Software Engineer II, Backend – Merchant Data Platform EU

Affirm

Software Engineer II developing backend solutions for Affirm's Merchant Data Platform. Responsible for merchant data and identity across all merchant touchpoints with strict availability and latency SLAs.

Posted 4/27/2026contractRemote • 🇵🇱 PolandJuniorMid-Level💰 PLN 252,000 - PLN 352,000 per yearWebsite

Tech Stack

Tools & technologies

AWSDistributed SystemsKotlinKubernetesMySQLPython

About the role

Key responsibilities & impact

With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.
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 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.

Requirements

What you’ll need

You have a total of 2+ years of experience as a software engineer.
You have experience designing, developing and launching backend systems and are proficient in one of Python or Kotlin.
You are familiar with the building blocks of distributed systems, and the technologies like AWS, MySQL and Kubernetes.
You have mastered taking a simple problem or business scenario into a solution that interacts with multiple software components, and executing on it by writing clear, easily understood, well tested and extensible code.
You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews.
Your experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders.
You have strong verbal and written communication skills that support effective collaboration with our global engineering team.

Benefits

Comp & perks

100% subsidized medical coverage, dental and vision for you and your dependents
Flexible Spending Wallets for tech, food and lifestyle
Away Days - wellness days to take off work and recharge
Learning & Development programs
Parental leave
Employee Resource & Community Groups
Competitive vacation and holiday schedules allowing you to take time off to rest and recharge
Employee stock purchase plan enabling you to buy shares of Affirm at a discount
Creative tax benefits, subject to applicable law and company policy

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonKotlinbackend systemsdistributed systemsdebuggingcode reviewswell tested codeextensible codemetrics monitoringproduct development lifecycle

Soft Skills

collaborationcommunicationownershipfeedback seekingcommunity engagementproblem solvingtechnical articulationrisk assessmenttrade-off analysisgrowth and development