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.
Search is at the heart of Vannevar’s flagship platform and agentic workflows. We are seeking a Senior Software Engineer, with substantial knowledge and passion for search and information retrieval, to drive innovation in this space. In this role, you will work directly with our ML and product teams to advance a state-of-the-art search system that fundamentally drives our users’ ability to surface mission critical information.
What you'll do- Design and adapt the technical strategy for search within Vannevar’s products, including how we leverage full-text search, vector databases, LLMs, NLP, and relevance algorithms
- Improve both search latency and relevance
- Collaborate with product engineers, designers, and mission strategists to translate user needs into data-informed search innovations
- Research and apply emerging technologies, trends and best practices in the search/information retrieval domain to improve index quality, freshness, and retrieval performance
- You have 7+ years of experience in backend software development, with 3+ years in search, information retrieval, or related fields
- You have a passion for architecting, developing and deploying reliable, scalable, and performant systems
- You have expertise in information retrieval, NLP, and machine learning. You have a deep understanding of concepts like indexing, ranking, query parsing, tokenization, and vector search.
- You have hands-on experience with at least one major search engine (e.g., Elasticsearch, OpenSearch), and familiarity with search evaluation frameworks (e.g., precision, recall, NDCG).
- You have excellent analytical, problem-solving, leadership, and communication skills.
- U.S. Person status is required as this position will require the ability to access U.S. only data systems.
The salary range for this position is $150,000 - $215,000 + equity. Within the range, individual pay is determined by experience, relevant education, and/or training.
Comprehensive Benefits- 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
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.
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What the Team is Saying
What We Do
Since our founding in 2019, Vannevar Labs has been building software for the country's most critical national security problems. We believe our military service members and intelligence officers deserve access to the best technology American innovation can offer, and we are building great products for this mission. Our founders have 30 years of combined experience across national security, government sales, CIA, In-Q-Tel and the DoD. We're supported by a number of VCs, including Felicis, DFJ Growth, Point72, Costanoa, and General Catalyst.
Why Work With Us
We pride ourselves on being a team of passionate, low-ego professionals who share a commitment to excellence and a genuine concern for the people and projects we work on. Additionally, we pride ourselves on being a company that truly values its employees and their well being.
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Vannevar Offices
Remote Workspace
Employees work remotely.
We are a fully remote company with satellite offices in New York and Washington DC.
