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Added 10 mins ago
Lead Aerospace Engineer
Remote Robotic
Ottawa, ON · Kanata, ON
$110,000 to $130,000 CAD / year
Full-time
Airmetal is seeking a Lead Aerospace Engineer to direct the design of a new uncrewed aircraft from requirements definition through configuration selection, aerodynamic design, prototype…
Added 11 mins ago
Senior Software Developer
Royal Bank of Canada
Toronto, ON
Full-time
We are looking for a top notch software engineer who is a great team player and obsessive about the quality of their code and delivered service. This role requires someone who can roll up…
Added 11 mins ago
Lead DevOps Engineer
Royal Bank of Canada
Toronto, ON
Full-time
…streamlining the software delivery lifecycle? As a Lead DevOps Engineer, you will play a critical role in bridging the gap between development and operations, ensuring that our applications…
Added 11 mins ago
Senior Manager, Engineer & Build
Royal Bank of Canada
Toronto, ON
Full-time
Partner with Platform/SRE on SLIs/SLOs, incident response, and postmortems.
Added 11 mins ago
Lead Engineer - Systems Dynamics
Beacon Software
Remote, Canada
Full-time · Remote
Own the platform. OCI compute and databases (container and pluggable), 60 to 80 site-to-site VPNs, OS and database patching, nightly backups, DR. About a dozen cloud customers today, more…
Added 11 mins ago
DevOps Engineer, AFT
Amazon
Toronto, ON
…fulfill millions of orders every day! We're seeking a talented engineer who is a technology generalist, thrives in dynamic environments, and is passionate about solving complex, ambiguous…
Added 24 mins ago
AWS Architect/ Tech Lead
Deloitte
Toronto, ON
Full-time
…migration guiding principles to establish a scalable AWS-based data platform vision aligned to business…
Added 25 mins ago
DevOps Manager
Raise
Brampton, ON
Full-time
The Lead Platform Engineer in this role will spearhead our clients cloud infrastructure and platform initiatives. In this role, you will lead a distributed engineering team, drive the…
Added 25 mins ago
DevOps Engineer
Raise
Calgary, AB
Full-time
Nice to have certifications DevOps Engineer Expert (Exam AZ-400), Certified Kubernetes Administrator (CKA) or Certified Kubernetes Application Developer (CKAD), HashiCorp Certified, Splunk…
Added 27 mins ago
Systems Engineer - Managed Services
Exchange Technology Services Inc.
Winnipeg, MB
The Systems Engineer is responsible for the successful delivery of cloud-based solutions and infrastructure projects, with a key focus on Microsoft Azure and Microsoft 365 (Office 365)…
Added 42 mins ago
Cloud Operations & Security Engineer
Limelight Software
Toronto, ON
Full-time
Limelight Software is hiring an AWS Cloud Operations and Security Engineer to run and secure the infrastructure behind our SaaS platform. You’ll work hands-on with AWS and Linux production…
Added 42 mins ago
Data Analytics & Automation Engineer
Aon Corporation
Calgary, AB · AB · Vancouver, BC · Toronto, ON · Edmonton, Alberta
Full-time
As a Data Analytics & Automation Engineer, you will collaborate with business leaders, analytics professionals, operational collaborators, and technology teams. You will deliver scalable…
Added 55 mins ago
Staff Software Engineer (Architecture)
Lantern
Vancouver, BC
Full-time
Lantern is seeking a Staff Software Engineer to join our expanding Architecture team. This is a strategic and highly visible role focused on driving architectural consistency, elevating…
Added 55 mins ago
Senior AI Engineer
Charger Logistics Inc.
Brampton, ON
Full-time
We are looking for a highly motivated AI Engineer to join our team based out of our Brampton office and contribute to the development of AI-driven solutions for various departments. This…
Added 1 hour ago
Staff Software Engineer (Architecture)
Lantern
Vancouver, BC
Lantern is seeking a Staff Software Engineer to join our expanding Architecture team. This is a strategic and highly visible role focused on driving architectural consistency, elevating…
Added 1 hour ago
Principal Engineer
Appnovation
Toronto, ON
Full-time
We are seeking a Principal Engineer to own the end-to-end technical coherence of an enterprise marketing technology ecosystem for our life sciences clients. In most large organizations,…
Added 1 hour ago
Senior Site Reliability Engineer
Zodiac Solutions, Inc
Toronto, ON
Full-time
As an Intermediate Site Reliability Engineer, you will support and continuously improve enterprise Azure and Databricks platforms. The role focuses on production reliability, monitoring,…
Added 1 hour ago
AI Applied Engineer
Elevation Capital
Canada
Full-time
TEThe ideal candidate is an engineer who has shipped real products in small, fast-moving teams and is comfortable owning problems end-to-end with minimal directio
Added 1 hour ago
Senior Cloud Infrastructure Engineer
Signal 1
Toronto, ON
Full-time
Signal 1 helps health systems accelerate AI adoption with a category defining technology platform. Signal 1’s first product, the AI Management System (AIMS), gives health system leaders…
Added 1 hour ago
MAPLE Systems Engineer
National Research Council Canada
Ottawa, ON
We are looking for a MAPLE Systems Engineer to join the Aerospace Research Centre and support the development, modification, integration, certification, and operation of the NRC’s MAPLE -…
Added 1 hour ago
Systems Administrator
Eckler Ltd. / Eckler ltée
Toronto, ON · Greater Toronto Area, Canada
$82,000 to $95,000 CAD / year
Full-time
Reporting to the Senior Infrastructure Engineer, the Systems Administrator supports the security, reliability, performance, and continuous improvement of Eckler’s hybrid technology…
Added 1 hour ago
Cloud Engineer
Morson Edge (Canada)
Oakville, ON
$95,000 to $135,000 CAD / year
Full-time
Morson Edge is seeking an experienced Cloud Engineer to join a growing infrastructure team. This role is ideal for a cloud professional with strong Microsoft Azure expertise who is…
Added 1 hour ago
Lead Engineer
Raymond James
Vancouver, BC
Full-time
The Lead Engineer is the senior technical engineering lead within Digital Workplace & Platform, responsible for improving the stability, resilience, automation, control effectiveness, and…
Added 2 hours ago
AI Engineer, Entry Level (Canada)
Jobright.ai
Canada
Full-time
Jobright is a rapidly growing AI job search platform in the U.S. that is dedicated to transforming the job search experience. They are seeking an entry-level AI Engineer to build and refine…
Added 2 hours ago
Platform Engineer
Hunter Bond
Montreal, QC
Full-time
You will be responsible for designing, monitoring, and scaling platform infrastructure - including the Kubernetes-based orchestration layer underpinning compute-intensive research and…

JohnIsah

Senior Software Engineer

Canada

Job type: Full-time
Experience: 4+ years of experience in software development with a strong focus on backend technologies
Posting language: English
Posted: Sep 25, 2026

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Original job description

Why Mozilla?

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders - only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

About This Role

As a Senior Software Engineer on the Ecosystem Services Team, you’ll build and own back-end systems and the integrations that keep our services running, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production. You'll do this while collaborating closely with frontend engineers, product managers, CloudEng, and UX and design partners to deliver reliable features.

We are looking for engineers who treat the systems they build as their own: people who are comfortable owning a service end to end, from writing the code to verifying it works as intended in production and monitoring its health.

We are hiring for multiple Ecosystem Services Team back-end teams - each solving their own unique challenges to make the web better for everyone. More details about all hiring teams will be shared in the interviews.

About Ecosystem Services

Ecosystem Services builds and operates the back-end platforms that power Mozilla products and services, with a focus on privacy, security, and delivering critical functionality to Firefox and millions of users worldwide.

Our portfolio spans a diverse set of platforms and services. Representative examples include Privacy Services, which provides the APIs and infrastructure behind Mozilla VPN, Relay (email and phone aliasing), and Monitor (data breach detection and remediation); AutoPush, Mozilla's Web Push platform for securely delivering notifications and real-time updates to Firefox clients; and Remote Settings, Mozilla's platform for delivering configuration updates to Firefox outside the regular release cycle. Together with many other backend platforms across the organization, these services help deliver secure, reliable experiences to Mozilla users every day.

Our teams own services end-to-end from designing and building distributed systems, to operating them in production, improving reliability, and evolving the cloud infrastructure they run on. We work closely with product, frontend engineering, Cloud Engineering, UX, and design partners to build resilient systems that make the web better for everyone.

We're hiring backend engineers across multiple Ecosystem Services teams, each tackling different technical challenges while sharing a culture of ownership, collaboration, and operational excellence. More details about the specific teams and domains will be shared during the interview process.

What You’ll Do

Lead backend development, building and maintaining server-side logic
Take real ownership of the services you work on: deploy them, operate them, and keep them healthy in production rather than handing them off
Work closely with our CloudEng Team to maintain and improve production environments, including monitoring and alerting with tools such as OpenTelemetry, Sentry, Prometheus, and Grafana
Participate in an on-call / off-hours support rotation, triaging and resolving production issues, partnering with CloudEng and support teams to investigate incidents, address bug reports, and keep the application running reliably
Periodically rotate into a support role, handling releases, dependency updates, and incoming work requests from customer support and other stakeholders
Thoughtfully apply AI-assisted development tools to move faster and raise quality, while maintaining good judgment about where they fit and where they don't
Partner with and support stakeholders (e.g. front-end, platform), ensuring backend systems, APIs, and data contracts meet their needs
Partner with frontend and cross-functional teams to align on project goals, contribute to API design, and ensure backend systems, APIs, and data contracts meet their needs
Participate in code reviews to maintain high standards of code quality and system reliability
Participate in security and privacy reviews, ensuring all data protection measures meet compliance standards

What You’ll Bring

4+ years of experience in software development with a strong focus on backend technologies
Strong professional experience with Python , TypeScript/Node.js, or Rust building back-end services and confidence leading back-end engineering projects.
Proficiency with PostgreSQL and SQL query optimization, including relational schema design and migrations with a query builder such as Knex
Hands-on DevOps experience on Google Cloud Platform (GCP), with Docker-based build and deploy pipelines. You are comfortable deploying, operating, and troubleshooting services in the cloud rather than handing that responsibility to someone else
Hands-on experience with observability and monitoring tooling such as Sentry and Grafana
A pragmatic commitment to shipping quality work. You care about the quality and reliability of what you ship, you make sensible trade-offs under real constraints, and you consistently move work to and into production.
Strong engineering judgment. You can navigate ambiguity, weigh trade-offs, and make sound decisions with incomplete information, and you know when to ask for input
A genuine ownership mindset. You are excited to own a service end to end and have a track record of operating what you build in production, including experience with on-call or off-hours production support
Experience mentoring junior engineers and driving technical excellence in code quality, testing, and process improvements

Bonus Points For Experience With

Performance / load testing
Experience with IaC tools such as Terraform and Kubernetes
Open-source contributions or personal engineering projects
Django experience

What You’ll Get

Generous performance-based bonus plans to all eligible employees - we share in our success as one team
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
Quarterly all-company wellness days where everyone takes a pause together
Country specific holidays plus a day off for your birthday
One-time home office stipend
Annual professional development budget
Quarterly well-being stipend
Considerable paid parental leave
Employee referral bonus program
Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

Group: D

Req ID: R3234

Hiring Ranges

Canada Tier 1 Locations

$104,000 - $139,000 CAD

Canada Tier 2 Locations

$95,000 - $126,000 CAD

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More about this job

Responsibilities

Lead the development and maintenance of backend services, APIs, and distributed systems, and own their deployment, production operations, monitoring, and reliability. Collaborate with frontend, product, Cloud Engineering, and design partners on features and API design, while participating in on-call support, code reviews, and security and privacy reviews.

Requirements

Requires at least four years of software development experience focused on backend technologies, professional experience with Python, TypeScript/Node.js, or Rust, and proficiency with PostgreSQL and SQL optimization. Candidates should have hands-on GCP and Docker deployment experience, observability skills, production ownership and on-call experience, sound engineering judgment, and experience mentoring junior engineers.

Skills

Backend Development
Python
TypeScript
Node.js
Rust
PostgreSQL
SQL Query Optimization
Relational Schema Design
Google Cloud Platform
Docker
Observability
Sentry
Grafana
Distributed Systems
Production Operations
Mentoring

Benefits

Performance-Based Bonus
Medical, Dental, and Vision Coverage
Retirement Contributions
Wellness Days
Paid Holidays
Birthday Leave
Home Office Stipend
Professional Development Budget
Well-Being Stipend
Paid Parental Leave
Employee Referral Bonus
Life and Disability Insurance
Employee Assistance Program

Visa sponsorship

Not detected in the job text

Keywords

Backend Services
Python
TypeScript
Node.js
Rust
PostgreSQL
SQL
Knex
Google Cloud Platform
Docker
OpenTelemetry
Sentry
Prometheus
Grafana
Distributed Systems
Cloud Infrastructure
Monitoring
Alerting
On-Call Support
API Design
Data Contracts
Code Reviews
Security Reviews
Privacy Reviews
Performance Testing
Load Testing
Terraform
Kubernetes
Django
Open-Source Software

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