KeyStep

Senior Software Engineer, Backend (Merchant Data Platform EU)

Affirm
Remote Poland
about 3 hours ago
full-timeremote

Skills & Technologies

BackendProduct ManagementMakeOnboardingRisk Analysis

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.

The Merchant Data Platform is a backend, foundational service at Affirm. We are responsible for merchant data and identity across all merchant touchpoints. Our checkout-critical platform serves millions of requests per day, supports the onboarding of merchants across all onboarding touchpoints, and maintains strict availability and latency SLAs given the criticality of the service. Further, the team maintains sophisticated pipelines that enrich our datasets for the purposes of merchant identification, risk analysis, and fraud detection.

We’re looking for a Senior Software Engineer to join our fully remote team based in Europe.

What You'll Do

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 drive detailed project definition, design, cross-functional alignment, estimation, in addition to task break-down, delivery, monitoring, and maintenance.

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 contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

You will mentor engineers on the t

Company & Role Analysis

JobSeeker+
Likely perks
Private MedicalPension25+ Days HolidayStock OptionsLearning BudgetFlexible Hours
Culture & working style

Neutral 2–4 sentence summary of what working at this company is like, drawn from public reviews and press coverage. Tone, collaboration style, pace, benefits highlights.

Market salary range

£45,000 – £60,000 (Glassdoor, Levels.fyi, 2025)

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