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Added 2 months ago
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Senior Software Developer (12 months)
CIRA
Ottawa, ON
- Temporary
…problems as a team and learning from your colleagues. Beyond your technical skills, you actively share your knowledge, mentor those around you and champion initiatives to improve our…
Added 3 months ago
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Manager, Software Engineering
Emburse
Toronto, ON
- Full-time
2+ years of Manager or Lead position experience
Added 2 months ago
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Java Full Stack Developer - VP
Citi
Mississauga, ON
- Full-time
The Applications Development Technology Lead Analyst is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination…
Added 5 months ago
M
Manager, Software Engineering - Identity Platform
Marqeta
Remote, Canada
- Full-time
- Remote
As Marqeta's Manager, Software Engineering within our Risk, Fraud and Disputes pod, you will lead the design, development, and execution of our Identity Platform. You will be responsible…
Added 4 months ago
S
Senior Mobile Engineer, Agentic Payments
Snaplii
Etobicoke, Ontario
- Full-time
…You will proactively seek clarification on requirements and lead discussions on technical solutions to ensure a shared…
Added 4 months ago
C
Full Stack Java Developer Lead
CGI
Toronto, Ontario
- Full-time
We are looking for a Senior Full Stack Developer with deep expertise in Java, cloud technologies, and AI, along with strong experience in the Property & Casualty (P&C) insurance domain. You…
Added 2 months ago
Developer, SAP Integration
Aecon
Toronto, ON
Integrity. We lead by example, with humility and courage.
Added 4 months ago
S&
Lead Full Stack Developer
Saatchi & Saatchi Canada
Canada
- Full-time
Saatchi & Saatchi is seeking a Lead Full Stack Developer for an innovative AI platform initiative.
Added 5 months ago
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AI Full Stack Developer
Avanade
Toronto, Ontario
- Full-time
Troubleshoot and resolve technical challenges as they arise.
Added 4 months ago
QA
Senior Data Engineer I - QuantumBlack, AI by McKinsey
QuantumBlack, AI by McKinsey
Toronto, Ontario
- Full-time
You will own and deliver technical workstreams, designing machine learning, agentic, and autonomous AI systems. You'll lead the integration of machine learning, Generative AI capabilities…
Added 3 months ago
S1
Forward Deployed Engineer
Signal 1
Toronto, ON
- Full-time
Lead the deployment of Signal 1's platform and solutions across multiple health systems
Added 3 months ago
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AVP, Lead AI Engineer
Chubb
Toronto, ON
- Full-time
Platform capabilities for extending AI enablement to human-lead operations in areas like QA, Training | Operations for faster and efficient production and introduce efficiencies in…
Added 1 month ago
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Java Developer
Genpact
Montreal, QC
- Full-time
Can work within an Agile team to ensure that all key technical requirements are identified, estimated, designed, implemented, and tested.
Added 1 month ago
JG
Sr. Java Developer (FULL STACK)
J&M Group
Calgary, AB
- Contract
Lead the design and implementation of scalable microservices architecture to enhance system performance and reliability
Added 1 month ago
C
Gen AI Python Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
…Gen AI solutions. As a developer, you will leverage your deep technical knowledge to drive the creation of high-quality software products. You will also be expected to share your technical…
Added 4 months ago
OB
Test Automation Architect
O2E Brands
Vancouver, British Columbia · Greater Vancouver Metropolitan Area
- Full-time
…Vancouver (also open to Kansas City). This role serves as the technical visionary responsible for designing, scaling, and maintaining robust automated testing frameworks, increasingly…
Added 3 months ago
V
Engineering Lead, Quality
Vancity
Toronto, ON · Vancouver, BC
- Full-time
As a Engineering Lead, Quality, you will play a senior technical role responsible for ensuring the quality, reliability, and performance of member-facing platforms through hands-on…
Added 3 months ago
R
Staff Software Engineer
RBGlobal
Burnaby, BC
- Full-time
…learning, fostering an environment where diverse perspectives lead to groundbreaking solutions. Team members are empowered to share ideas and experiment across teams in all aspects of the…
Added 1 month ago
TI
Full Stack Java Developer
Themesoft Inc.
Calgary, AB
- Contract
Lead the design and implementation of scalable microservices architecture to enhance system performance and reliability
Added 5 months ago
C
Backend Java Developer
CIBC
Toronto, Ontario
- Full-time
…platforms with a variety of system integration and patterns. As a Java/J2EE Developer, you first need to be an expert programmer. You will lead development and implementation of solutions…
Added 3 months ago
A
Senior Solutions Consultant - Open Data Platform
Acceldata
Kitchener, ON
- Full-time
You'll be the principal technical owner of ODP (open data platform) deployments - responsible not just for standing up the platform, but for guiding a customer's infrastructure, security…
Added 2 months ago
K
Senior Software Engineer, Payments
Kindsight
Canada
- Full-time
…Engineer will help shape the overall system architecture and technical direction, you will be expected to independently take a Payments problem or capability, design the solution, own the…
Added 1 month ago
A
Custom Application Development Lead
Accenture
Montreal, QC
- Full-time
YOU ARE: A Custom Application Development Lead with strong experience leading the design, development and delivery of modern enterprise applications and Enterprise Content Management (ECM)…
Added 5 months ago
T
Software Developer - Android (Canada)
TextNow
Canada
- Full-time
We're hiring Members of Technical Staff across multiple levels (intermediate/senior/staff+). Whether you're an experienced developer looking to lead complex systems, or an early-career…
Added 3 months ago
CI
Lead Engineer, Total Fund Management Financing, Public Markets Technology
CPP Investments | Investissements RPC
Toronto, ON
- Full-time
As a Lead Software Engineer, Total Fund Management, Financing, you will provide hands-on technical leadership for the design, development and delivery of modern, cloud-native applications…

Lead Full Stack Developer

Canada

Compensation: The salary range for this position is $130,000–$150,000 per year, based on experience, skills, and relevant certifications. · Full-time

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Job details

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
Posting language: English
Posted: Jun 5, 2026

Original job 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 inquiries@publicisna.com.

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More about this job

Responsibilities

Own the technical direction across the platform's tiers and translate product intent into a credible technical plan. Lead architecture and design reviews while mentoring mid-level and senior engineers.

Requirements

Candidates should have 8+ years in software engineering with experience in leading production systems. Strong backend and frontend skills are required, along with a solid understanding of cloud architecture and API design.

Skills

Full Stack Development
React
Spring Boot
FastAPI
Cloud Architecture
API Design
Distributed Systems
Kubernetes
CI/CD
AI Systems
Agile Methodologies
Mentorship
Technical Leadership
Database Migration
Code Review
Integration Architecture

Benefits

Medical
Dental
Vision Care
Psychological Services
Paramedical Services
Disability Insurance
Fertility Support
Gender-Affirming Care
Parental Leave Top Up
Gym Membership
Financial Planning

Visa sponsorship

Not detected in the job text

Keywords

Full Stack Developer
Software Engineering
Production Systems
React
Spring Boot
FastAPI
Cloud Architecture
GCP
Kubernetes
CI/CD
AI
LLM
Agile
API Design
Distributed Systems
Mentorship
Technical Leadership
Database Migration
Code Review
Integration Architecture
Event-Driven Architecture
Domain-Driven Design
Terraform
Kustomize
Publicis Groupe
Advertising
Creative
Data
Media
Technology

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