Software Engineer II, Fullstack (International)

Praxy; United Kingdom; Remote; GBP 101,000 - 149,000; Full time

Benefits offered by this job

Health coverage

Tech stipends

Flexible time off

Employee stock purchase plan (ESPP)

Job summary

Affirm’s International Accelerator Engineering team is hiring a Software Engineer to join our remote-first UK squad. We value 1.5+ years of software experience, building web apps with React or Vue and APIs with Python or Kotlin in a scalable, multi-market environment.

You’ll break down large projects into deliverable tasks, collaborate with product, design and analytics, monitor reliability, and participate in the interview process as you grow with the team.

Qualifications

• 1.5+ years of software engineering experience.
• Experience shipping web apps with React or Vue.
• Experience designing, developing and launching APIs at scale with Python or Kotlin.
• Ability to navigate a large codebase and contribute through well-tested, extensible code.
• Strong communication and collaboration across global teams.

Responsibilities

• Break down large projects into tasks and deliver in phases with timely delivery.
• Collaborate with product management, design & analytics to surface constraints and trade-offs.
• Create and monitor metrics, support on-call duties and keep services running smoothly.
• Contribute to team growth through participation in interview processes.

Skills

React

Vue

APIs

Python

Kotlin

Code reviews

Ownership

Job description

# Software Engineer II, Fullstack (International): Remote UK: Aug 13, 2026: Oct 4, 2026## About the roleAt 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 International Accelerator Engineering team is growing, and we're looking for a Software Engineer to join us! We're a full-stack team located entirely in Europe within the same time zone, but culturally rooted in Silicon Valley. We directly improve the financial lives of over 20 million people shaping how Affirm builds Direct-to-Consumer products for Canada, the UK, and future international markets. We build and own various products used by our consumers, like the Affirm App and other Direct to Consumer products across international markets. We are here to make sure we reach and provide useful tools to our users so they can experience honest financial products at their fullest.Our work is agile and fast-paced, shipping new code to production for millions to use across geographies and rigorously measuring the impact it has on them. This role rewards curiosity, ownership, ability to zoom in and out, switch contexts often, also in an open contribution model, and a builder's mindset. You'll know exactly what your objectives are, you'll have what you need to hit them, and you'll choose your own path to get there, while constantly looking for ways to get AI to increase productivity on a daily basis. You'll learn quickly from experienced teammates and grow your craft on problems that matter at scale.If you want to build something new and operate it at scale – come join us!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.What We Look For:· You have a total of 1.5+ years of experience as a software engineer.· You have experience shipping web apps using declarative UI frameworks like React or Vue.· You have experience designing, developing and launching APIs at scale using languages like Python or Kotlin.· 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.Compensation & BenefitsBase Pay Grade - LEquity Grade - 4Employees 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 equity rewards, monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidised medical coverage, dental and vision for you and your dependents.)Base pay range per year: £101,000 - £149,000Location: UK Remote#LI-RemoteRemote-first with flexibility built inAffirm 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.Benefits designed for youOur benefits reflect our commitment to care, transparency, and flexibility. Here are a few highlights:* Health coverage at no cost: We cover 100% of premiums for employees and their dependents.* Spending stipends: Monthly stipends support your tech setup, and the ability to choose health and wellness options that are right for you.* Time off to recharge: Flexible time off and generous holiday calendars help you rest when you need to.* Own a piece of what you build: Our employee stock purchase plan (ESPP) lets you buy Affirm stock at a discount.We’re committed to providing an inclusive interview process, including accommodations for candidates with disabilities. If you need support, we’re happy to help.For positions based in San Francisco or Los Angeles: Affirm considers qualified applicants with arrest and conviction records, as required by law.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.## PayBase pay range per year: £101,000 - £149,000