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Added 3 days ago
Intern - Software Engineer, Winter 2027
EQ Bank | Canada's Challenger Bank
Toronto, ON
Starting in January 2027, you’ll begin your journey as a Software Engineer Intern through our Engineering Graduate Program, designed to accelerate your development through immersive,…
Added 3 days ago
EB
Intern - Software Engineer, Winter 2027
EQ Bank
Toronto, ON
- Volunteer
Starting in January 2027, you’ll begin your journey as a Software Engineer Intern through our Engineering Graduate Program, designed to accelerate your development through immersive,…
Added 4 days ago
Software Engineer
Scotiabank
Toronto, ON
As a Software Engineer on Scotiabank’s Data & AI Technology team, you will be involved in designing, building, and scaling our enterprise data catalog and data management solutions…
Added 5 days ago
EG
Développeur(-euse) de logiciels sénior(e) (contenu) / Senior Software Development Engineer
Expedia Group
Montreal, QC · Canada - Quebec - Montreal
- Full-time
Added 5 days ago
F
Senior Software Engineer
Fleetworthy
AB · Edmonton, AB
- Full-time
The Senior Software Engineer is a hands-on technical contributor embedded in our agile development organization, helping build and deliver our next-gen compliance platform. You bring the…
Added 7 days ago
P
Senior Backend Engineer .NET & Python
PosiTrace
Vancouver, BC
- Full-time
We're migrating toward MACH (Microservices, API-first, Cloud-native, Headless) and need a senior backend engineer to co-own that evolution.
Added 9 days ago
C
Backend Engineer
Creator.co
Vancouver, BC
- Full-time
We are looking for a Mid-Level Backend Engineer who has "architectural empathy" - someone who writes clean Node.js code but keeps a sharp eye on how that code impacts database load, data…
Added 16 days ago
N
Member of Technical Staff 2- EIE
Nutanix
Vancouver, BC
- $103,000 to $155,000 CAD / year
- Full-time
Are you an ambitious software engineer looking to solve complex distributed systems challenges and build enterprise-grade platform infrastructure? Join Nutanix as a Member of Technical…
Added 17 days ago
B
Senior Software Engineer II, Data Lakehouse
Braze
Toronto, ON
- Full-time
We're looking for a Senior Software Engineer to grow our Data Lakehouse team’s capacity for impact. The Data Lakehouse team provides the foundational infrastructure and tools that enable…
Added 17 days ago
B
Software Engineer II, Data Lakehouse
Braze
Toronto, ON
- Full-time
We're looking for a Software Engineer to grow our Data Lakehouse team’s capacity for impact. The Data Lakehouse team provides the foundational infrastructure and tools that enable teams…
Added 17 days ago
Software Engineer II, Data Lakehouse
Braze
Toronto, ON
We're looking for a Software Engineer to grow our Data Lakehouse team’s capacity for impact. The Data Lakehouse team provides the foundational infrastructure and tools that enable teams…
Added 17 days ago
Senior Software Engineer II, Data Lakehouse
Braze
Toronto, ON
We're looking for a Senior Software Engineer to grow our Data Lakehouse team’s capacity for impact. The Data Lakehouse team provides the foundational infrastructure and tools that enable…
Added 17 days ago
W
DevOps Engineer, Evisort AI
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
As a DevOps engineer in our team, you will have the opportunity to work on innovative cloud platform technologies (AWS, GCP) and implement tools to automate maintenance and support our…
Added 1 month ago
Senior Software Engineer
Fleetworthy
Edmonton, AB
The Senior Software Engineer is a hands-on technical contributor embedded in our agile development organization, helping build and deliver our next-gen compliance platform. You bring the…
Added 1 month ago
CO
Associate, Software Engineer, New Grad Card Expansion
Capital One
Toronto, ON
- Full-time
Develop backend Microservice applications and APIs
Added 1 month ago
D
Senior Software Engineer
Deltek
Calgary, AB
- $100,000 to $120,000 CAD / year
- Full-time
Deltek is looking for a Senior Software Engineer to join our established Replicon Core team, a tight-knit group of full-stack developers, architects, and rising talent building products…
Added 1 month ago
NS
Lead AI Back-End Engineer
Network Solutions
Canada
- Full-time
The impact you’ll make as a Lead AI Back-End Engineer
Added 1 month ago
ND
Lead AI Back-End Engineer
Newfold Digital
Canada
- Full-time
The impact you’ll make as a Lead AI Back-End Engineer
Added 1 month ago
Software Engineer, Backend
DoorDash Canada
Toronto, ON
We're looking for Backend Engineers to work on both Product and Product Platform based teams. Product focused Engineers work at the intersection of product and infrastructure to solve key…
Added 1 month ago
QS
Software Dev Staff Engineer
Quest Software
Canada
- Full-time
Quest Software is seeking an AI Software Engineer to help define and advance AI-first software development practices for a cloud-native SaaS product on the Microsoft Azure platform. This…
Added 1 month ago
N
Backend AI Engineer
Nexxa.AI
Remote, Canada
- Full-time
- Remote
Strong proficiency in TypeScript/Node.js (our primary backend language), with strong API and microservice design skills. Working proficiency in Python is a plus for ML/model integration…
Added 1 month ago
CH
Senior Backend Engineer
Compass Holdings Canada Inc
Remote, Canada
- Full-time
- Remote
Design and implement backend architecture following best software engineering principles
Added 1 month ago
M
Lead Software Engineer (SDET)
Mastercard
Toronto, ON
- Full-time
We are recruiting a Lead Software Engineer In Test who has a proven record of leading and solutioning full automation testing strategies and lifecycles for microservice-oriented Cloud-based…
Added 2 months ago
BM
Senior Back End Engineer
Bespoke Metrics Inc.
Toronto, ON
- $120,000 to $140,000 CAD / year
- Full-time
We’re looking for a Senior Backend Engineer who is excited by meaningful technical challenges, enjoys collaborating with smart and supportive teammates, and wants to have real impact in a…
Added 1 month ago
OI
Senior Game Backend Engineer
Offworld industries
New Westminster, BC
- $110,000 to $135,000 CAD / year
- Full-time
- Temporary
…ability to do the same. We are looking for a talented Game Backend Engineer to take technical ownership of our live-service game’s microservice backend. You will play a critical role in…

Newfold Digital

Lead AI Back-End Engineer

Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Aug 27, 2026

Original job description

At Network Solutions, we’ve been trusted for decades to help people get online and stay ahead. We’ve been here since the beginning of the internet, and we’re still building for what comes next.

As the original digital identity authority, we help secure domain names, protect brands, and safeguard the infrastructure businesses rely on. We empower our customers to own and manage the assets that define them online, while delivering enterprise-grade security to protect against virtual threats. Our team leverages modern, AI-accelerated tools to streamline how businesses manage their digital presence, making the most of our decades of experience.

The Network Solutions team is here to help online businesses protect what’s theirs and build for tomorrow. That’s why millions trust us to protect their domains, brands, and websites every day.

The impact you’ll make as a Lead AI Back-End Engineer

• Set the technical architecture for our agent powered platform, choosing the right mix of LLMs, retrieval technologies, agent frameworks, and microservice patterns to meet reliability, cost, quality, and latency targets.

• Drive architecture for high throughput APIs built with .NET, C#, Python 3.11+, FastAPI async, SQLModel, and Semantic Kernel, from design documents through production rollout.

• Lead multi agent orchestration across handoff, sequential, parallel, and supervisor patterns, combining knowledge grounded and tool calling agents across OpenAI GPT 5.6 Sol, Terra and Luna, Google Gemini 3.7 Flash, Anthropic Claude Sonnet 5 and Opus 5, xAI Grok 4.6, and future model providers.

• Guide teams implementing Retrieval Augmented Generation on Azure AI Search, pgvector, Chroma, and equivalent vector and hybrid retrieval platforms, ensuring index quality, filtering, evaluation, and safety controls.

• Own end to end CI/CD pipelines using Bitbucket Pipelines, Jenkins, or similar platforms, including linting, type checking, security scanning, testing, containerization, and deployment.

• Mentor and hire engineers and adopt AI coding agents such as Cursor and Claude Code as engineering force multipliers while maintaining strong code quality, security, and review standards.

• Champion observability and FinOps for LLM workloads using structured JSON logging, OpenTelemetry tracing, Langfuse, evaluation frameworks, and cost dashboards, keeping latency and cost per request within defined SLOs.

Partner with Product and Security to translate business goals, compliance requirements, emerging AI capabilities, and user feedback into a pragmatic technical roadmap.

Must have experience

• 7+ years building and scaling production backend systems, including 2+ years in a technical lead, staff, principal, or equivalent role.

• Expert in REST API design and development using Python FastAPI or .NET C# APIs, with strong experience in dependency injection, middleware, profiling, performance optimization, and distributed systems.

• Hands on leadership experience with Semantic Kernel or equivalent agent and LLM frameworks, including production agent orchestration, tool calling, structured outputs, and multi step workflows.

• Delivered at least one production RAG system or pipeline using a vector or hybrid search platform such as Azure AI Search, pgvector, Chroma, or equivalent, with measurable latency and quality KPIs.

• Deep PostgreSQL expertise plus SQLModel, SQLAlchemy 2, and Alembic migrations at scale.

• Proven track record integrating multiple frontier and cost optimized model providers, such as OpenAI GPT 5.6, Gemini 3.x, Claude 5, Grok 4.x, or equivalent, including model routing, structured output, reasoning, tool calling, and fallback strategies.

• Fluency with Poetry, Docker, GitHub Actions, Azure DevOps, Jenkins, or Argo, along with infrastructure as code fundamentals and blue green or canary release strategies.

Strong people leadership through code reviews, architectural guidance, technical mentoring, roadmap planning, hiring, and cross team communication.

Nice to have

Experience with message queue and event driven architectures using RabbitMQ, Kafka, Azure Service Bus, or equivalent.

Experience with GPU inference fleets, self hosted open weight models, or serverless model hosting.

• Experience with model gateways, intelligent model routing, MCP, agent interoperability, prompt caching, and LLM cost optimization.

Familiarity with automatic evaluation pipelines, agent evaluations, LLM as judge techniques, safety guardrails, and cost aware prompt and context engineering.

Why join the Newfold AI team?

You’ll steer the core intelligence behind our AI products, building an LLM agnostic, agent driven platform that serves millions of users while meeting enterprise grade standards for reliability, security, governance, and economics. If you thrive on significant technical challenges, enjoy mentoring strong engineers, and want the opportunity to shape both architecture and engineering culture, we’d love to meet you.

Why you’ll love us.

Work-life balance. Our work is thrilling and meaningful, but we know balance is key to living well.
We celebrate one another’s differences. We’re proud of our culture of diversity and inclusion. We foster a culture of belonging. Our company and customers benefit when employees bring their authentic selves to work. We have programs that bring us together on important issues and provide learning and development opportunities for all employees. We have 20 + affinity groups where you can network and connect with Newfolders globally.
We care about you. We are a family, and we care about you and your family’s physical and mental health by providing competitive HMO benefits – 175k MBL with one free dependent upon one year of service! We also give out Punctuality Bonus, Generous Vacation policy, and much more!
Where can we take you? We’re fans of helping our employees learn different aspects of the business, be challenged with new tasks, be mentored, and grow their careers. Unfold new possibilities with #teamnewfold!

#NetworkSolutions

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More about this job

Responsibilities

Set the technical architecture for an agent-powered platform and lead the development of high-throughput APIs using .NET and Python. Mentor engineers and manage the end-to-end CI/CD pipelines and observability for LLM workloads.

Requirements

Requires 7+ years of backend experience with at least 2 years in a leadership role and expertise in REST API design. Must have a proven track record of delivering production RAG systems and integrating multiple frontier LLM providers.

Skills

Python
.NET
C#
FastAPI
Semantic Kernel
LLM Orchestration
RAG
PostgreSQL
Azure AI Search
Docker
CI/CD
System Architecture
Vector Databases
API Design
Technical Leadership
FinOps

Benefits

HMO Benefits
Punctuality Bonus
Generous Vacation Policy
Learning And Development Opportunities

Visa sponsorship

Not detected in the job text

Keywords

AI
LLM
Backend Engineering
FastAPI
C#
.NET
Semantic Kernel
RAG
Azure AI Search
Pgvector
Chroma
PostgreSQL
SQLModel
SQLAlchemy
Alembic
OpenAI GPT
Google Gemini
Anthropic Claude
xAI Grok
Docker
Bitbucket Pipelines
Jenkins
GitHub Actions
Azure DevOps
Argo
OpenTelemetry
Langfuse
FinOps
Microservices
Vector Search

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