Vannevar - Software Engineer, Backend (Collection Fingerprinting)

• Master our data and capabilities. We’ve built world-class data collection for some key national security data sets. Understand how we’ve built it, what our differentiators are, and how to take it to the next level. • Master our data and capabilities. • Understand our users. You’ll need to understand their missions, challenges, and expectations to build systems that help them. • Understand our users. • Shape our collection approach. You understand how our systems interact with defensive systems, and will develop and implement technical plans that keep high-value data flowing. • Shape our collection approach. • Build and maintain stable, scalable systems. Our customers operate 24x7 and need access to fresh, rich, operationally-relevant data. You will design collection systems that remain stable under sophisticated automated detection regimes. • Build and maintain stable, scalable systems. • Contribute to agentic capability. Ensure the tools you build and collected data is usable by agents (tool-call readiness, retrieval patterns, schemas/metadata, evaluation loops, etc.). Identify gaps where the right data isn’t getting into agent tool calls and coordinate fixes. • Contribute to agentic capability. • usable by agents • You might be a fit if you • Care deeply about the mission: the data we collect is enabling massive, generational impact across many national security missions. • Have strong back-end experience and understanding of distributed systems. Prefer typescript/python expertise. • Understand how anti-abuse, bot detection, fraud, or traffic integrity systems analyze traffic and operate at scale. • Are data driven and and have eye for instrumentation and monitoring. • You can reason about how small deviations in protocol behavior, timing, or runtime characteristics propagate into anomaly scores. • Are technically diverse and can adapt your tool stack quickly. • Communicate crisply: can write a one-pager that aligns stakeholders, communicates, risks, and drives action. • You prefer structural resilience over reactive tactics. • Are comfortable making hard prioritization calls with incomplete information. • What we value • Deeply understand how network-level and browser-level signatures combine to form a holistic risk profile in modern detection systems. • Experience with web scraping, browser automation, and similar. • Experience with national security problems and workflows, data platform/product work. • Familiarity with agentic systems and what makes data “tool-call ready” • Full stack capability. This team leans heavily into the backend, but does touch the front end from time to time (React). • What we look for • Grit and creativity to keep going when faced with a roadblock. • Success in working problems to conclusion and trying different approaches until one works. • Ability to work autonomously. • Demonstrated bias towards achieving an outcome even if it requires helping or doing the job of someone else on another team. • Active TS / SCI Clearance is a plus but not needed