Software Engineer, Bot & Fraud Detection Platform jobs in United States
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Castle · 5 months ago

Software Engineer, Bot & Fraud Detection Platform

positionUnited States
timeFull-time
remoteRemote
senioritySenior Level
money$153K/yr - $206K/yr
date5+ years exp

Castle is building real-time infrastructure to protect SaaS platforms from fraud, abuse, and malicious automation. The role involves architecting and owning the pipelines and systems that power the detection platform, focusing on automating detection logic and integrating advanced machine learning techniques.

Cyber SecurityFinTechFraud DetectionInternetSecurity
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Growth Opportunities
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H1B Sponsor Likelynote

Responsibilities

Design and optimize Castle’s detection infrastructure for speed, resilience, and adaptivity
Build real-time pipelines that ingest and process behavior, fingerprint, and fraud signals
Create automation for rule deployment and fingerprint updates with millisecond latency
Develop a dynamic detection layer that can reconfigure in response to novel attacks
Apply vector-based search and event-driven architectures to classify and cluster threat behavior
Enable seamless developer access to detection primitives—without exposing detection secrets
Collaborate tightly across detection, ML, product, and infrastructure to keep attackers out and users safe

Qualification

Detection engineeringStream processingReal-time systemsFingerprintingHigh-performance databasesML toolsPlatform builder mindsetCollaboration

Required

5+ years of experience in detection engineering, bot mitigation, or security data pipelines
Deep understanding of stream processing and event-driven systems (Kafka, Flink, etc.)
Experience building low-latency, real-time systems for detection or automation
Strong grasp of fingerprinting, reputation scoring, and adversarial attack patterns
Experience with high-performance DBs like ClickHouse, Redis, or similar
Familiarity with ML tools (e.g., anomaly detection, clustering, vector search)
A platform builder's mindset—you want to enable others, not just build features

Company

Castle

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Account security and fraud prevention for developers, teams, and enterprises.
dateFounded in 2015
location
San Francisco, California, USA
people-size11-50 employees
web-link
https://castle.io

H1B Sponsorship

Castle has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2024 (1)
2021 (2)
2020 (3)

Funding

Current Stage
Early Stage
Total Funding
$11.56M
Key Investors
Index VenturesFirst Round Capital
2021-01-01Series Unknown
2019-02-08Series A· $9.2M
2016-11-09Seed· $2M

Leadership Team

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Johan Brissmyr
CEO & Co-founder
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Recent News

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Company data provided by crunchbase