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Senior Software Engineer, Backend (Batch Infrastructure)

Join Affirm as a Senior Software Engineer to lead backend development for scalable batch infrastructure in a remote-first environment.

Location
Remote Canada
Compensation
CA$153k–CA$213k/yr
Level
senior
Type
full time · Remote

Posted by employer 2 months ago

First seen on Joblaze 2 months ago

Last verified on the company career page 21 hours ago

Requirements

Experience
4+ years
Education
Bachelor's degree

Not disclosed in this posting: visa sponsorship.

Benefits

Flexible Spending Wallets Employee Stock Purchase Plan Time off Equity/Stock Options Remote Work Health Insurance

Joblaze summary

In this role, the Senior Software Engineer will lead a team in developing and maintaining a robust backend infrastructure that supports critical batch workloads at Affirm. Key skills include expertise in Python or Kotlin, experience with AWS and Kubernetes, and familiarity with workflow orchestration tools like Airflow or Prefect. This position is ideal for someone with over four years of experience in backend systems who thrives in a collaborative environment and is adept at navigating complex technical challenges. Affirm's rapid growth underscores the importance of building reliable frameworks to support its evolving needs.

Joblaze insights

  • Listed about 2 months ago — first seen on Joblaze August 6, 2026. Last confirmed on Affirm's careers page October 9, 2026.
  • This exact title is also open at 1 other location at Affirm: Remote US.
  • Starts above 36% of 39 comparable senior backend roles in Canada that list Python we track (median $107,512 across 13 companies). See Python salary trends
  • Python appears in 51.3% of 80 comparable senior backend roles in Canada; Temporal appears in 2.5% of 80 comparable senior backend roles in Canada.

Quick facts

Is the Senior Software Engineer, Backend (Batch Infrastructure) role remote?
Yes — Affirm lists this as a fully remote position.
What's the salary range?
Affirm lists CAD 153,000–CAD 213,000 for this role.
How much experience is required?
At least 4 years of relevant experience for this Senior Software Engineer, Backend (Batch Infrastructure) role.
What's the tech stack?
Joblaze extracted these technologies from the posting: AWS, Airflow, Flink, Flyte, Kotlin, Kubernetes.
What seniority level is this role?
Affirm targets senior candidates for this position.
Is this full-time or contract?
Full-time for this Senior Software Engineer, Backend (Batch Infrastructure) role at Affirm.

From the original posting

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 vision for the Batch Infra team @ Affirm team is to provide reliable, scalable, self-serve and Affirm-optimized compute solution to enable ML, Product, and Financial Engineering success. Our team is responsible for building and maintaining compute platform that serves as a backbone for processing various Business critical batch workloads at Affirm through a wide suite of scheduled and on-demand compute solutions built on the cloud. Affirm is growing rapidly and so is the need for reliable and high availability frameworks. If solving infrastructure challenges at scale excites you, come join us!

What you’ll do

  • You will be responsible for owning and delivering quarterly goals for your team, leading engineers on your team through ambiguity to solve open-ended problems, and ensuring that everyone is supported throughout delivery.
  • 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 proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
  • 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 foster a culture of quality and ownership on your team by setting or improving 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 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin.
  • You have a track record of developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes.
  • Experience building and managing Workflow Orchestration frameworks like Airflow, Flyte, Prefect, Temporal, Luigi, etc.
  • Experience with or working knowledge for efficiently scaling frameworks like Spark/Flink for extremely large scale datasets on Kubernetes.
  • You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
  • You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
  • 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

This remote role is open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan

Pay Grade - N

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.)

CAN base pay range per year: $153,000 - $213,000 CAD

#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.

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.

Standard company text repeated across Affirm's postings is omitted here.

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