Senior Software Engineer, Backend (Marketing & Privacy Engineering)

Remote · CAD 153,000-213,000 / month · 4+ years experience · Remote · Posted Oct 9, 2026

At a glance

As a Senior Software Engineer in Marketing & Privacy Engineering (MPE) at Affirm, you will build trusted, privacy-aware consumer web experiences and measurement systems that enable sustainable growth.
You will work at the intersection of data engineering and marketing technology, building reliable pipelines, identity and event data systems, attribution and conversion measurement, and integrations across marketing and data ecosystems.

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.

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 hands-on experience building marketing data and measurement systems using technologies such as Google Tag Manager (GTM/sGTM), GA4, advertising and conversion APIs, customer data platforms (CDPs), attribution or mobile measurement platforms, and consent management platforms.
You have experience building production data pipelines and analytical models using technologies such as Snowflake, dbt, and Airflow, including event-level data, identity resolution, attribution, or conversion measurement.
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.

Health coverage at no cost: 100% of premiums covered for employees and their dependents
Monthly stipends to support your tech setup, health, and wellness options
Flexible time off and generous holiday calendars
Employee stock purchase plan (ESPP) to buy Affirm stock at a discount

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.
Remote-first with flexibility built in.
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.