Jobs in Canada

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Added 12 hours ago
XG
Senior Data Engineer
Xforia Global Talent & Technology Solutions
Halifax, NS
- $55 to $60 CAD / hour
- Contract
Strong experience in Python Scripting and PySpark for data processing
Added 12 hours 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 12 hours ago
C
Senior Backend Engineer, LLM Systems
CleverConsult
Canada
- Full-time
You must be based in Canada
Added 12 hours ago
XG
Sr AWS Data Engineer , Halifax, Canada
Xforia Global Talent & Technology Solutions
Halifax, NS
- Contract
Position Summary: The Senior Data Engineer leads complex data engineering projects, working on designing data architectures that align with business requirements. This role focuses on…
Added 12 hours ago
L
Senior Software Engineer - Global Product Technology (Anaplan, Snowflake)
lululemon
Vancouver, BC
- Full-time
As a Senior Software Engineer, you will lead the design and implementation of complex software systems and features spanning multiple services and components, establishing technical…
Added 14 hours ago
Senior Data Engineeer
BuildOps
Toronto, ON
…through our platform. We have a wide mandate and are hiring a senior engineer who wants to own meaningful parts of…
Added 14 hours ago
TC
Senior IFRS17 Data Engineer
Tata Consultancy Services
Mississauga, ON
- $90,000 to $110,000 CAD / year
- Full-time
We are looking for a Senior IFRS17 Data Engineer with strong experience in IFRS17, insurance data, data analysis, and data engineering. The successful candidate will have hands-on expertise…
Added 14 hours ago
C
Software Engineer, Design Systems & AI Tooling
Citi
Mississauga, ON
- Full-time
Programming Skills: Strong proficiency in modern languages: TypeScript/JavaScript, Python, SQL, Swift, or Kotlin
Added 14 hours ago
ES
DevOps Engineer
Epsilon Solutions Ltd.
Montreal, QC
- Contract
The Senior DevOps & Python Platform Engineering Specialist designs, builds, and operates highly available enterprise content management platforms supporting both Application Enterprise…
Added 16 hours ago
Toronto - Forward Deployed Engineer - Rapid Innovation Lab
EY
Toronto, ON
Practical software development skills using Python, SQL, or similar technologies.
Added 17 hours ago
H
Machine Learning Engineer
Hays
Toronto, ON
- Contract
We’re looking for a hands-on Senior Machine Learning Engineer to develop and improve ML and deep learning models that power personalization across our retail ecosystem.
Added 17 hours ago
PT
Senior Data Engineer – Capital Markets (Databricks)
Precision Technologies
Mississauga, ON
- Contract
We are seeking a highly skilled Senior Data Engineer with extensive hands-on experience in Databricks, Python/PySpark, SQL, and Enterprise Data Engineering to join our Capital Markets…
Added 17 hours ago
B
Senior Data Engineer
BMO
Toronto, ON · SCC
- Full-time
Hybrid (minimum 2 days per week in office)
Added 18 hours ago
L
Senior FinOps Engineer / Cloud Cost Optimization Lead
Luxoft
Toronto, ON
- Contract
We are looking to engage an experienced Senior FinOps Engineer / Cloud Cost Optimization Lead to help us establish a sustainable cloud cost optimization practice within our Data Platforms…
Added 19 hours ago
Marketing Engineer
Questrade Financial Group
Toronto, ON
Work-life balance in a hybrid environment with at least 3 days in office
Added 20 hours ago
RI
Senior Data Engineer
Rivago Infotech Inc
Toronto, ON
- Contract
This position is for a Senior Data engineer with a background in Python, Pyspark, SQL and data warehousing for enterprise level systems. The position calls for someone that is comfortable…
Added 21 hours ago
TC
Senior Quality Engineer
Tata Consultancy Services
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
…Playwright, Cypress, Appium, and programming languages like Java, Python, or…
Added 22 hours ago
AR
Senior Machine Learning Engineer
Apple Retail Shop
Cambridge, ON
- Full-time
…looking for a passionate, highly motivated, and hands-on applied Senior Machine Learning Engineer. This role will assist our Online Retail Decision Automation team by helping to research…
Added 1 day ago
HP
Lead Data Engineer
Hartree Partners
Toronto, ON
- Full-time
Tools & Technologies AWS (S3, Athena, Glue, Lambda, Step Functions, MSK, RDS/Aurora PostgreSQL, ECS/EKS) • Python • SQL • Apache Airflow (including Amazon MWAA) • Apache Kafka • Apache…
Added 1 day ago
C
Senior Software Engineer - Integrations - AI/ML
ClickHouse
Remote, Canada
- $147,000 to $238,000 USD / year
- Full-time
- Remote
As a Senior Software Engineer specializing in the AI & ML ecosystem, you'll be a core contributor owning and evolving critical parts of ClickHouse's AI ecosystem. This role sits at the…
Added 1 day ago
RB
Lead Full Stack Developer
Royal Bank of Canada
Toronto, ON
- Full-time
Must have development experiences in Azure Integration Services (Logic Apps,
Added 1 day ago
BH
Tech Lead - ToolHound
Beacon Holdings
Canada
- Full-time
Lead and grow the team. Mentor the current engineer, raise their ceiling, and establish the best practices.
Added 1 day ago
A
Senior Test Engineer
Actalent
Ottawa, ON · Nepean, ON
- $50 to $60 CAD / hour
- Contract
The Test Engineer supports new product introduction and manufacturing test for fiber optic la equipment. This role sits alongside R&D while owning manufacturing-focused test activities…
Added 1 day ago
MC
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
- Full-time
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL
Added 1 day ago
MC
Data Analyst – Power BI Microsoft Fabric (36191)
Myticas Consulting
Ottawa, ON
- Full-time
This is an excellent opportunity for a junior-to-mid-level Data Analyst with strong Power BI, SQL and Microsoft data technologies experience who enjoys turning data into meaningful…

Telna

Sr. Backend Engineer - Node.JS

ON, Canada
Ontario, Canada, Canada

Full-time

Apply on LinkedIn About employer

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.

Apply on LinkedIn About employer

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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Jobs in Canada