Jobs in Canada

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Lead Software Engineer AI (Staff Engineer)
Thomson Reuters (Tax & Accounting) Inc
Toronto, ON
- Full-time
- Hybrid
Thomson Reuters products power professionals shaping the world across legal, tax, accounting, and audit. As a Lead Software Engineer AI (Staff Engineer AI) on Cloud Audit Suite, you will…
Added 1 day ago
TR
Senior Inference Engineer - AI
Thomson Reuters Applications Inc
Toronto, ON
- Full-time
- Hybrid
Within Platform Engineering and Enterprise AI Services, an AI Inference Engineer is responsible for productionizing, optimizing, and scaling AI and LLM workloads that power TR’s AI driven…
Added 1 day ago
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Staff Software Engineer – AI Platform
Thomson Reuters Holdings Inc.
Toronto, ON
- Full-time
- Hybrid
Thomson Reuters is building the AI platform that will power the next decade of tax, accounting and audit products, including CoCounsel Audit, a suite of AI‑native products used by…
Added 1 day ago
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Project Coordinator / Field Engineer - Industrial
Ledcor Management Limited
Edmonton, AB
- Full-time
Assists in the scoping, planning, and development of Field Installation Work Packages (FIWP), and ensures the timely removal of constraints and issuing to crews
Added 1 day ago
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Senior Software Development Engineer
Remitly Canada Operations, Inc.
Burnaby, BC
- Full-time
Design and build backend services that power verification and risk controls used across Remitly.
Added 1 day ago
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AI Engineer
Patlytics, Inc.
Toronto, ON
- Full-time
- Hybrid
…generative AI engine - custom-built for intellectual property - power every phase of the patent workflow from invention disclosure through litigation, delivering citation-backed insights…
Added 1 day ago
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DV - Staff Verification Engineer - Serdes
Eliyan
Canada
- Full-time
- On-site
Join the leading chiplet startup! As an Eliyan Staff Design Engineer, you will be working at a fast-paced early-stage startup creating technologies that fuel tomorrow's chiplet-based…
Added 1 day ago
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Digital - Staff Digital Design Engineer - PHY
Eliyan
Canada
- Full-time
- On-site
Join the leading chiplet startup! As an Eliyan Staff Digital Design Engineer, you will be working at a fast-paced early-stage startup creating technologies that fuel tomorrow's…
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Search Engineer, AI Infrastructure (SF/Toronto)
Lavendo
Toronto, ON
- $235,000 to $260,000 USD / year
- Full-time
- On-site
Their job is to make that problem disappear: give AI systems reliable access to the live web, then make the results clean, current, structured, and useful enough to power real products.
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Senior Software Engineer - Golang
Litmus
Toronto, ON
- $120,000 to $150,000 CAD / year
- Full-time
- Hybrid
…you’ll build the infrastructure that enables real-time data to power AI and machine learning systems in production…
Added 1 day ago
Staff Backend Engineer
Hatch
Canada
…take care of themselves and the people they love through the power of…
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Senior Forward Deployed Engineer
Caylent
Canada
- $150,000 to $235,000 CAD / year
Our capabilities span generative and agentic AI, cloud migration and modernization, cloud-native application development, data and analytics, DevOps, managed services, security and…
Added 1 day ago
Senior Software Developer, Growth
7shifts
Toronto, ON
…vision of creating a thriving restaurant industry through the power of connected & engaged…
Added 1 day ago
AI Workflow Engineer
7shifts
Toronto, ON
…vision of creating a thriving restaurant industry through the power of connected & engaged…
Added 1 day ago
AI Delivery Engineer, Developer Experience
7shifts
Toronto, ON
As an AI Delivery Engineer on the Developer Experience squad at 7shifts, you work at the intersection of strong engineering judgment and AI-enabled execution. You report to the Engineering…
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CPU Micro-Architect / RTL (Lead & IC Engineers)
NUVACORE
Canada
- $140,000 to $300,000 USD / year
- Full-time
- Hybrid
…RTL for the CPU which targets and delivers industry leading power, performance, and…
Added 1 day ago
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Full Stack Engineer
Feathery
Toronto, ON
- $100,000 to $140,000 CAD / year
- Full-time
- Hybrid
We’re hiring a Full Stack Engineer to help build and scale core product capabilities end-to-end. This role is ideal for someone who enjoys owning features across the stack - from designing…
Added 1 day ago
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Solutions Engineer
Feathery
Toronto, ON
- $100,000 to $135,000 CAD / year
- Full-time
- Hybrid
We’re hiring a Solutions Engineer to work closely with prospective and existing customers to design, implement, and scale workflows on Feathery. This role is ideal for someone who enjoys…
Added 1 day ago
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Research Engineer, World Models
Waabi
Toronto, ON
- $155,000 to $269,000 USD / year
- Full-time
- Hybrid
…scalable, controllable, and efficient simulation. As a Research Engineer in the World Models team, you will develop algorithms and productionize the next generation of World Models that can…
Added 1 day ago
Field Deployment Engineer - Counter UAS
Axon
Canada
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Senior Windows Native Application Engineer (Screen Recording)
Cresta
Toronto, ON
- Full-time
- Hybrid
…United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every…
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Senior Software Engineer, Backend - Platform Team
Cresta
Toronto, ON
- Full-time
- Hybrid
…United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every…
Added 1 day ago
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Software Engineer, Agent
Sierra
Toronto, ON
- $180,000 to $390,000 CAD / year
- Full-time
- On-site
…research, product, and platform to shape the future of AI agent development and Sierra's…
Added 1 day ago
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Hardware Designer (Future Opportunities)
Syntronic
Kanata, ON
- $90,000 to $140,000 CAD / year
- Full-time
- On-site
Syntronic is a global leader in design and development, specializing in electronics, electro-mechanics, and software. We’re not just a company; we’re a community of innovators. Our teams…
Added 1 day ago
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Senior/Staff Software Engineer, Backend
Terminal
Toronto, ON
- $185,000 to $285,000 CAD / year
- Full-time
- On-site
- Build the primitives that power our platform: connector frameworks, orchestration, monitoring, auth, testing, and more.

Cresta

Senior Software Engineer, Backend - Platform Team

Canada
Toronto, ON, Canada

Hybrid

Full-time

Apply on job-boards.greenhouse.io About employer

Applications open in a new tab.

Job details

Job type: Full-time
Workplace: Hybrid
Experience: 5+ years of experience building scalable backend systems in production environments.
Posting language: English
Posted: Dec 29, 2025

Original job description

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day.

Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, Ping Wu, founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences.

Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta.

About the role:

Cresta’s Core Platform underpins the company’s entire product portfolio. Our long term vision is to build a robust, reliable, secure, and extensible foundation that supports continued innovation, satisfies enterprise customer requirements, and keeps operational costs in check. Two critical components for that are agent assist backend services and scalable authentication systems, tools, processes and frameworks based on industry standards and security best practices.

This role is focused on building various backend systems needed to enable successful customer integrations:

Enable agent assist integration for chat and email. This involves working with the frontend platform team, ML teams, infra team and other backend services.
Expand our backend agent assist services to meet customer requirements and feature requests.
Address any customer issues that block integrations, affect user experience or system performance.
Work with the auth and security team to meet Cresta’s diverse authentication and security needs for internal workflows and external customer facing integrations.

We are looking for strong versatile backend engineers who want to work at the intersection of distributed systems, real-time communication, enterprise integrations, and IAM systems.

Why This Role Is Unique:

Enterprise-Grade Integrations: Design robust integrations with major CCaaS platforms and customer systems.
Specialized Auth Experience: Join the Cresta auth team and help build specialized authentication systems to authenticate users, service accounts, virtual agents, server workloads, cloud based authentication for external integrations, etc.
Agent Assist Integrations: Work directly with the frontend platform team to build solutions for agent assist integrations for various channels such as chat and email and help rollout these integrations in customer environments.

If you’re a strong backend engineer who wants to apply your expertise to real-world AI systems operating inside complex enterprise ecosystems, and expand your expertise in auth, this role offers that opportunity.

Responsibilities:

Contribute to building the best-in-class company in addition to building the best-in-class product.
Architect systems that manage real-time conversation state, context propagation, and session lifecycle.
Play a substantial role in the agent assist integration process (chat and email) and authentication engineering team.
Work with Cresta product and engineering teams, build and continuously improve the Cresta platform and new product requirements.
Stay closely with customers and their requirements, analyze the technical tradeoffs, own the customer facing deliverables.
Demonstrate the engineering best practices in deliverables and daily work. Uphold others to the same high standards.
Technical ownership in a substantial part of the Cresta authentication stack.
Ensure high availability, low latency, and strong observability for real-time conversation systems.
Implement authentication, authorization, compliance, and enterprise security best practices across integrations.
Drive improvements in reliability, performance, and scalability in production environments handling high interaction volumes

Qualifications We Value:

Bachelor’s degree in Computer Science or related field.
5+ years of experience building scalable backend systems in production environments.
Strong experience designing and maintaining robust APIs (REST, gRPC).
Solid understanding of distributed systems and real-time communication architectures.
Experience integrating with third-party enterprise platforms and APIs.
Experience working with CCaaS platforms or contact center systems is a strong plus.
Familiarity with AI Agents, Virtual Agents, or LLM-based systems is a plus.
Experience with containerized environments (Kubernetes, Docker).
Experience with cloud platforms such as AWS, GCP, or Azure.
Strong understanding of system reliability, observability, and security in enterprise environments.
Experience in building authentication systems is a plus.

Perks & Benefits:

We offer Cresta employees a variety of medical, dental, and vision plans, designed to fit you and your family’s needs
Paid parental leave to support you and your family
Monthly Health & Wellness allowance
Work from home office stipend to help you succeed in a remote environment
Lunch reimbursement for in-office employees
PTO: 3 weeks in Canada - Unlimited in the US

Compensation for this position includes a base salary, equity, and a variety of benefits. Actual base salaries will be based on candidate-specific factors, including experience, skillset, and location, and local minimum pay requirements as applicable. We are actively hiring for this role in the US and Canada. Your recruiter can provide further details.

This posting will be used to fill a newly-created role.

Our use of AI in recruiting: We may use AI tools in our recruiting process, which require human review and oversight. If you have questions about our use of AI or wish to opt out, please contact recruiting@cresta.ai (if you are opting out, please use the subject ‘Opt-Out’ in your email).

Recording & AI transcription: We do not authorize candidates to record or use AI transcription of any interview by phone, notetaker app, AI glasses, or other device. Candidates may request an exception or accommodation for review during the interview process as needed.

Recruiting impersonation scams: We have noticed a rise in recruiting impersonations across the industry, where scammers attempt to access candidates' personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always come from the @cresta.ai domain. Any outreach claiming to be from Cresta via other sources should be ignored.

Apply on job-boards.greenhouse.io About employer

More about this job

Responsibilities

The Senior Software Engineer at Cresta will build backend systems for real-time conversation state and agent assist integrations, and work on authentication and security. The role also involves owning customer-facing deliverables and resolving integration issues.

Requirements

Candidates need 5+ years of building scalable production backend systems, strong REST and gRPC API experience and an understanding of distributed and real-time systems. Experience with third-party enterprise APIs, cloud platforms, Kubernetes and Docker is valued.

Skills

REST APIs
gRPC
distributed systems
real-time communication architecture
authentication systems
authorization
IAM
third-party API integration
CCaaS platforms
Kubernetes
Docker
AWS
GCP
Azure
system reliability
observability
enterprise security
session lifecycle management
API design
backend development

Benefits

Medical, dental and vision plans
Paid parental leave
Monthly health and wellness allowance
Work from home office stipend
Lunch reimbursement
Equity

Keywords

backend engineer
senior software engineer
REST
gRPC
distributed systems
real-time communication
authentication
IAM
CCaaS
contact center
AI agents
LLM
Kubernetes
Docker
AWS
GCP
Azure
API integration
observability
enterprise software

Seniority

Senior

Perks

Parental leave
Stock or equity
Wellness program
Meals
Remote work allowance

Tools

Kubernetes
Docker
AWS
GCP
Azure

Languages

English

Fields of study

Computer Science

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Jobs in Canada