Staff Software Engineer, Backend – Ledger Engineering

Affirm

Staff Software Engineer developing backend systems for Affirm's Ledger Engineering team enabling audit-grade ledger platform. Collaborating across teams to drive financial product innovation with a focus on reliability.

Posted 7/20/2026full-timeRemote • 🇨🇦 CanadaLead💰 CA$181,000 - CA$241,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing highly available backend systems using Python or Kotlin, while ensuring technical sustainability and operational excellence. Proven ability to lead teams, foster a culture of quality, and effectively communicate across cross-functional teams in financial systems.

Highest-signal resume keywords

Backend System DesignPython DevelopmentAWS TechnologiesKubernetes ManagementFinancial Systems Expertise

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentDistributed SystemsCode Review StandardsTechnical StrategyOperational Processes

Soft Skills

Verbal CommunicationWritten CommunicationTeam LeadershipFeedback IterationCollaboration

Tools & Technologies

AWSMySQLSparkKubernetes

Industry Keywords

Financial SystemsLedgeringTreasuryData AccuracySystem Reliability

Tech Stack

Tools & technologies

AWSDistributed SystemsKotlinKubernetesMySQLPythonSpark

About the role

Key responsibilities & impact

You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.
You will collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed.
You will act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes.
You take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, policies, testing and alerting in place to support “keep the lights on” & on-call efforts.
You will foster a culture of quality and ownership on your team by setting 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.

Requirements

What you’ll need

You have 8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin.
You have an extensive track record of developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes.
You have experience in financial systems, ledgering, treasury or adjacent domains where data accuracy and system reliability are critical.
You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others.
You thrive in ambiguity, and are comfortable moving from low level language idioms all the way to the architecture of large systems to understand how they work.
Your growth and impact trajectory demonstrates that you have mastered gathering and iterating on feedback from your engineering and cross-functional peers.
You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

Benefits

Comp & perks

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