“Catalyst system” jobs in Canada – Page 19

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• 23d

  Search Systems Engineer - Fully Remote

  Toronto, ON

  

  Mercor

  Candidates need experience shipping production search systems and owning relevance or retrieval for real users. They also need to quantify search improvements, build agentic search systems, and scale search data infrastructure.

  Research, Work independently, Meet deadlines

  23d

  Data Science Expert - Fully Remote | Upto $70/hr

  Toronto, ON

  $60–$70/hr

  

  Mercor

  5+ YOECandidates need at least 5 years as a data scientist, analytics leader or ML engineer at a Fortune 500 technology or enterprise organization. They must have owned data products or ML systems in production and understand data governance and privacy compliance.

  Snowflake, Databricks, Python, R, SQL, Tableau

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $48–$62/hr

  

  Mercor

  Mercor asks for fluency in English and Norwegian and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. Candidates need a structured approach using frameworks or benchmarks and strong communication skills.

  Research, Cybersecurity, Communication skills, Adaptability, ML

  23d

  CS Benchmark Expert - Fully Remote | Upto $84/hr

  Toronto, ON

  $66–$84/hr

  

  Mercor

  Candidates need a PhD or doctoral candidacy in Computer Science, Electrical Engineering or a closely related field, with a Master's considered for exceptional subdomain depth. They need strong graduate-level theory skills and excellent written English.

  Research, Computer science, Electrical engineering, Machine learning

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $20–$22/hr

  

  Mercor

  Candidates need fluency in English and Assamese and prior experience in red teaming, AI adversarial work, cybersecurity or socio-technical probing. They must explain risks clearly to technical and non-technical audiences.

  Research, Cybersecurity, Adaptability, ML

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $20–$22/hr

  

  Mercor

  Candidates need fluency in English and Bengali and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. Strong communication skills for explaining risks to technical and non-technical audiences are also required.

  Research, Work independently, Meet deadlines, Cybersecurity, Communication skills, ML

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $48–$62/hr

  

  Mercor

  Candidates need fluency in English and Swedish and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. Strong communication skills for explaining risks to technical and non-technical people are also required.

  Research, Work independently, Meet deadlines, Cybersecurity, Communication skills, ML

  23d

  AI Safety Specialist - Fully Remote | Upto $22/hr

  Toronto, ON

  $20–$22/hr

  

  Mercor

  Candidates need fluency in English and Assamese and prior experience in red teaming, AI adversarial work, cybersecurity or socio-technical probing. They must explain risks clearly to technical and non-technical people.

  Research, Cybersecurity, Adaptability, ML

  23d

  Public Administration Expert - Senior Level

  Toronto, ON

  $50–$60/hr

  

  Mercor

  5+ YOECandidates need five or more years in a senior role at a federal, state or large municipal agency, or a major public-policy organization. They must have run programs or services at scale and understand how budgets, procurement and legislative review work in practice.

  ERP systems, case management systems, public records platforms, GIS systems, CRM tools

  23d

  Machine Learning Engineer - Fully Remote | Upto $85/hr

  Toronto, ON

  $85/hr

  

  Mercor

  2+ YOECandidates need at least 2 years of professional machine learning engineering experience, including production ML systems or LLM applications. They must already use AI coding agents regularly and be able to judge the quality of model-generated ML code.

  Cursor, Claude Code, Codex, Windsurf, Gemini CLI

  23d

  AI Safety Specialist - Fully Remote | Upto $62/hr

  Toronto, ON

  $48–$62/hr

  

  Mercor

  Candidates need fluency in English and Danish and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. Strong communication skills for explaining risks to technical and non-technical audiences are required.

  Research, Work independently, Meet deadlines, Cybersecurity, Communication skills, ML

  23d

  UI/UX Design Expert - Evaluator

  Toronto, ON

  $80–$150/hr

  

  Mercor

  5+ YOECandidates need 5+ years of professional product design, UI/UX or design systems experience, ideally from a leading digital product studio or in-house design team. They must be fluent in interaction and visual design, design systems and Figma, and communicate very strongly in writing.

  Figma

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $29–$45/hr

  

  Mercor

  Candidates need native fluency in English and Portuguese, prior red teaming or adversarial testing experience, and strong communication skills. Experience in AI adversarial work, cybersecurity or socio-technical probing is required.

  Research, Work independently, Cybersecurity, Communication skills, ML, Penetration testing

  23d

  AI Safety Specialist - Fully Remote | Upto $62/hr

  Toronto, ON

  $48–$62/hr

  

  Mercor

  Candidates need fluency in English and Dutch and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. They must explain risks clearly to both technical and non-technical audiences.

  Research, Work independently, Meet deadlines, Cybersecurity, ML

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $20–$22/hr

  

  Mercor

  Candidates need native fluency in English and Punjabi and prior experience in red teaming, AI adversarial work, cybersecurity or socio-technical probing. They must explain risks clearly to technical and non-technical people and adapt across projects.

  Research, Cybersecurity, Adaptability, ML

  23d

  Civic Policy Specialist - Fully Remote | Upto $60/hr

  Toronto, ON

  $50–$60/hr

  

  Mercor

  5+ YOECandidates need 5+ years in a senior role at a government agency or major public policy organization, plus direct ownership of programs or constituent services. They must also understand how budgets, procurement and legislative review work in practice.

  Government ERP systems, Case management systems, Public records platforms, GIS, CRM tools

  23d

  Fraud Investigator - Fully Remote | Upto $70/hr

  Toronto, ON

  $60–$70/hr

  

  Mercor

  5+ YOECandidates need 5+ years in fraud detection, financial crimes investigation or AML compliance at a Fortune 500 bank, payments company or financial institution. They must have owned large-scale fraud programs or transaction monitoring systems and know enterprise fraud tooling.

  SAS Fraud Management, Actimize, Feedzai

  23d

  Cloud Engineer - Fully Remote | Upto $85/hr

  Toronto, ON

  $85/hr

  

  Mercor

  2+ YOECandidates need at least 2 years of professional DevOps, SRE or cloud engineering experience and hands-on work with AWS, Azure, GCP, Kubernetes, Terraform, CI/CD or observability tools. Regular use of AI coding agents and the ability to judge infrastructure solutions are also required.

  AWS, Azure, GCP, Kubernetes, Terraform, Cursor

  23d

  AI Safety Expert - Red Team

  Toronto, ON

  $20–$22/hr

  

  Mercor

  Candidates need fluency in English and Bengali and prior red teaming experience in AI adversarial work, cybersecurity or socio-technical probing. Strong communication skills for explaining risks to technical and non-technical audiences are also required.

  Research, Work independently, Meet deadlines, Cybersecurity, Communication skills, ML

  23d

  DevOps Engineer - AI Model Evaluator

  Toronto, ON

  $85/hr

  

  Mercor

  2+ YOECandidates need at least 2 years of professional DevOps, SRE or cloud engineering experience with AWS, Azure, GCP, Kubernetes, Terraform, CI/CD or observability tools. They must regularly use AI coding agents and be able to judge the quality of model-generated infrastructure work.

  Kubernetes, Terraform, AWS, Azure, GCP, Cursor

  23d

  UI/UX Design Expert - Evaluator

  Toronto, ON

  $80–$150/hr

  

  Mercor

  5+ YOECandidates need 5+ years of professional product design, UI/UX or design systems experience, ideally at a design studio or in-house product team. They must be fluent in interaction and visual design, design systems and responsive layouts, and communicate very clearly in writing.

  UX design, Research, Work independently, Meet deadlines, Graphic design, Communication skills

  23d

  Network Engineer - Data Annotation

  Toronto, ON

  $50–$70/hr

  

  Mercor

  Candidates need Level 3 or principal support engineering experience with on-call rotations and root cause analyses, plus hands-on enterprise network work with switches, access points and firewalls. Wireless expertise (Cisco WLC, Aruba, Meraki, 802.1X/RADIUS) and packet-level troubleshooting skills are required.

  Cisco WLC, Aruba, Meraki, Wireshark, tcpdump

  23d

  Higher Education Specialist - Senior Level

  Toronto, ON

  $60–$70/hr

  

  Mercor

  5+ YOECandidates need 5+ years in faculty, academic administration, or senior higher education operations, with direct ownership of academic programs or enrollment initiatives. Fluency in higher education tools, budgets, accreditation, and governance is required; rubric or curriculum authorship is preferred.

  Banner, Workday Student, Canvas, Blackboard, Cayuse, InfoEd

  23d

  Fraud Detection Specialist - Enterprise

  Toronto, ON

  $60–$70/hr

  

  Mercor

  5+ YOECandidates need 5+ years in fraud detection, financial crimes investigation or AML compliance at a Fortune 500 bank or financial institution. They must have owned enterprise fraud programs or transaction monitoring systems and know enterprise fraud tooling.

  SAS Fraud Management, Actimize, Feedzai

1 companies