Senior Software Engineer, Backend (Partner Merchant Interface)

Affirm
Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, Saskatchewan
Workplace: RemoteFull timeUSD 153,000 - 213,000 annuallyFunction: Software EngineeringSkills: ["Collaboration","Communication","Ownership","Proactive learning","Code review feedback"]

Build and evolve the Partner Merchant Interface APIs that partners and merchants use to integrate with Affirm, supporting high-impact customers like Amazon and Stripe. Work with a fast-moving integration team on distributed backend systems, balancing speed, reliability, and code quality. Collaborate with stakeholders, navigate a large codebase, debug and review code, and deliver well-tested, extensible services using Python or Kotlin and cloud-native technologies.

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Affirm
Affirm
1 day ago

Senior Software Engineer, Backend (Partner Merchant Interface)

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Source: Company careers pageValidated by: Fursa AI
Last checked: 5 hours agoStatus: Live

Job Summary

Build and evolve the Partner Merchant Interface APIs that partners and merchants use to integrate with Affirm, supporting high-impact customers like Amazon and Stripe. Work with a fast-moving integration team on distributed backend systems, balancing speed, reliability, and code quality. Collaborate with stakeholders, navigate a large codebase, debug and review code, and deliver well-tested, extensible services using Python or Kotlin and cloud-native technologies.
Location: Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, Saskatchewan
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Work on tasks that contribute to the team’s projects and goals.
  • •Collaborate with team and stakeholders, aligning on risks and trade-offs.
  • •Deliver work with the right balance of speed and quality while protecting system reliability.
  • •Engage in growth and development activities to help build team community.
  • •Write, test, and maintain backend services and contribute to codebase health through debugging and code reviews.

Pay and Benefits

Salary: USD 153,000 - 213,000 annually
Perks:Health InsuranceDentalVisionEspp

Key Requirements

  • •Previous work or internship experience designing, developing, and launching backend systems at scale.
  • •Experience with one of Python or Kotlin.
  • •Familiarity with the building blocks of distributed systems.
  • •Proficiency writing clear, well-tested, extensible code that integrates multiple software components.
  • •Comfort navigating a large codebase, debugging, and contributing through code reviews.
Skills:CollaborationCommunicationOwnershipProactive learningCode review feedback
Languages:English
Tech Stack:PythonKotlinAWSMySQLKubernetesAPIsDistributed systems

Company Brief

Affirm
Provides point-of-sale lending and buy-now-pay-later (BNPL) solutions for consumers and merchants, enabling installment payments, consumer financing, and embedded financial services through APIs and partnerships with retailers and platforms.
Industry: Lending
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: San Francisco, United States
Founded: 2012
WebsiteLinkedIn