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Added 11 mins ago
Senior Software Integration Engineer - Assistant Vice President
iCapital
Toronto, ON
iCapital is looking to hire a Senior Software Integration Engineer - AVP to deliver robust, scalable and high-quality integration solutions across complex client and product ecosystems.…
Added 11 mins ago
M
Int Eng - Int MTS - Software Development
MDA
Brampton, ON
- $75,148 to $112,722 CAD / year
- Full-time
We’re on the hunt for a Intermediate Flight Software Engineer/MTS on our Robotics & Space Operations team at our Brampton office.
Added 26 mins ago
C
Senior Digital ASIC Verification Engineer
Ciena
Ottawa, ON
- $111,900 to $178,700 CAD / year
- Full-time
We are looking for an experienced Senior Digital ASIC Verification Engineer to join our top-level team. You will play a key role in verifying complex, highly integrated digital ASICs, with…
Added 26 mins ago
L
Electronics Engineer
Lumentum
Ottawa, ON · Canada - Ottawa (Bill Leathem)
- Full-time
Lumentum is seeking a talented senior Electronics Engineer to develop leading edge electro-optic optical cross connect switch PCBAs. The successful candidate will be capable of priming…
Added 27 mins ago
C
Automotive Validation Engineer
Collabera
Windsor, ON
- Contract
The validation engineer provides leadership in the areas of formulation and implementation of testing strategies including traceability from requirements to results to achieve broader…
Added 27 mins ago
HN
Device Platform Engineer - Vancouver, BC (Onsite) - FTE/perm
Harvey Nash
Vancouver, BC
- $120,000 to $140,000 CAD / year
- Full-time
Job Title: Software Development Engineer – Device Platform Engineer
Added 27 mins ago
ET
Test Automation Engineer
Envision Technology Solutions
Toronto, ON
- Contract
We are seeking an experienced Software Development Engineer in Test (SDET) with strong expertise in test automation, Robot Framework, Selenium, Parasoft, and database testing. The candidate…
Added 27 mins ago
SS
GPU & AI Optimization Engineer
Sapphire Stream Technology
Toronto, ON · Greater Toronto Area, Canada
- Full-time
SST is seeking a Machine Learning Software Engineer – GPU & AI Optimization to join our growing engineering team in Markham, Ontario.
Added 42 mins ago
Director, Pipeline, Pacific Link
Trans Mountain
Calgary, AB
Added 42 mins ago
Director, Facilities, Pacific Link
Trans Mountain
Calgary, AB
Added 42 mins ago
Senior AI Platform Engineer
Scotiabank
Toronto, ON
The Senior AI Platform Software Engineer will lead the design, development, and operation of scalable software platforms that enable enterprise teams to build, deploy, monitor, and govern…
Added 56 mins ago
SG
Power Electronics Design Engineer
Socomec Group
Brampton, ON
- Full-time
We are looking for a highly skilled Power Electronics Design Engineer with expertise in simulation, hardware design, and testing to join our team. The ideal candidate will possess extensive…
Added 56 mins ago
SG
Electrical Engineer
Socomec Group
Brampton, ON
- Full-time
This Electrical Engineer position will contribute to the system-level electrical design and development of high-power electrical systems (up to 2.5 MVA) for Uninterruptible Power Supply…
Added 56 mins ago
ET
Senior RFIC Product Engineer (NPI & Yield)
Emtar Technologies Inc.
Vancouver, BC
- Full-time
We are seeking a Senior RFIC Product Engineer to bridge the gap between RF Design and high-volume manufacturing for our Satcom user terminal portfolio. You will own the silicon lifecycle…
Added 56 mins ago
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Mainframe Infra Engineer
Galent
Toronto, ON
- Contract
Set technical direction for, and provide hands-on oversight of, an offshore mainframe operations team executing patch installs, regression testing, and validation across the z/OS estate.
Added 56 mins ago
GL
Frontend Engineering Lead
Geomagical Labs
Remote, Canada
- Full-time
- Remote
…is a hands-on technical leadership role for an experienced engineer who enjoys solving complex engineering challenges, influencing architecture, mentoring teammates and delivering…
Added 56 mins ago
Software Integration Engineer - Associate
iCapital
Toronto, ON
iCapital is looking to hire a Software Integration Engineer - Associate to join the Annuities Platform Team. This role develops, tests and supports well-defined integration solutions that…
Added 56 mins ago
T
Performance Engineering Lead
TD
Mississauga, ON · Toronto, ON
- Full-time
Strategize & lead testing of TD Bank's production like infrastructure with a focus on automation & scale
Added 1 hour ago
Senior Software Development Engineer in Test (SDET)
Adaptive Financial Consulting
Montreal, QC
We are looking for a Senior Software Development Engineer in Test to join our team and help develop our open-source and proprietary platform products.
Added 1 hour ago
M(
Senior Platform Engineer, Quality Platform
MaintainX (An Autodesk Company)
Remote, Canada
- $107,000 to $195,000 CAD / year
- Full-time
- Remote
As a Senior Engineer on the Quality Platform team, you'll build the shared testing infrastructure, frameworks, and AI-assisted tooling that every engineering team at MaintainX relies on to…
Added 1 hour ago
RA
Staff Software Engineer, Platform
Rivian and Volkswagen Group Technologies
Remote, Canada
- $137,300 to $181,890 CAD / year
- Full-time
- Remote
…customer-facing digital experiences. As a Staff Backend Software Engineer, you will provide technical leadership across important platform initiatives: shaping architecture, delivering…
Added 1 hour ago
VT
AI Engineer - Agentic AI, Commercial Banking
Vision Talent Co.
Toronto, ON
- Contract
Role: AI Engineer – Agentic AI, Commercial Banking
Added 1 hour ago
IG
Quality Assurance Automation Engineer
Insight Global
Toronto, ON
- $37 to $43 CAD / hour
- Contract
Insight Global is looking for an experienced Automation Engineer to support the design, development, and execution of automated testing solutions. The ideal candidate will have strong web…
Added 1 hour ago
SS
Senior Java Software Engineer
Soho Square Solutions
Toronto, ON
- Contract
Hands-on Senior Full Stack Developer responsible for contributing to the design, development, testing, and maintenance of scalable backend services and REST APIs using Java and Spring Boot;
Added 1 hour ago
E
Ingénérie/Engineering - Ingénieur électrique N3/Electrical Engineer L3
eTeam
Montreal, QC
- $63 to $80 USD / hour
- Other
Title: Ingénérie/Engineering - Ingénieur électrique N2/Electrical Engineer L2

DSI Recruiting

Senior Platform Software Engineer – Backend

Toronto, ON, Canada

$130,000 to $160,000 CAD / year · Full-time

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Applications open in a new tab.

Job details

Pay: $130,000 to $160,000 CAD / year
Job type: Full-time
Apply by: Dec 4, 2026
Experience:  Typically 5+ years of professional backend engineering experience, or equivalent demonstrated capability.
Posting language: English
Posted: Nov 4, 2026

Original job description

Our client is seeking a hands-on Senior Platform Software Engineer (Backend) to implement shared cloud-native services and reusable .NET SDKs for a next-generation enterprise application platform. The role focuses on security, API standards, session management, resilient integrations and developer enablement across independently delivered domain services.

Platform engineering

 Build shared services, middleware, templates and reusable NuGet SDKs using C#, modern .NET and ASP.NET Core.

 Implement authentication integration, BFF session management, token lifecycle controls and tenant-aware, resource-level authorization patterns.

 Establish API standards for validation, versioning, structured errors, idempotency, configuration and service-toservice integration.

 Develop reusable patterns for PostgreSQL access, Redis caching/session storage, observability and resilient messaging as appropriate.

 Contribute to AWS-based deployments, including API Gateway, ECS/Fargate, Aurora/RDS PostgreSQL, ElastiCache, SQS and EventBridge where relevant.

 Publish packages through Azure DevOps Artifacts and support domain teams in adoption without unnecessary coupling.

AI-assisted development and quality

 Use Claude Code or comparable AI coding assistants for design exploration, implementation, refactoring, testing and documentation.

 Apply structured, specification-driven AI-assisted delivery approaches, including AWS AI-DLC 2.0; turn requirements into reviewable plans and acceptance criteria.

 Review and verify AI-generated code for security, correctness, maintainability and compliance with platform standards.

 Contribute to Azure DevOps CI/CD pipelines, automated tests, peer reviews and engineering quality gates.

Required qualifications

 Typically 5+ years of professional backend engineering experience, or equivalent demonstrated capability.

 Strong C#, modern .NET, ASP.NET Core and secure REST API development experience.

 Solid knowledge of OAuth 2.0, OIDC, application security, authentication and authorization.

 Experience with SQL/relational databases, transactions, asynchronous programming and failure-resistant service design.

 Experience with AWS or comparable cloud platforms, automated testing, Git and CI/CD.

 Ability to contribute to architecture and implement production-grade components independently.

Preferred qualifications

 AWS ECS/Fargate, API Gateway, Aurora PostgreSQL, ElastiCache, SQS, EventBridge, Secrets Manager and CloudWatch.

 BFF patterns, enterprise federation (Entra ID/PingFederate), Redis, multitenant authorization and OpenTelemetry.

 Transactional outbox/inbox, event versioning, duplicate-message handling, Flyway, Terraform and Azure DevOps Artifacts.

 Demonstrable hands-on use of Claude Code, GitHub Copilot or similar AI tools; familiarity with AWS AI-DLC 2.0.

Expected deliverables

 Production-ready shared backend components and versioned .NET SDKs.

 Reference services, secure authentication/session and authorization integration patterns.

 Automated tests, pipeline integration, operational instrumentation and adoption documentation.

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More about this job

Responsibilities

Build and maintain shared cloud-native backend services, middleware, reference patterns, and reusable, versioned .NET SDKs for independently delivered domain services. Establish secure API, authentication, session-management, authorization, integration, and operational standards, while supporting AWS deployments, automated quality processes, and adoption by domain teams.

Requirements

Candidates typically have at least five years of backend engineering experience, strong C#, modern .NET, and ASP.NET Core skills, and experience building secure REST APIs. They should understand OAuth 2.0 and OIDC, relational databases, asynchronous and resilient service design, cloud platforms, automated testing, Git, and CI/CD, and be able to independently deliver production-grade components.

Skills

C#
Modern .NET
ASP.NET Core
Secure REST APIs
OAuth 2.0
OpenID Connect
Authentication and Authorization
AWS
PostgreSQL
Redis
Asynchronous Programming
Automated Testing
CI/CD
Azure DevOps
Claude Code

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET
ASP.NET Core
NuGet
Cloud-Native Services
OAuth 2.0
OpenID Connect
Backend for Frontend (BFF)
Session Management
Multi-Tenant Authorization
REST APIs
PostgreSQL
Redis
AWS
API Gateway
ECS/Fargate
Aurora/RDS
ElastiCache
SQS
EventBridge
Azure DevOps
CI/CD
Claude Code
AWS AI-DLC 2.0
OpenTelemetry
Transactional Outbox/Inbox
Flyway
Terraform
Automated Testing
Resilient Messaging

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