Full Stack Software Engineer

About Acacia
Acacia Green Technologies develops and delivers connected technology for hotels and other complex buildings. Our work brings together hospitality television and guest experience platforms, IoT sensors, energy and environmental monitoring, building controls, systems integration and data-led services. We operate in a practical, fast-moving environment where software must work reliably with real properties, devices, partners and customer operations.
The role
We are looking for a full stack engineer whose main strength is backend development. You will take primary responsibility for Node.js and JavaScript services, PostgreSQL data models, REST APIs and a growing microservices estate, while contributing to React.js interfaces when a feature requires end-to-end ownership. The role sits close to live hotel deployments, IoT devices and the people who use our products.
Role mission Build maintainable, secure and observable software that turns device data and operational requirements into dependable hospitality products.
Key responsibilities
* Design, build and maintain backend services using Node.js and JavaScript (TypeScript is a plus), with clear boundaries, robust error handling and production-ready documentation.
* Own PostgreSQL schema design, SQL queries, migrations, data integrity and performance for operational and time-sensitive product workloads.
* Develop well-structured REST APIs and event-driven integrations between Acacia applications, hotel systems, sensors, gateways and third-party platforms.
* Evolve our microservices architecture pragmatically, balancing service independence with operational simplicity and reliable data flows.
* Integrate IoT devices and building systems using MQTT, Modbus or Modbus TCP, HTTPS, JSON and vendor APIs; diagnose failures across software, network and device boundaries.
* Contribute to React.js frontends using JavaScript or TypeScript, HTML, CSS and appropriate state management when delivering complete product features.
* Containerise and deploy services using Docker, Kubernetes and Helm; support CI/CD pipelines, container registries and environment configuration.
* Create unit, integration, API and end-to-end tests using tools such as Jest, Playwright and Postman; make testing part of delivery rather than a final step.
* Use AI-assisted development tools, including the Claude extension, to accelerate development, debugging, testing, documentation and technical problem-solving while maintaining code quality and engineering standards.
* Use Git and GitHub effectively through branches, pull requests, code reviews and GitHub Actions.
* Investigate live issues methodically, communicate impact clearly and carry fixes through validation and release.
* Work with the Product Manager and commercial team to translate customer and market needs into technical scope, estimates and delivery plans.
* Improve engineering standards through clear documentation, reusable patterns, technical review and constructive support for colleagues.
Essential experience and capability
* Strong commercial experience with Node.js and JavaScript (TypeScript is a plus) in production systems.
* Confident PostgreSQL and SQL capability, including relational modelling, migrations, query optimisation and data troubleshooting.
* Practical experience designing REST APIs and services within a microservices or distributed architecture.
* Experience with Docker, Kubernetes, Helm and CI/CD delivery workflows.
* Sound testing discipline across unit, integration, API and end-to-end levels.
* Working knowledge of React.js and modern browser technologies sufficient to deliver or diagnose end-to-end features.
* Strong debugging, communication and documentation skills; comfortable working from incomplete real-world evidence.
Useful additional experience
* IoT, sensor, building controls or industrial integration experience, particularly MQTT or Modbus TCP.
* Event-driven and real-time systems, including WebSocket-based communication.
* Python, SQLite, Grafana, Swagger or OpenAPI, Figma, Lucidchart or Whimsical.
* Hospitality technology, hotel operations, energy management or smart-building products.
* Experience of AI-assisted engineering tools used with appropriate review and security controls.
How you will work
* Take ownership without losing sight of the customer outcome.
* Prefer clear, supportable engineering over unnecessary complexity.
* Listen carefully, challenge constructively and explain technical choices in plain language.
* Remain calm and systematic when diagnosing live-site issues.
* Learn quickly and build on previous work rather than repeatedly starting again.
Working at Acacia
This is a hands-on role in a growing business. Priorities can move quickly as customer deployments, product development and partner opportunities evolve. You will be trusted to exercise judgement, communicate clearly and take ownership through to a practical result. Some travel to customer, supplier or project sites may be required.
Equal opportunity
Acacia Green Technologies welcomes applications from people of all backgrounds. Appointment will be based on capability, experience and alignment with the requirements of the role