In-Demand Database developer Jobs in Sydney, Nsw

Senior Applied Scientist
NinjaTech AI —Sydney NSW
- Full-time
- Doctoral degree
- Computer Science
- Research
14d
Associate TSE II
MongoDB —Sydney NSW
- Hybrid work
- Spanish
- Azure
- Customer service
- Parental leave
Marketing/Admin Assistant
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program
Principal Software Engineer – Digital Customer Journeys
Commonwealth Bank —Sydney NSW
- Full-time
- AWS
- APIs
- AI
Principal Software Engineer – Backend Platforms & Service Domains
Commonwealth Bank —Sydney NSW
- Full-time
- AWS
- APIs
- AI
Junior Travel Consultant
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program
Sales Consultant - New Equipment
Otis —Mascot NSW
- Full-time
- Microsoft Word
- Microsoft Excel
- Sales
SailPoint IIQ Developers
Assertiv Consulting —Sydney NSW
- Urgently hiring
- Management
- Administrative experience
- SQL
Travel Product Coordinator at First Class Travel
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program
Director of Engineering
Freelancer.com —Sydney NSW
- $180,000 - $220,000 a year
- Full-time
- Doctoral degree
- Computer Science
- Writing skills
Quick Apply
Senior Fullstack Engineer
Pyramid Global Technologies —Sydney NSW
- Bachelor's degree
- Agile
- Communication skills
Staff AI Platform Engineer
Relevance AI —Sydney NSW
- Full-time
- Hybrid work
- AWS
- AI
- Parental leave
- Employee assistance program
AWS Consultant - AWS Connect - CX
Concentrix —Sydney NSW
- Full-time
- DevOps
- SQL
- AWS
Lead Engineer
Corto Pty Ltd —Sydney NSW
- Full-time
- Hybrid work
- Management
- Systems design
- APIs
- Gym membership
Quick Apply
3d
Executive Assistant - Travel & Business Operations
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program
Frequent Flyer Points Advisors & Consultants
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program
Sr Solutions Architect Public Sector, SSO-SA Greenfield
Amazon Web Services Australia Pty Ltd —Sydney NSW
- Full-time
- ERP systems
- AWS
- AI
11d
Site Reliability Engineer
Audinate Pty Ltd —Sydney NSW
- Full-time
- Management
- AWS
Platform Support Engineer - Recently Acquired & Growing Australian FinTech!
The Argyle Network —Sydney NSW
- $110,000 a year
- Full-time
- SQL
- AWS
- APIs
Airfare Specialist
Firstclass.com.au —Sydney NSW
- Part-time
- Hybrid work
- Microsoft Excel
- Sales
- Customer service
- Opportunities for advancement
- Referral program

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Senior Applied Scientist

NinjaTech AI
Sydney NSW

Apply Now

Job Details

Full-time
14 days ago

Qualifications

Law
Doctoral degree
Computer Science
Deployment
Data structures
Research
Master's degree
Analysis skills
Machine learning
Deep learning
Natural language processing
AI
Software architecture

Full Job Description

Come build the intelligence behind autonomous AI employees.

At NinjaTech AI, we’re building AI systems that do more than answer questions. Our agents plan, reason, use tools, operate computers, collaborate with humans, and execute complex work over long periods of time. As a Senior Applied Scientist, you’ll help push the capabilities of these systems forward through applied research in reinforcement learning, LLM training, model optimization, natural language systems, and multimodal AI.

This is a highly hands-on role for someone who wants to take cutting-edge research and make it work at production scale. You’ll work closely with our Chief Science Officer, engineering and product leaders, ML engineers, and software developers, with significant ownership over the models and systems that power Ninja.

What You’ll Own

Research, prototype, train, evaluate, and deploy advanced ML and LLM systems, with a particular focus on reinforcement learning and agentic AI.
Develop and apply state-of-the-art RL techniques, including RLHF and related approaches, to improve model reasoning, reliability, accuracy, and task performance.
Design large-scale training and evaluation datasets, including synthetic data generation, statistical modeling, and data-mining techniques.
Train, fine-tune, distill, quantize, and optimize large language models for production environments.
Build high-performance multi-GPU training and inference pipelines using modern acceleration and mixed-precision techniques.
Develop rigorous evaluation frameworks and experimentation systems to measure model quality, behavior, and performance.
Design and run experiments, including A/B tests, to validate model and product improvements.
Build robust, scalable production ML systems and write high-quality code primarily in Python and Rust.
Optimize algorithms and systems for latency, throughput, memory efficiency, and cost.
Advance NinjaTech’s natural-language and speech capabilities, including NLU/NLG, automatic speech recognition, TTS, and STT.
Translate novel academic research into practical capabilities that can be shipped to users.
Continuously evaluate emerging research, models, and techniques and determine where they can meaningfully improve Ninja’s AI systems.

What We’re Looking For

Master’s degree or PhD in Computer Science, Machine Learning, Applied Mathematics, Statistics, Engineering, or a related quantitative field.
Significant experience building end-to-end machine learning or deep learning systems, from data and experimentation through training and production deployment.
Deep understanding of machine learning, deep learning, probability, statistics, optimization, and algorithms.
Strong experience with reinforcement learning methods such as PPO, actor-critic methods, RLHF, or related approaches.
Hands-on experience training, fine-tuning, evaluating, and deploying transformer-based language models.
Strong proficiency in Python; experience with Rust is highly valued.
Deep experience with PyTorch and modern ML tooling and libraries.
Experience with distributed and multi-GPU training, mixed precision, model distillation, quantization, ONNX, and inference optimization.
Experience in one or more of the following areas: natural language understanding, natural language generation, information retrieval, question answering, knowledge extraction, text classification, or speech/audio processing.
Strong understanding of software architecture, data structures, algorithms, database systems, and runtime/performance analysis.
Ability to move comfortably between research and engineering, from exploring a new technique in a paper to shipping a reliable production implementation.
Strong analytical instincts and the ability to independently investigate ambiguous problems, form hypotheses, run experiments, and make evidence-based decisions.

At NinjaTech AI, you won’t be optimizing a small component of a mature system. You’ll help shape the core intelligence of an autonomous AI platform and turn advances in AI research into capabilities used by real customers.

Apply Now

Refine Your Search

database developer jobs in sydney, nsw

Senior Applied Scientist

Associate TSE II

Marketing/Admin Assistant

Principal Software Engineer – Digital Customer Journeys

Principal Software Engineer – Backend Platforms & Service Domains

Junior Travel Consultant

Sales Consultant - New Equipment

SailPoint IIQ Developers

Travel Product Coordinator at First Class Travel

Director of Engineering

Senior Fullstack Engineer

Staff AI Platform Engineer

AWS Consultant - AWS Connect - CX

Lead Engineer

Executive Assistant - Travel & Business Operations

Frequent Flyer Points Advisors & Consultants

Sr Solutions Architect Public Sector, SSO-SA Greenfield

Site Reliability Engineer

Platform Support Engineer - Recently Acquired & Growing Australian FinTech!

Airfare Specialist

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