Full Stack Engineer

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 Please apply only if you are currently based in Sydney, available to work from our Sydney office five days per week, and already have unrestricted working rights in Australia. Visa sponsorship is not available for this position. 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. Please apply only if you meet all the following requirements: 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.TypeScript or JavaScript is your primary professional programming language.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 clear 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. Mandatory technical experienceTypeScript and JavaScript Strong professional experience using TypeScript or JavaScript as a primary programming language. 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 APIsAuthentication and authorisation systemsData modelsThird party integrationsBusiness logicCalculations and validation rulesComplex conditional workflowsError handling and production troubleshooting Front end development 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 practicesEnvironment configurationContinuous integration and deploymentProduction releasesLogging and monitoringTroubleshootingBackup and recoverySecure cloud configuration AI and LLM integration Experience integrating AI or large language model services through APIs. You should have a practical understanding of: Prompt designContext managementRetrieval Augmented GenerationStructured outputsDocument processingEvaluation of AI generated resultsImproving relevance, accuracy and consistencyExperience 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 controlSecure API designData privacy and appropriate handling of sensitive informationEncryption in transit and at restSecrets and credential managementLogging and auditabilityDependency and vulnerability managementSecure cloud configurationBackup and recoveryIncident responseDeep 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 platformsNDIS, disability services, healthcare or regulated industriesRetrieval Augmented GenerationEmbeddings and vector databasesDocument processing and information extractionMCP integrationsOAuth, Single Sign On or equivalent authentication technologiesMulti tenant SaaS applicationsWorkflow, case management or approval systemsAutomated quality assurance and AI evaluation frameworksAccessibility standards, including WCAGCybersecurity or secure cloud architectureMicrosoft Power Apps and Power AutomateMicrosoft 365 integrationsPython 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 independentlyAsk precise and relevant questionsIdentify risks and dependencies earlyTranslate complex requirements into maintainable softwareManage work across multiple active productsCommunicate progress clearlyFollow work through from requirements to productionTake responsibility for the quality and reliability of your work Why join KazGard 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. Application requirements Please submit your CV and a brief cover letter answering the following questions. Which recent commercial project best demonstrates your TypeScript, Node.js and React experience?Describe a technically complex workflow, calculation or rules engine that you personally developed.Describe an API, AI service or third party platform that you integrated, including your individual contribution.Give an example of an existing application or unfamiliar codebase that you successfully took ownership of.Confirm your current location and your availability to work from our Sydney office five days per week.Confirm your current Australian working rights.Please include links to relevant products, portfolios or GitHub repositories where appropriate. Generic applications, applications without a cover letter and applications that do not answer the required questions may not be considered. Join KazGard and help us build secure, reliable and effective software solutions for complex real world challenges.