---
title: 'Senior Software Engineer, Backend (Authentication Experience) at Affirm'
canonical: 'https://feeny.ai/job/senior-software-engineer-backend-authentication-experience-affirm-canada-trqam23grr72'
type: 'job'
last_seen: '2026-09-06'
---

# Senior Software Engineer, Backend (Authentication Experience) at Affirm

- **Company:** Affirm
- **Location:** Canada
- **Work type:** remote
- **Posted:** 2026-08-26
- **Last confirmed live:** 2026-09-06
- **Apply:** https://job-boards.greenhouse.io/affirm/jobs/7819891003

## Job description

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.

Auth Experience owns the customer journeys during authentication, verification, and fraud journeys. You'll work to build the backend orchestration layers that drive our Web and Mobile surfaces. In this role, you will need to gain a deep understanding of the business, product and engineering context, and utilize that context to own and deliver high-availability and low-latency systems that Affirm customers use every day.

## 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 working close to the web and mobile layers, with an understanding of frontend design patterns such as fraud prevention and backend-for-frontend.
- 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.

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 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: CAD $153,000 - $213,000.

Location - Remote Canada 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.

This posting is for an existing vacancy.

#LI Remote

Affirm is proud to be a remote-first company! The majority of our roles are remote and you can work almost anywhere within the country of employment. Affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned Affirm office. A limited number of roles remain office-based due to the nature of their job responsibilities.

We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first. Some key highlights of our benefits package include:

- Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
- Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
- Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
- ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount

We believe It’s On Us to provide an inclusive interview experience for all, including people with disabilities. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process.

[For U.S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, Affirm will consider for employment qualified applicants with arrest and conviction records.

By clicking "Submit Application," you acknowledge that you have read Affirm's [Global Candidate Privacy Notice](https://www.affirm.com/global-candidate-privacy-notice) and hereby freely and unambiguously give informed consent to the collection, processing, use, and storage of your personal information as described therein.

## About Affirm

## Company Overview
- **One-liner**: Affirm is a financial technology company that offers transparent, flexible buy now, pay later (BNPL) installment loans, a debit card, and a savings account, enabling consumers to pay over time without hidden fees.
- **Entity Type**: Public (NASDAQ: AFRM)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2012
- **Founders**: Max Levchin, Nathan Gettings, Jeffrey Kaditz, Alex Rampell

## Core Business
- **Primary industry**: Financial services – point-of-sale lending, digital payments, consumer banking.
- **Target customers**: B2C (consumers seeking flexible payment options) and B2B (merchants of all sizes, from SMBs to enterprise retailers).
- **Mission or purpose statement**: To deliver honest financial products that improve lives, offering transparency with no late fees or hidden charges.

## Products & Services
- **Adaptive Checkout**: An AI-powered checkout flow that optimizes payment options for each consumer.
- **AdaptAI**: A suite of AI tools for merchants to personalize offers and manage risk.
- **BoostAI**: An AI-driven feature that dynamically adjusts installment terms to increase approval rates.
- **Split Pay**: A BNPL product that lets consumers split purchases into biweekly payments.
- **Affirm Card**: A Visa debit card that allows cardholders to pay over time at any merchant that accepts Visa.
- **Affirm Money Account**: A high-yield savings account and debit card, held with Cross River Bank, Member FDIC.

## Market Standing
- **Valuation/Market Cap**: USD 5.17 billion (as of July 2026)
- **Key Metric**: Annual Revenue – USD 3.22 billion (trailing twelve months as of Q3 FY2026). Total funding raised (including debt financing) – USD 9.57 billion.
- **Notable Investors/Partners**: Partners include Bed Bath & Beyond, Royal Caribbean, Stripe (UK), Google, Costco, and Backcountry. Investors include Morgan Stanley, Sixth Street, and CPP Investments.
- **Growth Signals**: Nearly 27 million active consumers, 515,000 active merchants, and over $46 billion in Gross Merchandise Volume (LTM as of March 31, 2026). Revenue grew to $3.22B, and the company achieved positive net income of $52M in FY2025. Headcount increased 1.1% YoY to 2,132 employees, with active job postings up 103.8% year-over-year.

## Competitive Advantages
- **Transparency-first model**: No late fees, no compounding interest – a key differentiator in the BNPL space.
- **Machine learning underwriting**: Proprietary risk models that evaluate each transaction in real-time, reducing defaults while maintaining high approval rates.
- **Large merchant network**: 515,000+ active merchants, including major retailers, providing broad consumer reach.
- **Integrated ecosystem**: The Affirm Card and Money Account create a sticky financial platform beyond just checkout loans.

## Strategic Focus
- **International expansion**: Currently operating in the U.S., Canada, and the UK, with recent partnerships (e.g., Stripe in UK, Royal Caribbean in UK/Canada) signaling further global growth.
- **AI & personalization**: Continued investment in AI tools (AdaptAI, BoostAI) to improve merchant conversion and consumer experience.
- **Affirm Card growth**: Driving adoption of the card as a daily payment method, with 4.4 million card active consumers.
- **Capital partnerships**: Renewing and expanding capital partnerships (e.g., CPP Investments) to fund loan origination.

## Why Work Here
- **Remote-first culture**: Most roles are remote within the employee’s home country, with a simple, transparent compensation structure.
- **Generous benefits**: 18 weeks of paid parental leave for birth and non-birth parents, plus a 4-week return-to-work transition at full pay. 20 company-wide paid days off (“Away Days”) to collectively recharge. Flexible time off, mental healthcare programs, and “spending wallets” for tech, food, lifestyle, and family planning.
- **Learning & development**: Exciting learning programs to level up growth.
- **Employee community**: Active employee resource groups and supportive communities.
- **Compensation**: Transparent, flexible, remote-first structure. Example: Senior Software Engineer median salary ~$207,029/year.
- **Workplace ratings**: 3.8/5 on LinkedIn (638 reviews), with compensation rated 4.4/5, culture 3.6/5, and work-life balance 3.6/5.
- **Engineering culture**: Heavy technical team (29% of workforce in engineering/technical roles), with strong talent from PayPal, Amazon, Google, and Stripe.

## Sources
1. [affirm.com/careers](https://www.affirm.com/careers)
2. [linkedin.com/company/affirm](https://www.linkedin.com/company/affirm)
3. [investors.affirm.com/newsroom](https://investors.affirm.com/news-events/newsroom?page=1)

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