Senior Full-Stack Software Engineer

It's a new day with a new opportunity at 8am! About the role:At 8am, we’re building the next generation of SaaS products that power how professionals work—from payments and compliance to client experience, mobile workflows, and core platform capabilities. As a Senior Software Engineer on our Engineering team, you’ll play a pivotal role in designing, building, and scaling technology used by hundreds of thousands of professionals across the U.S.This role spans a broad set of high-impact initiatives across our product ecosystem. You may work on evolving shared platform services (such as identity, authentication, and APIs), modernizing and scaling core web applications, building mobile experiences for professionals on the go, or shipping new customer-facing functionality that improves how professionals run their businesses.If you’re energized by solving complex technical challenges, collaborating closely with product and design, and shipping software that makes a real, tangible impact, you’ll thrive here.About us:At 8am, our vision is to power a world where professionals thrive. We start every day on a mission to empower professionals with the most trusted, innovative technology to deliver world-class outcomes for their clients and exceptional financial results for their business. They count on our purpose-built solutions to simplify operations, ensure compliance, and fuel profitable growth, so they can focus on their clients and do more of the work that matters.Founded in 2005, 8am™ (formerly AffiniPay) is the professional business platform built to help legal, accounting, and other client-focused professionals run stronger, more profitable businesses. Today, more than 250,000 professionals across the U.S. trust 8am to help them work smarter, serve clients better, and unlock their full potential. We have been recognized as one of Inc 5000’s fastest growing companies in the U.S. for 13 years in a row, and as a result, our teams continue to grow as well!What you'll do:Build & Scale Product ExperiencesDesign and implement scalable web applications using modern frameworks such as Ruby on Rails, React, Node/NestJS, and NextJSModernize existing applications to enhance user experience, performance, and long-term maintainabilityUtilize, contribute to, and evolve reusable UI component librariesWork closely with UX partners to design and ship intuitive, high-quality user experiencesPlatform, Architecture & Backend ContributionsContribute to core platform capabilities that support multiple products (e.g., identity, authentication, APIs, shared services)Help define and evolve backend architectures that enable scalability, reliability, and sustainable growthProactively identify and implement improvements to application performance, scalability, and maintainabilityDesign, build, and maintain backend services and RESTful APIsMobile & Emerging TechnologyBuild or contribute to iOS and Android mobile applications using Expo / React Native, as applicableEvaluate and implement AI-powered features where they create meaningful customer and business valueStay current with emerging technologies and apply them thoughtfully to real-world problemsCollaboration, Delivery & Technical LeadershipPartner with product managers to assess trade-offs, identify risks, and align technical solutions with business goalsCollaborate with engineers, designers, QA, DevOps, and cross-functional stakeholders to deliver outcomes—not just featuresSupport software deployments through debugging, troubleshooting, and coordination with DevOps and QA teamsParticipate in Agile ceremonies including sprint planning, grooming, and retrospectivesMentor and coach other engineers, sharing best practices and helping raise the technical bar across the teamProvide technical expertise in software architecture, design patterns, and maintainable system designAbout you:Bachelor’s degree in Computer Science or a related field, or equivalent professional experience7+ years of experience designing, building, and debugging large-scale, cloud-based applications (with flexibility for deeper senior-level experience)Experience building production-grade applications with React, including reusable components, complex state management, and performance optimization, with comfort contributing across the full stack.Professional experience building and maintaining backend services using Ruby on Rails (or deep experience with a comparable MVC framework).Solid understanding of SOLID principles, software design patterns, and scalable architectureProficiency in SQL and experience working with relational databases such as PostgreSQL or MySQLExperience working in Agile / Lean product development environments (Scrum, Kanban)Comfortable leveraging AI tools and technologies to improve workflows, productivity, or product capabilitiesExcellent communication, collaboration, and documentation skillsDemonstrated experience leveraging AI tools and technologies to improve workflows, enhance decision-making