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Added 14 mins ago
Maintenance Planner (Full-time Permanent)
Manufacturing Job Site
ON · Kenora, ON
Full-time
…activities through the Computerized Maintenance Management System (CMMS). The Maintenance Planner will play a key role in selecting, implementing, and maintaining a scalable CMMS that…
Added 30 mins ago
Senior Data Platform Engineer - Zonda - Toronto, Ontario
CoStar
Toronto, ON
$140,000 to $170,000 CAD / year
Full-time
…responsibilities sit with Database Administration, with Data Platform Engineering providing the automation, deployment, and infrastructure capabilities around the database…
Added 30 mins ago
Stagiaire développeur IA & automatisation
Ericsson
Montreal, QC
Full-time
Added 30 mins ago
Maintenance Technician - Controls & Automation
Eaton Corporation
Milton, ON
Full-time
…the material management automated storage and material-flow system, fiber laser, punching/shearing, panel-bending and robotic/pallet-handling equipment. The technician responds to…
Added 59 mins ago
Director of Product Design
McAfee
ON · Ontario, Canada
Full-time
This leader will partner closely with Product, Engineering, Research, Content Design, and executive stakeholders to shape UX strategy, strengthen design operations, and integrate design…
Added 1 hour ago
Manager, Software Development
CNN
Ottawa, ON · Kanata, ON
Full-time
CNN Digital Commerce is seeking a Software Engineering Manager to lead a talented and innovative engineering team building the next generation of web applications and commerce products.…
Added 1 hour ago
Senior Software Developer, Cloud and Platform
Archipelago
Victoria, BC
Full-time
Experience in more than one engineering organization
Added 1 hour ago
Senior Specialist, Quality Improvement
Ontario Health | Santé Ontario
Toronto, ON
Full-time
Understands how to navigate multiple BI platforms and health system performance reporting products (e.g., Quality Standards eReports, Qu
Added 1 hour ago
Senior Software Developer
CNN
Ottawa, ON · Kanata, ON
Full-time
Work closely with the engineering and platforms team to build and enhance commerce products such as the CNN Underscored.
Added 1 hour ago
Superviseur (e) du Support Client / Customer Support Supervisor
Progitek / Dentitek
Quebec, QC
Full-time
Added 1 hour ago
Bus Systems Analyst V
SPECTRAFORCE
Toronto, ON
$75 to $79 CAD / hour
Contract
MUST-HAVE Hard Skills:Experience implementing, integrating, or supporting QRM or comparable Treasury / ALM platforms OR Proven track record of delivering large-scale enterprise system…
Added 1 hour ago
Controls Systems Technician
Johnson Controls
AB
Full-time
Performs assigned system commissioning using Johnson Controls configuration and commissioning tools. Troubleshoots and resolves basic HVAC mechanical, electrical, and controls problems.…
Added 1 hour ago
Platform Team Lead
nesto
Canada
Full-time
We strive to implement the best emerging DevOps practices, such as GitOps, Internal Developer Platforms, and Infrastructure as Code. We believe that DevOps goes beyond the mere automation…
Added 1 hour ago
Staff Software Engineer, Core Applications
Solink
Remote, Canada
$138,445 to $173,056 USD / year
Full-time · Remote
Demonstrated ownership of end-to-end system architecture across web, mobile, and API platforms, including establishing documentation practices that scale technical decision-making across…
Added 2 hours ago
Senior Platform Developer
nesto
Canada
Full-time
We strive to implement the best emerging DevOps practices, such as GitOps, Internal Developer Platforms, and Infrastructure as Code. We believe that DevOps goes beyond the mere automation…
Added 2 hours ago
Lead Repair Engineer/Specialist - Saskatoon, SK
Vecima Networks Inc.
Saskatoon, SK
Full-time
…people deliver future-ready software, services, and integrated platforms that power broadband and video streaming networks, monitor and manage transportation, and transform experiences in…
Added 2 hours ago
Site Reliability Engineer II (AI Platform)
OpenTable
Toronto, ON
As a Site Reliability Engineer II on the Serving Platforms team within Infrastructure Engineering, you will design, automate, and manage the core container stack and infrastructure powering…
Added 2 hours ago
Senior Data Platform Developer - AI Platform
Geotab
Oakville, ON
Full-time
…responsibility will be developing and maintaining new machine learning platforms and managing generative AI applications and agents. You will be responsible for implementing logging,…
Added 2 hours ago
Murex Integration Delivery Lead
Accenture
Toronto, ON · Montreal, QC
Full-time
…operations - for more than 20 years. Our Murex services span system transformation, DevOps enablement, cloud adoption, continuous testing, upgrades, and managed services. Working closely…
Added 2 hours ago
Kubernetes Reliability Engineer
Roche
Mississauga, ON · Canada Pharma Campus
Full-time
Scope: Engages in and improves autonomously the whole lifecycle of platforms and services - from inception and design through deployment, operation, and retirement. Applies software…
Added 2 hours ago
Principal, Infrastructure Architecture
RBC
Toronto, ON · Mississauga, ON
Full-time
Proven experience in software development or engineering roles.
Added 2 hours ago
Sr Associate Machine Learning Engineer
Workday
Vancouver, BC · Canada, BC, Vancouver
Full-time
…will revolutionize our customers' workday? Join the AI Agent Engineering team, where we're pioneering cutting-edge HR & Finance AI Agents that deeply integrate within the Workday suite. Be…
Added 2 hours ago
Lead Harness Engineer
Government of Alberta
AB
…provides architectural leadership, CloudOps, DevOps practices, AI engineering, and software delivery excellence across product and platform teams. We shape how digital solutions are…
Added 2 hours ago
Senior Software Engineer, AI Enablement
Xero
Vancouver, BC
Full-time
The AI Enablement team sits within Engineering Experience and focuses on helping product engineering teams work faster and better with AI through platforms, tooling and practical guidance…
Added 2 hours ago
Staff Software Engineer, Data
Solink
Remote, Canada
$138,445 to $173,056 CAD / year
Full-time · Remote
Reports To: Sean Yang, Director of Engineering

Apostra

Staff Software Engineer (Fullstack, BE-leaning)

ON, Canada
United Counties of Stormont, ON, Canada

Pay: The salary range for this role is $180k-$230k USD / $190k-$245k CAD.
Job type: Contract
Apply by: Oct 29, 2026
Posting language: English
Posted: Sep 29, 2026

Apply About employer

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Original job description

About Apostra

Apostra is defining a new future for advertising, for both humans and their agents.

Our founders helped build the technology that shaped advertising as we know it today. Now, we’re reimagining it from the ground up for a world of people and agents, with human intent at its heart.

We’re creating a place where advertisers, media owners and their agents can discover and act on every kind of media, opening up opportunities that have historically been fragmented and hard to access.

About The Role

We’re building the future of programmatic advertising through AI agents. Our technical team is creating the infrastructure that enables AI agents to discover, negotiate, and transact media inventory autonomously.

In this role, you’ll be a technical leader responsible for the APIs, protocols, and agent interfaces that power our agentic advertising platform. You’ll design systems where AI agents are first-class participants, with their own authentication, capabilities, and communication standards.

You’ll work at the intersection of advertising technology, distributed systems, and emerging AI agent frameworks - making architectural decisions that shape how our marketplace evolves.

This is a Fullstack (80/20 backend leaning), hands-on leadership role. You’ll write production code, prototype new agent communication patterns, review system designs, and mentor engineers while setting technical direction.

This isn’t a typical engineering role

We’re operating in a space without a fixed playbook, so this role is best suited for builders who are comfortable creating structure where none exists.
Our approach favors rapid experimentation over upfront perfection - we test, learn, and then formalize what works.
The pace is fast and often pushes beyond what feels comfortable. For the right person, that’s part of the appeal.
We’re also looking for engineers who are already actively exploring AI - this isn’t a “learn it on the job” environment.

Responsibilities

Design and architect scalable APIs for both human and AI agent clients
Lead development of agent interfaces, MCP servers, and A2A communication layers
Build and operate high-throughput systems for real-time advertising transactions
Evaluate and integrate emerging agent frameworks and protocols
Partner with product and design to define clear, agent-friendly API contracts
Drive architectural decisions around authentication, protocols, and transaction flows
Collaborate with external DSPs, SSPs, and agent platform partners
Mentor engineers on API design, distributed systems, and agent architectures
Anticipate and address edge cases in autonomous agent behavior

Qualifications

8+ years building distributed backend systems at scale
4+ years in a technical leadership role
4+ years working professionally within the AdTech ecosystem
Strong expertise in API design and architecture (REST, event-driven systems, auth, versioning)
Experience with AI agent frameworks and communication protocols, or the ability to rapidly learn and evaluate them
Proficiency with TypeScript/Node.js, React, and cloud platforms (GCP or AWS)
Experience designing systems for autonomous or semi-autonomous decision-making
Track record of mentoring engineers and fostering a collaborative team culture
Comfort working in fast-moving, evolving environments

Tech Stack

API Layer: TypeScript/Node.js, REST and event-driven services
Agent Interfaces: MCP servers and A2A protocol handlers
Data: PostgreSQL, BigQuery, Cloud Storage, Redis

As the agent ecosystem evolves, you’ll help evaluate new technologies and ensure our marketplace remains at the forefront.

Compensation

The salary range for this role is $180k-$230k USD / $190k-$245k CAD.

These ranges span multiple location-based salary bands across the US and Canada. Candidates are aligned to a narrower range based on geographic market compensation data specific to where they live, and final offers reflect demonstrated skills, experience, and role expectations.

Benefits & Perks

Details vary by location (USA/Canada), but all employees receive:

Health & wellness: Comprehensive medical, dental, and vision coverage with significant employer contribution; short- and long-term disability coverage; health savings/flexible spending options
Retirement: Employer-matched retirement savings plan (401(k) or RRSP)
Time off: Generous paid time off, statutory holidays, and year-end office closure
Parental leave: 13 weeks fully paid (eligibility requirements apply)
Remote work: Company-provided home office equipment, setup stipend, and access to WeWork spaces
Equity: Stock options

A Note To Applicants

We believe that all people are capable of great things. We encourage you to apply even if you do not meet all of the requirements that are listed within this job description.

Apply About employer

More about this job

Responsibilities

Design and build scalable APIs, agent interfaces, MCP servers, and A2A communication layers for an AI-powered programmatic advertising marketplace. Lead architectural decisions and production development, collaborate with advertising and platform partners, and mentor engineers on APIs, distributed systems, and agent architectures.

Requirements

Requires 8+ years building distributed backend systems at scale, 4+ years in technical leadership, and 4+ years of professional AdTech experience. Candidates should bring strong API architecture expertise, experience with AI agent frameworks or the ability to evaluate them quickly, proficiency in TypeScript/Node.js, React, and GCP or AWS, and a record of mentoring engineers.

Skills

Distributed Systems
Technical Leadership
API Design
TypeScript
Node.js
React
REST
Event-Driven Systems
Authentication
AI Agent Frameworks
MCP Servers
A2A Protocol
AdTech
Cloud Platforms
PostgreSQL
BigQuery

Benefits

Medical Insurance
Dental Insurance
Vision Insurance
Disability Coverage
Health Savings Account
Flexible Spending Account
Paid Time Off
Statutory Holidays
Year-End Office Closure
Paid Parental Leave
Home Office Equipment
Home Office Setup Stipend
WeWork Access
Stock Options

Visa sponsorship

Not detected in the job text

Keywords

Programmatic Advertising
AdTech
AI Agents
Distributed Systems
Scalable APIs
REST
Event-Driven Services
API Authentication
API Versioning
MCP Servers
A2A Protocol
TypeScript
Node.js
React
GCP
AWS
PostgreSQL
BigQuery
Cloud Storage
Redis
Real-Time Transactions
DSPs
SSPs
Agent Frameworks
Agent Communication Protocols
System Architecture
Technical Mentorship

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