# Software Engineer, Backend (Collection Fingerprinting)

**Company:** [Vannevar](https://hotfix.jobs/companies/vannevar)
**Location:** Remote
**Role:** Backend Engineering
**Skills:** TypeScript, Python, Distributed Systems, Browser Automation, Web Scraping, Anti-Bot Defenses, Fingerprinting, Signature Mitigation, React, Agentic Systems
**Posted:** 2026-03-27

> Builds and enhances backend systems for collecting hard-to-access data via browser automation, web scraping, and evasion techniques in adversarial environments. Requires expertise in distributed systems, anti-detection measures, and TypeScript/Python for scalable, agent-ready tools.

## Job Description

## What you’ll do

- Master our data and capabilities. Understand how we’ve built world-class data collection for key national security data sets, our differentiators, and how to take it to the next level.
- Understand our users and their missions, challenges, and expectations to build systems that help them.
- Shape our collection approach by developing and implementing technical plans that keep high-value data flowing under defensive systems.
- Build and maintain stable, scalable systems that remain reliable under sophisticated automated detection regimes.
- Contribute to agentic capability by ensuring tools and data are usable by agents (tool-call readiness, retrieval patterns, schemas/metadata, evaluation loops, etc.) and coordinate fixes for gaps.

## You might be a fit if you

- 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 at scale.
- Are data driven with an eye for instrumentation and monitoring.
- 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.

## What we value

- Deeply understand how **network-level and browser-level signatures** combine to form holistic risk profiles 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** (leans backend, touches frontend with React).

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**Apply:** https://hotfix.jobs/jobs/51fb76c1-95f8-4f41-941f-9874bb811d0d
**Canonical:** https://hotfix.jobs/jobs/51fb76c1-95f8-4f41-941f-9874bb811d0d