Staff Software Engineer, Backend (Identity International) (Python/Kotlin, AWS): Building and evolving highly available identity, KYC verification, and decisioning systems for international markets with an accent on distributed systems, regulatory complexity, and global architectural changes. Focus on setting long-term technical strategy, designing scalable backend components, and improving operational reliability, monitoring, testing, and on-call readiness.
Location: Remote UK
Base pay: £142,000–£190,000 per year
Company
Affirm is a fintech company developing transparent buy-now-pay-later services without hidden fees or compounding interest.
What you will do
Set the team’s technical strategy on a year-long horizon and connect it to business-impacting projects.
Collaborate with product management, design, and analytics throughout the product development lifecycle.
Define and advocate for technical solutions and operational processes that multiply team effectiveness.
Own service operations and availability, including monitoring, triage rotations, playbooks, policies, testing, alerting, and on-call support.
Establish code review and design standards, and promote quality through technical writing and talks.
Develop engineering talent through feedback, guidance, and leadership by example.
Requirements
8+ years of experience designing, developing, and launching backend systems at scale using Python or Kotlin.
Extensive experience building highly available distributed systems with AWS, MySQL, Spark, and Kubernetes.
Experience planning and delivering major features or system components, including deprecating existing functionality.
Ability to work from low-level language idioms through large-scale system architecture and operate effectively in ambiguity.
Strong track record of incorporating feedback from engineering and cross-functional peers.
Strong verbal and written communication skills for collaboration with a global engineering team.
Culture & Benefits
Remote-first work model, with remote work available within the country of employment.
Health care coverage with premiums fully subsidized for employees and dependents.
Flexible spending stipends for technology, food, lifestyle, and family-forming expenses.
Competitive vacation and holiday schedules.
Employee stock purchase plan with discounted shares.
Reasonable accommodations available during the interview process.
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