Principal Backend Engineer
Full-time
USMobile
US Mobile is building the future of wireless communication. The goal: one unified network open to any person and any device, worldwide. Connection without walls.
We’re getting there by empowering customers. All three major networks on one phone and one plan, plus home internet from Starlink. No lock-in. No commitments. Custom fit plans at every price point. 24/7 customer support with real people, empowered to help. We get real-time feedback from Reddit , surveys, and customer support informing product roadmaps and everything we do. It’s working — Consumer Reports named us the top-rated mobile carrier two years in a row.*
And we’re building innovative systems that scale. A network agnostic tech stack. Agile, cross-functional teams built on trust and mutual respect. This work isn’t for everyone. If you work fast, flexibly, and collaboratively — without compromising standards — we want to hear from you.
We're looking for an exceptional backend engineer and hands-on architect to help us scale and connect millions of devices to wireless networks. The projects and potential impact are incredible. We're looking for talented, ambitious, and entrepreneurial team members who are excited to tackle these challenges.
Vacancy posted 8 days ago
Similar jobs that could be interesting for youBased on the Principal Backend Engineer in Toronto, ON vacancy
- ...What you'll do: Design and implement backend architecture following best software engineering principles Develop clean, efficient code with tests ensuring code quality Participate in code reviews and invite others to review your code Champion the importance of...SuggestedFull timeWork at officeWork from home
$160k - $220k per year
...endpoint, anywhere in the world. Our organization is comprised of engineers who thrive at the intersection of deep client-side platform... ...closely with Product Management, Engineering Directors, and Principal Architects to translate strategic business objectives into actionable...SuggestedLong term contractLocal areaWorldwide$180k - $220k per year
...Xello is looking for a Principal Engineer This role is a remote role, looking for candidates within Canada only, working in Eastern Time Zone... ...expertise across our technical stack, including C#/.NET for backend development, TypeScript and Angular for modern single-page applications...SuggestedLong term contractRemote workFlexible hours- ...Responsibilities Partner with Product Management, Engineering Directors, and Principal Architects to translate strategic objectives into scalable technical roadmaps. Design and implement Java platform features and services from conception through deployment. Define...SuggestedLong term contractFull time
$180k - $210k per year
...General Information: Job Title: Principal Engineer Location: Toronto (Onsite/ Hybrid) Job... ...Have: ~10+ years building cloud-native backend or platform systems ~ Proven 0-to-1... ...pipelines, agentic workflows) Workflow engines, orchestration systems, or DAG-based processing...SuggestedLong term contractFull timeInternshipWork at officeImmediate startRemote workFlexible hours- ...and supporting production-ready products from scratch. ~5+ years of professional experience with Java. ~6+ years of experience in backend development. ~ Quick learner with an ambitious and results-driven personality. ~ Excellent communication and organizational...Full timeInternshipImmediate start
- ...Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that evaluate AI models on...Remote jobFor contractors
- ...and terabytes of data per day? Zynga is looking for a Software Engineer to join the Data Ingestion team in our Analytics organization. The... ...You'll Do: Design, build and own data-driven large-scale backend services to be consumed by clients across multiple platforms (mobile...Local area
$175k - $210k per year
...General Information: Job Title: Principal Engineer - Zynque Location: Toronto (Onsite/ Hybrid) Job Type: Full-Time Hiring Timeline... ...Must Have: ~10+ years building and operating cloud-native backend or platform systems ~ Owned the scaling of a production SaaS...Long term contractFull timeInternshipLive InWork at officeImmediate startRemote workFlexible hours- ...Certified Great Place to Work in 2021, 2022 and 2023. Introduction: AppLovin's Array team is seeking an experienced Staff Backend Software Engineer to join our team. Array is a seamless, end-to-end app management suite that delivers more value for mobile operators and end...Work from homeFlexible hours
$150k - $200k per year
Job Responsibility: Stan is the Shopify for Content Creators , empowering anyone to make a living working for themselves on the internet. We're a team of high-performers backed by the top VCs (Forerunner, Pear and Norwest) and angel investors (Kevin Hartz, Michael Ovitz...Full time$105k - $125k per year
...General Information: Job Title: Backend Engineer III Location: Toronto (Onsite/ Hybrid) Job Type: Full-Time Hiring Timeline:... ...systems or complex data models Experience building workflow engines, pipelines, or DAG-based processing Familiarity with CI/CD,...Long term contractFull timeInternshipWork at officeLocal areaImmediate startRemote workFlexible hours- ...Principal Engineer Location: Toronto/GTA preferred; Ottawa considered Employment Type: Full-time, permanent Work Model: Remote within... ...equivalent level. Deep expertise in distributed systems, backend architecture, APIs, microservices, cloud infrastructure, and event...Remote jobLong term contractPermanent employmentFull timeInternshipFlexible hours
$175k - $200k per year
...the Role Big Viking Games is hiring a Principal Engineer, Agentic Products & Workflows to build... ...architecture, orchestration, data models, backend services, APIs, evaluation loops, human... ...queues, event-driven systems, workflow engines, or durable execution. Experience building...Full timeInternship$50 - $53 per hour
...Job Responsibility: Job Title: Platform Engineer Location: Toronto Downtown,Canada Job Type: Full time contract Department: Engineering... ...microservices using Docker containers. Develop and maintain backend services using Python, adhering to scalable and maintainable...Hourly payFull timeContract workRelocationMonday to friday$160k - $220k per year
...This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. The Staff Software Engineer Opportunity Passkeys, powered by FIDO2 WebAuthn, are revolutionizing how people authenticate—bringing us into a passwordless future...Local areaWorldwide$160k - $220k per year
...technical design discussions, influence the roadmap, and make strategic decisions that improve product health and team velocity. Mentor engineers through code reviews, knowledge sharing, and strong engineering practices. Use telemetry and observability tools to troubleshoot...- ...the Fortune 100, trust the Netskope One platform, its Zero Trust Engine, and the powerful NewEdge network to gain full visibility and... ...products with speed and quality. We are looking for an experienced Principal Software Engineer to own and drive our CI/CD strategy, with a...
- ...Principal Software Engineer – CoCounsel CoCounsel is our most advanced AI offering to date – combining generative and agentic AI capabilities... ...Engineer, you will set the technical direction for the backend, AI orchestration, and identity systems that turn frontier...Long term contractWork at officeLocal areaFlexible hours2 days per week3 days per week
$185k - $285k per year
...ingestion platform underneath it all. It is a mix of product and backend engineering shaping the APIs and deeper backend components our customers... ...Lambda SQS Kafka EventBridge). Orchestration and workflow engines (Step Functions Temporal). JVM languages for cross-team...Full timeInternshipWork at officeFlexible hours$92.1k - $153.5k per year
...Job Responsibility: Permanent Full Time Canada Life is seeking a Principal Engineer (Director level) to drive our adoption of Cloud. This role will be pivotal in building and operationalizing modern, cloud platforms and applications. The successful candidate will combine...Permanent employmentFull time- ...this role is only open to Toronto/GTA-based candidates. About the role Were looking for a software engineering intern whos excited to tackle complex backend challenges. This is an opportunity to work on real production systems contributing to the integration platform...InternshipWork at office
$175k - $200k per year
...application, data, and AI teams to build, deploy, and scale software efficiently and securely. We are looking for an experienced Principal Platform Engineer to drive the development of our Internal Developer Platform (IDP). The ideal candidate started their career as a...Full timeInternshipWork at office$180k - $210k per year
...About Us We’re looking for a Staff Engineer - User Experience (Backend) to join our Patient Platform team and shape the systems that power patient-facing experiences across our health technology platform. This team owns the APIs, orchestration services, and communication...Contract workInternshipLocal areaImmediate startRemote workFlexible hours- ...AI-native organization. We expect every engineer to use AI tools and agentic systems as a... ...We are seeking a passionate and resilient Principal Graphics Engineer to own a foundational piece... ...between Android/Linux graphics, browser engines, and WebGL/WebGPU. The role demands first...Internship
- ...retention tools to prevent customer churn. What you'll do As an engineer on the team, you'll be responsible for shaping and building a... .... Minimum requirements ~2–12+ years of experience in backend software development ~ Ability to write high-quality code (in...Contract workInternship
$170k - $220k per year
...with their work from any endpoint, anywhere in the world. We engineer the end-to-end device experience—from our flagship FastPass ,... ...innovations on the Okta Engineering Blog . Staff Software Engineer- Backend , Device Identity We seek a dynamic and influential Staff...Long term contractLocal areaWorldwide$85k - $105k per year
...Xello is looking for a Backend Engineer This role is a remote role, looking for candidates within Canada only. __ Xello is looking for a Backend Engineer to help build and support the backend services, APIs, and data-intensive systems that power our content management...Full timeRemote workFlexible hours- ...Engagement Manager, Guided Assurance, and Confirmation. As a Principal Software Engineer for Cloud Audit Suite, you will be the technical architect... ..., support and postmortems. Design and own AI‑first backend systems ~ Own the end-to-end architecture and design of backend...Long term contractFull timeWork at officeLocal areaFlexible hoursShift work
$154k - $232k per year
...empowered to do your best work. Job Summary As a Principal Machine Learning Engineer, you will design, build, deploy, and scale machine learning... ...ML services and deploy them using Docker, Kubernetes, App Engine, or virtual machines Apply strong knowledge of NLP fundamentals...Full timeWork at office
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Principal Backend Engineer. Be the first to apply!
Related searches
- director software engineering Toronto, ON
- project engineer assistant project manager Toronto, ON
- engineering project manager Toronto, ON
- general engineer Toronto, ON
- directeur ingénierie Toronto, ON
- mechanical engineering director Toronto, ON
- chief power engineer Toronto, ON
- mechanical engineering project manager Toronto, ON
- chief engineer Toronto, ON
- backend software developer Toronto, ON