Staff Software Engineer, Mobile (App Infrastructure)

Affirm; United States; Remote; USD 129,000 - 172,000; Full time

Benefits offered by this job

Health care coverage

Flexible Spending Wallets

Time off

Employee stock purchase plan (ESPP)

Job summary

Affirm, Inc. is seeking a senior mobile engineering leader to set technical strategy for a year-long horizon and align with product, design, and analytics to deliver scalable mobile platforms. You’ll drive architecture decisions, champion quality, and establish processes that scale across teams.

You will mentor engineers, lead by example, and influence major features and platform components. This is a remote Canada role with strong cross‑functional collaboration and global teamwork.

Qualifications

• 7+ years of experience developing and architecting mobile apps.
• 4+ years of hands-on React Native.
• Proficiency in JavaScript/TypeScript.
• Experience with React Native SDK updates and native module work.
• Familiarity with mobile observability tools and E2E testing.
• Strong communication and cross-functional collaboration.
• Bachelor’s degree or equivalent practical experience.

Responsibilities

• Set technical strategy for your team on a year-long horizon and align with business-critical projects.
• Collaborate across product, design & analytics to ensure sustainability and informed trade-offs.
• Act as a force-multiplier by defining technical solutions and operational processes.
• Own team operations and availability with monitoring, playbooks, testing, and on-call readiness.
• Foster quality and ownership by defining coding standards and sharing them broadly.
• Develop talent through feedback, guidance, and leading by example.

Skills

Mobile app development

React Native

JavaScript/TypeScript

Expo

Native modules

Education

Bachelor's degree or equivalent experience

Tools

Redux Toolkit

Sentry/Crashlytics

Maestro/Appium

LaunchDarkly/Statsig

Claude Code

Job description

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.

App Infrastructure is the team behind affirm’s shared mobile app infrastructure — the platform every other mobile feature team builds on. We own the app’s shared components: design system, networking, observability, experimentation, CI/CD, app releases, developer tooling, availability/stability, and more.

We care about ownership: shipping tools and runbooks other teams actually adopt, writing specs before building, and being the go to experts for the mobile tech stack . We’re small, technical, and highly collaborative.

What You’ll Do

• You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects.
• You will collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed.
• You will act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes.
• You take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, policies, testing and alerting in place to support “keep the lights on” & on-call efforts.
• You will foster a culture of quality and ownership on your team by setting 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 7+ years of experience of developing and architecting mobile applications; 4+ using React Native
• You are proficient in working with Javascript/Typescript.
• You have hands‑on experience with React Native and Expo, and have authored or migrated native modules and components.
• You have experience with complex state management in a React app. Proficiency with Redux Toolkit is bonus
• You have performed React Native SDK major updates, and you can debug across the JSnative boundary under the New Architecture.
• You stay up-to-date on native OS releases and can anticipate how they land in a React Native app
• You have experience with mobile testing and observability tooling — E2E frameworks like Maestro/Appium, crash reporting Sentry/Crashlytics, and experimentation/feature‑flagging platforms like Statsig/LaunchDarkly — and enjoy building tooling other teams actually adopt.
• You are proficient and up to date on AI‑assisted development — Claude Code or comparable agentic tooling — and apply judgment about where agents help, where they need guardrails, and how to keep the quality bar high.
• You have a proven track record of driving a team to execute large projects
• You have experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan. You write high quality code that is easily understood and used by others.
• You thrive in ambiguity, and are comfortable moving from low level language idioms all the way to the architecture of large systems to understand how they work.
• Your growth and impact trajectory demonstrates that you have mastered gathering and iterating on feedback from your engineering and cross‑functional peers.
• You have strong verbal and written communication skills that support effective collaboration with our global engineering team.
• This position requires either equivalent practical experience or a Bachelor’s degree in a related field.

Base Pay Grade

- P

Equity Grade

- 7

Employees 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 monthly stipends for health, wellness and tech spending, and benefits (including 100% subsidized medical coverage, dental and vision for you and your dependents). In addition, the employees may be eligible for equity rewards offered by affirm holdings, inc. (parent company).

CAN base pay range per year:

CAD $181,000 - $241,000

Location - Remote Canada

This remote role is open only to candidates residing in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island, or Saskatchewan.

Affirm is proud to be a remote‑first company! The majority of our roles are remote and you can work almost anywhere within the country of employment. affirmers in proximal roles have the flexibility to work remotely, but will occasionally be required to work out of their assigned affirm office. A limited number of roles remain office‑based due to the nature of their job responsibilities.

We’re extremely proud to offer competitive benefits that are anchored to our core value of people come first. Some key highlights of our benefits package include:

• Health care coverage - affirm covers all premiums for all levels of coverage for you and your dependents
• Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
• Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
• ESPP - An employee stock purchase plan enabling you to buy shares of affirm at a discount

We believe It’s On Us to provide an inclusive interview experience for all, including people with disabilities. We are happy to provide reasonable accommodations to candidates in need of individualized support during the hiring process.

[For U.S. positions that could be performed in Los Angeles or San Francisco] Pursuant to the San Francisco Fair Chance Ordinance and Los Angeles Fair Chance Initiative for Hiring Ordinance, affirm will consider for employment qualified applicants with arrest and conviction records.