Software Engineer II, Backend (Partner Merchant Interface)

Affirm; San Francisco (CA); Hybrid; CAD 133,000 - 183,000; Full time

Benefits offered by this job

Health coverage

Spending stipents

Equity rewards

Job summary

Affirm is hiring a Software Engineer II for its Partner Merchant Interfaces team. You will design, build, and ship backend services and APIs at scale using Python or Kotlin, working with AWS, MySQL, and Kubernetes.

You will break down complex projects, collaborate across product, design, and analytics, and own the delivery, while supporting operations, metrics, and on-call duties. This remote-first role offers growth and equity opportunities.

Qualifications

• 1.5+ years of experience as a software engineer.
• Experience designing, developing and launching backend systems with Python or Kotlin.
• Familiar with distributed systems and technologies like AWS, MySQL and Kubernetes.
• Experience designing, developing and launching APIs at scale using Python or Kotlin.
• Ability to turn simple problems into multi-component solutions with well-tested, extensible code.
• Comfort navigating large codebases and conducting code reviews.
• Demonstrated commitment to growth and seeking feedback.
• Strong verbal and written communication for a global engineering team.
• Bachelor’s degree or equivalent practical experience.

Responsibilities

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

Skills

Backend design

Python or Kotlin

AWS

MySQL

Kubernetes

APIs at scale

Code reviews

Communication

Ownership & growth

Education

Bachelor’s degree or equivalent practical experience

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 Partner Merchant Interfaces - Integration team within Decisions Foundations is growing and we are looking for a Software Engineer II with a track record of leading projects and initiatives on the Partner Merchant Interfaces Team. You will be part of a fast paced team which is responsible for the APIs that Partners and Merchants use to integrate with affirm, and also power some of our top partners like Amazon and Stripe.

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 designing, developing and launching backend systems and are proficient in one of Python or Kotlin.
• You are familiar with the building blocks of distributed systems, and the technologies like AWS, MySQL and Kubernetes.
• 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.

Pay Grade - L

Equity Grade - 5

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 monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by affirm holdings, inc. (parent company).

CAN base pay range per year: $133,000 - $183,000.

This posting is for an existing vacancy.

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

Our benefits reflect our commitment to care and transparency and flexibility. Here are a few highlights:

• Health coverage at no cost: We cover 100% of premiums for employees and their dependents.
• Spending stipents: Monthly stipents support your tech setup and let your team build with a do you i
• Time rest maybe etc

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.