Senior Software Engineer, Fullstack (Consumer Payments)

Affirm, Inc.; London; Remote; GBP 117,000 - 157,000; Full time

Job summary

A fintech company is seeking a Senior Software Engineer to enhance its payments platform. You will work with teams across Europe and the US, contributing to payment processing innovations. Ideal candidates have over 4 years of software engineering experience and are proficient in both backend and frontend technologies. The role offers a competitive salary ranging from £117,000 to £157,000. Remote work is available within England.

Benefits

Medical coverage

Dental coverage

Vision coverage

Health stipends

Tech spending stipends

Equity rewards

Qualifications

• 4+ years of experience as a software engineer.
• Drive to innovate in consumer financial services.
• Fluency in backend and frontend development.

Responsibilities

• Partner with product managers to improve the payments platform.
• Collaborate with teams across the USA and Europe.

Skills

Software engineering

Backend development

Frontend development

Cross-team communication

Technical leadership

Job description

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Senior Software Engineer, Fullstack (Consumer Payments), London

Client: Affirm, Inc.

Location: London, United Kingdom

Job Category: Other

EU work permit required: Yes

Job Reference: 28d5032e2dce

Job Views: 32

Posted: 12.08.2025

Expiry Date: 26.09.2025

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.

As part of the Consumer Payments team at Affirm, you'll work on Affirm's Payment Processing Network, which processes billions of dollars in payments annually and is a vital component of Affirm's platform.

We seek highly motivated software engineers passionate about building high throughput, high availability systems that can scale with our growth.

You will collaborate with multiple partner teams across Europe and the US to support feature development, international expansion, and improve key financial metrics.

What you'll do

• Partner with product managers and stakeholders to improve and expand our payments platform
• Develop a deep understanding of payment networks and the payments industry
• Collaborate with partners and colleagues across the USA and Europe

What we look for

• 4+ Years of experience as a software engineer
• Drive to innovate in consumer financial services
• Fluency in backend and frontend development
• Strong cross-team communication and collaboration skills
• Nice to have: Knowledge of or willingness to work with Kotlin and Typescript, familiarity with payment processing principles, Open Banking standards, and experience in technical leadership roles

Base Pay Grade: N

Equity Grade: UK 5

Our compensation package includes base salary, stipends for health, wellness, tech spending, and benefits like medical, dental, and vision coverage. Equity rewards may also be available.

GBP base pay range per year: £117,000 - £157,000

Location: Remote England