About Hauler Hero

Hauler Hero is a modern, multi-tenant SaaS platform built for the waste management industry. We help haulers run smarter operations, from dispatch and routing to driver workflows, billing, and customer payments.

Hauling companies across North America run on Hauler Hero every day. Our customers bill and collect payments through the platform, so reliability and accuracy matter in everything we build.

Role Summary

We are hiring a Senior Backend Engineer to join our payments team. You will share ownership of the platform that moves our customers' money, including card processing, refunds, reconciliation, and the processor integrations behind them.

This is a 100% hands-on senior IC role. You will design and ship the systems that make payments safe by construction, while refactoring and extending what exists as the platform scales.

The role requires strong technical judgment, comfort with ambiguity, and clear communication in a remote environment.

AI-First Backend Engineering

We are intentionally building an AI-assisted engineering organization. AI tools are part of the daily workflow, not optional.

What this means in practice

Daily use of tools such as Claude, Claude Code, Cursor, and GitHub Copilot

AI-assisted implementation of Spring Boot services, APIs, database migrations, and business logic

AI-assisted test generation, refactoring suggestions, and code review support

AI-assisted log analysis, debugging, and issue investigation

You remain accountable for reviewing, validating, and owning everything AI produces. In payments, that bar is higher than anywhere else in the codebase. Speed matters, but a subtle bug moves real money, so correctness matters more.

This role is not a fit for engineers who are resistant to AI-assisted development or who rely on AI output without understanding the underlying system.

Key Responsibilities

Payments Platform

Design, build, and operate the services behind card processing, refunds, and payment reconciliation

Own our processor integrations behind a common connector layer, including onboarding new processors and retiring old ones

Make the payment pipeline safe by construction through idempotent charge paths, processor timeouts and retries outside database transactions, webhook handling, and an automated reconciler that catches stuck or mismatched payments

Build audit trails so every payment and refund is traceable

Be a first responder for payments incidents and drive root cause analysis and structural fixes, not one-off scripts

Partner with Customer Success on the payments support queue and turn recurring tickets into product fixes

Core Backend Development

Write clean, testable, high-performance code in Kotlin and Java using Spring Boot; new backend code is written in Kotlin

Design and implement APIs that scale with real production workloads

Refactor and extend existing services to improve reliability and maintainability

Data & Performance

Design and optimize relational schemas in PostgreSQL

Write and tune performant SQL for large data volumes and validate that access patterns scale under load

Collaboration & Delivery

Work as part of a cross-functional Agile/Scrum team and participate in 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 proactively share context to avoid knowledge silos

Required Qualifications

Experience

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, with strong Git/GitHub workflow experience

Core Technologies

Strong proficiency with Spring Boot (Java and/or Kotlin) and willingness to write Kotlin as your primary language