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Senior Backend Engineer - Scale & Integrations (Remote)

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65% 3 of 4 skills

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Work format: Remote
Location: San Diego Country Estates, United States
Region: North America
Grade: Senior
Category: Backend
Country
Relocation: Not supported
Company: Product
Domains: FinTech

whatjobs Posted Aug 1, 2026

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Summary

Build and scale backend systems for Affirm’s fintech platform using Python or Kotlin, focusing on checkout and merchant integrations while leading engineering teams.

Affirm is a remote-first company reinventing credit with transparent, consumer-friendly terms. We build backend systems that scale to power our mission, from checkout to merchant onboarding, using Python or Kotlin and modern cloud technologies.

You will own quarterly goals, lead engineers, collaborate across product, design and analytics, and drive high-impact technical decisions while maintaining a culture of quality and ownership.

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Affirm

last week

Senior Backend Engineer - Scalable, Reliable Systems (Remote)

RemoteNorth AmericaSenior H-1B sponsor history USCIS — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.

Build and scale backend systems for Affirm’s credit platform using Python or Kotlin, AWS, MySQL, and Kubernetes to power payments, onboarding, and integrations.

analyticsawskotlinkubernetesmysql +1 skills

60% · 4/6 skills

Affirm

22 hours ago

Senior Backend Engineer - Scale & On-Call (Remote)

RemoteNorth AmericaSenior

Build and scale backend systems for a fintech company using Python/Kotlin, AWS, MySQL, and Kubernetes while owning quarterly goals and mentoring engineers.

analyticsawskotlinkubernetesmysql +1 skills

89% · 5/6 skills

Affirm

3 days ago

Senior Backend Engineer - Scalable Systems (Remote)

RemoteNorth AmericaSenior

Builds and scales backend systems for Affirm’s credit and checkout platform, collaborating with engineers and product teams to design reliable, extensible architectures.

Affirm

5 days ago

Senior Backend Engineer - Scalable Payments & APIs (Remote)

North AmericaSenior H-1B sponsor history USCIS — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.

Builds and scales backend APIs for Affirm’s buy-now-pay-later platform, focusing on payments integrations and merchant-facing services.

Affirm

last week

Senior Backend Engineer - Scalable Systems (Remote)

Senior Backend Engineer at Affirm building scalable systems for buy-now, pay-later services using Python/Kotlin, AWS, MySQL, and Kubernetes.

analyticsawskotlinkubernetesmysql +1 skills

83% · 5/6 skills

Affirm

last week

Senior Backend Engineer - Scalable Payments APIs (Remote)

Build and scale backend services for Affirm’s modern checkout and payment platform, designing APIs and distributed systems in a high-velocity engineering culture.