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Added 21 mins ago
Senior Consultant - Microsoft Sentinel and Defender Engineer
EY
Winnipeg, MB · Toronto, ON · Quebec, QC · Saskatoon, SK · Halifax, NS · St. John's, NL · Saint John, NB · London, ON · Vancouver, BC · Victoria, BC · Edmonton, AB · Ottawa, ON · Dieppe, NB · ON · AB · Waterloo, ON · Calgary, AB
EY is seeking a senior, hands-on Microsoft security engineer to support the design, implementation, and continuous improvement of our Managed Detection and Response (MDR) services. You will…
Added 34 mins ago
Senior AI Infrastructure & Platform Engineer
Experis Canada
Toronto, ON
$90 to $120 CAD / hour
Contract
Our client, a leading organization in the technology and enterprise solutions sector, is seeking a Senior AI Infrastructure & Platform Engineer to join their innovative team. As a Senior AI…
Added 34 mins ago
Senior L3 AI Engineer (M365, Copilot & LLM Platforms)
K&K Global Talent Solutions INC.
Quebec, QC
Full-time
Position: Senior L3 AI Engineer (M365, Copilot & LLM Platforms)
Added 35 mins ago
Senior Data Engineer
Capgemini
Vancouver, BC
Added 50 mins ago
Senior Data Product Engineer
Match Group
Vancouver, BC
$135,000 to $143,000 CAD / year
Full-time
We're looking for a Sr. Data Product Engineer to join our new Match Group Core Data team. This new position is a hybrid role combining the technical expertise of a data engineer with the…
Added 50 mins ago
Senior Network Engineer
Kepler Communications Inc.
Canada
Full-time
Added 50 mins ago
Senior/Lead Engineer - Agentic AI Development
FICO
Canada
Full-time
…that environment the harness (Agent = Model + Harness). As a Senior Harness Engineer you'll independently own whole harness subsystems, set the standards other engineers build to, and be…
Added 50 mins ago
Senior DevOps Engineer
Motorola Solutions
Vancouver, BC · Greater Vancouver Metropolitan Area
Full-time
We are seeking a highly experienced and passionate Senior DevOps Engineer to join our team. In this pivotal role, you will be instrumental in evaluating, consolidating, and designing the…
Added 1 hour ago
Senior Data Product Engineer
Match Group
Vancouver, BC
Full-time
We're looking for a Sr. Data Product Engineer to join our new Match Group Core Data team. This new position is a hybrid role combining the technical expertise of a data engineer with the…
Added 1 hour ago
Python (Ab Initio) Engineer
Citi
Mississauga, ON
Full-time
The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application…
Added 1 hour ago
Intermediate Data Engineer
BMO
Toronto, ON · SCC
Full-time
The Data Engineer is responsible for designing, building, and supporting scalable data solutions that enable analytics, reporting, regulatory, and operational business processes. Working as…
Added 1 hour ago
Development Security Specialist (Industrial Oil & Gas Applications)
Pengcorp Ltd.
Calgary, AB
Full-time
We are seeking a Senior Application Security & DevSecOps Engineer to establish, operationalize, and continuously improve our Secure Software Development Lifecycle (SSDLC) across enterprise,…
Added 1 hour ago
Senior AI Engineer
Tekgence Inc
Toronto, ON
Contract
Added 1 hour ago
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
Full-time
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL
Added 1 hour ago
Senior Data Center Network Engineer-Montreal, Canada
KPG99 INC
Montreal, QC
Contract
We are looking for a Senior Data Center Network Engineer with strong hands-on experience designing, implementing, and troubleshooting large-scale enterprise data center networks. The…
Added 1 hour ago
Senior Business Systems Engineer - Integrations & AI
Lyft
Toronto, ON
Lyft is building the next generation of intelligent agents powered by AI. We're seeking a Senior AI Agentic Engineer to lead this transformation across the enterprise. This is a strategic…
Added 2 hours ago
Senior Cloud Engineer - Terraform, Azure
BDO
Toronto, ON
Full-time
BDO Digital is looking for a replacement Senior Cloud Engineer to join our team. This is enterprise-scale platform solutioning, not single-application DevOps. You will build a platform or…
Added 2 hours ago
Frontend Engineer - UI/UX
RedBranch Executive Search & Recruitment
Toronto, ON · Greater Toronto Area, Canada
$100,000 to $135,000 CAD / year
Full-time
Our client is an exciting AI Start up company and they have an immediate need for a Frontend Engineer. This position will own the decision surface enterprise that senior leaders will act on…
Added 2 hours ago
Mining Engineer in Training II- EN
IAMGOLD Corporation
Gogama, ON
Full-time
We’re actively searching for a Mining Engineer in Training II based in Gogama with a start date to be determined, reporting to the Senior Mine Engineer. In this role, you’ll support mine…
Added 2 hours ago
Mining Technologist- EN
IAMGOLD Corporation
Gogama, ON
Full-time
…team, with a start date to be determined, reporting to the Senior Mining Engineer. This role supports Technical Services by collecting, analyzing, and coordinating operational data on a 7/7…
Added 2 hours ago
Senior Software Engineer, Internal Tools
Tubi - Canada
Toronto, ON
Added 3 hours ago
Software Engineer
NetApp, Inc.
Vancouver, BC
…cloud computing applications development. Collaborates with senior engineers to ensure that internal and external clients' needs are…
Added 3 hours ago
Senior Data Engineer
fgf brands
Toronto, ON · Greater Toronto Area, ON
Other
We are seeking a Senior Data Engineer with deep expertise in designing and delivering scalable, real-time streaming as well as batch data pipelines and solutions using modern data platforms…
Added 3 hours ago
Senior Data Engineer
Ardent SoftSol Inc.
Montreal, QC
Contract
We are seeking an experienced Senior Data Engineer with strong expertise in Snowflake, Databricks, Python, and SQL to design, develop, and support modern cloud-based data platforms. The…
Added 3 hours ago
Principal Software Developer – AI/ML Performance Validation & Systems Testing
Advanced Micro Devices, Inc
Markham, ON
Full-time
We are seeking a Principal Software Engineer to serve as the senior technical leader for ROCm software validation across compute workloads and server-class systems. In this…

FICO

Senior/Lead Engineer - Agentic AI Development

Canada

Job type: Full-time
Posting language: English
Posted: Sep 21, 2026

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Original job description

The Opportunity

Come join our engineering team in a hands-on technical role at the heart of a new discipline: Harness Engineering. As AI coding agents take on more of the software lifecycle, the hard part is no longer writing code - agents generate it faster than humans can review it, so the bottleneck shifts to verification and trust. Harness Engineering exists to break that bottleneck: engineering the environment that steers agents toward correct, maintainable, well-architected output so that quality is enforced by the system, not re-audited by a person on every change. We call that environment the harness (Agent = Model + Harness). As a Senior Harness Engineer you'll independently own whole harness subsystems, set the standards other engineers build to, and be involved in the end-to-end lifecycle of turning raw model capability into production-grade engineering.

What You'll Contribute

Design, build, deploy, and support core components of the harness - the guides, feedback loops, guardrails, and shared context that turn raw model capability into production-grade engineering. This is a hands-on role focused on systems and leverage, not hand-writing application code.
Own and evolve feedforward guides - agent instruction files, reusable skills, architectural rules, reference docs, and codemods - and drive team-wide standardization so agents get it right the first time.
Build feedback sensors - custom linters, static analysis, structural and architecture-fitness tests, verification loops, and LLM-as-judge reviewers - that catch issues automatically before they reach human reviewers.
Own quality gating and release criteria for agent-produced work, defining authority boundaries for what agents may merge unaided and the escalation rules for what must route to a human.
Establish LLM testing infrastructure and evaluation approaches that ensure AI-generated output meets quality and safety thresholds; apply consumer/contract testing (e.g. Pact) where service integration reliability matters.
Run the steering loop - when an agent repeats a mistake, engineer a control so it can't happen again - and treat repository knowledge (docs, specs, context) as the system of record, fighting drift with continuous garbage collection.
Decide where each control runs in the path to production - fast checks pre-commit, more expensive checks post-integration, and continuous sensors that scan for drift outside the change lifecycle - keeping quality as far left as is economical.
Improve observability into agent work and track the measures that matter - cost per merged PR, time-to-merge for agent-assisted PRs, review velocity relative to PR size, defect escape rate, and agent-PR survival rate - using them to decide where to invest next.
Partner with product and platform teams to turn specifications and acceptance criteria into enforceable controls.
Serve as a source of technical expertise and mentor engineers across teams in harness practices and the effective, responsible use of AI tools.

What We're Seeking

Seasoned software engineer with experience in large, complex codebases and a strong foundation in architecture and design; you care deeply about testing and maintainability.
Hands-on experience with AI coding agents (e.g. Claude Code, Codex, or similar) and a well-developed feel for where they succeed and fail.
Proven ability to build engineering tooling across a modern stack - linters and static analysis, CI/CD pipelines, containerized build/test environments, and instrumentation/observability - plus familiarity with agent instruction conventions such as AGENTS.md.
Experience with spec-driven development, context engineering, agent orchestration, fitness functions, and developer-platform work.
A systems mindset - you'd rather fix the environment than fix one output - and the ability to encode "what good looks like" into mechanical, repeatable rules.
Judgement about when to reach for deterministic, computational controls (type checkers, linters, structural/architecture-fitness tests) versus inferential, LLM-based ones (AI code review, LLM-as-judge) - and an understanding of the cost, speed, and reliability trade-offs between them.
Experience owning quality-gating processes and defining release criteria to ensure engineering standards are consistently met.
Working knowledge of the security surface unique to autonomous agents - prompt injection, tool/permission scoping, sandboxed execution, and audit trails for agent actions - and how to design least-privilege guardrails around them.
Experience with consumer/contract testing approaches (e.g. Pact) to validate service integrations across distributed systems.
Excellent communication skills; able to articulate design with architects and drive standards across teams.
Bachelor's/Master's in Computer Science or related disciplines, or relevant experience in software architecture, design, development, and testing.

About US

FICO is a leading analytics and decision management company that empowers businesses and individuals around the world with data-driven insights. Known for pioneering the FICO® Score, a standard in consumer credit risk assessment, FICO combines advanced analytics, machine learning, and sophisticated algorithms to drive smarter, faster decisions across industries. From financial services to retail, insurance, and healthcare, FICO's innovative solutions help organizations make precise decisions, reduce risk, and enhance customer experiences. With a strong commitment to ethical use of AI and data, FICO is dedicated to improving financial access and inclusivity, fostering trust, and driving growth for a digitally evolving world.

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More about this job

Responsibilities

You will design and build the harness environment that steers AI coding agents toward producing high-quality, maintainable, and secure software. This involves creating feedback loops, guardrails, and automated testing infrastructure to ensure agent-generated code meets production standards.

Requirements

The ideal candidate is a seasoned software engineer with extensive experience in complex codebases, architecture, and modern engineering tooling. You must have hands-on experience with AI coding agents and a strong understanding of the trade-offs between deterministic and inferential quality controls.

Skills

Agentic AI
Software Architecture
CI/CD Pipelines
Static Analysis
LLM Testing
System Design
Quality Gating
Observability
Contract Testing
Python
Containerization
Security Guardrails
Technical Mentorship
Spec-driven Development
Code Review Automation

Visa sponsorship

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Keywords

Agentic AI
Harness Engineering
Software Lifecycle
LLM-as-judge
Static Analysis
CI/CD
Pact
Containerization
Observability
Prompt Injection
Least-privilege
Architecture-fitness tests
Codemods
Feedback loops
Quality gating
Release criteria
Technical leadership
System design
Data-driven insights
Machine learning
Algorithms
Analytics
Software development
Engineering standards
Distributed systems

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