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Prompt Engineer Jobs in Ontario (NOW HIRING)

AI/ML Engineer

Mississauga, ON · Hybrid

CA$110K - CA$125K/yr

Prompt engineering and LLM quality * Design and iterate on LLM prompts and few-shot examples for copywriting, brand extraction, and translation. * Evaluate prompt and model changes systematically so ...

AI/ML Engineer

Mississauga, ON · Hybrid

CA$110K - CA$125K/yr

Prompt engineering and LLM quality * Design and iterate on LLM prompts and few-shot examples for copywriting, brand extraction, and translation. * Evaluate prompt and model changes systematically so ...

Experience with LLM application development, including AI agents, RAG, prompt engineering, and tool/function calling. Experience with LangChain, LangGraph, or similar LLM orchestration frameworks.

AI Engineer Job Posting Description The AI Engineer will join the AI team supporting the Long-Term ... Implement GenAI and LLM-based solutions, including retrieval-augmented generation, prompt ...

Senior AI Engineer

Toronto, ON · On-site

CA$69K - CA$119K/yr

Deep understanding of prompt engineering, RAG, fine-tuning, and evaluation of generative output, includingtradeoffsacross approaches. * Proficiencyin Python and ML/AI libraries (e.g., Scikit-learn ...

Prompt engineering as code: Manage structured LLM and TTS prompt templates with versioning and a rigorous evaluation harness. * Conversational turn design: Engineer context- and state-aware "thinking ...

Implementing prompt engineering best practices. * Ensuring the agent provides accurate, efficient, and on-brand support. * Managing the bot's tone and ethical guardrails to prevent hallucination and ...

Implement LLM integration layers-prompt engineering, function calling, structured output parsing, and model routing for domain accuracy. * Collaborate with cross-functional teams to collect ...

Showing results 21-40

Prompt Engineer information

See Ontario salary details

$22K

$126.4K

$401.5K

How much do prompt engineer jobs pay per year?

As of Sep 4, 2026, the average yearly pay for prompt engineer in Ontario is $126,440.00, according to ZipRecruiter salary data. Most workers in this role earn between $67,000.00 and $135,500.00 per year, depending on experience, location, and employer.

What is a prompt engineer?

A Prompt Engineer is a professional who designs, refines, and optimizes prompts to improve interactions with AI models, such as ChatGPT. Their role involves understanding model behavior, crafting precise queries, and experimenting with phrasing to achieve desired outputs. They may work in AI research, software development, or content generation to maximize AI efficiency. Strong skills in language, logic, and sometimes coding are essential for success in this role.

What does a prompt engineer do?

A typical day for a Prompt Engineer involves designing, testing, and refining prompts to enhance the performance of AI language models, often collaborating closely with data scientists, software engineers, and product managers. You might analyze the results of model outputs, integrate user or stakeholder feedback, and iterate on prompt strategies to solve diverse business challenges. Your role will usually include documentation, troubleshooting, and keeping up with the latest advances in AI technologies. Expect a mix of independent work and regular team meetings in a dynamic, fast-evolving environment focused on innovation and improvement.

What skills and qualifications are needed to be a prompt engineer?

To thrive as a Prompt Engineer, you need a strong grasp of natural language processing (NLP), machine learning concepts, and experience crafting effective prompts for large language models, usually supported by a technical degree or relevant experience. Familiarity with tools such as OpenAI's API, Hugging Face, or other AI platforms, as well as knowledge of programming languages like Python, is highly valuable. Creative thinking, analytical problem-solving, and cross-functional communication skills help differentiate top candidates in this field. These abilities are crucial for optimizing AI outcomes and ensuring collaboration with both technical and non-technical teams.

Are prompt engineers still in demand?

Prompt engineers are currently in demand as organizations seek professionals skilled in designing effective prompts for AI language models. The role often requires knowledge of natural language processing, machine learning, and familiarity with AI tools like GPT. Demand is expected to grow as AI integration expands across industries.

How much do prompt engineers make?

Prompt engineers typically earn between $80,000 and $150,000 annually, depending on experience, location, and industry. Senior roles or those with specialized skills in AI and machine learning can command higher salaries, especially in tech hubs or companies investing heavily in AI development.

What exactly is prompt engineer work?

A prompt engineer designs and optimizes prompts used to interact with AI language models, ensuring accurate and relevant responses. This role involves understanding AI behavior, crafting clear instructions, and often requires knowledge of machine learning, programming, or data analysis.

What are the most commonly searched types of Prompt Engineer jobs in Ontario?

The most popular types of Prompt Engineer jobs in Ontario are:

What are popular job titles related to Prompt Engineer jobs in Ontario?

For Prompt Engineer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Prompt Engineer jobs in Ontario look for?

The top searched job categories for Prompt Engineer jobs in Ontario are:

What cities in Ontario are hiring for Prompt Engineer jobs?

Cities in Ontario with the most Prompt Engineer job openings:

Infographic showing various Prompt Engineer job openings in Ontario as of August 2026, with employment types broken down into 7% Internship, 61% Full Time, 13% Part Time, and 19% Contract. Highlights an 86% In-person, and 14% Remote job distribution, with an average salary of $126,440 per year, or $60.8 per hour.

Senior Software Engineer, Java and AI Development - Vice President

Citi

Mississauga, ON • On-site

CA$120K - CA$170K/yr

Full-time

Posted 15 days ago


Citibank rating

8.4

Company rating: 8.4 out of 10

Based on 179 frontline employees who took The Breakroom Quiz

39th of 174 rated banks


Job description

We are seeking a highly motivated and skilled Senior Software Engineer to join our innovative team, blending backend development expertise with emerging AI technologies. In this role, you will design, develop, and deploy high-performance applications using Java, Spring Boot, and MongoDB. A significant part of your responsibilities will involve developing and integrating intelligent AI Agents, applying advanced Prompt Engineering techniques, and leveraging the Google ADK to build next-generation solutions that meet key business needs.

Responsibilities Design, develop, and deploy high-performance backend applications using Java and Spring Boot with MongoDB. Develop, integrate, and deploy AI Agents to enhance application intelligence and automation. Apply advanced Prompt Engineering methodologies to optimize interactions with large language models and other AI systems.

Utilize the Google ADK (Agent Development Kit) to build, test, and deploy AI-powered features. Conduct feasibility studies, provide time and cost estimates, and contribute to IT planning and risk assessment for new applications. Monitor and control all phases of the development process, including analysis, design, construction, testing, and implementation.

Provide user and operational support for applications to business users. Recommend and implement security measures in post-implementation analysis to ensure system design and functionality. Act as a Subject Matter Expert (SME) on application development for senior stakeholders and team members.

Drive compliance with applicable laws, rules, and regulations, adhering to company policy and applying sound ethical judgment. Qualifications 6+ years of relevant experience in systems analysis and programming of software applications. Demonstrate significant experience in designing and developing applications using Java and Spring Boot.

Show experience with MongoDB or similar NoSQL databases for data persistence. Have demonstrable experience with AI Agents, including their design, implementation, and integration into software systems. Possess practical experience and a strong understanding of Prompt Engineering principles and best practices.

Show familiarity with the Google ADK or similar AI agent development kits and platforms. Proven experience in managing and implementing successful projects. Ability to operate with a limited level of direct supervision and exercise independence of judgment.

Strong analytical and problem-solving skills, with the ability to work under pressure and manage deadlines. This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $120,800.00 - $170,800.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Automated Processing and AI We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening

Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making.

Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details. ------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi's EEO Policy Statement and the Know Your Rights poster.


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About Citigroup Inc

Sourced by ZipRecruiter

We live in an increasingly complex world. Companies these days are either born global or are going global at record speed. Business and geopolitics are forging an entirely new dynamic and consumers now expect financial services to be a seamless part of their digital lives. Citi is a bank that’s uniquely positioned for this moment. Through our vast global network and our on-the-ground expertise, we can connect the dots, anticipate change and empathize the needs of our clients and customers in ways that other banks simply cannot. Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We have set expectations for how we must act to bring our mission to life. These expectations are at the heart of our Leadership Principles – we take ownership, we deliver with pride and we succeed together.

Industry

Banking and credit intermediation

Company size

5,001 - 10,000 Employees

Headquarters location

New York City, NY, US