Senior Backend API Developer

Paxus - Technology + Digital Talent; City of Brisbane; Hybrid; AUD 140,000 - 190,000; Full time

Job summary

Paxus seeks three Senior Software Developers to design, build and support secure, scalable backend services and consumer APIs for enterprise and government-facing platforms. You’ll work in a hybrid setup with modern Golang, GraphQL, and cloud-native deployments on Kubernetes and AWS EKS.

You will collaborate with frontend teams, Salesforce/MuleSoft specialists, and solution architects to accelerate delivery, improve testing, and maintain high security and quality standards while leveraging

Qualifications

• 5+ years backend API development in large-scale environments.
• Strong API design, GraphQL, authentication and service communication.
• Experience with Kubernetes and AWS (EKS).
• CI/CD, automated testing, and secure coding practices.

Responsibilities

• Design, develop, test and maintain secure backend services and APIs.
• Develop cloud-native apps in Kubernetes and AWS EKS.
• Collaborate with cross-functional teams to deliver integrated solutions.
• Apply AI-assisted tools to improve testing, docs and delivery.
• Support platform reliability, security and operational excellence.
• Review AI-generated code and uphold engineering principles.

Skills

Golang

GraphQL

Kubernetes

AWS EKS

API design

CI/CD

AI-assisted tooling

Security & auth

Education

Bachelor’s in CS/Software Eng

Tools

Git

Jenkins

Terraform

Docker

Cloud tooling

Job description

Are you an experienced software engineer specialising in backend development with a passion for delivering scalable, secure digital solutions? Do you thrive working within dynamic, multidisciplinary teams on high-impact projects? We are seeking three talented Senior Software Developers to contribute to innovative digital platforms supporting Australia’s disability community. This is an exceptional opportunity to work on meaningful initiatives that make a difference, leveraging cutting-edge technologies and AI-enhanced development practices.

About the Role

As a Senior Backend API Developer, you will be responsible for designing, developing, and supporting enterprise-grade backend services and consumer APIs that underpin various web applications, portals, and mobile platforms. Working as part of a diverse delivery team, you will craft secure, scalable services utilising modern frameworks such as Golang and GraphQL, with deployments to Kubernetes and AWS EKS environments. Your role will involve close collaboration with frontend teams, Salesforce developers, MuleSoft integration specialists, and solution architects to deliver seamless digital ecosystems. A key part of your responsibilities includes utilising AI-assisted tools to accelerate development cycles, improve testing and documentation, and troubleshoot while maintaining high standards for security, quality, and maintainability.

Key Responsibilities

• Design, develop, test, and maintain secure backend services and APIs using Golang, GraphQL, and modern framework practices.
• Develop and support cloud-native applications in Kubernetes and AWS EKS environments.
• Collaborate with cross-functional teams to deliver integrated digital solutions, ensuring secure authentication and seamless service interactions.
• Employ AI-assisted development tools to enhance efficiency in implementation, testing, and troubleshooting while ensuring technical quality.
• Contribute to platform reliability, security, operational excellence, including supporting Cloudflare Zero Trust and secure connectivity.
• Review, validate, and improve AI-generated code, maintaining a strong understanding of underlying engineering principles.

Essential Skills & Qualifications

• Proven experience developing secure, scalable backend APIs using Golang within enterprise or large-scale digital environments.
• Strong knowledge of API design and integration patterns, including GraphQL, authentication, authorization, API lifecycle management, and service-to-service communication.
• Demonstrated experience building and operating cloud-native applications on Kubernetes and AWS (including Amazon EKS).
• Hands‑on experience with source control, automated testing, CI/CD pipelines, and delivering integrated end-to-end digital solutions.
• Effective utilisation of AI-assisted software engineering tools for development, debugging, testing, documentation, and delivery, complemented by a deep understanding of engineering principles.
• Excellent collaboration and communication skills to work effectively within multidisciplinary teams and articulate technical concepts to non‑technical stakeholders.

Nice to Have Skills

• Experience supporting Cloudflare security technologies such as Zero Trust, Tunnels, and Edge Security.
• Background in designing consumer‑facing API platforms for web, portal, or mobile applications.
• Familiarity with enterprise platforms such as Salesforce, MuleSoft, or comparable integration architectures.
• Experience within government or highly regulated technology environments.

Preferred Education and Experience

• Tertiary qualifications in Computer Science, Software Engineering, or related fields.
• Minimum of five years’ experience in backend development, API design, and cloud‑native architectures in a senior capacity.

Other Requirements

• Ability to obtain Baseline Security Clearance.
• 12 months contraqct with another 12 months extension option.
• Open to QLD, WA, ACT, VIC, NSW, NT, SA, TAS
• Australian citizenship is mandatory
• Flexible hybrid working arrangements subject to policies, with a minimum of two days in the office per week.

Paxus values diversity and welcomes applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability. If you require an adjustment to the recruitment process, including the application form in an alternate format, please contact me on the above contact details.