Jobs in Canada

Group jobs by employerEmail me new jobs Save this search

Added 1 day ago
ET
Software Engineer in Test
Envision Technology Solutions
Toronto, ON
- Contract
Proficiency in at least one programming language: C#, Python, or Java.
Added 1 day ago
LT
Product Engineer(Full Stack) / Senior ProductEngineer
Lorven Technologies Inc.
Toronto, ON
- Contract
Our client is looking Product Engineer (Full Stack) / Senior ProductEngineer for Long Term project in Toronto, ON / Ottawa, ON (Hybrid) Below is the detail requirement.
Added 1 day ago
A
Senior Database Administrator (SQL Server, Oracle & Azure Cloud)-RQ11860
Amyantek
Toronto, ON
- Contract
Job Title: RQ11860 - Senior Database Administrator
Added 1 day ago
LT
Product Engineer
Lorven Technologies Inc.
Toronto, ON
- Full-time
Job Title: Product Engineer (Full Stack) / Senior Product Engineer
Added 1 day ago
SI
Java Software Engineer
Smart IT Frame LLC
Mississauga, ON
- Full-time
Seeking a Senior Java Developer to design, build, and optimize high-throughput, low-latency event-driven microservices for enterprise trading platforms.
Added 1 day ago
SM
RQ11874 – Specialized IT Consultant – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
Work Arrangement: Onsite – 5 Days per Week
Added 1 day ago
SM
RQ11860 – Database Administrator – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Work Arrangement: Onsite – 5 Days per Week
Added 1 day ago
T
Senior Azure DevOps Engineer
Teqfocus
Toronto, ON
- Contract
We are looking for an experienced Senior Azure DevOps & Infrastructure Engineer with strong expertise in CI/CD pipeline development, Microsoft Azure cloud infrastructure, Infrastructure as…
Added 1 day ago
A
Senior Software Developer
Autodesk
Toronto, ON
- Full-time
Excellent programing skills with Java, React Typescript.
Added 1 day ago
YC
JEE Developer, senior
Yoush Consulting
Toronto, ON
- Full-time
We require multiple Java developers with experience in application vulnerability issues and Websphere middleware. This is for a client in the public sector. Please contact us urgently if…
Added 1 day ago
U
Software Engineer II
Uber
Toronto, ON
- Full-time
You will design and build against these constraints alongside senior and staff engineers, and work directly with the product teams that call our services. You will also share oncall for the…
Added 1 day ago
SL
Senior Data Engineer
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Toronto One York
- Full-time
Candidates must have relevant experience in the following areas:
Added 1 day ago
HT
Java Developer
Hirematic Talent Solutions
ON · Ontario, Canada
- $100,000 to $120,000 CAD / year
- Full-time
We are seeking an experienced Java Developer with strong expertise in enterprise application development, microservices architecture, API development, and distributed systems.
Added 1 day ago
HT
Senior Architect
Hirematic Talent Solutions
ON
- Full-time
Experience Cloud (Azure or AWS), Cyber Security, Enterprise and Solution Architecture, Java, Microsoft .Net.
Added 1 day ago
A
Senior Software Developer
Autodesk
Toronto, ON
- Full-time
Excellent programing skills with Java, React Typescript.
Added 2 days ago
SM
RQ11860 – Database Administrator – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Work Arrangement: Onsite – 5 Days per Week
Added 2 days ago
SM
RQ11874 – Specialized IT Consultant – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
Work Arrangement: Onsite – 5 Days per Week
Added 2 days ago
CL
Solutions Architect - Enterprise Content Management (ECM)
Canada Life
London, ON
- Full-time
Proven experience as a Solution Architect, Lead Architect, or Senior Technical Lead.
Added 2 days ago
IG
Full Stack Engineer
IMCS Group
ON · Ontario, Canada
- Contract
We are seeking a highly skilled Senior Backend Engineer with strong expertise in modern backend development technologies and frameworks. The ideal candidate will have extensive experience…
Added 2 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 2 days ago
AS
Software Developer
AgileGrid Solutions
Canada
- Full-time
IBM is seeking a Senior Software Engineer to help develop and operate the cloud compute platform for IBM Confluent. The platform supports data-in-motion applications and services, including…
Added 2 days ago
K
FULLSTACK ENGINEER
Kablamo
Toronto, ON
- Full-time
Discuss system design, suggest solutions to technical problems and ask senior engineers for help when needed.
Added 2 days ago
Software Development Engineer, ElastiCache
Amazon
Vancouver, BC
…Valkey community. As a team, we believe in growing together - senior engineers are directly involved in mentoring and developing engineers at all levels, and we take pride in building a…
Added 2 days ago
TI
Automation Test Lead
Themesoft Inc.
Toronto, ON
- Contract
Design, develop, and maintain scalable automation frameworks using Java and modern design principles.
Added 2 days ago
ES
DevOps Engineer
Epsilon Solutions Ltd.
Montreal, QC
- Contract
Role Name: Senior DevOps & Python Platform Engineering Specialist

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

Report this job

Work requirements

Jobs in Canada