Full Stack Engineer | TypeScript, Node.js, React, AWS and AI

Location: Sydney, NSW

Employment type: Full time

Working arrangement: On site, five days per week

Experience required: Minimum 4 years of commercial software development experience

Applications from candidates who do not meet these requirements may not progress to the next stage.

Important information before applying

This is a hands on, mid level software engineering role.

- You are currently based in Sydney, or are able to commute reliably to our Sydney office five days per week.
- You have current Australian working rights.
- You have at least 4 years of professional commercial software development experience.
- You have recent commercial experience with Node.js and Express.js or NestJS.
- You have recent commercial experience with React or Next.js.
- You have experience developing and maintaining REST APIs, databases, authentication systems and third party integrations.
- You have practical experience deploying and supporting production applications in AWS.
- You are comfortable working across both back end and front end development.
- You have experience taking ownership of an existing application or unfamiliar codebase.

This role is not suitable for graduate developers, front end only developers, data analysts, project managers, candidates seeking a fully remote position, or applicants without commercial TypeScript and Node.js experience.

Applications that do not clearly demonstrate the mandatory requirements may not progress to the next stage.

About KazGard

KazGard develops practical software and AI solutions for organisations operating in regulated and complex industries.

Our products support areas including enterprise compliance, audit, disability services, membership management, document processing and business process automation.

We are looking for a capable and motivated Full Stack Engineer who can take ownership of existing applications and contribute to the development of new secure, reliable and maintainable products.

About the role

You will work across the full application lifecycle, from understanding business requirements and reviewing existing codebases, through to development, testing, deployment and production support.

This is a role for an engineer who is comfortable investigating problems independently, working through complex business logic and taking responsibility for delivering complete solutions.

Your strongest skills may be in back end development, but you must also be comfortable implementing and maintaining front end functionality.

You will collaborate with software engineers, IT, project management, UX and UI designers and client stakeholders.

Key responsibilities

- Develop and maintain full stack web applications using TypeScript, Node.js and React based technologies.
- Take ownership of existing software products following a structured technical handover.
- Review unfamiliar codebases, diagnose issues and implement maintainable solutions.
- Design,



develop and maintain REST APIs, authentication systems, data models and third party integrations.
- Implement complex business logic, calculations, validation rules, permissions and workflow automation.
- Build responsive and accessible user interfaces from established UX and UI designs.
- Integrate AI and large language model services into practical business applications.
- Develop document processing, contextual retrieval, Retrieval Augmented Generation and structured output capabilities.
- Improve AI generated outputs for relevance, accuracy, consistency and reduced duplication.
- Integrate applications with third party APIs, webhooks, Microsoft 365 and enterprise systems.
- Support automated testing, deployment, monitoring, troubleshooting and production releases.
- Maintain transparent technical documentation, including README files, architecture notes, technical decisions and deployment instructions.
- Communicate technical decisions, risks, limitations and dependencies clearly to both technical and non technical stakeholders.

You should be able to debug issues across multiple application layers, understand unfamiliar code and identify the underlying cause of technical problems.

Back end development

Commercial experience with Node.js and Express.js or NestJS.

You must be comfortable designing and maintaining:

- REST APIs
- Authentication and authorisation systems
- Third party integrations
- Business logic
- Calculations and validation rules
- Complex conditional workflows
- Error handling and production troubleshooting

Commercial experience with React or Next.js.

You must be able to implement responsive, accessible and maintainable interfaces from established designs.

You should understand component architecture, state management, API integration, form validation, error handling and cross device behaviour.

Databases

Hands on experience with MongoDB or another non relational database.

You should be able to design structured and maintainable data models.

Experience with relational databases and SQL is advantageous.

AWS and production delivery

Practical experience deploying, maintaining and supporting production applications in AWS.

You should understand:

- Source control and branching practices
- Continuous integration and deployment
- Production releases
- Logging and monitoring
- Troubleshooting
- Backup and recovery

AI and LLM integration

Experience integrating AI or large language model services through APIs.

You should have a practical understanding of:

- Context management
- Retrieval Augmented Generation




- Structured outputs
- Evaluation of AI generated results
- Improving relevance, accuracy and consistency

Experience with embeddings, vector databases, AI agents or MCP integrations is highly regarded.

Software quality and documentation

You should have a practical approach to automated testing, code reviews, debugging and software quality.

You must be able to document your work clearly enough for another engineer to understand, maintain and extend it.

Security expectations

Our applications may process confidential, financial, operational and personal information.

Security awareness must be part of how you design, develop, test and review software.

You should understand the fundamentals of:

- Authentication and role based access control
- Data privacy and appropriate handling of sensitive information
- Encryption in transit and at rest
- Secrets and credential management
- Logging and auditability
- Dependency and vulnerability management
- Backup and recovery

Deep cybersecurity specialisation is not required, but experience with OWASP, ISO or NIST practices is advantageous.

Highly regarded experience

Experience in one or more of the following areas would be advantageous:

- Enterprise compliance, audit or governance platforms
- NDIS, disability services, healthcare or regulated industries
- Retrieval Augmented Generation
- Embeddings and vector databases
- Document processing and information extraction
- MCP integrations
- OAuth, Single Sign On or equivalent authentication technologies
- Workflow, case management or approval systems
- Automated quality assurance and AI evaluation frameworks
- Accessibility standards, including WCAG
- Cybersecurity or secure cloud architecture
- Microsoft Power Apps and Power Automate
- Microsoft 365 integrations
- Python

How you will work

We are looking for someone who takes ownership rather than waiting for individual tasks to be assigned.

You should be able to:

- Investigate technical problems independently
- Ask precise and relevant questions
- Identify risks and dependencies early
- Translate complex requirements into maintainable software
- Communicate progress clearly
- Follow work through from requirements to production
- Take responsibility for the quality and reliability of your work
- Work on practical software and AI solutions used by real organisations.
- Take meaningful ownership of products and technical decisions.
- Contribute across the full application lifecycle.
- Solve complex problems involving AI, documents, automation, compliance and workflows.
- Work directly with a multidisciplinary Sydney based team.
- Help improve our software development, testing, documentation and security practices.
- Join a growing organisation with opportunities to expand your technical responsibilities.

Join KazGard and help us build secure, reliable and effective software solutions for complex real world challenges.

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📌 Full Stack Engineer | TypeScript, Node.js, React, AWS and AI | Sydney Based (New South Wales)
🏢 KazGard
📍 New South Wales