Senior Software Engineer, Backend (Platform Reliability)

Affirm; España; A distancia; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A leading financial technology company is seeking a Senior Software Engineer in Spain to enhance the reliability and efficiency of their distributed systems. The role involves leading a team, collaborating on product strategies, and automating operational tasks. Ideal candidates have extensive software engineering experience, especially in Python and Kubernetes, and a commitment to quality in a fast-paced environment.

Servicios

Health coverage

Equity rewards

Flexible spending wallets

Wellness days

Formación

• 5+ years of experience as a software engineer.
• Experience launching backend systems at scale.
• Strong communication skills for collaboration.

Responsabilidades

• Own and deliver quarterly goals for the team.
• Collaborate with product management and design.
• Automate operational tasks to reduce manual intervention.

Conocimientos

Software engineering experience

Kubernetes expertise

Backend systems design

Python

Kotlin

AWS

MySQL

High availability strategies

Declarative UI frameworks

Incident response strategies

Descripción del empleo

Overview

Remote Spain

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We are seeking a Senior Software Engineer to join our Infrastructure Platform Engineering team, ensuring the reliability, availability, and operational efficiency of Affirm’s distributed systems. This role is ideal for engineers who thrive in highly scalable, cloud-native environments, focusing on incident response, observability, automation, and system resilience.

As part of the Platform, Reliability and Infrastructure Operations group, you will work on proactive failure mitigation, operational tooling, service scaling strategies, and on-call effectiveness to ensure low-latency, highly available services across Affirm's compute, storage, CI/CD, and observability stacks. Platform Reliability Engineering helps our Engineering partners to "Operate What They Own" with excellence to protect customer experience by defining frameworks and best practices for operating applications, building tooling, and providing training and consulting services. Affirm is scaling fast and this role will help ensure our platform’s resilience as we operate across multiple regions.

What You’ll Do

• Own and deliver quarterly goals for your team, lead engineers through ambiguity to solve open-ended problems, and support delivery.
• Collaborate with product management, design, and analytics, participating in ideation, articulating technical constraints, and partnering on decisions that consider risks and trade-offs.
• Proactively identify project, process, technology or business issues, advocate for them, and lead in solving them.
• Support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting on-call efforts.
• Foster a culture of quality and ownership by setting or improving code review and design standards, and advocating for them beyond your team through writing and tech talks.
• Help develop talent on your team by providing feedback and guidance, and leading by example.
• Participate in an on-call rotation as a requirement.

What We Look For

• 5+ years of experience as a software engineer.
• Experience designing, developing, and launching backend systems at scale using technologies like Python, Kotlin, AWS, MySQL.
• Kubernetes expertise for cloud compute orchestration and troubleshooting.
• Comprehensive traffic management for scalable, reliable, high-performance platform operations (especially in AWS).
• Experience shipping web apps using declarative UI frameworks like React or Vue.
• Ability to ensure high availability and resilience of critical services through runbooks, incident response strategies, and post-mortem analysis.
• Partner with Observability and Reliability teams to proactively detect and mitigate outages; define technical plans for delivering significant features with elegant, simple, extensible design.
• Automate operational tasks, deployments, failover processes, and scaling strategies to reduce manual intervention; capable of making significant changes in large codebases safely.
• Collaborate with Storage & Replication, Cloud, CI/CD, and Security teams to meet high operational standards; demonstrate ownership of growth and seek feedback.
• Strong verbal and written communication skills for effective collaboration with a global engineering team.

Compensation and Benefits

• Base Pay Grade - N
• Equity Grade - 4
• Base pay is part of a total package including health coverage, stipends for health, wellness, tech, and benefits; eligible for equity rewards.
• Benefits include flexible spending wallets, wellness days, and employee resource & community groups.
• Location: Remote Spain. Visa sponsorship is available, but the role requires based in Spain.

Location and Additional Information

Affirm is remote-first; most roles are remote within the country of employment. Some roles may require office presence depending on responsibilities. Additional highlights include comprehensive health coverage for you and dependents, ESPP, and time off.

Affirm is committed to an inclusive interview process and provides reasonable accommodations on request. For U.S. positions, qualified applicants with arrest or conviction records may be considered in accordance with applicable laws. By applying, you acknowledge receipt of Affirm's Global Candidate Privacy Notice.

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