Join Affirm as a Senior Software Engineer to build and scale financial products for international markets with a remote-first team.
Posted by employer 1 month ago
First seen on Joblaze 1 month ago
Last verified on the company career page 1 hour ago
AI in the day-to-day
You'll constantly look for ways to get AI to increase productivity on a daily basis.
Requirements
- Experience
- 4+ years
Not disclosed in this posting: visa sponsorship.
Benefits
Joblaze summary
In this role, the Senior Software Engineer will lead a full-stack team in developing and delivering impactful financial products for international markets, focusing on agile methodologies and rapid deployment. Proficiency in backend technologies like Python and AWS, along with experience in frontend frameworks such as React, is essential for success. This position is ideal for seasoned engineers with a strong sense of ownership and a collaborative mindset, ready to tackle complex challenges in a fast-paced environment. The team operates with a culture of quality and innovation, emphasizing continuous learning and improvement.
Joblaze insights
- Listed about a month ago — first seen on Joblaze August 14, 2026. Last confirmed on Affirm's careers page October 10, 2026.
- Starts above 41% of 180 comparable senior fullstack roles we track (median $165,000 across 81 companies).
Quick facts
- Is the Senior Software Engineer, Fullstack (International) role remote?
- Yes — Affirm lists this as a fully remote position.
- What's the salary range?
- Affirm lists £120,000–£168,000 for this role.
- How much experience is required?
- At least 4 years of relevant experience for this Senior Software Engineer, Fullstack (International) role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: AWS, Kotlin, Kubernetes, MySQL, Python, React.
- What seniority level is this role?
- Affirm targets senior candidates for this position.
- Is this full-time or contract?
- Full-time for this Senior Software Engineer, Fullstack (International) 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 International Accelerator Engineering team is growing, and we're looking for a Senior 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:
· 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 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 foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks.
· You will help develop talent on your team by providing feedback and guidance, and leading by example.
What We Look For:
· You have a total of 4+ years of experience as a software engineer.
· You are experienced in designing, developing and launching backend systems at scale technologies like Python, Kotlin, AWS, MySQL, and Kubernetes.
· You have experience shipping web apps using declarative UI frameworks like React or Vue.
- You efficiently use AI to assist you to deliver high quality products on a daily basis
· You have experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design. You write high quality code that is easily understood and used by others.
· You are proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely.
· 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 & Benefits
Base Pay Grade - N
Equity Grade - 5
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: £120,000 - £168,000
Location: UK Remote
#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.