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Added 1 month ago
AI
AI Platform Engineering Lead
AGF Investments
Toronto, ON
- Full-time
…mentoring other engineers, evaluating platforms, and advising senior leadership. It is a senior role carrying technical leadership responsibility, intended for an engineer-architect who is…
Added 1 month ago
T
Senior Database Platform Engineer
Terminal
Canada
- Contract
We are looking for a Database Reliability Engineer who understands both the architecture and orchestration of data – someone with a sharp engineering mind and a passion for building systems…
Added 1 month ago
Senior Service Reliability Engineer
Fitch Group
Toronto, ON
Fitch Group is currently seeking a Senior Service Reliability Engineer to embed with Fitch Ratings development squads in Toronto and to partner with developers across Chicago, London,…
Added 1 month ago
B
Principal AI Cloud Engineer
BMO
Toronto, ON · FCP
- Full-time
As a Principal AI & Cloud Engineer , you are a hands-on technical developer who designs, builds, and scales cloud-native AI solutions and products. You help set engineering standards,…
Added 1 month ago
JG
Senior DevSecOps & AI Engineer
J&M Group
Toronto, ON
- Contract
We are hiring for a Senior DevSecOps & AI Engineer. This role focuses on application security, DevSecOps, cloud security, and AI/LLM security across enterprise applications and platforms.
Added 1 month ago
M
Applied AI Scientist
Mphasis
Canada
- Full-time
…The objective is not to demonstrate how quickly you can type Python; it is to produce excellent…
Added 1 month ago
C
Senior SDET, Inference Platform
Cerebras
Toronto, ON
- Full-time
Strong programming skills in Python and/or Go (experience with both is a plus).
Added 1 month ago
KM
Senior Data Engineer – Ingénieur des données
KPI Mining Solutions
Montréal-Ouest, QC
- Full-time
Has the title implied, the candidate is a data engineer meaning he is a full fledge experienced developer very solid in both Python and Spark
Added 1 month ago
I
Senior Designer, Optoelectronics
IMAX
Mississauga, ON · Sheridan Park
- Full-time
IMAX is seeking a Senior Optoelectronics Designer/Engineer to play a key role in the research, development, validation, and continuous improvement of next-generation entertainment…
Added 1 month ago
TM
Product Development Engineering Specialist
Trudell Medical International
Waterloo, ON
- $80,000 to $95,000 CAD / year
- Full-time
With oversight from Senior, Principal Engineer or Product Development Project Lead, design mechanical or electromechanical solutions to support device design
Added 1 month ago
TM
Senior Product Development Engineering Specialist
Trudell Medical International
Waterloo, ON
- $105,000 to $125,000 CAD / year
- Full-time
The Senior Product Development Engineering Specialist is responsible for leading the mechanical development activities for advanced medical device programs while contributing to the overall…
Added 1 month ago
AM
AI Platform Engineering Lead
AGF Management
Toronto, ON
- Full-time
…mentoring other engineers, evaluating platforms, and advising senior leadership. It is a senior role carrying technical leadership responsibility, intended for an engineer-architect who is…
Added 1 month ago
AM
Forward Deployed AI Engineer
AGF Management
Toronto, ON
- Full-time
The Forward Deployed AI Engineer is a hands-on technical expert responsible for partnering directly with business stakeholders to identify opportunities, design solutions, and build…
Added 1 month ago
TM
Product Development Engineering Specialist - Core Projects
Trudell Medical International
London, ON
- $80,000 to $95,000 CAD / year
- Full-time
With oversight from Senior, Principal Engineer or Product Development Project Lead, design mechanical or electromechanical solutions to support device design
Added 1 month ago
TM
Senior Product Development Engineering Specialist
Trudell Medical International
London, ON
- $105,000 to $125,000 CAD / year
- Full-time
…sub-systems to support product design.Acting as design responsible engineer (DRE) or as an advisor to more junior…
Added 1 month ago
T
Senior Software Development Engineer in Test
Trackforce
Montreal, QC
- Full-time
Trackforce is seeking an experienced and driven Senior Software Development Engineer in Test (Sr. SDET) to join our Engineering team. In this senior individual contributor role, you will be…
Added 1 month ago
GN
Senior Data Engineer
Ground News
Remote, Canada
- Full-time
- Remote
As a senior Data Engineer, you'll build the analytical foundation that Ground News runs on. You'll sit within our ML chapter and work out of the Platform & Infrastructure pod, splitting…
Added 1 month ago
D
Senior Data Engineer - Data Infra (Canada)
Dandy
Remote, Canada
- $133,600 to $167,000 CAD / year
- Full-time
- Remote
Dandy is hiring a hands-on Senior Data Engineer to join our rapidly growing venture-backed company. The Data Infrastructure team owns the data platform - ingestion, pipelines, and the…
Added 1 month ago
R
Environmental Noise and Vibration Senior Engineer/Scientist
RWDI
Guelph, ON
- Full-time
…to our Environmental Noise & Vibration team in Ontario as a Senior Scientist/Engineer. This role supports clients across the buildings, infrastructure, and industrial…
Added 1 month ago
GT
Senior Software Engineer
Grove Talent
Canada
- Full-time
Senior Software Engineer – Legal Applications (AI-First)
Added 1 month ago
ST
Senior Systems Engineer I
STEMCELL Technologies
Burnaby, BC · Canada - BC, Burnaby, Production Court, Onsite
- Full-time
We’re looking for a Senior Systems Engineer to lead the design, implementation, operation, and continuous improvement of business-critical systems and infrastructure that enable STEMCELL’s…
Added 1 month ago
A
Senior Network Development Engineer, Media Systems Engineering
Amazon
Windsor, ON
- Full-time
Amazon MGM Studios is seeking a Senior Network Development Engineer to lead the design, architecture, and operation of secure, high-performance network and wireless infrastructure across…
Added 1 month ago
BG
Data Architect
Brandt Group of Companies
Regina, SK
- Full-time
Brandt is seeking a highly skilled and motivated Data Engineer to join our dynamic team. The ideal candidate will have a strong background in designing, implementing, and optimizing data…
Added 1 month ago
A
AI Computer Vision Engineer
AssistIQ
Remote, Canada
- Full-time
- Remote
As a Computer Vision/AI Engineer, you will be responsible for designing and developing reliable, maintainable, and scalable CV systems. In this role, you’ll apply computer vision and…
Added 1 month ago
CA
Senior Software Engineer, Machine Learning
Chorus AI
Toronto, ON
- $150,000 to $170,000 CAD / year
- Full-time
Reports to: Technical CEO, working directly with our Founding Engineer and Founding Data Scientist

Mphasis

Applied AI Scientist

Canada

Full-time

Apply About employer

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Job details

Job type: Full-time
Posting language: English
Posted: Sep 23, 2026

Original job description

Applied AI Scientist

We are looking for exceptional quantitative thinkers to build agentic systems that help people make better decisions.

This is not primarily a conventional data science role, an LLM application-development role, or a prompt-engineering role. We are interested in people who want to understand how intelligent systems can reason over complex problems, use tools and models effectively, learn from evidence, and become systematically better over time.

What You Will Do

Design and build agentic decision-support systems that can reason over data, interact with tools and models, maintain state, decompose complex problems and support consequential human decisions.
Develop mechanisms for systematic improvement. Design evaluation frameworks, feedback loops, benchmarks, experiments and instrumentation that allow us to determine where a system fails, why it fails and whether a proposed change genuinely improves it.
Turn “make the agent better” into a quantitative problem. Define measurable objectives and failure modes; build representative test sets; analyze performance distributions rather than anecdotes; and distinguish real improvement from movement on a convenient metric.
Explore self-improving agentic architectures. This may involve reflection and critique, adaptive tool or model selection, memory, search, planning, generated training/evaluation data, policy improvement, human feedback, simulation or other mechanisms. We are interested in what works - not in allegiance to a particular architecture.
Bring statistical and machine-learning judgment to agentic systems. Use probabilistic modelling, statistical inference, ML, optimization or causal reasoning when they make the system more useful, more reliable or easier to improve.
Generate high-quality software using AI coding systems. We expect you to work AI-natively. The objective is not to demonstrate how quickly you can type Python; it is to produce excellent software.
Own difficult problems end to end. Work from an initially ambiguous business or decision problem through problem formulation, system design, implementation, evaluation and deployment.
Challenge the problem definition. A technically sophisticated solution to the wrong problem is still the wrong solution. You should be comfortable questioning assumptions and reframing what is being optimized.
Work directly with senior technical and business stakeholders. Explain complex ideas precisely without hiding behind jargon, and make uncertainty, assumptions and limitations explicit.

What We Are Looking For

Exceptional quantitative foundations

You have rigorous training in a highly quantitative discipline such as mathematics, physics, statistics, engineering, econometrics, operations research or another discipline involving substantial mathematical and quantitative reasoning.

You should be comfortable reasoning mathematically about unfamiliar problems rather than relying solely on methods you have used before.

Experience with agentic systems

You have meaningful hands-on experience designing or developing agentic systems.

We are particularly interested in experience involving some combination of:

multi-step reasoning and planning
structured outputs and stateful workflows
memory and context management
multi-agent or decomposed-agent architectures
agent evaluation
automated critique or refinement
feedback-driven adaptation
decision-support applications
mechanisms intended to improve system performance over repeated iterations.

A master's or PhD is welcome, but neither is a substitute for strong analytical thinking.

The role is product-oriented: you will shape the capabilities, workflows and evaluation systems that make our agentic products more useful, reliable and improvable.

You will turn difficult enterprise problems, user needs and client lessons into reusable product capabilities. Working with technical, product, domain and client-facing teams, you will identify high-leverage problems, formulate improvement hypotheses, and design experiments that distinguish genuine progress from superficial gains.

We expect you to move quickly from ideas to prototypes and measurable evidence without compromising reasoning, quality or technical integrity. The goal is not to build the most elaborate AI system, but products that make better decisions, whose performance we can understand, and which we know how to improve.

You do not need to be a specialist in every branch of machine learning, but you should have enough statistical maturity to reason properly about evidence.

We expect practical familiarity with statistical modelling and machine learning and, more importantly, sound instincts around:

uncertainty
validation
sampling and selection effects
overfitting
experiment design
measurement
predictive versus causal claims
distribution shift
determining whether a system actually works.

What matters is whether you can make those systems produce excellent code.

You should be capable of:

designing a coherent software architecture before or while implementation emerges;
decomposing work effectively for coding agents;
inspecting and interrogating unfamiliar generated code;
identifying bad abstractions, subtle bugs and unnecessary complexity;
designing meaningful tests rather than merely achieving test coverage;
maintaining reproducible environments;
understanding APIs, data pipelines and production system boundaries;
debugging systems whose implementation you did not personally type; and
leaving behind code that another strong engineer can understand, extend and trust.

You are accountable for every line you ship even if you personally typed none of them.

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More about this job

Responsibilities

Design, build, and deploy agentic decision-support systems that reason over data, use tools and models, and support consequential decisions. Develop quantitative evaluation and feedback mechanisms to measure system performance, identify failures, and improve products through experiments and evidence.

Requirements

Candidates should have rigorous quantitative training and meaningful hands-on experience designing or developing agentic systems. They should demonstrate statistical and machine-learning judgment, strong software architecture and debugging skills, and the ability to own ambiguous problems through implementation, evaluation, and deployment.

Skills

Agentic Systems
Quantitative Reasoning
Statistical Modeling
Machine Learning
Probabilistic Modeling
Statistical Inference
Optimization
Causal Reasoning
System Evaluation
Experiment Design
Software Architecture
AI-Assisted Coding
Planning
Memory and Context Management
Data Analysis
Production Systems

Visa sponsorship

Not detected in the job text

Keywords

Agentic Systems
Decision-Support Systems
Multi-Step Reasoning
Planning
Structured Outputs
Stateful Workflows
Memory Management
Context Management
Multi-Agent Architectures
Agent Evaluation
Automated Critique
Feedback Loops
Adaptive Tool Selection
Model Selection
Probabilistic Modeling
Statistical Inference
Machine Learning
Optimization
Causal Reasoning
Experiment Design
Benchmarks
Performance Measurement
Distribution Shift
Software Architecture
AI Coding Systems
APIs
Data Pipelines
Production Systems
Reproducible Environments
Enterprise Products

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