Senior Backend Engineer, Payments

Job not on LinkedIn

🕒 September 18

🇺🇸 United States – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 18%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Hauler Hero

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2020

☁️ SaaS

🚗 Transport

🤝 B2B

SaaS • Transport • B2B

Hauler Hero is a cloud-based SaaS platform that helps waste-hauling companies optimize operations, increase efficiency, and reduce costs. The product bundles CRM, drag-and-drop dispatching and routing, billing, reporting, a mobile driver app, and customer-facing portals, plus developing AI features (Hero Vision, Hero Chat, Hero Routing) for automated pickup documentation, self-service support, and real-time route optimization. It’s designed for office staff, dispatchers, drivers, and managers to improve route productivity, cash collection, and customer experience.

📋 Description

• Design, build, and operate services behind card processing, refunds, and payment reconciliation • Own processor integrations through a common connector layer, including onboarding new processors and retiring old ones • Build safe payment pipelines with idempotent charge paths, processor timeouts and retries, webhook handling, and automated reconciliation • Build audit trails for payments and refunds • Respond to payment incidents, perform root cause analysis, and implement structural fixes • Partner with Customer Success on the payments support queue and turn recurring tickets into product fixes • Write clean, testable, high-performance Kotlin and Java code using Spring Boot • Design and implement scalable production APIs • Refactor and extend services to improve reliability and maintainability • Design and optimize PostgreSQL schemas and tune SQL for large data volumes • Participate in Agile/Scrum design reviews, code reviews, and architectural discussions • Collaborate with product, frontend, and Customer Success on billing and payments features • Mentor engineers through code reviews and share context to avoid knowledge silos

🎯 Requirements

• 5+ years building production backend systems • 2+ years building or operating payment systems in production, including card processing, recurring billing, refunds and reversals, or reconciliation • Direct experience integrating with at least one payment processor or gateway API • Experience designing and operating systems with distributed data and meaningful scale • Experience working in Agile/Scrum environments • Strong Git/GitHub workflow experience • Strong proficiency with Spring Boot (Java and/or Kotlin) • Willingness to write Kotlin as your primary language • Deep experience with relational databases, especially PostgreSQL • Experience building and maintaining production APIs • Working knowledge of idempotency, at-least-once vs. exactly-once processing, retries, and reconciliation patterns for money movement • Understanding of PCI DSS scope and tokenization • Experience with financial edge cases, including partial refunds, voids vs. reversals, chargebacks, declined and stuck transactions, and timezone-sensitive scheduling • Ability to translate product requirements into technical solutions • Strong problem-decomposition and debugging skills, including production incident work • Solid computer science fundamentals and engineering judgment • Clear written and verbal communication skills • AI-assisted development experience or willingness to use AI tools daily, including Claude, Claude Code, Cursor, and GitHub Copilot

🏖️ Benefits

• Competitive salary + equity • Health, dental, vision insurance • Flexible PTO • Remote-first culture • Modern development tools and AI assistants