Senior Full-Stack Engineer

Celebal Technologies; Brisbane; Hybrid; AUD 90,000 - 130,000; Full time

Job summary

Celebal Technologies seeks a motivated Full Stack Developer to build modern, cloud-native apps leveraging Databricks for data processing, Python for backend services, and Next.js for responsive web interfaces. This 6-month+ contract supports enterprise analytics integrations and AI/ML workflows, with remote or hybrid work from Brisbane, QLD.

You will design scalable backend services (FastAPI, Flask, or Django), build RESTful APIs, create dashboards, implement authentication (OAuth2, JWT), and

Qualifications

• Databricks, ETL pipelines and PySpark.
• FastAPI (Must).
• REST API Development.
• AuthN basics (JWT, OAuth2).

Responsibilities

• Develop data processing workloads using Databricks.
• Build PySpark notebooks and workflows for data transformation and analytics.
• Develop backend services with Python and REST APIs.
• Create Next.js frontend components and dashboards.
• Implement authentication and authorization (OAuth2, JWT).

Skills

Python

Databricks

Next.js/React

REST APIs

OAuth2/JWT

FastAPI

Azure Cloud

Git/GitHub Actions

Tools

FastAPI

GitHub Actions

Azure DevOps

Job description

Location: REMOTE or Hybrid from Brisbane QLD 4000

Duration: 6 months++

Experience: 3–5 years of software development experience, with hands-on expertise in Python, Databricks, and Next.js/React.

Job Summary

We are seeking a highly motivated Full Stack Developer to build modern, scalable, cloud-native applications that leverage Databricks for data processing, Python for backend services and APIs, and Next.js for responsive web applications.

The ideal candidate will have experience developing enterprise-grade applications that integrate with analytics platforms, data pipelines, AI/ML services, and cloud-native technologies. The role requires strong backend engineering skills, modern frontend development capabilities, and experience working with Databricks as the compute platform.

Key Responsibilities

Databricks & Compute

• Develop and maintain data processing workloads using Databricks.
• Build PySpark notebooks and workflows for data transformation and analytics.
• Integrate applications with Databricks Jobs, Workflows, SQL Warehouses, and REST APIs.
• Optimize Spark jobs for performance, scalability, and cost efficiency.
• Work with Delta Lake, Unity Catalog, and Medallion Architecture.
• Develop data APIs and services that consume Databricks datasets.
• Design and develop scalable backend services using Python (FastAPI, Flask, or Django).
• Build RESTful APIs and microservices.
• Develop authentication and authorization mechanisms (OAuth2, JWT, SSO).
• Integrate backend services with Databricks, Azure services, and third-party APIs.
• Implement asynchronous processing and background jobs.
• Write reusable, well-tested, and maintainable code.
• Build logging, monitoring, and error-handling capabilities.

Frontend Development (Next.js)

• Develop responsive web applications using Next.js and React.
• Create reusable UI components and modern dashboards.
• Integrate frontend applications with backend APIs.
• Implement authentication and role-based access control.
• Optimize application performance and user experience.

Integration & Cloud

• Integrate applications with Azure cloud services.
• Consume APIs from enterprise applications and external systems.
• Implement secure API communication and data exchange.
• Participate in cloud deployment and infrastructure discussions.

DevOps & CI/CD

• Use Git for source control and collaborative development.
• Build and maintain CI/CD pipelines using Azure DevOps or GitHub Actions.
• Support automated testing and deployment processes.
• Participate in code reviews and enforce coding standards.

Quality & Security

• Develop unit and integration tests.
• Ensure applications meet enterprise security and compliance requirements.
• Implement secure coding practices and vulnerability remediation.
• Troubleshoot production issues and support release activities.

Must Have:

Data Engineering core concepts

• Databricks
• ETL Pipelines, Medallion Architecture, PySpark
• Databricks Automation Bundles
• FastAPI (Must)
• REST API Development
• AuthN Basics (JWT, OAuth2)