Jobs in Canada

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Added 7 hours ago
M
Manager, Software Development and Architecture
Moneris
Toronto, ON
- Full-time
…architecture through release and production support. You will shape Java microservices and application programming interface (API) strategy, guide distributed teams, and partner with…
Added 7 hours ago
L
Senior Forward Deployment Engineer
Luxoft
Mississauga, ON
- Full-time
The role combines senior software engineering, DevOps, SRE, test automation, application security, and legacy modernization. Approximately 70% of the work involves hands-on coding and…
Added 8 hours ago
T
Financial Services - Principal Architect
Talentmatics
Mississauga, ON
- Full-time
Strong expertise in security architecture, IAM, zero-trust, encryption, and application security.
Added 9 hours ago
Senior Security Engineer
Scotiabank
Toronto, ON
The Senior Security Engineer, Security Engineering will be responsible for providing technical leadership within a diverse team of cloud security engineers, leveraging industry leading SDLC…
Added 9 hours ago
VC
Senior Commerce Engineer
Valsoft Corporation
Remote, Canada
- $120,000 to $135,000 CAD / year
- Remote
Working knowledge of web application security practices.
Added 10 hours ago
H
Senior Application Security Engineer
Hays
Mississauga, ON
- Full-time
The Senior Application Security Analyst is responsible for embedding security into the software development lifecycle (SDLC) by partnering closely with application and engineering teams.
Added 11 hours ago
XT
Senior DevSecOps Engineer | Mississauga, ON, Canada
Xforia Tech
Mississauga, ON
- Contract
We are seeking an experienced Senior DevSecOps Engineer with strong software engineering and distributed systems development experience. The ideal candidate will have hands-on programming…
Added 13 hours ago
M
Senior Android SDK Developer
MapsPeople
Toronto, ON
- Full-time
As a Senior Android SDK Developer, you will be a key contributor to our mobile platform, focused on building and evolving our Android SDKs. You will work closely with other SDK engineers,…
Added 19 hours ago
Q
Senior Software Developer
Quillogic
Revelstoke, BC
- Full-time
Must live in Canada and have legal authorization to work in Canada on an unrestricted basis
Added 1 day ago
V
Senior Software Engineer
Veem
Ottawa, ON
- Full-time
Experience modernizing an older Java/Spring application incrementally, including dependency and framework upgrades.
Added 1 day ago
V
Senior Software Engineer
Veem
Ottawa, ON
- Full-time
Experience modernizing an older Java/Spring application incrementally, including dependency and framework upgrades.
Added 1 day ago
AI
Senior AI & DevOps Engineer – Azure, AWS & Generative AI
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Calgary, AB
- Full-time
Knowledge of infrastructure, network, and application security best practices, including secure transport and storage of sensitive/private data.
Added 1 day ago
T
Senior Azure DevOps Engineer
Teqfocus
Toronto, ON
- Contract
This role requires a hands-on engineer who can independently manage cloud environments, streamline application deployments, automate infrastructure provisioning, and ensure platform…
Added 1 day ago
A
Senior Software Developer
Autodesk
Toronto, ON
- Full-time
Keep system updated in time for security compliance
Added 1 day ago
A
Senior Software Developer
Autodesk
Toronto, ON
- Full-time
Keep system updated in time for security compliance
Added 2 days ago
T
Sr. Backend Engineer - Node.JS
Telna
ON · Ontario, Canada
- Full-time
Solid grasp of application security: input validation, secrets management, secure handling of personal and payment data.
Added 2 days ago
K
FULLSTACK ENGINEER
Kablamo
Toronto, ON
- Full-time
…for them than seeing the satisfaction of seeing a client’s application come to…
Added 2 days ago
RB
Senior Manager, Software Development
Royal Bank of Canada
Toronto, ON
- Full-time
Must have’s:
Added 2 days ago
C
Senior Java Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
We are seeking an experienced and motivated Senior Java Developer to spearhead the development of robust, scalable, and innovative enterprise applications. The ideal candidate will possess…
Added 2 days ago
R
Senior Manager, Software Development
RBC
Toronto, ON
- Full-time
Must have’s:
Added 2 days ago
JG
Sr Full stack Developer
J&M Group
Toronto, ON
- Contract
Seeking a Senior Full Stack Engineer with 6+ years of experience to design, develop, and support cloud-native, microservices-based applications on Azure Kubernetes Service (AKS).
Added 2 days ago
D
Senior SDET / Quality Engineering Lead/Architect
Droisys
Brampton, ON
- Contract
We are seeking a Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect to join our team. The ideal candidate will have strong experience in architecting…
Added 2 days ago
SM
RQ11845 – Software Developer – Senior (Onsite)
S M Software Solutions Inc
Toronto, ON
- Internship
Work Arrangement: Onsite – 5 Days per Week · Onsite Requirement: 5 days per week
Added 2 days ago
Software Engineer II, Platform Infrastructure - Control
Okta
Toronto, ON
…robust orchestration systems, idempotent APIs, and high-quality developer tooling. Because we build the "brain" of the platform - handling everything from environment provisioning to…

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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Jobs in Canada