Senior Full-Stack Software Engineer

Overview

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 Affini Pay) 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!

Build & Scale Product Experiences

• Design and implement scalable web applications using modern frameworks such as Ruby on Rails, React, Node/NestJS, and NextJS
• Modernize existing applications to enhance user experience, performance, and long-term maintainability
• Utilize, contribute to, and evolve reusable UI component libraries
• Work closely with UX partners to design and ship intuitive, high-quality user experiences

Platform, Architecture & Backend Contributions

• Contribute 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 growth
• Proactively identify and implement improvements to application performance, scalability, and maintainability
• Design, build, and maintain backend services and RESTful APIs

Mobile & Emerging Technology

• Build or contribute to iOS and Android mobile applications using Expo / React Native, as applicable
• Evaluate and implement AI-powered features where they create meaningful customer and business value
• Stay current with emerging technologies and apply them thoughtfully to real-world problems

Collaboration, Delivery & Technical Leadership

• Partner with product managers to assess trade-offs, identify risks, and align technical solutions with business goals
• Collaborate with engineers, designers, QA, Dev Ops, and cross-functional stakeholders to deliver outcomes—not just features
• Support software deployments through debugging, troubleshooting, and coordination with Dev Ops and QA teams
• Participate in Agile ceremonies including sprint planning, grooming, and retrospectives
• Mentor and coach other engineers, sharing best practices and helping raise the technical bar across the team
• Provide technical expertise in software architecture, design patterns, and maintainable system design

• Bachelor s degree in Computer Science or a related field, or equivalent professional experience
• 7+ years of experience designing, building, and debugging large-scale, cloud-based applications (with flexibility for deeper senior-level experience)
• Experience building production-grade…