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# Senior Software Engineer, Payroll Engine in United

- **Company:** Energy Jobline
- **Location:** United, WV, United States (Remote available)
- **Experience:** Expert
- **Salary:** $100,000.0 - $105,000.0
- **Contract:** Permanent contract
- **Skills:** Django Web Framework, Github, Python (Programming Language), PostgreSQL, State Machines, AI Coding Agents, Backend, Docker
- **Published:** October 31, 2026
- **Apply:** https://www.energyjobline.com/job/senior-software-engineer-payroll-engine-united-32120023

## About the Role

* 5+ years building transactional backend systems in Python; Django and PostgreSQL in production.

## Description

* Has shipped a system where money is the output: payroll, billing, banking, insurance claims, accounting. You can explain how you kept a ledger correct under concurrency and corrections.

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 * Fluent in integer-cents arithmetic, rounding rules, and the difference between a correction and a reversal.

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 * Designs state machines and event-sourced or append-only data models; knows why committed records are never edited.

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 * PostgreSQL depth: migrations against live data, constraints, transactions, advisory locks or equivalent.

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 * Writes tests as part of the change; has built or maintained a replay or golden-file regression suite.

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 * Has worked with AI coding agents on real deliverables: writes specs an agent can execute and reviews agent output critically.

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 * Comfortable in a monorepo with CI, Docker Compose and GitHub Actions.