Toronto, On Chemist Jobs – 35 Openings This Week

Computational Chemist - AI Trainer
DataAnnotation —Etobicoke, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Bilingual
- Doctoral degree
- Computer Science
- Flexible schedule
Quick apply
Junior Analytical Chemist
OTI Lumionics Inc. —Mississauga, ON
- $65,000–$90,000 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
5d
Senior Scientist, Electrolyte Development
e-Zinc —Mississauga, ON
- $105,000–$125,000 a year
- Full-time
- Data analysis skills
- Master's degree
- Organizational skills
- Paid time off
Quick apply
13d
Bioanalytical Chemist
WELL Health Technologies Corp —Toronto, ON
- $40,000 a year
- Full-time
- Laboratory experience
- Bachelor's
- In-person
Quick apply
7d
Analyst - Level 1, Raw Material
SGS —Mississauga, ON
- $27–$29 an hour
- Full-time
- Microsoft Powerpoint
- Microsoft Excel
- Microsoft Outlook
- Dental care
- Paid time off
Quick apply
Biotech Scientist - Chromatography
SGS —Mississauga, ON
- $34–$44 an hour
- Full-time
- Doctoral degree
- Master's degree
- Bachelor's
- Dental care
- Paid time off
Quick apply
Senior Research Chemist (Drug Product) - Eurofins CDMO Alphora, Inc.
Eurofins Canada BioPharma —Mississauga, ON
- $75,000 a year
- Immediate opening
- Doctoral degree
- Laboratory experience
- Master's degree
- Designated paid holidays
- Disability insurance
Quick apply
Analyst, Level 2 - GC (18 Month Contract)
SGS —Markham, ON
- $28–$29 an hour
- Contract
- Bachelor's
- Time management
Quick apply
Scientist III – Mass Spectrometry - Eurofins PSS Canada, Inc.
Eurofins Canada BioPharma —Toronto, ON
- $70,000–$80,000 a year
- Immediate opening
- Doctoral degree
- Laboratory experience
- Master's degree
- Designated paid holidays
- Disability insurance
Quick apply
Medical Isotopes Process Development Co-op Student
Kinectrics —Toronto, ON
- $24.44–$28.11 an hour
- Full-time
- Laboratory experience
- Microsoft Office
- Bachelor's
7d
GCMSMS ANALYST II - Eurofins BioPharma Product Testing Toronto, Inc.
Eurofins Canada BioPharma —Toronto, ON
- $55,000–$70,000 a year
- Overtime
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Designated paid holidays
- Disability insurance
Quick apply
Senior Formulation Scientist (Drug Product) - Eurofins CDMO Alphora, Inc.
Eurofins Canada BioPharma —Mississauga, ON
- $90,000 a year
- Immediate opening
- Microsoft Excel
- Engineering
- Laboratory experience
- Designated paid holidays
- Disability insurance
Quick apply
HPLC Analyst - Eurofins BioPharma Product Testing Toronto, Inc.
Eurofins Canada BioPharma —Toronto, ON
- $50,000 a year
- Overtime
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Designated paid holidays
- Disability insurance
Quick apply
Forensic Scientist, Toxicology
Ministry of the Solicitor General —Toronto, ON
- $1,655.00–$2,134.54 a week
- Bilingual
- Word processing
- Laboratory experience
Laboratory Analyst II - Eurofins Cosmetics & Personal Care, Inc.
Eurofins Canada Cosmetic Testing —Toronto, ON
- $65,000 a year
- Overtime
- Laboratory experience
- Organizational skills
- Contracts
- Designated paid holidays
- Disability insurance
Quick apply
Analyst III LCMSMS (Food Testing) - Eurofins Experchem Laboratories, Inc.
Eurofins Canada Food testing —Toronto, ON
- $25 an hour
- Immediate opening
- Laboratory experience
- Microsoft Office
- Bachelor's
- Designated paid holidays
- Disability insurance
Quick apply
Analyst III GCMSMS (Food Testing) - Eurofins Experchem Laboratories, Inc.
Eurofins Canada Food testing —Toronto, ON
- $25 an hour
- Immediate opening
- Laboratory experience
- Microsoft Office
- Bachelor's
- Designated paid holidays
- Disability insurance
Quick apply
Analyst I (Cannabis Testing) - Eurofins Experchem Laboratories, Inc.
Eurofins Canada Food testing —Toronto, ON
- $20 an hour
- Immediate opening
- Microsoft Excel
- Laboratory experience
- English
- Designated paid holidays
- Disability insurance
Quick apply
R&D Scientist – Aptamer Chemistry
PheedLoop Inc. —Toronto, ON
- Full-time
- Doctoral degree
- Presentation skills
- Quality Control
Quick apply
Computational Chemist - AI Trainer
DataAnnotation —Toronto, ON
- $50.00–$140.56 an hour
- Contract
- Remote
- Bilingual
- Doctoral degree
- Computer Science
- Flexible schedule
Quick apply

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Computational Chemist - AI Trainer

DataAnnotation -
Etobicoke, ON

Quick apply

Job details

Contract | Fixed term contract
$50.00–$140.56 an hour

Qualifications

Bilingual
Statistics
Doctoral degree
Computer Science
Writing skills
Engineering
Mathematics
English
Google Cloud Platform
Master's degree
AWS
Bachelor's

Full job description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Computational Chemist - AI Trainer to help train AI models. AI models are increasingly capable of performing complex analytical and scientific reasoning — but these systems still need practitioners with real-world quantitative experience to validate whether the outputs actually hold up in practice. That's where you come in.

You'll work closely with state-of-the-art AI models on tasks like evaluating AI-generated quantitative analysis, solving technical problems, and providing feedback that directly shapes how these systems reason about data, models, and scientific problems. Whether your background is in data science, astrophysics, economics, biostatistics, operations research, or any other quantitative field, if you think rigorously about data and models, your skills are directly applicable here. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass, you'll receive an email confirmation, and paid work will become available on our platform.

Advantages of contracting with us:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour, with bonus rates available on some projects.
Impact: help shape the future of AI systems built to reason about data and analytics.

Responsibilities:

Evaluate AI-generated quantitative work, including statistical analysis, predictive modeling, scientific reasoning, and data-driven insights, for technical accuracy and real-world validity.
Design and solve quantitative problems used to train and benchmark AI systems, spanning areas like forecasting, experimental analysis, optimization, and statistical inference.
Write clear technical explanations and well-documented analytical code.
Provide feedback that directly shapes the next generation of AI models built for quantitative reasoning.

Qualifications:

3+ years of hands-on experience in a quantitative role or research environment — such as data science, statistics, economics, finance, physics, biology, epidemiology, operations research, or any adjacent field.
Some coding experience required, with comfort writing and reviewing analytical code end-to-end.
Practical experience with statistical methods, predictive modeling, and experiment design (e.g., A/B testing, hypothesis testing, regression, classification, time-series forecasting).
Fluency in English (native or bilingual level) with strong writing skills.
A bachelor's degree in a quantitative field preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); an advanced degree (Master’s or PhD) is a plus.
Relevant credentials are a plus (e.g., Kaggle Competition ranking, AWS/GCP ML certifications, or equivalent demonstrated expertise).

Note: Payment is made via PayPal. We will never ask for any money from you. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand.

Quick apply

Refine Your Search

chemist jobs in toronto, on

Computational Chemist - AI Trainer

Junior Analytical Chemist

Senior Scientist, Electrolyte Development

Bioanalytical Chemist

Analyst - Level 1, Raw Material

Biotech Scientist - Chromatography

Senior Research Chemist (Drug Product) - Eurofins CDMO Alphora, Inc.

Analyst, Level 2 - GC (18 Month Contract)

Scientist III – Mass Spectrometry - Eurofins PSS Canada, Inc.

Medical Isotopes Process Development Co-op Student

GCMSMS ANALYST II - Eurofins BioPharma Product Testing Toronto, Inc.

Senior Formulation Scientist (Drug Product) - Eurofins CDMO Alphora, Inc.

HPLC Analyst - Eurofins BioPharma Product Testing Toronto, Inc.

Forensic Scientist, Toxicology

Laboratory Analyst II - Eurofins Cosmetics & Personal Care, Inc.

Analyst III LCMSMS (Food Testing) - Eurofins Experchem Laboratories, Inc.

Analyst III GCMSMS (Food Testing) - Eurofins Experchem Laboratories, Inc.

Analyst I (Cannabis Testing) - Eurofins Experchem Laboratories, Inc.

R&D Scientist – Aptamer Chemistry

Computational Chemist - AI Trainer

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