Senior Full-Stack & Integration Engineer

About the role
Youll be our first in-house engineer. You’ll build and run the apps behind our security, traffic management, cleaning and services operations, and connect our business systems. You’ll use modern AI coding tools (Claude Code, Cursor, GitHub Copilot or similar) every day to deliver faster, and you’ll own the quality, security and reliability of what ships.

What you’ll do

• Design, build and maintain web and mobile apps for rostering, timesheets, shift check-in/out (GPS/geofencing), site/job management and service requests.
• Build alerting features: panic/duress alerts, lone-worker monitoring, incident reporting, escalation notifications (SMS, push, email). Integrate with alarm monitoring platforms or IoT devices where needed.
• Integrate our business systems: finance/accounting, HR, payroll, procurement and CRM. Use APIs, webhooks and automation platforms to remove double entry.
• Deploy and run applications both in the cloud (Azure/AWS) and on our in-house servers. Handle backups, monitoring, patching and uptime.
• Automate workflows across the business with tools such as Power Automate, n8n, Make or Zapier, or with custom scripts.
• Use AI tools responsibly: review, test and secure all AI-generated code; keep sensitive company and employee data out of public tools.
• Document systems, keep source code and credentials in company-owned accounts, and advise management on buy-vs-build decisions.

Must have

• 5+ years of professional software development, including shipping and supporting production systems on your own.
• Strong in one modern stack, e.g. TypeScript/Node.js + React or C#/.NET, with SQL databases (PostgreSQL or SQL Server).
• Mobile development (React Native or Flutter), or a clear ability to deliver it.
• Proven experience integrating third-party systems via REST APIs, webhooks and OAuth.
• Cloud deployment (Azure or AWS), Docker, CI/CD (e.g. GitHub Actions), plus Linux and/or Windows Server administration.
• Daily, hands-on use of AI coding assistants, with examples of how you check and test their output.
• Security fundamentals: authentication, role-based access, encryption, handling of personal and payroll data.
• Able to work directly with operations staff and turn messy requirements into working software.

Nice to have

• Workforce management, rostering, field service or security-industry software experience.
• Knowledge of award interpretation and payroll rules (e.g. Security Services and Cleaning Services awards).
• Experience with Xero/MYOB, Employment Hero/KeyPay, Salesforce/HubSpot/Dynamics or similar.
• IoT/alarm integrations (MQTT, SIP/SMS gateways, monitoring-centre protocols).
• Networking basics (VPN, firewalls, Microsoft 365/Entra ID administration).