Jobs in Canada

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Added 1 month ago
RI
Senior Java Full Stack Developer - Angular | Spring Boot | Microservices
Rose International
Mississauga, ON
- Full-time
Must Have Skills/Attributes: Angular, Banking/Financial, Java, Microservices, Spring Boot
Added 1 month ago
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Senior Java Engineering Lead
Citi
Mississauga, ON
- Full-time
As a Senior Backend Java Engineer, you will design and build scalable backend systems that power critical applications within Citi's technology organization. This hands-on role puts you at…
Added 1 month ago
IC
Guidewire Developer
Infotek Consulting Inc.
Toronto, ON
- Contract
Work Arrangement: Hybrid 1–2 days per week, with remote flexibility for the right candidate · The role is primarily remote/hybrid, with an expectation of approximately 1–2 days per week in an office environment where required
Added 1 month ago
Programmer Analyst
Scotiabank
Toronto, ON
5 years of development experience required
Added 1 month ago
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Senior Java Developer
Citi
Mississauga, ON
- Full-time
We are seeking an experienced and motivated Senior Java Developer to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess…
Added 1 month ago
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VP, Engineering - Network Observability
BlueCat
Canada
- Full-time
Coaching, mentoring, and developing top talent, including managers and senior technical leaders
Added 1 month ago
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Senior Director Information Technology
lululemon
Vancouver, BC
- Full-time
We’re seeking a Senior Director Technology to define and execute a multi year technology strategy that transforms how lululemon merchandises, plans, and deliver products to our guests. This…
Added 1 month ago
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Lead Java Developer, Vice President
Citi
Mississauga, ON
- Full-time
The Applications Development Technology Lead Analyst (Lead Java Developer) is a senior-level position responsible for leading the architectural design, implementation, and continuous…
Added 1 month ago
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Guidewire Policycenter Developer
Hays
Toronto, ON
- Contract
This is a hybrid role, requiring a minimum of 2 days per week onsite at the client's office
Added 1 month ago
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Senior Software Developer in Test- 9 month contract- temporary
Plusgrade
Montreal, QC
- Full-time
We are expanding our core travel tech platforms, and right now our QA team needs a Senior SDET who wants to own automated testing frameworks and pioneer AI-driven testing workflows rather…
Added 1 month ago
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Senior Full Stack Java Engineer
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to join our engineering team and contribute to modern solutions for contact center environments.
Added 1 month ago
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Lead Java Developer
Infoya
Toronto, ON
- $110,000 to $115,000 CAD / year
- Full-time
Work Arrangement: Hybrid (2 days in office)
Added 1 month ago
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Java Developer
Kelly
Mississauga, ON
- Contract
We're looking for an experienced Senior Full Stack Java Developer to build enterprise-scale applications using modern Java and cloud technologies. This role is ideal for developers with…
Added 1 month ago
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Senior Software Developer - Networking (Flow)
Nutanix
Vancouver, BC
- $151,000 to $227,000 CAD / year
- Full-time
…in enterprise cloud, is looking for an outstanding Software Developer to join our Software Defined Security product team, Nutanix…
Added 1 month ago
VS
Associate Software Engineer in Test
Veeva Systems
Toronto, ON
- Full-time
Knowledge in Java, Object-Oriented Methodologies
Added 1 month ago
MC
Senior DevOps Engineer
Modern Campus
Canada
- Full-time
Modern Campus is looking for a Senior DevOps Engineer to build, operate, and improve the cloud infrastructure supporting our higher education products. Our environment is primarily AWS,…
Added 1 month ago
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Senior Software Engineer (L3)
Twilio
Remote, Canada
- Full-time
- Remote
Join the team as Twilio’s next Senior Software Engineer, L3.
Added 1 month ago
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Montréal [Hybrid] - C#/.Net Developer
QUANTEAM - North America (RAINBOW PARTNERS Group)
Montreal, QC · Greater Montreal Metropolitan Area
- Full-time
Our client, a leading financial institution, is seeking a Senior .NET Developer to join a technology team responsible for the development, enhancement, and support of critical applications…
Added 1 month ago
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Senior DevOps Engineer, AI Platform
Network Solutions
Canada
- Full-time
We are looking for a hands-on Senior DevOps Engineer to build and operate the infrastructure powering our AI platforms, agent runtimes, web applications, backend services, APIs, and shared…
Added 1 month ago
Senior Full Stack Developer (12 Months Maternity Contract)
Scotiabank
Toronto, ON
We are looking for a Senior Full Stack Developer who is passionate about building high quality software across both backend and frontend stacks, and who enjoys working end to end - from API…
Added 1 month ago
JT
Senior Java Developer
Jobility Talent Solutions
Toronto, ON
- Contract
Must Have Experiences
Added 1 month ago
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Senior Network Management Software Developer
Telesat
Ottawa, ON
- Full-time
As a Senior NMS Software Developer, you will lead the design, development, and evolution of Lightspeed's Network Management and OSS platforms, enabling service fulfillment, assurance,…
Added 1 month ago
HT
G12 / BB Senior Software Engineer, Performance & Scale
High Tech Genesis
Ottawa, ON
- Contract
We are hiring a Senior Software Engineer, Performance & Scale for an opportunity with one of our technology clients.
Added 1 month ago
BS
Senior ServiceNow Developer
Brainhunter Systems Ltd
Toronto, ON
- Contract
Brainhunter is currently seeking the services of a “Senior ServiceNow Developer ” for a contract opportunity with one of our Valued Clients.
Added 1 month ago
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Software Developer II (Technical Writing)
CNN
Ottawa, ON · Kanata, ON
- Full-time
Apply your proficiency in JavaScript, Java, and Python to contribute to software development when needed.

High Tech Genesis

G12 / BB Senior Software Engineer, Performance & Scale

Ottawa, ON, Canada

Contract

Apply on LinkedIn About employer

Applications open in a new tab.

Job details

Job type: Contract
Posting language: English
Posted: Oct 2, 2026

Original job description

We are hiring a Senior Software Engineer, Performance & Scale for an opportunity with one of our technology clients.

The engineer will join a team working on highly complex, massively scaled software systems, with a strong focus on performance, scalability, reliability, distributed systems, microservices architecture, and automation.

This role is suited to an experienced software engineer who has worked on systems operating at significant scale and is comfortable diagnosing complex performance issues, improving system efficiency, developing automation, and troubleshooting distributed production environments.

The role may involve working across technologies including Go, Python, Ruby on Rails, and React, depending on the area of the platform and project requirements.

Key Responsibilities

Design, develop, and optimize highly scalable software systems and services.
Work on complex distributed systems operating at massive scale.
Analyze system and application performance to identify bottlenecks and opportunities for optimization.
Design, develop, and maintain microservices and distributed architectures.
Improve system latency, throughput, scalability, reliability, and resource utilization.
Investigate and triage complex production issues across highly distributed environments.
Perform root-cause analysis and develop sustainable solutions to recurring system and performance issues.
Develop automation for testing, diagnostics, monitoring, deployment, and operational workflows.
Build tooling and frameworks that improve system observability, diagnostics, performance, and engineering efficiency.
Collaborate with engineering teams on architectural decisions involving scalability, distributed systems, and performance.
Work across application code, backend services, APIs, infrastructure, and engineering tooling as required.
Participate in code reviews, design reviews, testing, debugging, and production support.
Identify opportunities to improve engineering processes through automation and technical innovation.

Required Qualifications

Strong professional experience in software engineering.
Hands-on experience designing, developing, and supporting large-scale distributed systems.
Strong experience with performance engineering, scalability, and system reliability.
Experience working with microservices architectures.
Experience troubleshooting and triaging complex issues in highly scaled production environments.
Strong programming experience in one or more languages such as Go, Python, Ruby, Java, C++, or similar.
Experience with automation, scripting, and engineering tooling.
Strong understanding of concepts including latency, throughput, concurrency, fault tolerance, scalability, and reliability.
Experience working with APIs, service-to-service communication, and distributed application architectures.
Strong debugging, analytical, and problem-solving skills.
Ability to work effectively across complex technical environments and engineering teams.

Technical Environment

Experience with several of the following technologies and concepts is valuable:

Programming Languages: Go, Python, Ruby, Java, C++, or similar
Web / Application Frameworks: Ruby on Rails, React, and modern web application frameworks
Architecture: Microservices, distributed systems, service-oriented architectures
Containers & Orchestration: Docker, Kubernetes
Cloud & Infrastructure: AWS, Azure, GCP, or comparable environments
APIs & Services: REST APIs, service-to-service communication, distributed services
Databases: Relational and NoSQL databases
Messaging & Streaming: Kafka, RabbitMQ, or similar technologies
Caching: Redis, Memcached, or similar technologies
Observability: Prometheus, Grafana, OpenTelemetry, ELK/EFK, or comparable platforms
Performance Engineering: Profiling, benchmarking, load testing, capacity planning, performance optimization
Automation & CI/CD: Jenkins, GitHub Actions, GitLab CI, or similar tools
Version Control: Git

Preferred Qualifications

Experience engineering and supporting systems at massive scale.
Experience with high-throughput and low-latency systems.
Strong experience with performance profiling and optimization of distributed applications.
Experience with Go and/or Python in large-scale systems.
Experience with Ruby on Rails and/or React in full-stack application environments.
Experience with Kubernetes and containerized microservices.
Experience with cloud-native architectures and distributed infrastructure.
Experience with observability, monitoring, and distributed tracing.
Experience investigating production incidents and performing root-cause analysis.
Experience developing automation, internal tooling, and engineering frameworks.
Familiarity with reliability engineering and performance testing practices.
Experience working in an Agile software development environment.

What You'll Bring

We are looking for a senior engineer who is comfortable solving complex performance, scalability, reliability, and distributed-systems challenges at massive scale.

You should be able to work across application code, services, APIs, infrastructure, and engineering tooling to understand how systems behave under significant scale and load.

Strong analytical skills, hands-on debugging experience, programming expertise, and the ability to develop automation and tooling are important for this role.

Apply on LinkedIn About employer

More about this job

Responsibilities

Design, develop, and optimize large-scale distributed systems and microservices, improving performance, scalability, latency, throughput, and reliability. Diagnose production issues, perform root-cause analysis, and build automation, tooling, and observability capabilities in collaboration with engineering teams.

Requirements

Requires substantial software engineering experience, including hands-on work designing and supporting large-scale distributed systems, microservices, and performance- and reliability-focused applications. Candidates should have strong programming, debugging, automation, and analytical skills, with experience troubleshooting complex production environments.

Skills

Distributed Systems
Performance Engineering
Scalability
System Reliability
Microservices
Go
Python
Ruby
Java
C++
Automation
Troubleshooting
Root-Cause Analysis
Kubernetes
Observability
Performance Optimization

Visa sponsorship

Not detected in the job text

Keywords

Go
Python
Ruby
Ruby On Rails
React
Java
C++
Microservices
Distributed Systems
Performance Engineering
Scalability
Reliability Engineering
Docker
Kubernetes
AWS
Azure
GCP
REST APIs
Relational Databases
NoSQL Databases
Kafka
RabbitMQ
Redis
Memcached
Prometheus
Grafana
OpenTelemetry
ELK/EFK
CI/CD
Git

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Work requirements

Jobs in Canada