Senior Backend Engineer, Payments

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🕒 Setembro 18

🇺🇸 Estados Unidos – Remoto (EUA)

⏰ Tempo Integral

🟠 Sênior

🔙 Engenheiro Backend

👻 Score fantasma 18%

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🗣️🇺🇸🇬🇧 Inglês obrigatório

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Hauler Hero

11 - 50 funcionários

Fundada em 2020

☁️ SaaS

🚗 Transporte

🤝 B2B

SaaS • Transport • B2B

Hauler Hero é uma plataforma SaaS baseada em nuvem que ajuda empresas de transporte de resíduos a otimizar operações, aumentar a eficiência e reduzir custos. O produto inclui CRM, despacho e roteamento com recurso de arrastar e soltar, faturamento, relatórios, aplicativo móvel para motoristas e portais voltados para o cliente, além do desenvolvimento de recursos de inteligência artificial (Hero Vision, Hero Chat, Hero Routing) para documentação automatizada de coleta, suporte de autoatendimento e otimização de rotas em tempo real. É projetado para funcionários de escritório, despachantes, motoristas e gerentes melhorarem a produtividade das rotas, a arrecadação de pagamentos e a experiência do cliente.

Descrição

• 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

🎯 Requisitos

• 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

🏖️ Benefícios

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

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