Senior Software Engineer, Platform

About the position

Alloy helps solve the identity risk problem for companies that offer financial products by enabling them to outpace fraud and confidently serve more people around the world. Over 600 of the world's largest financial institutions and fintechs turn to Alloy to take control of fraud, credit, and compliance risk, and grow with the clearest picture of their customers. Through our values: Be Bold, Get Scrappy, Collaborate, and Celebrate Our Differences, we are creating a workplace where you can grow, thrive, and belong. See how we've been continuously recognized and named one of Inc. Magazine's Best Workplaces, Forbes America's Best Startup Employers, Best Fintech to Work for by American Banker, year after year.

Responsibilities

• Building and maintaining core platform services and internal tools that enable Alloy engineers to move faster and more securely
• Leading development on frontend foundations for capabilities like SSO/SAML provisioning, audit log and access management (roles and permissions), and developer-facing tooling & management (observability, real user monitoring, reporting etc)
• Contributing to platform APIs, reliability, and cross-cutting features like access control, observability, and CI/CD
• Collaborating with design, product and platform engineers to develop systems that scale across the engineering org
• Actively participating in frontend, testing and design system guilds to collaborate and improve frontend reliability and performance of our platform

Requirements

• 5+ years experience as a full-stack engineer with meaningful contributions to platform initiatives
• Strong frontend experience with modern frameworks (e.g., React) and building reliable, intuitive internal tools
• Deep understanding of custom domain experiences, authentication, access control, observability, and CI/CD tooling
• Proficiency in Node.js, Typescript, Docker, and cloud infrastructure (AWS or equivalent)
• Prior experience in platform engineering, internal tooling, or developer experience teams highly preferred

Nice-to-haves

• Experience with SSO/SAML/SCIM or other provisioning/auth patterns
• Familiarity with building tools for secure PII handling, test data, or permissions systems preferred

Benefits

• Unlimited PTO and flexible work policy
• Employee stock options
• Medical, dental, vision plans with HSA (monthly employer contribution) and FSA options
• 401k with 100% match up to 4% of annual employee compensation
• Eligible new parents receive 16 weeks of paid parental leave
• Home office stipend for new employees
• Annual Learning & Development annual stipend
• Well-being benefits include access to ClassPass, OneMedical, and Spring Health
• Hybrid work environment: employees are expected to work Tuesdays and Thursdays from our HQ in Union Square, Manhattan