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Software Engineer II, Backend (Card)

Join Affirm as a Software Engineer II to develop backend systems for a seamless checkout experience with Card products.

Location
Spain
Compensation
€73k–€109k/yr
Level
mid
Type
contract · Remote

Posted by employer 1 day ago

First seen on Joblaze 4 hours ago

Last verified on the company career page 4 hours ago

Skills & Technologies

What you'll build

  • Develop complex software systems
  • Collaborate with product management and design
  • Create and monitor metrics
  • Engage in growth and development activities
  • Participate in on-call efforts

Must have

  • 2+ years of experience as a software engineer
  • Experience designing and developing backend systems
  • Proficient in Python or Kotlin
  • Familiar with distributed systems and AWS
  • Strong verbal and written communication skills

Practical constraints

  • On-Call Rotation

Requirements

Experience
2+ years
Visa
Sponsorship available

Benefits

Flexible Spending Wallets Learning & Development Programs Equity/Stock Options Health Insurance Parental Leave

Joblaze summary

In this role, the Software Engineer II on the Card Checkout team at Affirm focuses on developing and implementing backend systems to enhance the user checkout experience for Affirm's card products. Proficiency in Python or Kotlin, along with familiarity with distributed systems and technologies like AWS and MySQL, is essential. This position is suited for engineers with at least two years of experience who are comfortable collaborating across teams and navigating complex codebases. The team operates in a remote-first environment, emphasizing flexibility and community engagement.

Joblaze insights

  • Listed today — first seen on Joblaze October 18, 2026. Last confirmed on Affirm's careers page October 18, 2026.
  • This exact title is also open at 1 other location at Affirm: Poland.
  • Starts above 10% of 186 comparable mid backend roles we track (median $130,000 across 70 companies).

Quick facts

Is the Software Engineer II, Backend (Card) role remote?
Yes — Affirm lists this as a fully remote position.
What's the salary range?
Affirm lists €73,000–€109,000 for this role.
How much experience is required?
At least 2 years of relevant experience for this Software Engineer II, Backend (Card) role.
What's the tech stack?
Joblaze extracted these technologies from the posting: AWS, Kotlin, Kubernetes, MySQL, Python.
Does Affirm sponsor work visas for this role?
Yes — the posting indicates visa sponsorship is available for the right candidate.
What seniority level is this role?
Affirm targets mid-level candidates for this position.
Is this full-time or contract?
Contract for this Software Engineer II, Backend (Card) role at Affirm.

From the original posting

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.

The Card team is responsible for the Card products at Affirm. Our central focus is developing high quality, seamless, scalable and flexible platforms that enable users to get transparent, honest financing for their purchases anywhere with Affirm’s card products.

As a Software Engineer on the Card Checkout team, you will play a critical role in the development and implementation of complex software systems that allow for a seamless checkout experience for our users. We're looking for a highly motivated Software Engineer to join the Card engineering team within the Direct to Consumer organization. Our team focuses on the in-app experience of Affirm Card products. We are a full-stack team of backend and mobile engineers partnering closely with product, design, and analytics to build scalable systems and experiences that power our Card products.

What You'll Do

  • 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.
  • On-Call Rotation - There would be an on-call rotation for this role as a requirement.

What We Look For

  • 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 technologies like AWS, MySQL and Kubernetes.
  • You write high quality code that is easily understood and used by others.
  • You are comfortable navigating a large code base, debugging others' code, and providing feedback to other engineers through code reviews.
  • 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.
  • 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.

We are able to offer visa sponsorship for this role, but do require that someone is based in Spain for the role.

Compensation and Benefits

Base Pay Grade - L

Equity Grade - Spain 3

Employees new to Affirm typically come in at the start of the pay range. Affirm focuses on providing a simple and transparent pay structure which is based on a variety of factors, including location, experience and job-related skills.

Base pay is part of a total compensation package that may include monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by Affirm Holdings, Inc. (parent company).

POL base pay range per year: €73,000 - €109,000

Additional benefits include:

  • Type of employment: Contract of Employment
  • Flexible Spending Wallets for tech, food and lifestyle
  • Away Days - wellness days to take off work and recharge
  • Learning & Development programs
  • Parental benefits
  • Employee Resource & Community Groups

Location - Remote Spain

#LI-Remote

Remote-first with flexibility built in
Affirm is proud to be a remote-first company. Most roles can be done from almost anywhere within the country of employment. Some positions may occasionally require in-person work at an Affirm office, and a few are office-based due to the nature of the work. All new hires will be invited to attend an in-person onboarding experience.

By clicking "Submit Application," you acknowledge that you have read Affirm's Global Candidate Privacy Notice and consent to the use of your personal information as described.

Standard company text repeated across Affirm's postings is omitted here.

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