development, prototyping,…
Added 42 mins ago
Senior Specialist, Integration & Test Engineer
L3Harris
Melbourne, FL
Job Title: Senior Specialist, Integration & Test Engineer
Added 44 mins ago
Sr Technology Project Manager, Progression
TECO Energy
Tampa, FL
PERFORMANCE COACH: Manager/Sr. Manager, Program Management Office (PMO)
Added 44 mins ago
EG
Senior Software Engineer
Eliassen Group
Orlando, FL
- $86.96 to $90.31 USD / hour
Our client seeks a Senior Software Engineer to design, build, and support integrations for an AI-enabled employee assistant that helps users find answers, request services, and complete HR…
Added 1 hour ago
M
Technical Support Engineer
Microsoft
TX · NC · WA · Irving, TX · Charlotte, NC · Redmond, WA · Irving · Charlotte · Redmond
- $86,100 to $187,400 USD / year
…people with a passion for delivering customer success. As a Senior Technical Support Engineer, you will own, troubleshoot, and solve complex customer technical issues. This opportunity will…
Added 1 hour ago
M
Senior Software Engineer - Networking
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
…industry, and work with standards bodies such as the IETF. This Senior Software Engineer role offers the opportunity within the Windows CoreOS Networking Team to solve challenging systems…
Added 1 hour ago
O
Lead Software Engineer - City
OKC
OKLAHOMA CITY, OK · Oklahoma City, OK
- $39.52 to $60.39 USD / hour
The Lead Software Engineer is responsible for being a lead technical resource on a team of software engineers and developers and ensuring the successful delivery of high-quality software…
Added 1 hour ago
Neutron, Gamma, and Particle Sensing Systems Engineer (R&D Engineer 4)
Los Alamos National Laboratory
Los Alamos, NM
The Space Systems Engineer is a recognized technical expert in the development, testing, and operation of spaceflight payloads, provides technical and programmatic reporting to internal and…
Added 1 hour ago
Mechanical Engineering DE Analysis, Mid-level to Senior
AeroVironment
Albuquerque, NM
AeroVironment is seeking a Mechanical Engineer with a strong background in engineering analysis to support the development of advanced directed energy systems. This role will focus on the…
Added 1 hour ago
M
Senior Optical Transport SME
ManpowerGroup
Howard County, MD
- $85 to $92 USD / hour
Job Title: Senior Network Engineer (Senior Optical Transport SME)
Added 1 hour ago
Principal Microelectronics Semiconductor Manufacturing Engineer/Sr. Principal Microelectronics Semiconductor Manufacturing Engineer
Northrop Grumman
Elkridge, MD
…highest quality. The microelectronics semiconductor manufacturing engineer will support our highly automated SMT manufacturing environment. Manufacturing engineers are the process owners…
Added 1 hour ago
EC
Senior Manufacturing Engineer
Eaton Corporation
Arden, NC
- $86,000 to $126,000 USD / year
Eaton’s Electrical Sector ARS - PDCA division is growing and currently seeking a Senior Manufacturing Engineer based onsite at our Avery Creek, NC manufacturing facility.
Added 1 hour ago
Senior Staff AI / ML Solutions Engineer
ThermoFisher Scientific
Morrisville, NC
We have a new opening within the Clinical Research Group (CRG) of Thermo Fisher for a Senior Staff AI/ML Solutions Engineer to support the Finance organization and serve as the hands-on…
Added 1 hour ago
Sr. Reliability Engineer
Chemours
Fayetteville, NC
Chemours is seeking a Senior Reliability Engineer to join our Asset Care team. This position will be located at an APM Manufacturing Site and report directly to the Manufacturing Excellence…
Added 1 hour ago
VG
Senior Account Manager, Capital Equipment - West
Vitrolife Group
Remote, United States
- $130,000 to $165,000 USD / year
Vitrolife Group has an immediate opening in our North American Sales Team for a Senior Account Manager in the West Area responsible for Capital Equipment/Technologies.
Added 1 hour ago
VG
Senior Account Manager, Capital Equipment - East
Vitrolife Group
Remote, United States
- $130,000 to $165,000 USD / year
Vitrolife Group has an immediate opening in our North American Sales Team for a Senior Account Manager in the East Area responsible for Capital Equipment/Technologies.
Added 1 hour ago
Software Development Engineer, DevX LIFT
Amazon
Raleigh, NC
…having a great time designing the Future? We are looking for senior Software Development Engineers to help us make this vision a reality. Join…
Added 1 hour ago
Senior Embedded Systems Verification Engineer
Eaton Corporation
Raleigh, NC
Eaton’s Critical Power Solutions Division (CPS) is seeking an Embedded Systems Verification Sr. Engineer. This position can be based on a hybrid basis in Raleigh, NC. Relocation is…
Added 1 hour ago
C
Senior Site Reliability Engineer (Open for Remote)
Cognizant
Charlotte, NC
- $79,240 to $133,500 USD / year
As a Senior Site Reliability Engineer, you will make an impact by strengthening the reliability, stability, availability, and operational performance of a mission-critical application…
Added 1 hour ago
C
Senior Site Reliability Engineer (Open for Remote)
Cognizant
Charlotte, NC
- $79,240 to $133,500 USD / year
As a Senior Site Reliability Engineer, you will make an impact by strengthening the reliability, stability, availability, and operational performance of a mission-critical application…

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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