Senior Software Engineer – Comms Core

This is a fully remote position, open to applicants in Poland.

📋 Description

• Take ownership and achieve quarterly technical objectives for the Communications sector.

• Tackle ambiguous and open-ended challenges within the messaging infrastructure.

• Design and enhance dependable backend services for high-volume communication across multi-region, multi-tenant settings.

• Develop systems for orchestration, delivery, preferences, templates, and observability.

• Collaborate with product management, design, analytics, security, and engineering teams throughout the product lifecycle.

• Clearly articulate technical constraints while balancing customer impact, risks, and trade-offs.

• Design, implement, and maintain robust integrations with external messaging vendors.

• Identify and address issues affecting scalability, developer experience, and operational resilience.

• Establish service-level objectives and metrics.

• Enhance alerting and incident response processes.

• Engage in on-call duties.

• Elevate design, testing, code review, rollout, and operational standards.

• Champion engineering standards through writing and tech talks.

• Offer feedback, mentorship, and technical guidance to team members.

• Lead by example.

⛳️ Requirements

• Over 5 years of experience in software development or engineering.

• Profound understanding of system design and architecture.

• Expertise in modern programming languages such as Python, Kotlin, or similar.

• Proven experience in developing highly available distributed systems using AWS, MySQL, DynamoDB, and Kubernetes.

• Experience in designing multi-region, multi-tenant platforms with strong isolation, scalability, failure recovery, and data-consistency guarantees.

• Familiarity with integrating third-party communications or messaging vendors.

• Background in designing abstractions for various capabilities, rate limits, and failure modes.

• Experience in defining technical plans for major features or system components.

• Ability to produce high-quality, understandable, and reusable code.

• Competence in making substantial changes in a large codebase safely.

• Proficiency with AI-assisted development tools and sound judgment in validating their outputs.

• Strong verbal and written communication abilities.

• Participation in an on-call rotation is mandatory.

🏝️ Benefits

• Equity rewards from Affirm Holdings, Inc.

• Monthly stipends for health, wellness, and technology spending.

• 100% subsidized medical coverage for employees and their dependents.

• Dental and vision coverage for employees and their dependents.

• Flexible spending wallets for technology and wellbeing needs, reimbursable up to 1390 zł per month.

• Competitive paid time off.

• Paid public holidays.

• Additional paid Away Days.

• Comprehensive private healthcare through Lux Med's Platinum package.

• MultiSport card.

• Learning and development programs.

• Family healthcare support through Maven.

• Parental leave assistance through Parentaly.

• Mental well-being support through Lyra, including up to 12 confidential counseling or coaching sessions annually for employees and household members.

• Financial well-being support through Northstar, offering unlimited access to Certified Financial Advisors and planning tools at no cost.

• Employee Resource Groups (ERGs).

• Eligibility for creative tax benefits, subject to applicable law, role, and company policy.

• Employee stock purchase plan (ESPP) enabling employees to purchase Affirm stock at a discount.

• Inclusive interview process with accommodations for candidates with disabilities.