Senior Full-Stack Software Engineer

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:

• 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

• 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

• 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

• Partner with product managers to assess trade-offs, identify risks, and align technical solutions with business goals
• Collaborate with engineers, designers, QA, DevOps, and cross-functional stakeholders to deliver outcomes—not just features
• Support software deployments through debugging, troubleshooting, and coordination with DevOps 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

About you:

• 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 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 architecture
• Proficiency in SQL and experience working with relational databases such as PostgreSQL or MySQL
• Experience working in Agile / Lean product development environments (Scrum, Kanban)
• Comfortable leveraging AI tools and technologies to improve workflows, productivity, or product capabilities
• Excellent communication, collaboration, and documentation skills
• Demonstrated experience leveraging AI tools and technologies to improve workflows, enhance decision-making, or drive innovation.

Preferred Qualifications:

• Experience designing and building distributed systems or shared platform services
• Familiarity with authentication and authorization standards (OAuth 2.0, OIDC, SAML)
• Experience with asynchronous messaging systems (e.g., Kafka, AWS SQS)
• Experience with cloud platforms such as AWS or Google Cloud Platform
• Experience with NodeJS, NextJS, and modern frontend technologies (Bootstrap, Tailwind)
• Experience building mobile applications using Expo / React Native
• Experience deploying applications with Docker and Kubernetes
• Background building scalable SaaS products

Additional Information
The annual salary range for this position is $130,000 to $190,000. The salary range for performing this role outside of the US / Austin / California may differ.  8am is committed to offering competitive, fair and commensurate compensation and has provided an estimated pay range for this role. Actual compensation may vary based on job-related knowledge, skills, experience and education.
Why 8am: 

At 8am, our culture is shaped by the people who bring it to life every day. Together, we build a company rooted in continuous learning, genuine community, holistic wellness, and meaningful engagement—values that empower us as individuals and unite us as a team. Our culture is grounded in our core values: Work Smart, Win Fast; Outshine Ordinary, and We Find a Way. These values drive how we serve our customers and work with each other in a collaborative, inspiring, and empowering environment, every day.

Here’s how we support our 8Team:

• Health Insurance Coverage: We offer our 8Team a variety of medical, dental, and vision plans, designed to fit your needs, including a 100% company-paid HDHP plan for employees.
• Financial perks: We offer a competitive compensation and benefits package including annual bonuses, equity options and 401(k) or RRSP if in Canada, with a company match for all team members.
• Time for what matters: Flexible Time Off, paid holidays, and a parental leave program for our new parents.
• Wellness: Wellness stipends, mental health support, and one-on-one nutrition coaching.
• Learning and Development: Continuous learning through 8am.edu, leadership programs, professional development funds, and individually focused talent development.
• Giving back to the communities around us: Participate in our charitable matching gift program, paid time off for volunteer service, and company-sponsored volunteer events (both local and virtually).
• Engagement: Virtual and in-person team-building events, quarterly award recognition through our Rise & Shine Award of Excellence Program, and our peer-to-peer appreciation platform.

At 8am, we don’t just offer benefits - we create an environment where people can thrive, grow, and make a real impact every day.

Diversity, equity & inclusion at 8am:

At 8am, we recognize that innovation occurs with a strong team of people who are diverse in background, personality, talent and ideas. Experience comes in many forms and ensuring a diverse and inclusive workplace where we continue to learn from each other is an integral part of our culture. We are committed to creating a welcoming and transparent environment for all that embraces those differences through education, equal access to opportunities and information, inclusionary programs, and community outreach. 

Security advisory:

Our hiring teams at 8am are dedicated to recruiting top talent that share our passion for serving the professional services industry through innovative financial technology.  As such, our Talent Acquisition Team only follows legitimate hiring practices.  We will always communicate with our candidates using emails with the 8am domain and will never ask for sensitive/personal data during the application process.  All interviews take place over phone call, Zoom/Google Meet or in person.  All offers are communicated verbally by our Talent Acquisition Specialists with a written offer letter as a follow up.