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Added 1 day ago
M
Senior Full Stack Software Engineer - Capital Markets
Manulife
Toronto, ON
- Full-time
Senior Full-Stack Engineer – Capital Markets & Derivatives
Added 1 day ago
PG
Full Stack Engineer I
Paymentus Group Inc
Richmond Hill, ON
- Full-time
The Senior Full Stack Java Engineer has an expert understanding of enterprise platforms and seeks to transform client requirements into core features of the platform. Responsibilities…
Added 1 day 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 day ago
C
Senior Fullstack Developer
CIBC
Toronto, ON
- Full-time
Join our EAML Emerging Technology team as a Senior Application Developer (Full Stack), where you'll play a key role in designing, developing, and enhancing innovative applications that…
Added 1 day ago
M
Manager Engineering
Manulife
Toronto, ON · Waterloo, ON
- Full-time
Provide program-level updates and insights to senior technology and business leaders, ensuring visibility into progress, risks, and issues.
Added 1 day 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 day ago
T
Senior Full Stack Developer (12 Months Maternity Contract)
Tangerine
Toronto, ON
- Full-time
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 day ago
RI
Senior Java Microservices Developer (Spring Boot, AWS Kubernetes)
Rose International
Mississauga, ON
- Full-time
Job Title: Senior Java Microservices Developer (Spring Boot, AWS Kubernetes)
Added 1 day ago
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Senior Software Developer (Front End), Trading
Wealthsimple Technologies
Remote, Canada
- $151,200 to $189,000 CAD / year
- Full-time
- Remote
As a Senior Front End Engineer on our trading and investing teams, you'll own meaningful slices of the experiences at the heart of Canada's first zero-commission brokerage - the surfaces…
Added 1 day 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 day ago
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Co-op/ Intern Application Security Analyst
Kinaxis Inc.
Ottawa, ON
- Internship
Monitor application security trends and evolving technologies and keep senior management informed about related application security issues and implications for Kinaxis
Added 1 day ago
NS
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 day 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 day 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 day ago
JT
Senior Java Developer
Jobility Talent Solutions
Toronto, ON
- Contract
Added 1 day ago
T
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 day 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 day ago
SD
Integration Developer – APM / Cloud
SRM Digital
Canada
- Contract
We are seeking a Senior Integration Developer with 7+ years of experience in software development, enterprise application integration, API development, and cloud-based solutions.
Added 1 day ago
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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 2 days ago
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SR Java/Python (SSO / PingFederate)
Cognizant
Toronto, ON
- Full-time
Senior Developer – Java/Python (SSO / PingFederate)
Added 2 days ago
SD
Senior Java Developer
Symbiotic Digital
Toronto, ON · Downtown Toronto (Ryerson), Ontario
- Contract
We are seeking an experienced Software Developer to
Added 2 days ago
C
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.
Added 2 days ago
OS
Senior Java Backend Developer
Open Systems Technologies
Mississauga, ON
- Contract
We are looking for multiple Senior Java Backend Developers. These are Hybrid contract to Hire roles in Mississauga. If you have the relevant skills Please apply with a copy of your updated…
Added 2 days ago
T
Senior Databricks Data Architect
TheCorporate
ON · Ontario, Canada
- Contract
Programming experience (preferably Java/Pyspark/Python) is a must
Added 2 days ago
Senior Software Engineer
Spotify
Toronto, ON
Spotify is looking for a Senior Software Engineer to join the Authorization team within Platform. Our team builds and operates the authorization and permissioning systems that enable…

High Tech Genesis

G12 / BB Senior Software Engineer, Performance & Scale

Ottawa, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 1, 2026
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 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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