Principal Agentic Engineer – Back-end
Apply Digital
full-time
Posted on:
Location Type: Hybrid
Location: Toronto • Canada
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Job Level
About the role
- Lead the design and development of scalable, secure, and high-performance backend systems using Python and modern cloud-native patterns.
- Apply spec-driven development practices to ensure clarity, quality, and predictable delivery.
- Organizing, distributing and translating backlog requirements from Product, UX and other disciplines, into detailed spec driven requirements for Agents to implement.
- Coordinate teams of coding agents to deliver engineering requirements.
- Design and implement RESTful APIs to support frontend, mobile, and third-party integrations.
- Architect and deliver AI-powered backend solutions, including: Vector stores and Retrieval-Augmented Generation (RAG) pipelines, integration with LLMs (e.g., Gemini, Claude, GPT-4/5), and use of AI coding agents and developer copilots to improve delivery velocity.
- Develop and maintain systems using Google Cloud Platform (GCP), with hands-on experience in, Vertex AI, Google Gen AI APIs.
- Leverage Agent Development Kits (ADKs) (e.g., Google ADK) to design and implement intelligent agent-based systems.
- Ensure systems are observable, reliable, and debuggable in production environments.
- Collaborate with engineers to design well-architected, maintainable solutions aligned with business goals.
- Mentor and guide engineers, fostering technical excellence and continuous learning.
- Partner with Project Managers and cross-functional teams to manage delivery risks and timelines.
- Communicate complex technical concepts clearly to both technical and non-technical stakeholders, including clients.
Requirements
- Strong experience with Python 3 for backend development.
- Experience designing and consuming RESTful APIs.
- Proven experience with spec-driven development.
- Hands-on experience using AI coding agents (e.g., Copilot, Claude Code).
- Strong prompt engineering skills.
- Experience working with LLMs (e.g., Gemini 3, Claude Opus, GPT-4.x/5.x).
- Experience implementing vector stores and RAG architectures.
- Experience with Agent Development Kits (e.g., Google ADK).
- Strong experience with Google Cloud Platform (GCP).
- Hands-on experience with Vertex AI and Google Gen AI APIs.
- Experience with relational and non-relational databases.
- Experience with Git and CI/CD pipelines.
- Strong system design fundamentals, including queues, caching strategies, database schema design, and API design. You know how to build systems that survive and scale in production.
- Experience designing AI agents, agent task planning, and reasoning patterns.
- Agent observability and debugging experience.
- Ability to clearly articulate goals, constraints, and context for agentic systems; reason through edge cases and failure modes; and iteratively refine agent behavior based on observed outcomes.
- Comfort understanding and integrating across the full stack; experience with TypeScript and modern JavaScript is highly beneficial.
- Excellent English communication skills (written and verbal), with the ability to explain complex technical concepts to both technical and non-technical audiences.
- Excellent command of the English language to guide coding agents to complete required coding tasks.
- Experience working effectively with fully remote, distributed teams.
- Experience working in a consultancy, agency, or professional services firm.
- Ability to thrive in a flexible, fast-paced delivery environment.
Benefits
- Great projects: Broaden your skills on a range of engaging projects with international brands that have a global impact.
- An inclusive and safe environment: We’re truly committed to building a culture where you are celebrated and everyone feels welcome and safe.
- Learning opportunities: We offer generous training budgets, including partner tech certifications, custom learning plans, workshops, mentorship, and peer support.
- Generous vacation policy: Work-life balance is key to our team’s success, so we offer flexible personal time off (PTO); allowing ample time away from work to promote overall well-being.
- Customizable benefits: Tailor your extended health and dental plan to your needs, priorities, and preferences.
- Flexible work arrangements: We work in a variety of ways, from remote, to in-office, to a blend of both.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Python 3RESTful APIsspec-driven developmentAI coding agentsprompt engineeringLLMsvector storesRAG architecturesAgent Development KitsGoogle Cloud Platform
Soft Skills
communicationmentoringcollaborationproblem-solvingarticulating goalsreasoning through edge casesiterative refinementworking with remote teamsflexibilityadaptability