Software Engineer II, Backend (Partner Merchant Interface)

Affirm; Hamilton; Remote; CAD 133,000 - 183,000; Full time

Benefits offered by this job

Health coverage for you and dependents

Monthly tech stipends

Flexible time off

Equity rewards (ESPP)

Job summary

Affim is seeking a Software Engineer II to help design, build and scale backend services and APIs used by partners such as Amazon and Stripe. You’ll work with a collaborative team to translate complex problems into robust, well-tested code and participate in growth activities including interviews.

A strong foundation in Python or Kotlin and distributed systems is required. You will join an on-going effort to improve reliability, performance and partner integrations, while supporting multi-phase

Qualifications

• 1.5+ years of software engineering experience.
• Backend systems design, development and launch with Python or Kotlin.
• Experience with distributed systems, AWS, MySQL and Kubernetes.
• APIs built at scale using Python or Kotlin.
• Ability to translate problems into modular, well-tested code.
• Familiar with navigating large code bases and code reviews.
• Strong growth mindset and proactive feedback seeking.
• Bachelor’s degree or equivalent practical experience.

Responsibilities

• Break down projects into tasks and deliver in phases with your team.
• Collaborate with product, design and analytics through the lifecycle.
• Support operations, metrics, on-call duties and reliability.
• Contribute to team growth through interview participation and mentoring.

Skills

Backend development

Python or Kotlin

Distributed systems

API design & development

Code reviews

Ownership & growth mindset

Communication skills

Education

Bachelor’s degree or equivalent

Tools

AWS

MySQL

Kubernetes

Job description

At Affim, 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 Affim, 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 affect 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.