Senior Engineer I (Fraud)
Your Role & Mission
This role sits at the intersection of backend engineering, security, and fraud operations, and will play a critical role in evolving Apollo’s abuse detection and account security capabilities.
As a Senior Engineer I (Fraud), you’ll work closely with Fraud Operations, Data Science, Application Security, and Product to modernize abuse detection logic, prototype and deploy new risk decisioning systems, and build the technical foundation for a fraud decision engines over the next several quarters. This role is ideal for a senior engineer who thrives in ambiguous, data-driven problem spaces and enjoys building systems that directly protect customers and the business.
Daily Adventures & Responsibilities
Lead the implementation and ongoing improvement of abuse detection services and customer account security features
With assistance of team manager, implement a home-grown risk decision engine
Build and maintain APIs to support extensible, low-latency risk decisioning
Research and analyze abuse tools and attacker tactics to inform detection strategies
Participate in fraud incident triage and lead development of mitigations and remediation
Collaborate with Data Science and Data Engineering on model feature design
Work closely with Fraud Operations and Application Security to align detection and response
Stay informed on fraud prevention trends and apply relevant insights internally
Skills & Relevant Experience
5+ years building production backend systems in a SaaS or similar environment
Experience designing scalable backend services; exposure to risk or decisioning systems a plus
Proven track record of designing customer-first features
Ability to explore and validate ideas using imperfect or partially structured data
Strong foundation in secure system design and layered defenses
Comfortable presenting designs to both technical peers and senior stakeholders
Familiarity with common abuse vectors, evasion techniques, or scraping patterns
Strong ownership mindset and ability to prioritize effectively
Fraud, trust & safety, or security-adjacent experience preferred
Clear written and spoken English communication
Our tech stack is React/Redux/NodeJS on the frontend, Ruby/Ruby on Rails/MongoDB/Elasticsearch on the backend, and Kubernetes/Docker/Ansible/Terraform in infrastructure.
Apollo.io Tech Blog: Deep dives into engineering, product design, and company-culture stories from the Apollo team, offering behind-the-scenes insight into how Apollo builds and scales its B2B sales platform.
About the job
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Senior Engineer I (Fraud)
Your Role & Mission
This role sits at the intersection of backend engineering, security, and fraud operations, and will play a critical role in evolving Apollo’s abuse detection and account security capabilities.
As a Senior Engineer I (Fraud), you’ll work closely with Fraud Operations, Data Science, Application Security, and Product to modernize abuse detection logic, prototype and deploy new risk decisioning systems, and build the technical foundation for a fraud decision engines over the next several quarters. This role is ideal for a senior engineer who thrives in ambiguous, data-driven problem spaces and enjoys building systems that directly protect customers and the business.
Daily Adventures & Responsibilities
Lead the implementation and ongoing improvement of abuse detection services and customer account security features
With assistance of team manager, implement a home-grown risk decision engine
Build and maintain APIs to support extensible, low-latency risk decisioning
Research and analyze abuse tools and attacker tactics to inform detection strategies
Participate in fraud incident triage and lead development of mitigations and remediation
Collaborate with Data Science and Data Engineering on model feature design
Work closely with Fraud Operations and Application Security to align detection and response
Stay informed on fraud prevention trends and apply relevant insights internally
Skills & Relevant Experience
5+ years building production backend systems in a SaaS or similar environment
Experience designing scalable backend services; exposure to risk or decisioning systems a plus
Proven track record of designing customer-first features
Ability to explore and validate ideas using imperfect or partially structured data
Strong foundation in secure system design and layered defenses
Comfortable presenting designs to both technical peers and senior stakeholders
Familiarity with common abuse vectors, evasion techniques, or scraping patterns
Strong ownership mindset and ability to prioritize effectively
Fraud, trust & safety, or security-adjacent experience preferred
Clear written and spoken English communication
Our tech stack is React/Redux/NodeJS on the frontend, Ruby/Ruby on Rails/MongoDB/Elasticsearch on the backend, and Kubernetes/Docker/Ansible/Terraform in infrastructure.
Apollo.io Tech Blog: Deep dives into engineering, product design, and company-culture stories from the Apollo team, offering behind-the-scenes insight into how Apollo builds and scales its B2B sales platform.