Software Engineer II, Fullstack (Ads Platform)

Affirm; San Francisco (CA); Remote; USD 165,000 - 225,000; Full time

Benefits offered by this job

100% health coverage for you and your

Monthly tech stipends

Flexible time off

Employee stock purchase plan

Job summary

Affirm is seeking a Software Engineer II, Fullstack for the Ads Platform. This remote-first role supports a US-wide team, with base pay guidance aligned to California market ranges. You will design, build and ship web applications, APIs, and collaborate across product, design and analytics to deliver impactful features.

You’ll break work into phases, participate in code reviews, and own growth through feedback and on-call duties in a fast-moving, inclusive environment.

Qualifications

• 1.5+ years of experience as a software engineer.
• Experience shipping web apps using declarative UI frameworks like React.
• Experience designing, developing and launching APIs at scale using languages like Python or Kotlin.
• Ability to write clear, well-tested and extensible code.
• Comfort navigating large code bases and performing code reviews.
• Proactive about growth and seeking feedback from team and stakeholders.
• Strong verbal and written communication for global collaboration.
• Bachelor's degree or equivalent practical experience.

Responsibilities

• Break down larger projects into tasks and deliver in phases with timely collaboration.
• Collaborate with product management, design & analytics on ideation and decisions considering risks and trade-offs.
• Support operations and availability by creating and monitoring metrics and on-call efforts.
• Contribute to team community through growth activities and interview participation.

Skills

React

API design

Python

Kotlin

Code review

Ownership

Communication

Bachelor's degree or equivalent

Education

Bachelor's degree or equivalent

Job description

Software Engineer II, Fullstack (Ads Platform)

Remote US

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.

Our Marketplace is continually evolving to deliver a deeply personalized shopping experience that seamlessly links consumers with merchant partners. By leveraging machine learning alongside rich consumer and merchant data, we aim to simplify and streamline the customer journey around everyday and major purchases with tailored brands, products, deals, and offers. In tandem, we are advancing our Ads Platform which is a key technology that empowers merchant partners to strategically deploy their budgets and reach targeted consumers for maximum incremental impact.

What You'll Do

• With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.
• You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
• You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
• You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

What We Look For

• You have a total of 1.5+ years of experience as a software engineer.
• You have experience shipping web apps using declarative UI frameworks like React.
• You have experience designing, developing and launching APIs at scale using languages like Python or Kotlin.
• You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code.
• You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews.
• Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
• 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 - L

Equity Grade - 6

Employees new to Affirm typically come in at the start of the pay range. Affirm 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 base pay range (CA, WA, NY, NJ, CT) per year: $165,000 - $225,000

USA base pay range (all other U.S. states) per year: $146,000 - $206,000

#LI-Remote

Remote-first with flexibility built in

Affirm 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 Affirm 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 you

• 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 Affirm 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: Affirm considers qualified applicants with arrest and conviction records, as required by law.