Joblaze summary

In this role, the Senior Software Engineer will lead a team in developing and maintaining backend systems that enhance Trust & Safety at Affirm, focusing on fraud prevention and risk management. Proficiency in languages like Python or Kotlin, along with experience in AWS, MySQL, and Kubernetes, is essential for building scalable, reliable systems. This position is ideal for someone with over four years of experience in backend development who can navigate complex technical challenges and foster team collaboration. Affirm's remote-first culture supports flexibility while emphasizing a commitment to quality and ownership.

Joblaze insights

Listed today — first seen on Joblaze November 11, 2026. Last confirmed on Affirm's careers page November 11, 2026.
This exact title is also open at 1 other location at Affirm: United States.
Starts above 26% of 34 comparable senior backend roles in Canada that list Python we track (median $108,411 across 13 companies). See Python salary trends
Python appears in 47.5% of 80 comparable senior backend roles in Canada; MySQL appears in 15% of 80 comparable senior backend roles in Canada.

Quick facts

Is the Senior Software Engineer, Backend (Trust & Safety) 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 (Trust & Safety) role.
What's the tech stack?: Joblaze extracted these technologies from the posting: AWS, Kotlin, Kubernetes, MySQL, Python.
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 (Trust & Safety) 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.

Trust & Safety Engineering protects Affirm’s consumers, merchants, and network from fraud and abuse. We build the real-time systems, risk signals, and tools that stop bad actors without adding friction for the people we serve. Our engineers work with data science, risk, and operations to stay ahead of evolving threats at scale

You will be matched with a role after completing the interview evaluation process. Your recruiter will work closely with you throughout the process to understand your interests and experience to find the strongest role fit.

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.
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 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.

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.

Senior Software Engineer, Backend (Trust & Safety)

What you’ll do

What we look for

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