Software development jobs in Vaughan, Ontario

Find software development jobs in Vaughan, Ontario and nearby towns within 25 km. Read the full details and apply.

Newest first

Within 25 km of Vaughan

Added 4 days ago
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11698 – Software Developer – CRM – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11721 – Software Developer – Intermediate
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11719 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11719 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11721 – Software Developer – Intermediate
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11719 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
RQ11721 – Software Developer – Intermediate
S M Software Solutions Inc
Toronto, ON
Added 4 days ago
Senior AI Software Engineer
Encore Technical Solutions Inc.
Toronto, ON
Added 4 days ago
L
Senior Software Engineer
LyveChat
Toronto, ON
- $150,000 to $190,000 CAD / year
Added 4 days ago
Senior Full Stack Software Developer
Robertson & Company Ltd.
Toronto, ON
Added 4 days ago
Site Reliability Engineer
Porter Airlines Inc.
Toronto, ON
Added 4 days ago
Adobe Site Reliability Engineer - Content Delivery Network
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
Added 4 days ago
Sr. Consultant, Full Stack Developer
CIBC
Toronto, ON
Added 4 days ago
Software Developer II (Full Time) - Canada
Cisco
Toronto, ON
Added 4 days ago
Software Developer Embedded Systems II (Full Time) – Canada
Cisco
Toronto, ON
Added 4 days ago
Site Reliability Engineer
Porter Airlines Inc.
Toronto, ON
Added 4 days ago
Senior Embedded Software Engineer
Pulsenics Inc.
Toronto, ON
Added 4 days ago
Full Stack Software Developer
Pulsenics Inc.
Toronto, ON
Added 4 days ago
Senior Software Developer
DNV
Toronto, ON
Added 4 days ago
Senior Full Stack Developer
Symbiotic Digital
Toronto, ON

Encore Technical Solutions Inc.

Senior AI Software Engineer

Toronto, ON, Canada

Full-time

Within 25 km of Vaughan · About 22.9 km from the city centre

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Job details

Job type: Full-time
Apply by: Nov 19, 2026
Posted: Oct 20, 2026

Original job description

Senior Software AI Engineer - Agentic Platforms

Full-Time, Permanent | Downtown Toronto | Hybrid

Our client, a global enterprise, is building an internal AI platform - a multi-tenant, model-agnostic environment spanning a web app, a desktop agent client, an AI App Store, and a skills/tool ecosystem over the company's knowledge.

They're looking for a Senior AI Engineer to help design and build the agent infrastructure at the core of it: orchestration engines, the desktop agent harness, tool/skill registries, and the policy layers that make it all safe to run at enterprise scale.

What you'll do

Build and extend multi-agent orchestration (LangGraph, Microsoft Agent Framework, Deep Agents) - stateful graphs, checkpointing, sub-agents, human-in-the-loop, long-running execution.
Work directly with frontier LLM SDKs at the agent-loop level (Anthropic, OpenAI, Google) - not just chat completions.
Own the model-agnostic routing layer: provider routing, cost/token accounting, graceful degradation as models churn.
Build MCP integration, sandboxing/process isolation, and a permission system (ALLOW/ASK/DENY) enforced across runtimes.
Build retrieval, grounding, and citation pipelines that hold up in production.
Build eval infrastructure - regression gates, tracing, and diagnosability for agent failures.

What we need

7+ years building production software, with recent, substantial work on LLM-based systems used by real users.
Strong TypeScript (Node.js, async, strict typing) and working proficiency in Python (FastAPI, Pydantic).
Production depth in LangGraph, Microsoft Agent Framework, or Deep Agents.
Direct experience with at least one frontier provider SDK at the agent-loop level.
Hands-on with tool calling, MCP (or comparable), streaming (SSE/WebSocket), structured output.
Cloud-native delivery: containers, Kubernetes (AKS preferred), CI/CD, observability.

Nice to have

Google ADK, Semantic Kernel, CrewAI, LlamaIndex, AutoGen, Pydantic AI, Mastra.
Sandboxing/isolation experience (gVisor, nsjail, Firecracker, Seatbelt, Bubblewrap).
Electron/desktop app engineering, vector search, regulated-industry experience (insurance, banking, financial services).

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More about this job

Responsibilities

Design and build enterprise-scale agent infrastructure, including multi-agent orchestration, desktop agent tooling, registries, model routing, and permission controls. Develop production retrieval and citation pipelines, sandboxed MCP integrations, and evaluation, tracing, and diagnostics systems.

Requirements

Requires 7+ years of production software development experience, including recent substantial work on LLM systems used by real users, strong TypeScript, and working proficiency in Python. Candidates should have production experience with a listed agent framework and direct agent-loop experience with a frontier LLM provider SDK, plus cloud-native delivery skills.

Skills

TypeScript
Node.js
Python
LangGraph
Microsoft Agent Framework
Deep Agents
LLM Agent Development
Multi-Agent Orchestration
Frontier LLM Provider SDKs
Tool Calling
Model Routing
MCP Integration
Sandboxing and Process Isolation
Retrieval and Grounding
Evaluation Infrastructure
Kubernetes

Visa sponsorship

Not detected in the job text

Keywords

Agentic Platforms
Multi-Tenant AI Platform
Multi-Agent Orchestration
LangGraph
Microsoft Agent Framework
Deep Agents
Anthropic
OpenAI
Google
TypeScript
Node.js
Python
FastAPI
Pydantic
MCP
Tool Calling
Streaming
Server-Sent Events
WebSocket
Structured Output
Kubernetes
AKS
CI/CD
Observability
Sandboxing
Vector Search
Retrieval-Augmented Generation
Human-in-the-Loop
Electron
Regulated Industries

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