Lead Full Stack Developer

Publicis Groupe

. Own the technical direction across frontend, backend, agentic/AI services, data, and integrations .

Posted 11/2/2026full-timeToronto • CanadaSenior💰 CA$130,000 - CA$150,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in software engineering with a focus on leading the technical direction across multi-service platforms, integrating AI solutions, and ensuring robust architectural practices. Proficient in backend and frontend technologies, cloud architecture, and API design, with a strong emphasis on mentoring and collaboration.

Highest-signal resume keywords

8+ Years Software Engineering ExperienceStrong Backend Depth in Java/Spring Boot, Python/FastAPI, Node, Go, or .NETSolid Frontend Literacy in React/TypeScriptDeep Understanding of API Design and Integration PatternsExperience with Containerization and Kubernetes

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringAPI DesignIntegration PatternsCloud ArchitectureContainerizationKubernetesAgile Delivery ModelsAI/LLM SystemsMulti-Service PlatformsEvent-Driven Architectures

Soft Skills

Excellent Communication SkillsMentoringCollaboration

Tools & Technologies

Java/Spring BootPython/FastAPINodeGo.NETReactTypeScriptTerraformKustomizeGoogle ADK

Industry Keywords

Regulated EnvironmentsPrivacy-Sensitive EnvironmentsDomain-Driven DesignContract-First Integration PatternsInternal Developer Experience

Tech Stack

Tools & technologies

CloudDistributed SystemsGoogle Cloud PlatformJavaKubernetesNode.jsPythonReactSpringSpring BootSpringBootTerraformTypeScriptGo.NET

About the role

Key responsibilities & impact

Own the technical direction across frontend, backend, agentic/AI services, data, and integrations
Maintain the shared architectural model of the multi-tier platform
Translate product intent into credible technical plans with the Senior Technical PM and Program Director
Lead architecture and design reviews and write architecture decision records when needed
Establish vendor-neutral technical patterns
Stay hands-on in the code, especially across tier boundaries
Review code across the stack for clarity, testability, security, and operability
Mentor mid-level and senior engineers through technical decisions, on-call experiences, and difficult code reviews
Partner with the Platform Engineer on capacity, scaling, observability, incident response, and application reliability
Drive API-first and event-driven integration architecture with internal and external systems
Ensure identity, authorization, data protection, and auditability are built into integrations
Champion the LLM/agent layer, including orchestration, tool/plugin design, prompt and evaluation loops, and provider abstraction
Build redundancy through pairing, documentation, and rotating ownership

Requirements

What you’ll need

8+ years in software engineering, with meaningful time as a hands-on lead, staff engineer, or solutions architect on production systems
Proven experience designing and delivering complex, multi-service platforms
Strong backend depth in at least one modern stack: Java/Spring Boot, Python/FastAPI, Node, Go, or .NET
Ability to ramp on other backend stacks
Solid frontend literacy, including modern React/TypeScript, state management, authentication, and performance
Strong cloud architecture background, preferably GCP; willingness to deepen cloud expertise
Deep understanding of API design, integration patterns, distributed systems, and related failure modes
Experience with containerization, Kubernetes, and modern CI/CD
Real production experience with AI/LLM systems, including agents, RAG, evaluation, and tool integration, or a strong demonstrable plan for getting there
Comfortable working within Agile delivery models such as Scrum or Kanban
Excellent communication skills
Valid Canadian work authorization of at least 12 months
Production experience with Google ADK, LangGraph, LlamaIndex, or comparable agent frameworks is an asset
Experience with event-driven architectures, domain-driven design, and contract-first integration patterns is an asset
Background in regulated or privacy-sensitive environments is an asset
Experience supporting multiple products or clients on a shared platform is an asset
Comfort with Terraform, Kustomize, or other IaC tooling is an asset
Track record contributing to internal developer experience is an asset

Benefits

Comp & perks

Up to 3 weeks vacation
Additional paid closure between Christmas and New Year's
Extended long weekends for provincial holidays, including both Monday and Friday
10 personal days per year
Medical, dental, and vision care
Psychological and paramedical services
Disability insurance
Fertility support and gender-affirming care
Dedicated internal guidance programs for employees navigating cancer, fertility treatments, or gender transition
100% salary top up for the first 6 weeks of parental leave once approved for Employment Insurance
Defined Contribution Pension Plan with employee contributions matched up to 5% after completing one year
Corporate membership rates at Good Life Fitness
Free access to a financial planner
Remote work
After one year, remote work for up to 6 weeks per year from any of the company’s 50+ global offices through the Work Your World program