Antifraud & Detection Engineer

EXANTE•Armenia, GA

9d•Remote

About The Position

We are looking for a senior hands-on specialist to design, implement, and operationalize fraud detection, fraud prevention, and investigation capabilities across our brokerage and digital asset environment. You will work across client authentication, session security, trading activity, back-office operations, crypto treasury/custody workflows, and privileged internal actions. The role requires someone who can independently move from problem discovery to telemetry design, detection logic, workflow automation, preventive controls, and investigation playbooks.

Requirements

5+ years of experience in antifraud, fraud detection, security investigations, abuse prevention, or adjacent roles in fintech, brokerage, payments, crypto, or other high-risk online environments
Strong understanding of authentication, session management, access control, MFA, and common account takeover techniques
Experience investigating fraud or security incidents using multiple data sources, including logs, transactional data, and audit trails
Ability to detect and analyze fraud patterns such as account compromise, suspicious sessions, insider misuse, social engineering fallout, and business logic abuse
Strong SQL and data analysis skills; ability to work with large datasets and identify anomalies, patterns, and linked entities
Experience with SIEM, log management, or similar analytical platforms
Hands-on experience building or tuning fraud detection rules, risk scoring, alerting logic, or investigation workflows
Experience with statistical methods or machine learning for fraud/anomaly detection
Strong scripting/automation skills for data analysis, integrations, and prototyping
Ability to work independently and deliver practical controls end-to-end, from analysis to implementation
Good understanding of financial platforms, trading lifecycle, and operational risk concepts
Awareness of crypto-related fraud risks, including exchange integrations, wallet operations, and approval workflows
Strong written communication skills and ability to document investigations clearly for technical and non-technical stakeholders

Nice To Haves

Integrity & loyalty
Team player with advanced communication and collaboration skills
A hands-on, can-do attitude - always looking for solutions and thinking out of the box
Overachiever mentality
The capability to work and succeed in the fast pace and ever-changing environment

Responsibilities

Design, implement, and tune fraud detection controls across authentication, trading, crypto, and admin workflows (e.g., account takeover, session abuse, high-risk account changes), and deploy preventive measures like step-up authentication, velocity checks, and risk-based friction.
Conduct end-to-end investigations using logs, SIEM, and data warehouse tools to reconstruct incident timelines, document findings for compliance/legal/regulatory review, and convert recurring patterns into playbooks and engineering requirements
Define telemetry requirements, identify gaps in audit logging and event schemas, and partner with engineering teams to ensure fraud-relevant data is accurately captured and correlated
Write advanced SQL/analytical pipelines, build fraud detection models and scoring systems, and monitor precision, recall, and model drift to ensure ongoing effectiveness and explainability
Analyze trading platform workflows for exploitable weaknesses, detect abuse patterns (e.g., restriction bypass, coordinated activity), and collaborate on remediation designs
Review and strengthen controls around crypto treasury/custody operations, detect wallet and approval workflow abuse, and support governance and transaction authorization processes
Build alerting/triage workflows, define severity and routing criteria, maintain KRIs and dashboards, and drive post-incident improvements to strengthen controls and telemetry