Jobs in Canada

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Added 1 min ago
Research Machine Learning Scientist II
TD
Toronto, ON
Full-time
Experience with Spark, SQL, or comparable database systems
Added 1 min ago
Senior Data Scientist - Fraud Detection
DataVisor
Remote, Canada
Full-time · Remote
Large-Scale Data Processing: Work with massive, noisy, and imbalanced datasets (billions of events) using tools like Spark, SQL, and our proprietary AI platform.
Added 1 min ago
Senior Data Scientist - Fraud Detection
DataVisor
Remote, Canada
Full-time · Remote
Large-Scale Data Processing: Work with massive, noisy, and imbalanced datasets (billions of events) using tools like Spark, SQL, and our proprietary AI platform.
Added 1 min ago
Senior Data Scientist - Fraud Detection
DataVisor
Remote, Canada
Full-time · Remote
Large-Scale Data Processing: Work with massive, noisy, and imbalanced datasets (billions of events) using tools like Spark, SQL, and our proprietary AI platform.
Added 1 min ago
Tech Lead - Software Engineering
DataVisor
Remote, Canada
Full-time · Remote
Strong knowledge of computer systems, relational databases, and SQL.
Added 1 min ago
Tech Lead - Software Engineering
DataVisor
Remote, Canada
Full-time · Remote
Strong knowledge of computer systems, relational databases, and SQL.
Added 1 min ago
Tech Lead - Software Engineering
DataVisor
Remote, Canada
Full-time · Remote
Strong knowledge of computer systems, relational databases, and SQL.
Added 1 min ago
Lead Data Platform Engineer 1
McKesson
Mississauga, ON
Full-time
Advanced proficiency with SQL and Python for large-scale data processing and performance optimization.
Added 1 min ago
Senior Analyst, Global Research - 26385
Enverus
Calgary, AB
Full-time
Highly computer literate with advanced skills in Microsoft Excel, Python, and/or SQL
Added 1 min ago
Senior GenAI Software Developer
BMO
Toronto, ON · FCP
Full-time
…looking for a passionate and innovative Senior GenAI Software Developer to join our growing team and help design, build, scale, and lead intelligent AI-powered solutions that enhance…
Added 16 mins ago
Full Stack Software Engineer
Remarcable, Inc.
Remote, Canada
$100,000 to $150,000 CAD / year
Full-time · Remote
Feature Engineering: Build and launch end-to-end features across Python/Django backends, Angular frontends, and SQL schemas.
Added 16 mins ago
Staff Data Engineer
Royal Bank of Canada
Toronto, ON
Full-time
Data Engineering: Python, Kafka, MS SQL Server, Elasticsearch stack, Azure Databricks
Added 16 mins ago
Sr. Software Developer (Java/ WebServices)
Open Text Corporation
Richmond Hill, ON
We are looking for a Senior Software Developer who can help us build the next generation of information-enabled supply chain management software running 24/7 in a high-performance…
Added 16 mins ago
Research Analyst I
University Health Network
Toronto, ON
Contract
Maintain and optimize Oracle database objects, including tables, views, stored procedures, and SQL queries
Added 28 mins ago
CRM & Power Platform Administrator
Jewish Federation of British Columbia (JFBC)
Vancouver, BC · Greater Vancouver Metropolitan Area
Full-time
Added 28 mins ago
Data Engineer II - CPB Data Curation
TD
Toronto, ON
Full-time
Added 28 mins ago
Tech Lead - Software Engineering
DataVisor
Calgary, AB
$130,000 to $170,000 CAD / year
Full-time
Strong knowledge of computer systems, relational databases, and SQL.
Added 30 mins ago
IT Strategist - Algorithmic Trading Development
Xcelerated Consulting Group, LLC.
Montreal, QC
Contract
Added 30 mins ago
Spark Scala Java Developer
Apptoza Inc.
Toronto, ON
Contract
2. Hands-on experience with Apache Spark (Core| SQL| Data Frames| Datasets).
Added 30 mins ago
Tech Lead - Software Engineering
DataVisor
Vancouver, BC
$130,000 to $170,000 CAD / year
Full-time
Strong knowledge of computer systems, relational databases, and SQL.
Added 30 mins ago
.Net Developer (C#, C++) & Application Support
Zealots Consulting Inc. Executive Search
Burnaby, BC
Full-time
Position Title: .Net Developer (C#, C++) & Application Support
Added 30 mins ago
Group Lead, Data Products & Architecture – Growth & R&D
Kraft Heinz
Toronto, ON
Full-time
Working proficiency in SQL and Python, and familiarity with BI tools such as Power BI, sufficient to review team output and guide technical standards
Added 30 mins ago
AWS Data Engineer
Apptoza Inc.
Toronto, ON
Contract
Build data processing solutions using Python, PySpark, and SQL.
Added 30 mins ago
Functional Tester- Capital Markets
Pacer Group
Mississauga, ON
$115,000 to $125,000 CAD / year
Full-time
Strong SQL skills for data querying and validation.
Added 30 mins ago
Tech Lead - Software Engineering
DataVisor
Toronto, ON
$130,000 to $170,000 CAD / year
Full-time
Strong knowledge of computer systems, relational databases, and SQL.

Apollo.io

Senior Backend Engineer

Canada

Job type: Full-time
Experience: Minimum 5 years of industry experience in backend development, at least 1-2 years in senior positions, developing large-scale applications
Posting language: English
Posted: Sep 23, 2026

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Original job description

Apollo.io is the leading go-to-market solution for revenue teams, trusted by over 500,000 companies and millions of users globally, from rapidly growing startups to some of the world's largest enterprises. Founded in 2015, the company is one of the fastest growing companies in SaaS, raising approximately $250 million to date and valued at $1.6 billion. Apollo.io provides sales and marketing teams with easy access to verified contact data for over 210 million B2B contacts and 35 million companies worldwide, along with tools to engage and convert these contacts in one unified platform. By helping revenue professionals find the most accurate contact information and automating the outreach process, Apollo.io turns prospects into customers. Apollo raised a series D in 2023 and is backed by top-tier investors, including Sequoia Capital, Bain Capital Ventures, and more, and counts the former President and COO of Hubspot, JD Sherman, among its board members.

YOUR ROLE & MISSION

As a Senior Software Engineer, you will be a critical part of our growing company, working on a cross-functional team to implement best practices in technology, architecture, and process. You’ll have the chance to work in an open and collaborative environment, receive and give hands-on mentorship, and have opportunities to grow and accelerate your career. You love both learning and teaching.

In this role, you will work across two high-impact domains: data platform architecture and integrations with distributed systems building the infrastructure that powers Apollo’s AI-driven internal workflows. On the data side, you’ll organize and make sense of data at scale, working closely with our data engineering team to structure pipelines and enable intelligent product experiences. On the integrations side, you’ll own the connections layer and the distributed architecture that keeps Apollo reliably linked to the broader ecosystem at high throughput.

You enjoy working cross-functionally to solve hard problems and make an impact. At Apollo, you strive for quality and are obsessed with improving automation, squashing bugs, and investigating performance improvements and innovative ideas. You bring an AI-first mindset to everything you do, reaching for AI tools as naturally as any other part of your workflow and helping the team do the same.

Our tech stack: React.js / TypeScript

Python
GoLang
MongoDB
Elasticsearch
Redis
Kafka
Kubernetes / Docker
GCP
Terraform / Ansible
Grafana / Kibana
GitHub Actions

Daily Adventures & Responsibilities

Design and implement highly scalable backend services, data pipelines, and integration endpoints that perform reliably at high volume
Gather product and engineering requirements; write design documents and drive technical discussions to align cross-functional stakeholders
Drive and lead the full software development lifecycle: product requirements, architecture, solution design, development, quality assurance, and maintenance
Build systems with observability as a first-class concern proper monitoring, alerting, and dashboards so issues are caught before customers notice
Communicate development progress clearly to product leads, engineering managers, and other stakeholders
Be comfortable introducing new technologies and new ideas as required, including AI tools that accelerate your workflow and the team’s
Navigate ambiguity and roadblocks proactively when a project hits a wall, you find a path forward and maintain cadence
Work effectively as part of a large global team, attending scrum ceremonies, team events, and manager 1:1s
Provide and respond to technical and behavioral feedback from managers and peers in written and verbal form

COMPETENCIES

Proactively acts without being told what to do; identifies areas for improvement and drives best practices to deliver high-quality, performant, and scalable solutions
Develops services that are highly available and scalable with proper monitoring and alerting in place
Able to up-level the team by sharing knowledge and best practices across the engineering organization
Able to deal with ambiguity and maintain momentum on projects even when hitting obstacles months in
Full ownership of projects from start to finish because deployment is not the finish line
Organized and able to effectively plan and break down large projects into smaller tasks that are easier to estimate and deliver
Listens actively and seeks to understand others’ viewpoints before responding
A creative and innovative problem solver with previous experience working in an agile, startup environment
Confident in owning your role and bringing creative ideas to the hands of users
AI-native working style: habitually leverages AI tools across coding, debugging, review, and documentation, and stays current with emerging capabilities

Qualifications

Minimum 5 years of industry experience in backend development, at least 1-2 years in senior positions, developing large-scale applications
Experience developing distributed web applications at scale
Code that is comprehensible, well-structured, and highly performant
Experience with database modeling (SQL or NoSQL)
Experience using and designing RESTful services
Strong knowledge of computer science fundamentals, including data structures, algorithms, and object-oriented design
Proven experience leveraging AI tools to enhance software development processes, including code generation, debugging, and productivity optimization, with a willingness to stay current with emerging AI technologies
Background in fast-scaling startup or high-velocity environments where going beyond your job title was the norm

Must have: Communication Skills, Problem Solving, Proactivity, Team Player, Listening Skills, Creativity and Innovation, Organization and Planning, Dealing with Ambiguity, Ownership of projects from start to finish, Distributed Web Development

Nice to have: BS or MS degree in Computer Science, Computer Engineering or similar, GCP, Kubernetes, Docker, Mongo, Redis, Ruby on Rails, Microservices, Machine Learning

We are AI Native

Apollo.io is an AI-native company built on a culture of continuous improvement. We’re on the front lines of driving productivity for our customers - and we expect the same mindset from our team. If you're energized by finding smarter, faster ways to get things done using AI and automation, you'll thrive here.

Why You’ll Love Working at Apollo

At Apollo, we’re driven by a shared mission: to help our customers unlock their full revenue potential. That’s why we take extreme ownership of our work, move with focus and urgency, and learn voraciously to stay ahead.

We invest deeply in your growth, ensuring you have the resources, support, and autonomy to own your role and make a real impact. Collaboration is at our core - we’re all for one, meaning you’ll have a team across departments ready to help you succeed. We encourage bold ideas and courageous action, giving you the freedom to experiment, take smart risks, and drive big wins.

If you’re looking for a place where your work matters, where you can push boundaries, and where your career can thrive - Apollo is the place for you.

Learn more here!

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More about this job

Responsibilities

Design and deliver scalable backend services, data pipelines, and high-throughput integrations, owning projects across requirements, architecture, development, deployment, and maintenance. Collaborate with product, data, and engineering teams to improve reliability and observability, communicate progress, and use AI tools to accelerate development.

Requirements

Requires at least five years of backend development experience, including one to two years in senior roles, and experience building large-scale distributed web applications. Candidates should have strong computer science fundamentals, database modeling and REST service experience, effective communication and problem-solving skills, and demonstrated use of AI tools in software development.

Skills

Backend Development
Distributed Systems
Scalable Web Applications
Data Pipelines
RESTful Services
Database Modeling
Python
Go
TypeScript
MongoDB
Redis
Kafka
Kubernetes
Google Cloud Platform
AI-Assisted Software Development
Observability

Visa sponsorship

Not detected in the job text

Keywords

Backend Engineering
Distributed Systems
Scalable Applications
Data Platform Architecture
Data Pipelines
Integrations
RESTful Services
Microservices
Database Modeling
SQL
NoSQL
Python
Go
TypeScript
React.js
MongoDB
Elasticsearch
Redis
Kafka
Kubernetes
Docker
Google Cloud Platform
Terraform
Ansible
Grafana
Kibana
GitHub Actions
Observability
Agile
AI-Assisted Development

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