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Pebl

Senior Software Engineer, AI

Pebl

. Design, build, and ship full-stack features for Alfie, owning work from data model and API layer through the user experience.

Posted 10/26/2026full-timeToronto • CanadaSenior💰 CA$122,835 - CA$180,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in full-stack software engineering, with a strong focus on backend and frontend development using TypeScript, Python, and React. Proficient in building and deploying AI-powered systems, including conversational interfaces, while ensuring code quality and system observability.

Highest-signal resume keywords
Full-Stack Software EngineeringTypeScript or Python ProficiencyReact/TypeScript Frontend DevelopmentLLM-Powered Product ExperienceKubernetes Deployment

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Full-Stack DevelopmentTypeScriptPythonPostgresReactLLM Design PatternsPrompt EngineeringKubernetesAWSSystem Design
Soft Skills
CollaborationMentoringProblem-SolvingCommunication
Tools & Technologies
AWSKubernetesPostgresReactTypeScript
Industry Keywords
AI SystemsConversational InterfacesMicroservicesObservabilityAgentic Systems

Tech Stack

Tools & technologies
AWSKubernetesMicroservicesPostgresPythonReactTypeScript

About the role

Key responsibilities & impact
  • Design, build, and ship full-stack features for Alfie, owning work from data model and API layer through the user experience.
  • Build and operate backend microservices in TypeScript or Python, Postgres, and AWS on Kubernetes.
  • Build frontend experiences in React/TypeScript, including conversational and streaming interfaces.
  • Apply prompt design, tool/function calling, multi-step agent reasoning, and evaluation to LLM-based and agentic systems.
  • Design recovery paths and human-in-the-loop handoffs for AI uncertainty and failures.
  • Prototype new interaction patterns as models and agent capabilities evolve.
  • Build observability and evaluation into AI systems and improve them using production evidence.
  • Troubleshoot backend, frontend, and AI-specific production issues.
  • Write clean, well-tested, maintainable code; mentor junior engineers; contribute to design and code reviews.
  • Collaborate with product managers, designers, and engineers to deliver features end to end.
  • Report to the Engineering Manager, with day-to-day work led by the Staff Software Engineer.

Requirements

What you’ll need
  • 7+ years of professional software engineering experience, full-stack, with real depth on both the backend and the frontend.
  • Proficient in TypeScript or Python.
  • Strong experience building database-backed services using Postgres or a similar relational database, including schema design, query writing, and performance considerations.
  • Strong command of modern frontend development with React/TypeScript.
  • 1+ years of hands-on experience building LLM-powered or agentic products.
  • Experience shipping a conversational AI interface used by real end users in production.
  • Solid understanding of LLM design patterns, prompt engineering, and observability/instrumentation for agentic systems.
  • Experience building and deploying services in a containerized, Kubernetes-based environment or comparable orchestration.
  • Comfort with AWS.
  • Solid computer science fundamentals and system design skills.
  • Track record of building products beyond standard CRUD applications and dashboards.
  • Comfort working collaboratively in a fast-paced environment.
  • Must be able to commit to in-office collaboration Monday through Wednesday at the downtown Toronto office and live within commuting distance.

Benefits

Comp & perks
  • Flexible Time Off – Take the time you need to recharge.
  • Parental Leave – Support for growing families.
  • Health and Dental Insurance – Where applicable, to cover you and your loved ones.
  • Retirement Savings + Employee Incentive Plan – Plan for the future while sharing our success.
  • Equity
  • Hybrid work arrangement with in-office collaboration Monday through Wednesday