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Added 3 months ago
Senior Technical Architect - DevSecOps & IT Service Delivery (Defence / NC2SS)
ADGA Group Consultants Inc
Ottawa, Ontario
$130,000 to $150,000 CAD / year
Full-time
Lead the implementation of a DevSecOps adoption strategy using GitLab and Azure DevOps
Added 3 months ago
Senior Product Engineer I - PHP
Docebo
Remote, Canada
$102,800 to $137,000 CAD / year
Full-time · Remote
Technical Versatility: You bring proficiency in PHP. Any experience with other languages like Java, Python, or JavaScript, is also valued but you are willing to work with PHP.
Added 9 days ago
Solutions Architect - Wealth Management
Scotiabank
Toronto, ON
Architectural Leadership: Lead cross-functional architectural discussions, driving strategic decisions and solutions across multiple teams and initiatives.
Added 3 months ago
Senior Software Engineer - Professional Services
Trackunit
London, Ontario
Full-time
…the kind of high-quality engineering that makes Trackunit’s developer experience a genuine competitive advantage for our…
Added 3 months ago
Lead Full Stack Developer
Publicis Groupe Holdings B.V
Toronto, Ontario
Full-time
Saatchi & Saatchi is seeking a Lead Full Stack Developer for an innovative AI platform initiative.You have 8+ years building production software systems and at least a few years leading or…
Added 18 days ago
Staff Software Engineer
Fivetran
Toronto, ON
…correctness, and large-scale distributed systems. You will lead the design and evolution of connector capabilities, investigate complex replication behaviors, and help shape the technical…
Added 10 days ago
Software Engineer, Global Payments Technology
Scotiabank
Toronto, ON
Technical understanding – as a standard Software Engineer there will be expectations that you are able to lead technical discussions, challenge design and strategy
Added 10 days ago
QA Automation Engineer- Global Payments Engineering
Scotiabank
Toronto, ON
…software programs. Apart from testing, you are required to lead the work on continuous improvements of automating regression testing package for our bank application, you should also be…
Added 1 month ago
Staff Software Engineer - Capital One Travel Tech - Full-stack
Capital One
Toronto, Ontario
Full-time
Act as a tech lead developer owning technical design and development of cross-functional, multi-platform, fault tolerant application systems
Added 21 days ago
Staff Software Engineer - Capital One Travel Tech - Full-stack
Capital One
Toronto, ON
Full-time
Act as a tech lead developer owning technical design and development of cross-functional, multi-platform, fault tolerant application systems
Added 3 months ago
Game Mathematician
Partyhat
Remote, Canada
Full-time · Remote
Java Logic Implementation: Write clean, efficient, and robust Java code to build out math engines, game logic components, and high-fidelity simulation frameworks.
Added 1 month ago
Senior Software Developer – AI‑Enablement
General Motors
Remote, Canada
Full-time · Remote
As a Senior Software Developer, you will build the software that powers GM’s virtual development environments, SIL workflows, and AI‑enhanced simulation capabilities. You bring strengths in…
Added 3 months ago
Solution Architect, Power Platform & D365
MNP
Burlington, Ontario · Ottawa, Ontario · Toronto, Ontario · Ontario
Full-time
Lead and enable team members, in addition to being a top individual performer
Added 3 months ago
Distinguished SW Systems Engineer (10343)
Extreme Networks
Toronto, ON
Full-time
Title of position: Innovation Lead - Office of the CTO | WiFi
Added 15 days ago
Software Engineer
Scotiabank
Toronto, ON
Lead technical design discussions and drive architectural decisions for data management solutions
Added 15 days ago
Senior Data Software Engineer
Scotiabank
Toronto, ON
As a Senior Software Engineer on Scotiabank’s Data & AI Technology team, you will lead the design, development and scaling of our enterprise data catalog and data management solutions…
Added 3 months ago
Software Developer in Test (Contract) -
CoreFactor Inc.
North York, Ontario
Contract
CoreFactor is searching for a Software Developer in Test (SDET) on a contract basis for a client in the GTA.
Added 3 months ago
Advanced Engineer, Product Engagement
Invesco Ltd.
Charlottetown, Prince Edward Island
Full-time
The primary role of this position will be to lead the Invesco technology team’s effort use innovative technologies to enable product and client reporting. The vision is to utilize…
Added 3 months ago
Principal Software Engineer - Distributed Systems
Microsoft
Vancouver, British Columbia
Full-time
Collaborates with appropriate stakeholders (e.g., project manager, technical lead) to align on user requirements for a scenario. Leverages a variety of feedback channels to incorporate…
Added 3 months ago
Technical Support Engineer
Sentry
Remote, Canada
$100,000 to $125,000 CAD / year
Full-time · Remote
…Discord, and our internal systems, while acting as the Technical Lead for our Agentic Ops. You ensure that when a developer asks a complex question, our systems have the right context and a…
Added 3 months ago
Apps Development Sr Manager - Vice President
Citi
Remote, Canada
Full-time · Remote
The Senior Technology Lead must be experienced hands-on engineer who is passionate about solving business, customer, and technology problems through innovation and perseverance. Responsible…
Added 3 months ago
Advanced Quality Engineer
Invesco Ltd.
Charlottetown, Prince Edward Island
Full-time
Lead risk assessments to identify critical testing areas and define appropriate testing depth.
Added 17 days ago
Software Engineer II, Android
Pinterest
Toronto, Ontario
Contribute to and lead each step of the product development process, from ideation to implementation to release; from rapidly prototyping, running A/B tests, to architecting and building…
Added 16 days ago
Senior Manager, Data Engineering
Scotiabank
Toronto, ON
Ability to lead software development teams on tight deadlines
Added 27 days ago
Senior Software Developer - Test Automation
General Motors
Remote, Canada
Full-time · Remote
Strong programming skills in Python, other languages such as Java, C#, or JavaScript are a bonus.

Publicis Groupe Holdings B.V

Lead Full Stack Developer

111 Queen Street East, Toronto, ON, M5C 1S2, Canada

Pay: Compensation: The salary range for this position is $130,000–$150,000 per year, based on experience, skills, and relevant certifications.
Job type: Full-time
Apply by: Jul 6, 2027
Posting language: English
Posted: Jun 16, 2026

Apply About employer

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Original job description

Company Description

Saatchi & Saatchi is an advertising agency with the belief that creativity, data, media and technology should all work together, and we use that to influence human behavior and drive success for clients. S&S is one of the world's largest agency networks with 114 offices and more than 6000 employees globally.

Here in our Toronto office we work with some of the countries most valued brands including Toyota, Buckley's, and Children's Advil, as well as several under the Mondelez banner (Crispers, Oreo, and Chips Ahoy just to name a few). We’re an award winning agency in both creativity and effectiveness, so it’s really important for us here to convert that innovation and the great ideas into real tangible business results for the organization.

Overview

Saatchi & Saatchi is seeking a Lead Full Stack Developer for an innovative AI platform initiative.You have 8+ years building production software systems and at least a few years leading or anchoring a team technically. You are a hands-on builder and you hold the architectural picture of a multi-tier platform - React frontend, Spring Boot backend, FastAPI agentic services, agent SDKs on top of LLM providers. You are equally comfortable reviewing a database migration, debugging a prod incident, mentoring a senior engineer, or sitting in a client architecture conversation. You thrive at the intersection of architecture, engineering, and program reality.

Responsibilities

Own the technical direction across the platform's tiers - frontend, backend, agentic/AI services, data, and integrations - and hold the shared mental model of how the system actually fits together.
Pair closely with the Senior Technical PM and Program Director to translate product intent into a credible technical plan, and to surface what is genuinely hard vs. what is just unfamiliar.
Lead architecture and design reviews, write the deciding ADR when needed, and keep a small set of vendor-neutral patterns the team can lean on instead of a sprawl of frameworks.
Stay hands-on in the code - pick up meaningful slices of work, especially across tier boundaries (e.g. backend ↔ agentic, frontend ↔ auth/RBAC, infra-aware app changes).
Be a first-class code reviewer across the stack: you set the bar for clarity, testability, security, and operability, and you raise the team's bar by reviewing thoughtfully.
Mentor mid-level and senior engineers; coach them through technical decisions, on-call experiences, and difficult code reviews.
Partner with the Platform Engineer on production reliability - capacity, scaling, observability, and incident response - and own application-side reliability concerns.
Drive integration architecture with internal and external systems using API-first and event-driven patterns; ensure identity, authorization, data protection, and auditability are built in, not bolted on.
Champion the LLM/agent layer - agent orchestration, tool/plugin design, prompt and evaluation loops, provider abstraction (e.g. Vertex AI, Claude on Vertex, OpenAI) - and keep us out of vendor lock-in we cannot pay for.
Build redundancy on yourself - pair, document, rotate ownership, and ensure no critical system has exactly one person who understands it.

Qualifications

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 - not just one service or one tier.
Strong backend depth in at least one modern stack (Java/Spring Boot, Python/FastAPI, Node, Go, .NET); able to ramp on the others.
Solid frontend literacy - comfortable reading and reviewing modern React/TypeScript code and reasoning about state management, auth, and performance.
Strong cloud architecture background, preferably GCP (we run primarily on GKE); willing to deepen wherever the platform takes us.
Deep understanding of API design, integration patterns, distributed systems, and the failure modes that come with them.
Experience with containerization, Kubernetes, and modern CI/CD; you do not need to be a DevOps specialist, but you must operate well in that world.
Real production experience with AI / LLM systems - agents, RAG, evaluation, tool integration - or a strong, demonstrable plan for getting there.
Comfortable working within Agile delivery models (Scrum, Kanban, or whatever variant actually ships).
Excellent communication: you can explain a complex architecture to a non-technical executive and disagree with a senior engineer respectfully and with evidence.

Required Soft Skills

Hands-on bias - you reach for the code, the logs, and the diagram before you reach for the meeting invite.
Calm, decisive judgment when there is no obviously right answer.
Strong written communication - you can write a one-page architecture rationale that future-you will still understand.
Generous mentorship instinct - you make the people around you better, on purpose.
Comfortable with ambiguity and willing to make reversible decisions quickly while flagging the irreversible ones for broader input.
Pragmatic about technology choices - you optimize for the team's ability to operate the system, not for personal stack preferences.
Honest about what you do and do not know; willing to say 'I'll find out' and then actually find out.

Nice to Have

Prior experience working inside Publicis Groupe or another large holding-company agency network.
Production experience with Google ADK, LangGraph, LlamaIndex, or comparable agent frameworks.
Experience with event-driven architectures, domain-driven design, and contract-first integration patterns.
Background in regulated or privacy-sensitive environments (identity, healthcare, financial, marketing-compliance).
Experience supporting multiple products or clients on a shared platform (multi-tenant, multi-brand, white-label).
Comfort with Terraform, Kustomize, or other IaC tooling at a 'can read and improve' level.
Track record contributing to internal developer experience - patterns, scaffolds, golden paths.

Additional Information

Location & Eligibility: Candidates must be based in Canada, with valid Canadian work authorization of at least 12 months.

Hybrid Work: This role is remote. If you are GTA-based, the team meets once a month at our Toronto office (111 Queen St. E, Suite 200, Toronto, ON M5C 1S2).

Time Off:

Up to 3 weeks vacation, with additional paid closure between Christmas and New Year's

Extended long weekends for provincial holidays - we give you both the Monday and Friday so you get a full 4-day break

10 personal days per year

Flexibility & Global Mobility: After completing one year, work remotely for up to 6 weeks per year from any of our 50+ global offices through our Work Your World program.

Benefits: Comprehensive group coverage including:

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

Parental Leave Top up: A 100% salary top up program once approved for Employment Insurance for the first 6 weeks of your parental Leave.

Defined Contribution Pension Plan: Employees have the option to sign up to voluntarily contribute to a DCPP where Saatchi will match the employee contributions up to 5% after completing one year.

Gym Membership: Corporate Membership rates at Good Life Fitness

Free access to a financial planner & more…

Compensation: The salary range for this position is $130,000–$150,000 per year, based on experience, skills, and relevant certifications. We believe in pay transparency and are committed to offering competitive, market-aligned compensation.

We use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications or analyzing resumes. These tools assist our recruitment team but never replace human decision-making. We believe in a human-first approach, where your experience and potential are recognized by people.

Saatchi & Saatchi is committed to building a diverse workforce representative of our community. We encourage and are pleased to consider all qualified candidates, without regard to race, colour, citizenship, religion, sex, marital / family status, sexual orientation, gender identity, aboriginal status, age, disability or persons who may require an accommodation, to apply. If you require a specific accommodation please contact Human Resources at 416-925-7733 or by email at [email protected].

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More about this job

Responsibilities

Lead the technical direction and architecture of a multi-tier AI platform, overseeing frontend, backend, and agentic services. Mentor senior engineers and partner with product management to translate business intent into scalable technical plans.

Requirements

Requires 8+ years of software engineering experience with a proven track record of leading production systems and designing complex multi-service platforms. Must have deep expertise in modern backend stacks, cloud architecture (preferably GCP), and production experience with AI/LLM systems.

Skills

React
TypeScript
Spring Boot
FastAPI
Java
Python
Google Cloud Platform
Kubernetes
LLM Orchestration
API Design
Distributed Systems
CI/CD
RAG
System Architecture
Mentorship
Agile

Benefits

Medical Care
Dental Care
Vision Care
Psychological Services
Paramedical Services
Disability Insurance
Fertility Support
Gender-affirming Care
Parental Leave Top up
Gym Membership
Financial Planner Access
Paid Vacation
Paid Holiday Closures

Visa sponsorship

Not detected in the job text

Keywords

React
TypeScript
Spring Boot
FastAPI
Java
Python
GCP
GKE
Kubernetes
LLM
RAG
Vertex AI
Claude
OpenAI
LangGraph
LlamaIndex
API-first
Event-driven Architecture
Domain-driven Design
Terraform
Kustomize
CI/CD
RBAC
Distributed Systems
Agile
Scrum
Kanban
Multi-tenant
Software Architecture
Agentic Services

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