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About the Role
This is a high-impact, senior engineering role focused on building production-ready AI systems with significant ownership and minimal oversight. Engineers will make architectural decisions with long-term implications in an environment that values speed and correctness.
Responsibilities
- Design and build production-grade LLM systems (RAG, agents, APIs)
- Architect systems that minimize rework in fast-evolving environments
- Own end-to-end delivery of critical AI features
- Define and implement evaluation frameworks
- Optimize systems for cost, latency, and reliability
- Collaborate across teams where needed
- Provide technical guidance where applicable
Requirements
- Strong backend/software engineering foundation (Python, APIs, system design)
- Proven experience shipping LLM-powered features to production
- Deep expertise in RAG systems (advanced retrieval + evaluation)
- Deep expertise in LLM evaluation methodologies (golden sets, regression testing)
- Deep expertise in prompt engineering at API level
- Deep expertise in agent architectures (ReAct, tool calling, planning loops)
- Strong understanding of trade-offs (cost, latency, scalability)
- Ability to work independently in ambiguous, fast-moving environments
Skills
- Advanced Python
- Backend engineering
- LLM systems (RAG, agents, prompting, evaluation)
- API design
- System architecture
- Docker
- Git
- CI/CD
- Inference systems and scaling
- High ownership and accountability
- Ability to operate in ambiguity
- Strong decision-making and trade-off analysis
- Clear communication with cross-functional teams
- Fine-tuning experience (LoRA, SFT, DPO)
- Inference stack experience (vLLM, TGI, llama.cpp)
- Observability tooling (Langfuse, LangSmith)
Location
- Toronto, ON
Work Type
- Onsite/Hybrid
- Full-Time
Experience Level
- Senior
Education Level
- Bachelor's or master's degree in computer science or a related discipline
Salary/Compensations
- 135K – 170K CAD per year (negotiable)
Benefits
- Comprehensive health and dental coverage for you and your family
- Competitive paid time off and flexible leave policies
- Retirement savings programs and employer contributions
- Dedicated learning and development budget
- Remote and hybrid work options
- Equipment allowances
- Internet reimbursements
- Business travel coverage
- Employee stock options (ESOP), where applicable
About the Company
- Fulfillment IQ is a supply chain engineering and transformation company that helps brands, retailers, and 3PLs design, build, and scale high-performance logistics operations.
- We work at the intersection of strategy, operations, and technology where we solve complex, real-world problems across warehouse design, automation, order management, transportation, and end-to-end supply chain execution.
- Our teams combine deep domain expertise with strong technical capability, delivering outcomes through consulting, systems implementation, and proprietary platforms that accelerate time-to-value and reduce delivery risk.
- If you enjoy working in complex environments, partnering closely with clients, and seeing your work make a tangible impact on how global commerce moves, this is the place where your skills and judgment truly come to life.
Equal Opportunity
- Fulfillment IQ is a people-first company built on trust, collaboration, and ownership.
- We are proud to be an equal opportunity employer and are committed to building a diverse, inclusive, and high-performing workplace.
- We consider all qualified applicants without regard to any ground protected under the Ontario Human Rights Code, including race, ancestry, place of origin, colour, ethnic origin, citizenship, creed, sex, sexual orientation, gender identity, gender expression, age, marital status, family status, or disability.