Jobs in Canada

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Added 4 days ago
LG
SITE COSTING CLERK - NAPANEE/BELLEVILLE
Laframboise Groupe
Greater Napanee, ON · Napanee, ON
- Contract
Be Part of Something Bigger: Contribute to the success of our clients in various sectors, including petrochemical, mining, power, and more.
Added 4 days ago
MI
Senior Controls Engineer
Martinrea International
Brampton, ON
- Full-time
…time monitoring, production reporting, OPC-UA, Ignition, SQL, Power BI, or similar systems is an…
Added 4 days ago
O
Lead Principal Platform Software Engineer
Oracle
Toronto, ON
- $123,900 to $203,600 CAD / year
Software Development and Coding - Design, Testing, and Optimization:
Added 4 days ago
Senior Software Engineer - iOS
OpenTable
Toronto, ON
Architect, build, and ship robust, production-quality native iOS features that power day-to-day restaurant floor operations.
Added 4 days ago
SM
RQ11860 – Database Administrator – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Work Arrangement: Onsite – 5 Days per Week
Added 4 days ago
MC
AI & Automation Developer
Morgan Construction and Environmental Ltd.
AB · Edmonton, AB
- Full-time
Hands-on experience with Azure (Functions, Container Apps, Data Factory or Fabric) and Microsoft 365 / Power Platform
Added 4 days ago
O
Lead Principal Core Infrastructure Engineer
Oracle
Toronto, ON
- $123,900 to $203,600 CAD / year
- Full-time
Added 4 days ago
M
Gestionnaire des ressources énergétiques / Energy Resource Manager
Microsoft
Quebec, QC
- $69,200 to $129,600 CAD / year
- Full-time
Added 4 days ago
M
Swarm Data Platform Solution Engineer
Microsoft
Toronto, ON
- $128,000 to $222,400 CAD / year
- Full-time
Certification in relevant technologies or disciplines (e.g., Office 365, Power BI, Azure Architect and Development exams, Cloud Platform Technologies, Information Security, Architecture).
Added 4 days ago
V
Specialist, Electrical Engineer
Vale
Sudbury, ON · Greater Sudbury, ON,CA
- Full-time
We are currently seeking a Specialist Engineer, Electrical to join our Power Department in Sudbury. This is a permanent position for an existing vacancy.
Added 4 days ago
B
Engineer in Training (EIT)
Barminco
Dease Lake 9, BC
- Full-time
Must have good radio etiquette and strong communications skills
Added 4 days ago
GC
Senior Software Engineer
Game Companies
Vancouver, BC
- Full-time
…orchestrators transforming interactive entertainment. Together, we power the platforms, AI-driven tools, live services, and infrastructure that ensure global scale, secure player…
Added 4 days ago
AG
Distribution Engineer / Senior Engineer
ATCO Group
AB · Grande Prairie, AB
- Full-time
Reporting to the Supervising Engineer, this position is responsible for ATCO Electric’s 25kV operational planning of the distribution grid. This area of responsibility will require…
Added 4 days ago
Maintenance Assistant
Public Service Delivery
Winnipeg, MB
Must possess and maintain a satisfactory Criminal Record Check · Must possess a valid Class 5 Drivers Licence and be able to work in other locations within the Division as needed
Added 4 days ago
ME
Field Coordinator Intern - MEC Transportation - Canada (Summer 2027)
Mass. Electric Construction Co.
Toronto, ON
- Internship
Must have a valid Driver’s License
Added 4 days ago
ME
Field Coordinator Intern - MEC Transportation - Canada (Summer 2027)
Mass. Electric Construction Co.
Ottawa, ON
- Internship
Must have a valid Driver’s License
Added 4 days ago
GG
C-Commissioning Operator-HPU
Grizzlytrek Group
AB
- Contract
Certifications (Academic, Professional): Power Engineer (min. 4th Class)
Added 4 days ago
GG
C-Commissioning Permitting & LOTO Operator
Grizzlytrek Group
AB
- Contract
Certifications (Academic, Professional): Power Engineer (min. 4th Class), or Journeyman Interprovincial Red Seal, or Process Technician/Technologist, or Professional Process Engineer, or…
Added 4 days ago
GO
Maintenance Assistant
Government of Manitoba
Winnipeg, MB
- $49,649 to $59,812 CAD / year
- Full-time
Must possess and maintain a satisfactory Criminal Record Check · Must possess a valid Class 5 Drivers Licence and be able to work in other locations within the Division as needed
Added 4 days ago
Q
Senior Engineer - Substation Protection & Control
Qualus
Vancouver, BC
- Full-time
Power Your Future with Qualus as a Senior Protection & Control Engineer to join our well-established Protection & Control team of engineers and designers, in our Transmission and…
Added 4 days ago
T
Sr. Backend Engineer - Node.JS
Telna
ON · Ontario, Canada
- Full-time
You will be a senior technical owner of the backend services behind our eSIM products. These services power consumer travel eSIM apps and white-labeled apps and web experiences for mobile…
Added 4 days ago
AM
Principal Software Development Engineer
Advanced Micro Devices, Inc
Markham, ON
- Full-time
At AMD, we believe technology has the power to solve the world’s most important challenges. From advancing healthcare and scientific discovery to powering AI and the technologies people…
Added 4 days ago
GG
C-Commissioning Operator (Power Block)
Grizzlytrek Group
AB
- Contract
Certifications (Academic, Professional): Power Engineer (min. 4th Class) [assumed to match the other ads; confirm]
Added 4 days ago
GG
C-Commissioning Operator-Air Seperation Unit (ASU)
Grizzlytrek Group
AB
- Contract
Certifications (Academic, Professional): Power Engineer (min. 4th Class)
Added 4 days ago
GG
C-Commissioning Operator-Utilities (Water) Unit
Grizzlytrek Group
AB
- Contract
Certifications (Academic, Professional): Power Engineer (min. 4th Class)

Telna

Sr. Backend Engineer - Node.JS

ON, Canada
Ontario, Canada, Canada

Full-time

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Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Dec 10, 2026
Posting language: English
Posted: Nov 10, 2026

Original job description

About Telna

Telna is a global connectivity company that provides eSIM, IoT and mobile network technology to travel brands, mobile network operators and enterprises. Our engineering team builds the platforms and services that let millions of people get connected in seconds, wherever they are in the world.

About the Role

You will be a senior technical owner of the backend services behind our eSIM products. These services power consumer travel eSIM apps and white-labeled apps and web experiences for mobile network operators, all built on a shared multi-tenant platform. They cover catalog and pricing, checkout and payments, order and eSIM lifecycle management, customer data, fraud and risk controls, and the data feeds that analytics and finance teams depend on.

This is a hands-on role with significant architectural influence. You will design services that are correct under failure, integrate with many external systems (payment providers, carrier and eSIM platforms, CRM and marketing tools), and shape how we onboard each new operator onto the platform. You will set backend standards for the team, mentor engineers across experience levels, and work directly with product, frontend, mobile, data and QA.

What You'll Do

Design, build and operate backend services and APIs in Node.js and TypeScript for catalog, pricing, checkout, orders, eSIM provisioning and usage management.
Evolve our multi-tenant platform so that each new operator or partner can be onboarded through configuration rather than new code, with per-tenant pricing, branding, feature flags, payment methods and data isolation.
Build and maintain payment integrations for a range of regional providers, including card processors, mobile money and local gateways. Own idempotency, webhook handling, retries, refunds and reconciliation, so that money movement is correct even when providers fail or repeat callbacks.
Integrate with carrier and eSIM provisioning platforms and other third-party systems, wrapping unreliable external APIs in clear contracts with timeouts, circuit breakers, queues and replay.
Own pricing and configuration services, including database-backed pricing rules that product teams can change without a deployment.
Build fraud and abuse prevention capabilities in the backend: risk scoring, velocity and coupon-abuse checks, payment-failure monitoring and review workflows.
Design transaction-level data flows so that payment, CRM, analytics and email platform records share consistent identifiers and reconcile cleanly. Work with data and BI teams on event pipelines, warehouse models and reporting accuracy.
Expose well-documented, versioned APIs to web and mobile clients, and to partner and agent-facing channels such as messaging platforms and AI assistants (for example through MCP-style connectors).
Drive reliability and performance: observability, alerting, load testing, query tuning, caching and capacity planning.
Set the standard for testing: unit, integration and contract tests, and automated checks in CI/CD.
Lead code reviews, write technical design documents, and mentor junior and mid-level engineers.
Evaluate tools, services and patterns, and make pragmatic build-vs-buy decisions.

What You'll Bring

Required

7-8 years of professional backend development, with 6+ years of production Node.js and TypeScript (NestJS, Express, Fastify or similar) on systems with real traffic and real money flowing through them.
Strong command of API design: REST (and GraphQL where relevant), versioning, pagination, authentication and authorization (OAuth2, JWT, API keys), rate limiting and clear error contracts.
Deep experience with relational databases (PostgreSQL or MySQL): schema design, indexing, query tuning, transactions, migrations and safe changes to live tables. Working knowledge of Redis or similar for caching and queues.
Proven experience integrating payment providers, with a solid grasp of idempotency, webhooks, reconciliation, refunds and PCI-conscious design.
Experience building multi-tenant or white-label systems, including configuration-driven behavior and tenant isolation.
Experience designing for failure in distributed systems: asynchronous processing, message queues, retries with backoff, dead-letter handling and exactly-once-in-effect semantics.
Strong testing discipline: unit, integration and contract testing, with tests that run in CI on every change.
Experience with cloud infrastructure (AWS or similar), containers, CI/CD pipelines and infrastructure as code.
Production observability experience: structured logging, metrics, tracing and on-call practice.
Solid grasp of application security: input validation, secrets management, secure handling of personal and payment data.
Proven ability to mentor engineers, lead technical decisions and communicate with product and business stakeholders, including customers when integration requirements need to be clarified.

Strongly Preferred

Experience with eSIM, SIM or telecom systems, such as SM-DP+ and carrier provisioning APIs, or with operator (MNO) integrations.
Experience with fraud, risk or abuse-detection systems, including rules engines and scoring.
Experience with data warehouses and BI tooling (for example Redshift, Trino or Metabase), and with SQL at analytical scale.
Experience reconciling data across payment, CRM, analytics and marketing platforms.
Experience building event-driven systems with Kafka, SQS/SNS or similar.
Experience with Python, Go or Java alongside Node.js.
Experience building APIs for AI assistants or agent-driven commerce, including MCP connectors and messaging channels such as WhatsApp.
Experience with Kubernetes or serverless platforms.
Prior experience in travel, fintech, e-commerce, telecom or connectivity products.

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More about this job

Responsibilities

Design, build, and operate Node.js and TypeScript backend services for eSIM products, including multi-tenant catalog, pricing, checkout, payments, orders, provisioning, and usage management. Lead architecture and reliability practices, integrations, testing, technical reviews, and mentoring while collaborating with product, engineering, data, and QA teams.

Requirements

Requires 7–8 years of backend development, including at least 6 years with production Node.js and TypeScript, plus strong experience with APIs, relational databases, payment integrations, multi-tenant systems, and distributed-system reliability. Candidates should also bring cloud, CI/CD, testing, observability, and security experience, along with the ability to mentor engineers and communicate technical decisions to stakeholders.

Skills

Node.js
TypeScript
Backend Architecture
API Design
PostgreSQL
Payment Integrations
Multi-Tenant Systems
Distributed Systems
Testing
AWS
CI/CD
Observability
Application Security
Fraud Prevention
Mentoring
eSIM Provisioning

Visa sponsorship

Not detected in the job text

Keywords

Node.js
TypeScript
NestJS
Express
Fastify
REST
GraphQL
PostgreSQL
MySQL
Redis
Payment Providers
Webhooks
Idempotency
Multi-Tenant Platforms
eSIM
SM-DP+
Carrier Provisioning
AWS
Docker
CI/CD
Infrastructure as Code
Kafka
SQS/SNS
Kubernetes
Fraud Detection
Event Pipelines
Data Warehouses
OAuth2
JWT
Observability

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Work requirements

Jobs in Canada