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Added 3 mins ago
WH
Senior Director, Human Resources (Unionized)
Waterstone Human Capital
Mississauga, ON
- Full-time
Direct Reports: Regional HR Leaders, HR Managers, HR Business Partners
Added 3 mins ago
TR
Social Media Manager
Thomson Reuters
Toronto, ON
- $37 to $42 CAD / hour
- Contract
Act as a key social lead for external campaigns across X, Facebook, YouTube, LinkedIn, Instagram and TikTok, from campaign planning and creative development through launch and reporting.
Added 3 mins ago
I
Senior Consultant - Oracle RMCS and Financials Cloud
Infosys
Mississauga, ON
- $92,740 to $105,007 CAD / year
- Full-time
…testing cycles like SIT & UAT, manage and control technical development, deployment, SIT/UAT defects resolution, production incidents support. In this role, the candidate will interact with…
Added 3 mins ago
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Corporate Controller
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- Full-time
· Lead the corporation’s internal control development, monitoring and reporting
Added 3 mins ago
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Montreal, QC
- Full-time
Join a Global Leader in Wear Protection Solutions
Added 4 mins ago
Director, Global Cash Management Platforms
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Toronto, ON
The Director leads the strategic direction, development, and delivery of technology solutions across Global Cash Management technology. This role ensures alignment with business goals,…
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Counter Sales Associate
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An opportunity for career development across many business departments within our organization.
Added 4 mins ago
Clinical Service Leader - Clinical Nutrition - Infant Nutrition Preparation Room
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…health services and supports centralized administrative and business functions for Manitoba health…
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Safer. Faster. Smarter. Aecon Civil is a recognized leader in the market, backed by strong self-perform capabilities and deep local expertise. We play a key role in building and enhancing…
Added 19 mins ago
Supply Chain Systems and Optimization Manager
HF Sinclair
Mississauga, ON
…to support profitable growth in partnership with Sales. This leader oversees the design, implementation, and management of best‑in‑class logistics processes and systems to enable…
Added 19 mins ago
Staff AI Developer - Vancouver
Robots and Pencils
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In this role, you will work as a key technical leader on a cross-functional team, defining AI architecture, leading model development and optimization, and solving challenging integration…
Added 19 mins ago
Master Scheduler
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NS · Bedford, Nova
DRS Pivotal Power, Inc. is located in Bedford, Nova Scotia. DRS Pivotal Power is a leader in the design, development and manufacture of high reliability power conversion equipment for…
Added 19 mins ago
UG
Area Manager, Ontario
Umdasch Group
Bolton, ON · Caledon, Ontario
- Full-time
Strategic Business Leader: Balances short-term sales execution with long-term regional growth planning.
Added 19 mins ago
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Development Lead (Back-end Systems)
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Toronto, ON
- Full-time
The Development Lead is a senior, hands-on technical leader who drives technical direction, sprint execution, and delivery outcomes within an Agile delivery pod. This role owns technical…
Added 33 mins ago
BG
Area Director – Canada
BNI Global
Toronto, ON
- Full-time
Added 34 mins ago
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Vice President of Production
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Toronto, ON · Greater Toronto Area, Canada
- $250,000 to $375,000 CAD / year
- Full-time
The successful candidate will be a strategic leader with exceptional business acumen, strong global manufacturing relationships, and a demonstrated ability to drive operational…
Added 34 mins ago
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Experience in business development, B2B sales, SaaS, commercial strategy, entrepreneurship, or organizational leadership.
Added 34 mins ago
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- $100,000 to $150,000 CAD / year
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Our client, a global leader in sustainable engineering, architecture and environmental consulting, is seeking a Hydrogeologist to join their team. This is a permanent, full-time position,…
Added 34 mins ago
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Quality Engineer (Temp to hire) - Automotive Parts Manufacturer (KN36204)
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- $70,000 to $75,000 CAD / year
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Experience with quality systems, process development, and policy implementation
Added 34 mins ago
TI
Senior Project Manager
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Excellent written and verbal communication skills, including executive reporting and business case development.
Added 34 mins ago
SG
Associate Design Strategist
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Added 34 mins ago
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Thermal Mechanical Engineering Team Lead
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- $115,000 to $170,000 CAD / year
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This is an excellent opportunity for an experienced mechanical engineering leader who combines a strong background in thermal design, fluid dynamics, mechanical product development, and New…
Added 34 mins ago
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- Full-time
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Added 34 mins ago
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- Full-time
You have a passion for driving sales: As a key LOD (Leader on Duty), you're an expert at driving sales by maximizing Fitting Room and Salesfloor productivity and building guest loyalty…
Added 49 mins ago
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Robots and Pencils

Staff Engineer / AI Builder - Toronto

Toronto, ON, Canada

The salary range for this role is $ $165,604 - $228,491 USD.

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Job details

Pay: The salary range for this role is $ $165,604 - $228,491 USD.
Experience: 6+ years of professional software engineering experience, including meaningful time shipping GenAI/LLM-powered systems in production - not just prototypes
Posting language: English
Posted: Nov 3, 2026

Original job description

We’re looking for a Staff AI Builder to lead the design and delivery of AI/ML systems. This role is ideal for an experienced engineer who thrives on architectural decisions, can confidently own systems end-to-end, and contributes to technical leadership across the team.

In this role, you will work as a key technical leader on a cross-functional team, defining AI architecture, leading model development and optimization, and solving challenging integration problems. You’ll be joining real, in-flight work where reliability, security, and scalability are critical. You’ll establish engineering standards, raise the bar on how we build AI systems, and contribute to the technical decisions that shape how our AI work scales over time.

Why This Role Matters

At Robots & Pencils, we design AI systems for a human world. Our name says it all. Robots and pencils means engineering paired with creativity, because every agent we ship has to work for real people in real workflows. That balance is baked into how we operate.

Every role here contributes directly to that mission. Here, you shape how AI systems integrate into enterprise operations, how teams move at real velocity, and how products create measurable impact for clients and the people they serve. We ship production-ready AI in 30 to 45 days. That pace demands people who take ownership, lead with craft, and care deeply about what they put their name on.

What You'll Do

Agentic & GenAI Engineering

Design and build agentic workflows - reasoning loops, tool/function calling, and orchestration across single- and multi-agent architectures - with clear judgment on which pattern fits the problem and which doesn't
Build and maintain RAG pipelines: chunking strategy, embeddings, vector search (OpenSearch), re-ranking, and staleness/refresh handling for dynamic knowledge sources
Integrate with AWS Bedrock and Agent Core, including MCP-based tool design - writing tool descriptions precise enough that an orchestrator routes correctly every time
Write and iterate on production system prompts - structured role framing, output constraints, and few-shot design - not just prompt tinkering
Build eval and observability into every agent you ship: golden datasets, RAGAS-style metrics, LLM-as-judge (as both a runtime guardrail and an offline eval), and tracing via LangFuse/LangSmith or equivalent
Design for LLM failure, not just LLM success: retries with backoff and jitter, circuit breakers, fallback models, and a clear user-facing story when something upstream degrades

Full-Stack & Platform Engineering

Build backend services in Python and Node.js, including serverless architectures (AWS Lambda, API Gateway) that support agentic workflows
Design DynamoDB single-table schemas - composite keys, transactional writes - for conversation state, agent memory, and session history
Support event-driven orchestration (Step Functions, SQS, EventBridge) for asynchronous agent operations, with an eye toward reliability and clean error handling
Contribute to frontend integration points so agentic features land cleanly for end users, and write clean, well-tested code across the stack
Support deployment, monitoring, and production troubleshooting in cloud-native environments (AWS, Docker), with guidance from senior engineers where needed

Collaboration & Technical Leadership

Bring informed technical judgment to architecture discussions - naming the real trade-offs of a pattern (e.g., gateway centralization vs. latency, single- vs multi-agent design) rather than defaulting to what's familiar
Partner with product, design, and delivery leads across global teams to scope and ship features end-to-end
Mentor other engineers on the pod and help raise the bar on agentic engineering practices, including AI-assisted development tools like Claude Code
Own assigned features and releases end-to-end - including the unglamorous parts: debugging, hardening, and keeping production systems trustworthy

What You'll Bring

6+ years of professional software engineering experience, including meaningful time shipping GenAI/LLM-powered systems in production - not just prototypes
Real, hands-on depth in agentic AI: reasoning loops, tool/function calling, multi-agent orchestration, and a considered point of view on when single-agent design beats multi-agent, and why
Practical RAG expertise: chunking strategies, embeddings, vector databases (OpenSearch or similar), cosine similarity search, and re-ranking - you can explain the mechanism, not just the terminology
Experience building evaluation and observability for LLM systems: golden datasets, LLM-as-judge, RAGAS or comparable metrics, and tracing tools like LangFuse/LangSmith
Strong prompt engineering skills - you can write a production system prompt with real structure and constraints on request, not just describe the concept
Hands-on experience with the AWS GenAI stack: Bedrock, Agent Core, Lambda, DynamoDB (single-table design), S3, SQS, EventBridge, Step Functions
Strong Python and Node.js skills, with experience building full-stack applications and RESTful APIs
Solid understanding of production reliability patterns for LLM-backed systems: retries/backoff, circuit breakers, fallback models - as a bundle, not a single tactic
Experience with containerization (Docker) and cloud-native deployment
Comfort owning ambiguous, integration-heavy problems, and the ability to go a level deeper when someone pushes on your answer instead of staying abstract
Legally authorized to work in Canada and eligible to secure immediate U.S. non-immigrant work authorization (e.g., TN status under USMCA) for mandatory weekly on-site client delivery (3 days/week) in the United States.

Helpful Extras and Unique Skills

Direct experience with Amazon Bedrock Agent Core - agent registration, MCP tool wiring, memory/session management, gateway provisioning
Experience in a regulated or high-stakes domain (education, healthcare, financial services) where evaluation rigor and reliability carry real consequences
Familiarity with workflow orchestration tools such as Step Functions, Sequencer, or similar state-machine-based systems
A point of view on LLM observability tooling, gained from actually running it in production rather than reading about it

The below range reflects the range of possible compensation for this role at the time of this posting. We may ultimately pay more or less than the posted range. This range may be modified in the future. An employee's position within the salary range will be based on several factors including, but not limited to, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, shift, travel requirements, sales or revenue-based metrics, any collective bargaining agreements, and business or organizational needs. The salary range for this role is $ $165,604 - $228,491 USD.  We offer a comprehensive package of benefits including paid time off, medical/dental/vision insurance and 401(k) to eligible employees.

An offer of employment may be conditional upon successful completion of a background check in accordance with local legislation and our candidate privacy notice. Your current employer will not be contacted without your permission.  We are committed to ensuring equal employment opportunities for all job applicants and employees. Employment decisions are based upon job-related reasons regardless of an applicant's race, color, religion, sex, sexual orientation, gender identity, age, national origin, disability, marital status, genetic information, protected veteran status, or any other status protected by law.

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More about this job

Responsibilities

Design and deliver production-grade agentic AI systems, including orchestration, RAG pipelines, prompts, evaluation, observability, and reliability safeguards. Build and support cloud-native services and integrations, make architecture decisions, mentor engineers, and own features and releases end-to-end.

Requirements

Requires 6+ years of software engineering experience, including production experience with GenAI/LLM systems, and hands-on expertise in agentic AI, RAG, evaluation, observability, and prompt engineering. Candidates should have strong Python and Node.js skills, experience with AWS services and production reliability patterns, and authorization to work in Canada plus eligibility for immediate U.S. non-immigrant work authorization.

Skills

Agentic AI
Generative AI
Large Language Models
RAG
Prompt Engineering
Python
Node.js
AWS Bedrock
Amazon Bedrock Agent Core
DynamoDB
OpenSearch
LLM Evaluation
LLM Observability
AWS Lambda
Docker
System Architecture

Benefits

Paid Time Off
Medical Insurance
Dental Insurance
Vision Insurance
401(k)

Visa sponsorship

Not detected in the job text

Keywords

Agentic AI
Generative AI
Large Language Models
Reasoning Loops
Tool Calling
Multi-Agent Orchestration
Retrieval-Augmented Generation
Embeddings
Vector Search
OpenSearch
Re-Ranking
AWS Bedrock
Amazon Bedrock Agent Core
Model Context Protocol
Prompt Engineering
RAGAS
LLM-as-Judge
LangFuse
LangSmith
Python
Node.js
AWS Lambda
DynamoDB
Step Functions
SQS
EventBridge
Docker
Serverless Architecture
Circuit Breakers
Retries and Backoff

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