Senior Frontend Engineer, Frontend Platform

Posted Yesterday
Hiring Remotely in USA
Remote
170K-225K Annually
Senior level
Artificial Intelligence • Machine Learning • Software • Defense
Vannevar builds AI systems to solve America's hardest national security challenges.
The Role
The Senior Frontend Engineer will enhance core libraries, improve developer experience, and collaborate across teams to deliver platform capabilities that enhance user experience.
Summary Generated by Built In

Vannevar is a defense technology company building AI to deter our adversaries. In the 21st century, conflict moves at algorithmic speed and foresight equals firepower. Our agentic AI is purpose-built to compete with China—from cross-Strait conflict to gray zone coercion. Trained on the most mission-relevant datasets in defense, our technology models adversary behavior, simulates campaigns, and recommends the best course of action to decision makers. Our AI systems are some of the most trusted in the industry and actively used on the front lines of the Indo-Pacific to keep the peace and save lives.

Exceptional technology starts with exceptional people. Vannevar is a small agile team combining world-class engineers with veteran strategists who bring deep expertise in defense and tradecraft. We’re building a company defined by mission impact, user empathy, and disciplined growth. In just three years, we grew from $3M to $80M in ARR, achieved early profitability, and reached unicorn status—proving that disruption doesn’t require an ego, and staying power doesn’t mean standing still.

About the role

Vannevar's Frontend Platform team builds and maintains the frontend foundation that the entire Vannevar platform runs on. We turn cross-product needs into stable, well-documented platform capabilities so product teams can ship fast, stay consistent, and focus on mission problems.

We're looking for a senior frontend engineer to join this small, high-leverage team. You'll work on shared libraries, developer tooling, and the application shell (the code that every Vannevar product depends on). You'll also build user-facing platform features that directly impact how operators and analysts experience the product.

What you’ll do
  • Own and evolve core frontend libraries and the application platform that Vannevar's products are built on
  • Design and implement shared infrastructure: routing, authentication, error handling, UI components, and cross-app patterns
  • Improve developer experience: faster local dev, better build pipelines, and clearer documentation
  • Partner with product teams to understand their needs and turn recurring patterns into reusable platform capabilities
  • Mentor and guide engineers across the organization on frontend architecture and best practices
What we look for
  • 7+ years of professional experience in frontend software development
  • Experience working on frontend infrastructure, platform, or developer experience teams. You've built shared libraries, design systems, component frameworks, or internal tooling that other engineers depend on.
  • Deep expertise in TypeScript and React. You've thought seriously about component API design, render performance, state management boundaries, and how to ship library code that other teams consume without friction. 
  • Strong opinions on developer experience, loosely held. You care about making other engineers productive and can balance long-term platform health with near-term team needs.
  • Eye for design and attention to detail. You hold UI to a high visual and interaction quality bar.
  • You treat other engineering teams as customers. You also care about the end users downstream (the operators using what gets built on top of your platform).
  • Comfort operating across the stack when needed. You don't stop at the frontend boundary if the right solution involves a backend change.

Nice to have

  • Experience with module federation, micro-frontend architectures, or scaling frontend monorepos.
  • Familiarity with Node.js, Postgres, and OpenFGA
  • Familiarity with web application security (authentication, authorization, XSS prevention) and experience applying it across full stack applications
  • Experience building or contributing to design systems at scale.
  • Active Security clearance (or ability to obtain one) and willingness to travel onsite at least quarterly to perform user research and help debug issues.
What we offerCompetitive Salary

The salary range for this position is $170,000 - $225,000 + equity. Within the range, individual pay is determined by experience, relevant education, and/or training.

Comprehensive Benefits

We’re proud to offer competitive benefits that support our employees. Some key highlights of our benefits package include:

  • Health, dental, and vision insurance
  • Remote friendly with WeWork access
  • Unlimited PTO, shared downtime during the federal holiday calendar, and company-wide off time at the end of each year
  • 401(k) match
  • Lifestyle & wellbeing stipends
  • Salary top-up during military reserve duty
  • Fully paid parental leave
  • Child and pet care reimbursement during travel


Vannevar is an equal opportunity employer, and qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, or disability status.
 
We encourage candidates from all backgrounds to apply, even if you don't feel like you're a perfect fit. If you're passionate about contributing to our mission, we'd love to hear from you!
 
IMPORTANT NOTICE
We are committed to protecting the privacy of all applicants. Official emails from the company will come from an @vannevarlabs.com domain. Under no circumstances will a legitimate representative from our company contact you to request passwords, financial information, or other sensitive personal data. Please be vigilant of potential scams.

Top Skills

Node.js
Openfga
Postgres
React
Typescript

What the Team is Saying

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The Company
Arlington, Virginia
225 Employees
Year Founded: 2019

What We Do

Vannevar combines Silicon Valley innovation with former special operators to build AI for real-world national security outcomes. Since our founding in 2019, Vannevar has deployed its technology across 125 missions, safeguarding our service members and improving our country's deterrence. We believe our military service members and intelligence officers deserve access to the best technology American innovation can offer, and we are mobilizing frontier technology for this mission. Our founders have 30 years of combined experience across AI labs, national security strategy, intelligence agencies and special operations. We're supported by a number of leading VCs, including Felicis, DFJ Growth, Point72, Costanoa, and General Catalyst. Vannevar is one of the most capital efficient defense tech companies, reaching early profitability and becoming a defense tech unicorn in 2024.

Why Work With Us

We pride ourselves on being a team of passionate, low-ego professionals who share a commitment to engineering excellence and a genuine concern for the people and AI agents we deliver. Vannevar is a company that truly cares about its people and one of our core principles is "put your wellbeing first". ​

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Vannevar Offices

Remote Workspace

Employees work remotely.

We are distributed across the map, but united by the mission. We go where the mission takes us and deliver where others can’t. Honolulu, Seattle, San Francisco, Washington D.C., New York. You decide what's next.

Typical time on-site:
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Arlington, Virginia
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Honolulu, Hawaii
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New York, NY
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San Diego, California
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San Francisco, California
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Seattle, Washington
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