A Staff Software Engineer, Fullstack (Account Management) Affirm · Remote US Principal Python React Kubernetes

ContentBuffer; United States; Remote; USD 230,000 - 290,000; Full time

Benefits offered by this job

Health coverage and dependent coverage

Monthly tech stipends

Flexible time off

Employee stock purchase plan (ESPP)

Job summary

Affirm is seeking a senior software engineer to own technical strategy for an account-management security-focused team within the Trust & Safety space. You will help design scalable backend systems, collaborate across product, design and analytics, and drive quality through established conventions and on-call readiness.

You will lead by example, mentoring teammates and shaping architecture for large, complex systems while communicating effectively with a global engineering audience.

Qualifications

• 8+ years of software engineering experience.
• Proficient in designing, developing and launching backend systems at scale using Python/Kotlin/AWS/Kubernetes.
• Proficient in developing web apps with React or Vue.
• Experience delivering major features or deprecating functionality with a clear technical plan.
• Comfort with ambiguity and understanding architecture of large systems.
• Strong communication with cross-functional teams.
• Equivalent practical experience or a Bachelor's degree in a related field.

Responsibilities

• Set technical strategy for the team on an annual horizon.
• Collaborate with product, design, and analytics to ensure sustainable tech decisions.
• Act as a force-multiplier for the team with solutions and processes.
• Own team operations, monitoring, and on-call readiness to keep systems running.
• Establish code review and design standards and promote them beyond the team.
• Mentor teammates and lead by example.

Skills

Backend design & scale

Python

Kotlin

AWS

MySQL

Kubernetes

React

Vue

Education

Bachelor's degree in a related field

Tools

Jenkins

CI/CD

Job description

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.

The Account Management team is part of Trust & Safety within Affirms Checkout organization. We build secure, intuitive experiences that help customers protect, manage, and recover access to their accounts. Our mission is to make account security seamless without adding unnecessary friction, ensuring customers can confidently use Affirms when and where they need it.

Our work spans the full account security journey - from detecting and preventing unauthorized access to enabling self-service recovery and reducing the need for customer support. We own critical experiences like Self-Service Phone Change, Settings & Security Center, and account information updates. These solutions directly impact customer trust, fraud prevention, and Affirms ability to scale safely.

We're looking for someone who takes ownership, thrives in complexity, and enjoys turning difficult security challenges into simple, meaningful customer experiences.

What You'll Do

• You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.

• You will collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed.

• You will act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes.

• You take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, polcities, testing and alerting in place to support “keep the lights on” & on-call efforts.

• You will foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.

• You will help develop talent on your team by providing feedback and guidance, and leading by example.

What We Look For

• You have a total of 8+ years of experience as a software engineer.

• You are proficient in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes

• You are proficient in developing web apps using declarative UI frameworks like React or Vue.

• You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others.

• You thrive in ambiguity, and are comfortable moving from low level language idioms all the way to the architecture of large systems to understand how they work.

• Your growth and impact trajectory demonstrates that you have mastered gathering and iterating on feedback from your engineering and cross-functional peers.

• You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

• This position requires either equivalent practical experience or a Bachelor’s degree in a related field.

Base Pay Grade - P

Equity Grade - 13

Employees new to Affirms typically come in at the start of the pay range. Affirms focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills.

Base pay is part of a total compensation package that may include equity rewards, monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents.)

USA Pacific base pay range (CA, WA, NY, NJ, CT): $230,000 - $290,000

USA Sapphire base pay range (all other U.S. states): $204,00 - $264,000

Remote-first with flexibility built inAffirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirms office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.

Benefits designed for youOur benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:

• Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
• Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.
• Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.
• Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirms stock at a discount.

We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.

For positions based in San Francisco or Los Angeles: Affirms considers qualified applicants with arrest and conviction records, as required by law.