Software Engineer – Payments

Location - Mountain View, CA (Onsite)

Hybrid Available for Candidates Living in San Francisco or with 1+ Hour Commute

Compensation - $160,000 – $225,000 Base + Competitive Equity

Visa - H1B Transfers Welcome - Visa Sponsorship Available

Company Stage - Seed Stage (~$25M Raised)

Industry - AI, Payments Infrastructure, Billing Systems, FinTech, Enterprise Software

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About the Company

The company is building an AI-native platform that helps businesses automate and optimize complex revenue-generating workflows through intelligent software agents.

Its platform leverages modern AI systems, large language models, and enterprise-grade automation to deliver measurable business outcomes while managing millions of dollars in customer transactions and operational workflows.

Backed by leading venture investors and founded by experienced technology leaders, the company has already achieved strong product-market fit and is rapidly scaling both its engineering organization and product platform. As customer adoption accelerates, the company is investing heavily in building world-class payments and billing infrastructure to support its next phase of growth.

As a Software Engineer – Payments, you'll become the foundational engineer responsible for designing and building the company's next-generation payments, billing, and pricing platform while working directly with engineering leadership on mission-critical financial infrastructure.

This is a rare opportunity to join a fast-growing AI startup where you'll own core financial systems, influence platform architecture, and build infrastructure supporting the company's long-term revenue engine.

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What You'll Do

• Architect and build the company's core payments and billing platform
• Design scalable pricing engines supporting SaaS, usage-based, and hybrid pricing models
• Build production-grade integrations with Stripe, Shopify, and payment providers
• Design reliable event-driven backend systems supporting payment processing
• Build usage metering pipelines tied to production product events
• Design reconciliation systems ensuring billing accuracy and financial transparency
• Build internal ledger, audit, and billing validation infrastructure
• Design APIs and backend services powering payment workflows
• Partner closely with Finance, Product, and Operations teams to improve billing processes
• Build scalable backend infrastructure supporting subscriptions, invoices, refunds, disputes, and payment lifecycle management
• Own payment platform initiatives from architecture through production deployment
• Improve reliability, scalability, and operational excellence across financial systems

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Ideal Candidate Background

Experience Requirements

• 3–6+ years of backend software engineering experience
• At least 2–3 years building production payments, billing, or pricing systems
• Experience owning payment infrastructure end-to-end
• Experience building customer-facing financial systems used in production
• Experience working at high-growth startups or technically sophisticated software companies
• Experience designing scalable backend systems supporting financial workflows
• Demonstrated ownership of production billing platforms
• Startup experience strongly preferred
• Business-minded engineering approach with strong product ownership

Technical Requirements

• Strong backend engineering fundamentals
• Hands-on experience integrating Stripe APIs in production
• Experience working with Shopify APIs or similar commerce platforms
• Strong SQL and relational database experience
• Experience building event-driven backend systems
• Strong understanding of idempotency, retries, and distributed event processing
• Experience building usage-based, subscription, or token-based billing systems
• Experience designing payment APIs and backend platform services
• Strong debugging and production systems troubleshooting skills
• Experience with Python, TypeScript, Django, or similar backend technologies preferred

Education

• Bachelor's degree in Computer Science, Software Engineering, or related technical field preferred
• Strong academic background from a Top-30 Computer Science program preferred
• Academic pedigree becomes less important for candidates with 5+ years of exceptional industry experience

Soft Skills

• Strong product mindset
• High ownership mentality
• Excellent communication skills
• Strong cross-functional collaboration
• Comfortable operating in ambiguity
• Self-directed and proactive
• Bias toward execution
• Startup mentality
• Strong business and engineering judgment

Preferred Backgrounds

• Stripe
• Shopify
• Payments infrastructure companies
• Billing platform teams
• FinTech startups
• Enterprise SaaS companies
• AI-native software companies
• Early-stage venture-backed startups
• Revenue infrastructure teams
• Engineers building production financial systems

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Compensation & Benefits

• Base Salary: $160,000 – $225,000
• Competitive Equity Package
• Direct collaboration with engineering leadership
• Significant ownership over payments architecture
• Opportunity to build foundational revenue infrastructure
• High-impact engineering role
• Exposure to AI-powered enterprise products
• Rapid career growth opportunities
• Onsite collaboration with a high-performing engineering team
• Visa Sponsorship Available (H1B Transfers Welcome)

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Why Join

This is an opportunity to build the payments infrastructure powering one of the fastest-growing AI software platforms.

You'll architect billing systems, payment infrastructure, pricing engines, and financial workflows while working closely with engineering, finance, and product teams to build production systems supporting rapid business growth.

As the foundational payments engineer, you'll have outsized ownership over one of the company's most critical technical domains while building scalable financial infrastructure that directly powers company revenue.