Abuse Research Engineer Jobs

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about what you’ve built. At Ramp, everyone is a builder who owns problems end to end and makes consequential decisions that shape the outcome. The median Ramp customer saves 5% and grows revenue 16% in their first year – far in excess of businesses operating without Ramp. We believe every ambitious company deserves the same. If you want to build systems that directly shape how companies move and manage billions, Ramp is the place to do it. About the Role We’re seeking someone to lead the future of fraud machine learning at Ramp. In this role, you will help build core machine learning models, design data architectures, and set strategic roadmaps to help Ramp mitigate fraud-related threats while minimizing the friction experience by legitimate users. You will partner closely with product and engineering counterparts across model design, implementation, execution, and analysis. What You’ll Do Employ statistical and machine learning techniques on large datasets to discover patterns of fraud, platform abuse, and identity theft Prototype and productionize machine learning models and rules-based systems to protect Ramp and its users from fraud Partner closely with Fraud Engineering and Data Platform teams to augment and leverage data across first and third party sources, ensuring we’ve added as much context as possible to every decision we make Contribute to the culture of Ramp’s machine learning team by influencing processes, tools, and systems that will allow us to make better decisions in

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: London, Lisbon, or New York About the Role As a Senior Product Manager for Application Protection & Governance, you’ll join our core Application Security team to protect web, API applications against evolving abuse and threat patterns. You will own the product outcomes that help customers deploy, operate, and improve security controls over time, turning complex security requirements into practical capabilities and operational gu

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . Security is a primary competency at Coinbase, and the Threat Intelligence team within Security Operations keeps a watchful eye over every aspect of it. As a Senior Onchain Investigator, you'll own end-to-end onchain investigations into the threat actors targeting Coinbase and the crypto ecosystem. You'll cluster illicit wallets, fuse OSINT with onchain evidence, and turn findings into detections, blocks, and decisions that protect customers and products. This role leads investigation methodology for the team, not just individual cases. What you'll do: Own complex onchain investigations into threat actor infrastructure, scam networks, exploits, and related abuse targeting Coinbase and Base Drive clustering and attribution of illicit actors using blockchain analytics, OSINT, and internal data, then operationalize results into Vertex Synapse and downstream controls Build OSINT and onchain analysis pipelines, queries, and dashboards that automate detections and scale investigative capacity across the team Lead post-incident reviews and root cause analyses to identify gaps and recommend enhancements to controls, detection, and overall security posture Partner with product, engineering, and risk teams to embed threat and abuse mitigation strategies into the product development lifecycle from ideation to launch Lead new investigative techniques, teach them across Sec

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. The Identity & Integrity organization is looking for software engineers. We are growing our team with people who want to build, improve and incorporate technologies that make the lives of our community more enriched and safe. As an engineer at Lyft, you'll collaborate with teams like product, data science, analytics, and operations on code that empower us to iterate quickly, while focusing on delighting our passengers and drivers. As a Software Engineer in the Identity team, your primary responsibilities will encompass: Lyft’s Login & Signup Experiences: Design and enhancement of our Multi-factor authentication (MFA) experiences. Optimization of verification funnels, including: Phone-based two-factor authentication (2FA) Email verification Identity provider single sign-ons (SSO) Overseeing session management and device validation. Developing OAuth client provisioning and related tooling. Account Security: Act as the frontline defense against fraudsters and phishers aiming to exploit rider and driver accounts through product vulnerabilities. Implement strategies to counteract risks posed by social engineering tactics. Scaling Core Services: Lead the maintenance and optimization of core microservices under the Identity team's purview, essential to Lyft’s diverse service offerings. Manage organizational structures and multi-user management systems. (RBAC, family accounts, AuthZ) Design solutions for high-stakes challenges such as: Preventing unauthorized driving. Thwarting abuse related to recycled phones and their numbers. Striking a balance between stringent customer verification and ensuring minimal user friction. Responsibilities Write well-crafted, well-tested, readable, maintainable code Promote appropriate tech and engineering best practices Implement identity and security protocols to se

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . Reddit is continuing to grow our teams with the best talent. This role is completely remote friendly within the United States. If you happen to live close to one of our physical office locations (San Francisco, Los Angeles, New York City & Chicago) our doors are open for you to come into the office as often as you'd like. As Reddit’s advertising ecosystem rapidly expands, protecting our platform, advertisers, and users from bad actors is paramount. We are seeking a Staff Threat Analyst to serve as the operational architect for Advertiser Fraud within Safety. You will have end-to-end ownership to establish the strategy, build foundational detection playbooks, and define enforcement frameworks. You will work in tight partnership with cross-functional Product, Engineering, Data Science, and Ops teams across both Safety and Ads orgs to convert adversarial insights into scalable automated defenses. This is a 0-to-1 opportunity to shape our threat response frameworks, operational playbooks, and detection pipelines from scratch. Responsibilities: Strategy & System Architecture: Formulate and execute a multi-quarter vision for advertiser fraud detection and enforcement; independently prioritize high-impact risks like account takeover (ATO), payment/billing fraud, cloaking, deceptive ads and network abuse. Deep Analytics & Investigations: Conduct deep-dive investigations into complex, multi-entity fraud networks and sophisticated adversarial tactics. Drive root-cause analysis and map cluster infrastructure to p

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. About the Role Cloudflare's Internal Fraud Platform team is focused on protecting Cloudflare from fraud and abuse: fraudulent signups, promo and trial abuse, payment fraud, chargebacks, and account takeover that cost the company revenue and support overhead. Today the team is built around data science, developing the signals and models that detect this activity. We're hiring our first software engineer to build the platform around that work: ingesting e

Figma is growing our team of passionate creatives and builders on a mission to make design accessible to all. Figma’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI. From idea to product, Figma empowers teams to streamline workflows, move faster, and work together in real time from anywhere in the world. If you're excited to shape the future of design and collaboration, join us! As a Security Scientist, you will leverage your data analysis skills and help identify and drive impactful projects to improve the safety and security of Figma's product, platform, and our IT systems. The mission of the Figma Security team is to help Figmates ship the most secure and safe product to our users. We are looking for security scientists with a strong grasp of security and anti-abuse fundamentals. You will partner closely with teams in Security Engineering as well as teams across the company to focus on systemic security and safety improvements and risk reduction. You will also apply your security expertise and analytical skills to support and participate in security design reviews and consulting, incident response, and risk management. This is a full time role that can be held from one of our US hubs or remotely in the United States. What you'll do at Figma: Collaborate cross-functionally across the company to understand existing security and anti-abuse problems and work with engineering, product, data science, and other teams on solutions Understand attacker and user behavior on the Figma platform and inside Figma through creation of new datasets, metrics, experimentation, etc., and guide strategy and decision making Build detections, tune signal quality, and measure coverage across Figma's products, platforms, and internal systems, turning attacker behavior into durable, data-driven detections Lead and support security investigations, developing the datasets, tooling, and analysis

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . As a Payments Risk Analyst I on the Payments Risk team, you'll serve as the first line of defense against payments fraud across Coinbase. This team reviews escalated accounts, identifies fraud patterns, and strengthens the controls that protect millions of customers from chargebacks, ACH abuse, wire disputes, and account takeovers. You'll own end-to-end fraud investigations, surface insights that sharpen our detection logic, and drive process improvements that reduce risk exposure at scale. What you'll do: Own detailed investigations of escalated customer accounts to identify and mitigate payments fraud risks, including chargebacks, ACH returns, wire disputes, and account takeovers. Analyze fraud trends and patterns in payment activities, delivering actionable insights to Payments Risk leadership that improve detection accuracy. Partner with the Payments Risk investigations team to provide feedback on rule performance and risk logic, strengthening our automated defenses. Drive process improvements by identifying workflow inefficiencies and recommending changes that reduce risk exposure and increase operational throughput. Support the development and documentation of review processes to scale operational efficiency as transaction volumes grow. Required Skills and Experience: 1+ years of experience in payments risk, fraud analysis, or risk operations within financial s

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . As a Payments Risk Analyst I on the Payments Risk team, you'll serve as the first line of defense against payments fraud across Coinbase. This team reviews escalated accounts, identifies fraud patterns, and strengthens the controls that protect millions of customers from chargebacks, ACH abuse, wire disputes, and account takeovers. You'll own end-to-end fraud investigations, surface insights that sharpen our detection logic, and drive process improvements that reduce risk exposure at scale. What you'll do: Own detailed investigations of escalated customer accounts to identify and mitigate payments fraud risks, including chargebacks, ACH returns, wire disputes, and account takeovers. Analyze fraud trends and patterns in payment activities, delivering actionable insights to Payments Risk leadership that improve detection accuracy. Partner with the Payments Risk investigations team to provide feedback on rule performance and risk logic, strengthening our automated defenses. Drive process improvements by identifying workflow inefficiencies and recommending changes that reduce risk exposure and increase operational throughput. Support the development and documentation of review processes to scale operational efficiency as transaction volumes grow. Required Skills and Experience: 1+ years of experience in payments risk, fraud analysis, or risk operations within financial s

Legal Services NYC (LSNYC) fights poverty and seeks racial, social and economic justice for low-income New Yorkers. For over 50 years, we have challenged systemic injustices that trap people in poverty and provided legal services that help our clients meet basic needs for housing, income and economic security, family and immigration stability, education, and health care. LSNYC is the largest civil legal services provider in the country; our staff of more than 600 people in neighborhood-based offices and outreach sites across all five boroughs helps hundreds of thousands of New Yorkers annually. We partner with scores of community-based and client-run organizations, elected officials, public agencies, pro bono lawyers, and the courts to maximize our effectiveness. Our work fights discrimination and helps to achieve equity for all low-income New Yorkers. LSNYC employees have numerous opportunities for growth and professional development, including access to our internal Justice Learning Center, which provides opportunities to earn free CLEs and gain experience as a trainer. MANHATTAN LEGAL SERVICES STAFF ATTORNEY – FAMILY LAW UNIT About Our Organization : Manhattan Legal Services is seeking a staff attorney to join our Family Law Unit. The Family Law Unit handles the full range of family law issues. MLS’ Family Law Unit focuses on survivors of intimate partner violence and is an interdisciplinary team of attorneys, a social worker, and a paralegal whose mission is to provide holistic and culturally competent services to empower survivors of intimate partner violence to live free of abuse. Our attorneys provide direct legal representation to intimate partner violence survivors in the full range of family law cases, including divorce, custody/visitation, orders of protection, and child support. Finally, we conduct outreach and work in partnerships with community groups to ensure that we are best serving the community.

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Job Location: Singapore We are looking for a thoughtful, detail-oriented Trust and Safety Platform Operations Investigator to work with our global Trust & Safety team. In this role, you will address sensitive and escalated abuse, compliance tasks, and Trust and Safety issues that affect our customers. This is a position where you will also gain familiarity with the inner workings of Cloudflare's technology and policies. As an investigator you will c

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . Reddit's Transport and Site Defense teams build and operate foundational infrastructure behind one of the largest sites in the world. These teams own how requests enter Reddit, how services discover and talk to each other, how traffic moves across clusters and clouds, and how Reddit protects itself from DDoS attacks, scrapers, bots, and other undesired traffic. We are looking for a Staff Software Engineer to join the Site Defense team within Reddit’s Infrastructure organization. Site Defense is responsible for protecting Reddit at internet scale—serving as the first line of defense against DDoS attacks, automated abuse, large-scale scraping, and other network-level threats. This is a high impact role that sits at the intersection of distributed systems, networking, security, and applied machine learning. You will design and own the critical infrastructure that safeguards Reddit’s data from large scale attacks. You will: Design, build, and operate high-scale, low-latency systems that protect Reddit from DDoS attacks, bots, and automated abuse. Analyze, develop and evolve ingress-level defenses across CDN, edge, and internal infrastructure layers. Build systems to detect, score, and mitigate malicious traffic in real time at per-request and per-user granularity Partner closely within Infrastructure and with Security, and internal Safety teams to balance security, performance, and user experience Mentor junior engineers in their professional growth. Contribute to the team’s ML-at-Ingress initiatives, including experimentin

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . As an Offensive Security Engineer on the Application Security team within Security, you'll pioneer how Coinbase uses frontier AI models to scale vulnerability discovery, red team AI systems, and automate security workflows. This role bridges traditional penetration testing with next-generation AI-augmented offensive security, directly accelerating our ability to protect products and customers. You'll own the development of AI-driven security tooling and collaborate across Vulnerability Management, Offensive Security, and Incident Response to fundamentally shift how we operate. What you'll do: Build, deploy, and maintain custom security scanners that leverage frontier models to detect vulnerabilities at scale across Coinbase's product surface. Lead red teaming efforts against internal AI systems, including jailbreak testing, prompt injection analysis, and tool abuse simulation. Develop AI-driven automation for vulnerability triage, validation, and remediation workflows to accelerate the bug bounty and vulnerability response pipelines. Partner with engineering teams to prioritize, remediate, and verify fixes for critical vulnerabilities discovered through AI-augmented and manual testing. Mentor junior security engineers on integrating AI into offensive security workflows to scale team capabilities. Required Skills and Experience: 3+ years of experience in application s

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . Reddit is continuing to grow our teams with the best talent. This role is completely remote friendly within the United States. If you happen to live close to one of our physical office locations (San Francisco, Los Angeles, New York City & Chicago) our doors are open for you to come into the office as often as you'd like. Reddit is poised to innovate and grow like never before, and Safety is a critical accelerant of that growth. The Safety org is Reddit’s central Trust & Safety organization, protecting users from bad experiences by stopping harmful content, behaviors, and abuse across the platform. We are looking for a Senior Data Scientist to lead ads fraud detection and scaled enforcement within Safety. You will partner closely with Ads Product, Engineering, Machine Learning, Operations, Policy, Legal, and fellow Safety data scientists to identify emerging ads fraud, define rigorous measurement and evaluation standards, and turn investigations into durable signals, models, rules, and enforcement pipelines. This is a high-impact role with exceptional opportunity for ownership and growth: as an early leader in a greenfield space, you will help define the strategy, shape cross-functional roadmaps, build foundational capabilities, and expand your scope as Reddit’s ads integrity program matures. Responsibilities Lead the measurement and detection strategy for ads fraud by defining fraud taxonomies, labels, sampling plans, metrics, and evaluation frameworks that make performance measurable and defensible. Analyze la

About Comfrt Comfrt LLC is the #1 Hoodie Brand in the U.S. and the #1 Apparel Brand on TikTok globally—built on a mission to support mental health and create everything comfortable for an easy, stress-free, cozy lifestyle. Our elevated basics are worn by millions and loved for their perfect mix of comfort, style, and cultural relevance. Role Overview The CX Social Representative provides hands-on support across Comfrt's TikTok Shop (TTS) ecosystem, focusing on after-sales care including refund-only requests, returns, exchanges, cancellations, and dispute resolution. Representatives ensure SOP compliance, maintain accurate tracker upkeep, and proactively flag risk issues to drive customer satisfaction and protect platform health. Responsibilities may flex to include live chat support as business needs and individual development evolve. Key Responsibilities Customer Experience Manage after-sales cases including refund-only (RO) requests, chargebacks, and disputes with accurate resolution type selection Submit and track claims with fulfillment partners for lost, damaged, or delayed shipments Monitor and respond to product reviews with appropriate tone Resolve standard cases including shipping issues, refunds, returns, exchanges, cancellations, and tracking and delay inquiries Identify and escalate red-flag cases including platform risk issues, fraud and policy abuse, high-dollar disputes, damages outside policy, and anything with potential impact to TTS performance scores As business needs require, respond to real-time customer inquiries through TikTok Shop Seller Center and/or Gorgias using approved macros and SOPs within SLA Process & SOP Compliance Follow SOPs accurately and consistently across all case types and platforms Provide actionable feedback on unclear or outdated SOPs to support continuous improvement Maintain internal trackers with complete, accurate information across defects, complaints, delays, and escalations Team Contribution Participate in