In-Demand Senior applied scientist Jobs in Sydney, Nsw

Senior Applied Scientist
NinjaTech AI —Sydney NSW
- Full-time
- Doctoral degree
- Computer Science
- Research
Senior Computational Biologist
The Garvan Institute of Medical Research —Sydney NSW
- Up to $140,400 a year
- Full-time
- Management
- Doctoral degree
- Research
- Parental leave
1d
Senior Data Scientist
News Corp —Sydney NSW
- Full-time
- Hybrid work
- Doctoral degree
- Master's degree
- AWS
- Parental leave
Data & Analytics Management Consultant (Senior Consultants/Engagement Manager)
Ember Advisors —Sydney NSW
- Full-time
- Hybrid work
- Microsoft Excel
- Data analysis skills
- Analysis skills
Quick Apply
Senior Scientist, Quantum Sensing (Atom Interferometry)
Q-CTRL —Sydney NSW
- Full-time
- Doctoral degree
- Engineering
- Laboratory experience
14d
Senior Consultant - Audit Technology
KPMG Australia —Sydney NSW
- Full-time
- Hybrid work
- Computer science
- Azure
- DevOps
- Parental leave
Quick Apply
Senior Consultant - Audit Technology
KPMG —Sydney NSW
- Full-time
- Computer science
- Azure
- DevOps
- Parental leave
Senior Platform Engineer
Learnosity —Sydney NSW
- $170,000 - $180,000 a year
- Full-time
- Hybrid work
- Databases
- AWS
- AI
- Commuter assistance
- Health insurance
Quick Apply
8d
Applied AI Specialist
Cloudera —Sydney NSW
- Full-time
- Remote
- Machine learning
- APIs
- AI
- Annual leave
Senior Engineer, ML Systems (AI Products)
Xero —Sydney NSW
- Full-time
- Hybrid work
- Systems design
- SQL
- AWS
Senior Engineer - ML Systems (AI Products)
Xero —Sydney NSW
- Full-time
- Hybrid work
- Systems design
- Research
- Master's degree
Engineering Manager - Machine Learning (AI Products)
Xero —Sydney NSW
- Full-time
- Hybrid work
- Machine learning
- AI
- SDLC
Senior Manager Data Science & AI Global Markets
Commonwealth Bank —Sydney NSW
- Full-time
- SQL
- Machine learning
- AI
8d
Senior Consultant - Data & Analytics (Open)
Synogize —Sydney NSW
- Full-time
- Hybrid work
- Computer Science
- SQL
- Bachelor's degree
Quick Apply
Full Stack Data Scientist
Pet Circle —Sydney NSW
- Hybrid work
- SQL
- AWS
- Presentation skills
- Employee discount
Lead Data Scientist - Trading
Tabcorp —Sydney NSW
- Full-time
- SQL
- AWS
- Parental leave

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Find similar jobs that you might be interested in.

Senior Computational Biologist
The Garvan Institute of Medical Research —Sydney NSW
Lifestyle discounts with our community partners. Experience: 5+ years of relevant postdoctoral or equivalent experience.
Up to $140,400 a year
1d
Senior Research Officer
The Garvan Institute of Medical Research —Sydney NSW
Lifestyle discounts with our community partners. We’re seeking a highly accomplished Senior Postdoctoral Researcher (2-year position) with deep expertise in…
$124,300 - $131,900 a year

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Senior Applied Scientist

NinjaTech AI
Sydney NSW

Apply Now

Job Details

Full-time

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

senior applied scientist jobs in sydney, nsw

Senior Applied Scientist

Senior Computational Biologist

Senior Data Scientist

Data & Analytics Management Consultant (Senior Consultants/Engagement Manager)

Senior Scientist, Quantum Sensing (Atom Interferometry)

Senior Consultant - Audit Technology

Senior Consultant - Audit Technology

Senior Platform Engineer

Applied AI Specialist

Senior Engineer, ML Systems (AI Products)

Senior Engineer - ML Systems (AI Products)

Engineering Manager - Machine Learning (AI Products)

Senior Manager Data Science & AI Global Markets

Senior Consultant - Data & Analytics (Open)

Full Stack Data Scientist

Lead Data Scientist - Trading

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