--- title: 'Full Stack Engineer (FSE) at Wyllo' canonical: 'https://feeny.ai/job/full-stack-engineer-fse-wyllo-montreal-nbbvn4vybwr8' type: 'job' last_seen: '2026-09-11' --- # Full Stack Engineer (FSE) at Wyllo - **Company:** Wyllo - **Location:** Montréal, Canada - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-06-16 - **Last confirmed live:** 2026-09-11 - **Apply:** https://jobs.gem.com/nofraud/am9icG9zdDrA0h7pPWPz7kF7mhp_-e-c ## Job description ## About Wyllo Wyllo is a CX-first, end-to-end risk intelligence platform that helps ecommerce merchants manage fraud, policy abuse, and customer experience across the entire commerce lifecycle. By combining identity signals with behavioral intelligence, Wyllo enables merchants to better understand shopper intent and make smarter decisions across checkout, returns, refunds, and customer support. Wyllo works with leading ecommerce brands and integrates directly into the platforms where merchants manage orders and customer interactions. Learn more at www.wyllo.ai ## About the Role We’re looking for a Full Stack Developer to design, build, and enhance features across our backend services and frontend applications. You will work in Node.js/NestJS/TypeScript for backend logic and React/Tailwind CSS for user interfaces, ensuring smooth API integrations and delivering high-quality, user-facing functionality. You will - Develop and maintain backend services and REST APIs using NestJS, TypeScript, and MySQL. - Implement frontend components and views in React and Tailwind CSS based on product specifications. - Integrate APIs seamlessly between backend and frontend. - Support and enhance Kafka messaging infrastructure. - Collaborate with product and design teams using Figma assets. - Ensure code is performant, maintainable, and accessible. - Use AI tools like Cursor.AI to accelerate development with strong prompting skills. You have - 3–5+ years of professional experience working in full stack development. - Strong knowledge of React, Tailwind CSS, Node.js, NestJS, TypeScript, and MySQL. - Experience with Kafka or similar messaging systems. - Familiarity with REST APIs and backend integration workflows - Proficiency in using AI coding tools such as Cursor.AI as a co-pilot, with strong prompting skills to accelerate development - Experience working with design tools like Figma to translate mockups into production-ready components - Strong communication and teamwork skills - Experience with using Atlassian tools such as JIRA and Confluence - Comfort working in an agile, cross-functional team environment. A plus, but not required - Degree or Advanced Degree (Ph.D. or Master’s) in Computer Science, AI, Data Science, or related field. - Experience in e-commerce, fraud, anomaly detection, or financial data modeling. - Experience with Ruby and Ruby on Rails is a plus - Experience with Bootstrap is a plus Working at Wyllo We’re a high-performing team that is passionate about making commerce a safe, wonderful experience for Brands and Consumers.  Our community is driven by values that shape everything we do. We seek passionate and dedicated individuals who align with our core principles; Integrity, Pride, Humility and Impact. - ​​Integrity: We do the right thing, even when it’s tough, and even if no one sees it. We always consider the customer’s best interest in every decision we make. - Pride: We know that the work we do is important, and we take great pride in doing it well. We show up every day with the best intentions, ready to deliver superb outcomes for our team, our customers, and ourselves. - Humility: We leave our egos at the door, approaching problems as a team, with openness and collaboration. We’re willing to be wrong in order to get things right. - Impact: We are results-oriented, we take ownership, and we hold ourselves accountable to get things done and deliver results. If you are excited to collaborate in a fast-paced, purpose-driven environment where your contributions truly matter, we’d love to have you join us! ## Equal Employment Opportunity Wyllo LLC provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics, sexual orientation, political affiliation, military veteran status, domestic violence victim status, or any other protected characteristic under applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training. ## About Wyllo ## Company Overview - **One-liner**: Wyllo is a CX-first risk intelligence platform that helps ecommerce merchants manage fraud, policy abuse, and customer experience across the entire commerce lifecycle. - **Entity Type**: Private (Seed Stage) - **Headquarters**: New York, New York, United States - **Founded**: The company was formed through the rebranding and merger of NoFraud and Yofi in March 2026. NoFraud was founded earlier. - **Founders**: Not publicly listed for the combined entity. The company was created alongside CX leaders. ## Core Business - **Primary Industry**: Ecommerce Fraud Prevention & Risk Intelligence / Software Development - **Target Customers**: B2B – Ecommerce merchants (mid-market to enterprise), CX and operations leaders - **Mission/Purpose**: To help teams intelligently manage risk and reward, enabling trust-based customer experiences without introducing risk. ## Products & Services Wyllo offers a unified, end-to-end risk intelligence platform with these key modules: - **Payment Fraud Protection**: AI-powered ecommerce fraud screening, backed by human fraud experts, to maximize accuracy and flexibility for merchants. - **Bot and Reseller Detection**: Stops bots and unauthorized resellers from exploiting discounts and depleting inventory. - **Return Fraud and Abuse Prevention**: Uses advanced risk models to spot suspicious behavior and enables personalized return policies. - **Claim and Policy Abuse Prevention**: Identifies risk and intent upstream to prevent account takeovers (ATO) and abuse from turning into refunds or chargebacks. - **Chargeback Management**: AI-driven dispute workflows to win more cases with less effort. - **CX Support Integration**: Embeds risk scores and next-best actions inside CX tools (e.g., Salesforce Service Cloud, Kustomer, Gorgias), turning support touchpoints into risk intelligence. ## Market Standing - **Valuation/Market Cap**: Not publicly disclosed (Private company). - **Key Metric**: Total Funding – The company has raised funds across multiple rounds: - Non-Equity Assistance (2024-01-16): Led by Visa Inclusive Fintech Accelerator. - Pre-Seed Round (2022-02-28): Led by Kickstart (5 investors). - Seed Round (2024-06-14): 2 investors. - **Notable Investors/Partners**: Visa Inclusive Fintech Accelerator, Kickstart. - **Growth Signals**: - Rebranded and integrated NoFraud and Yofi into a single platform in March 2026, signaling strategic consolidation and expansion. - Reports a **1.6% Revenue Lift** and **70% Fewer Chargebacks** for clients. - Works with notable ecommerce brands including **Everlane**, **Grüns**, and **HexClad**. - Integrates with major platforms like Salesforce Service Cloud, Kustomer, Gorgias, Happy Returns, and Seel. ## Competitive Advantages - **Unified, End-to-End View**: Unlike fragmented solutions that silo pre-purchase, checkout, and post-purchase data, Wyllo combines identity and behavioral signals from the entire customer journey into a single intelligence layer. - **CX-First Approach**: The platform is designed to enhance customer experience, not just block fraud. It helps merchants make the right decision for each customer in each moment, reducing friction for good customers. - **Embedded Intelligence**: Risk scores and next-best actions are embedded directly into merchant workflows (CX tools, returns platforms), making it actionable for operations and support teams. - **Focus on Intent**: Moves beyond simple identity-based fraud detection to understand shopper intent through behavioral patterns, distinguishing between legitimate customers, policy abuse, and organized fraud. ## Strategic Focus - **Platform Unification**: Continuing to integrate and build upon the combined capabilities of NoFraud and Yofi to deliver a single, cohesive risk intelligence platform. - **Deepening Integrations**: Expanding partnerships with ecommerce platforms and CX tools to embed risk intelligence more deeply into merchant workflows. - **Growth & Hiring**: Actively hiring for key roles (Sr. DevOps Engineer, Enterprise AE, Head of Growth, Senior Quality Engineer, Senior Accountant, GTM Operations Manager), indicating a focus on scaling the team and go-to-market operations. ## Why Work Here - **Culture of Impact**: The company describes itself as built with "changemakers" who are "obsessed with understanding your business" and "adapting quickly, curiosity, and thinking ahead." They seek people who "don’t just do the job, they change how it’s done." - **High-Growth Environment**: As a recently rebranded, funded startup with a clear product-market fit and active hiring, this is an opportunity to join a company at an inflection point and have significant impact. - **Remote/Hybrid/Office**: The headquarters is in New York, NY. Job postings list locations like "United States," suggesting a flexible or remote-first policy for many roles. - **Notable Tech Stack**: Employees get exposure to a modern tech stack including: Python, Salesforce, HubSpot, Playwright, Jenkins, Terraform, and more. - **Headcount**: Approximately 72 employees, offering a small-team environment where individual contributions are highly visible. ## Sources 1. [wyllo.ai](https://wyllo.ai/) 2. [wyllo.ai/about](https://wyllo.ai/about/) 3. [LinkedIn - Wyllo](https://www.linkedin.com/company/-wyllo-ai) 4. [wyllo.ai - Rebranding Announcement](https://wyllo.ai/nofraud-rebrands-as-wyllo-introducing-a-cx-first-approach-to-ecommerce-risk-intelligence/) 5. [wyllo.ai - Team Page](https://wyllo.ai/about/our-team/) ## Other roles at Wyllo - [GTM Operations Manager](https://feeny.ai/job/gtm-operations-manager-wyllo-united-states-8zb69nnmv07r) — United States - [Associate Fraud Analyst](https://feeny.ai/job/associate-fraud-analyst-wyllo-casablanca-wbptyd9gd9tm) — Casablanca, Morocco - [Account Executive, Mid-Market](https://feeny.ai/job/account-executive-mid-market-wyllo-united-states-vf254h8y3yf4) — United States - [Account Executive, Enterprise](https://feeny.ai/job/account-executive-enterprise-wyllo-united-states-ntc5j1n3h94j) — United States