Software Engineer II, Backend (Partner Merchant Interface)

Affirm
Canada
Remote

Who this role is best for

Geared toward mid-level engineers comfortable with backend API development and distributed systems, with a focus on collaboration and ownership in a remote-first environment.

Best fit for

  • Mid-level engineers with experience building scalable APIs and working in distributed systems environments
    — “experience designing, developing and launching APIs at scale using languages like Python or Kotlin”
  • Candidates who thrive in a team-oriented culture and are proactive in seeking feedback and growth
    — “Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.”
  • Individuals who are proficient in Python or Kotlin and have a solid grasp of AWS, MySQL, and Kubernetes
    — “You are familiar with the building blocks of distributed systems, and the technologies like AWS, MySQL and Kubernetes.”

Things to consider

  • Candidates must be prepared for in-person onboarding, even though the role is remote-first
    — “All new hires will be invited to attend an in-person onboarding experience.”
  • The role requires a balance between maintaining existing systems and driving new initiatives
    — “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.”

How to stand out

  • Highlight your ability to break down complex projects into manageable phases and deliver them effectively
    — “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.”
  • Emphasize your experience with code reviews and debugging in large codebases
    — “You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews.”
  • Demonstrate your ability to collaborate with product management and design teams on technical decisions
    — “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.”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Mid

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • launch backend systems
  • support product development
  • ensure system availability
Typical background
software engineering experiencebackend development

Skills & requirements

Required

Backend DevelopmentAPI DesignDistributed SystemsAWSMySQLKubernetesPythonKotlin

Preferred

Team CollaborationProduct ManagementTechnical Leadership

Stack & domain

PythonKotlinAWSMySQLKubernetesCommunicationTeamworkProblem-solvingBackendApisIntegrationFinanceHealthcare

About the role

Original posting from Affirm via Greenhouse

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.

#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

Our 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 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.

By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and consent to the use of your personal information as described.

Source: Affirm careers (Greenhouse)

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