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Added 11 days ago
Cloud Site Reliability Engineer II
Barracuda Networks Inc.
Ottawa, ON
…Our platform protects email, data, applications, and networks with innovative solutions, and a managed XDR service, to strengthen cyber resilience. Hundreds of thousands of IT professionals…
Added 11 days ago
RI
Full Stack Software Engineer
Remarcable, Inc.
Remote, Canada
- $100,000 to $150,000 CAD / year
- Full-time
- Remote
We are growing our engineering team and hiring across multiple Full Stack Software Engineer roles at both Intermediate and Senior levels. We are looking for resourceful, curious engineers…
Added 11 days ago
D
Tech Lead - Software Engineering
DataVisor
Calgary, AB
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 11 days ago
D
Tech Lead - Software Engineering
DataVisor
Vancouver, BC
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 11 days ago
D
Tech Lead - Software Engineering
DataVisor
Toronto, ON
- $130,000 to $170,000 CAD / year
- Full-time
Deep production experience with Java, along with working proficiency in Python and Shell scripting.
Added 11 days ago
P
DevOps Engineer
Proofpoint
Toronto, ON
- Full-time
We are seeking a curious and self-motivated DevOps Engineer with experience in building
Added 11 days ago
T
Engineer II - IAM Federation Services
TD
Toronto, ON
- Full-time
Hands-on experience with Python, Java, Java Spring and SQL
Added 12 days ago
FR
Senior Service Reliability Engineer
Fitch Ratings
Toronto, ON
- Full-time
Fitch Group is currently seeking a Senior Service Reliability Engineer to embed with Fitch Ratings development squads in Toronto and to partner with developers across Chicago, London,…
Added 12 days ago
Senior Machine Learning Engineer- AIOS
Zafin
Toronto, ON
As a Machine Learning Engineer, part of Zafin's AIOS Product team, you will build the machine learning and AI systems that power the AIOS Knowledge Fabric and help agents reason over…
Added 12 days ago
P
Data Integration Engineer
Prophix
Remote, Canada
- Full-time
- Remote
A Prophix Data Integration Engineer enables seamless, automated connections between client data sources and the Prophix platform. Working on the Professional Services team and with…
Added 12 days ago
A
Senior Backend Engineer
Apollo.io
Canada
- Full-time
…$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…
Added 12 days ago
QW
Generative AI Engineer
Quantum World Technologies Inc.
Toronto, ON
- Full-time
AI Engineer with expertise in Generative AI, LLMOps, and MLOps, responsible for building and deploying scalable AI solutions, developing LLM and RAG applications, managing the end-to-end ML…
Added 12 days ago
T
Engineer II - IAM Federation Services
TD
Toronto, ON
- Full-time
Hands-on experience with Python, Java, Java Spring and SQL
Added 12 days ago
Site Reliability Engineer - OpenShift
Capgemini
Toronto, ON
Capgemini is looking for a Production support Engineer to work for the Commercial Line of Business. An ideal candidate should be the one that has experience as outlined below :-
Added 12 days ago
P
Data Integration Engineer
Prophix
Toronto, ON · Etobicoke, ON
- Full-time
A Prophix Data Integration Engineer enables seamless, automated connections between client data sources and the Prophix platform. Working on the Professional Services team and with…
Added 12 days ago
Z
Support Engineer
ZenduIT
Mississauga, ON
- Full-time
…from local service fleets to large enterprises, and we work with major telematics platforms and hardware partners across North America. [Marketing to confirm customer and partner claims…
Added 12 days ago
AI
Forward Deployed AI Engineer
AGF Investments
Toronto, ON
- Full-time
The Forward Deployed AI Engineer is a hands-on technical expert responsible for partnering directly with business stakeholders to identify opportunities, design solutions, and build…
Added 12 days ago
AI
AI Platform Engineering Lead
AGF Investments
Toronto, ON
- Full-time
The role works closely with AI Forward Deployed Engineers and other technical teams to connect AI workloads to governed enterprise data, ensuring every deployed agent and model is…
Added 12 days ago
M
Solutions Engineer (Technical Sales)
Miovision
Kitchener, ON
- $86,000 to $107,500 USD / year
- Full-time
Python Proficiency: Hands-on experience with Python for software prototyping, deep debugging, and automation workflows.
Added 12 days ago
CG
Analytics Engineer
Cymax Group Technologies
Vancouver, BC
- $100,000 to $120,000 CAD / year
…using a medallion architecture, so the business can be served with clean, reliable data it can trust - using solid SQL and Python skills, and modern AI tooling, along the…
Added 12 days ago
GD
Copy of Software Engineering Developer, DevOps
General Dynamics Missions System International
Calgary, AB · Ottawa, Ontario
- $85,000 to $110,000 CAD / year
- Full-time
We are seeking a skilled DevOps Engineer to join our team and enhance our development and operational efficiency. This role is ideal for someone who thrives in a cloud-agnostic environment…
Added 12 days ago
CG
Data Analyst
Cymax Group Technologies
Vancouver, BC
- $100,000 to $120,000 CAD / year
- Full-time
…using a medallion architecture, so the business can be served with clean, reliable data it can trust - using solid SQL and Python skills, and modern AI tooling, along the…
Added 12 days ago
Senior Service Reliability Engineer
Fitch Group
Toronto, ON
Fitch Group is currently seeking a Senior Service Reliability Engineer to embed with Fitch Ratings development squads in Toronto and to partner with developers across Chicago, London,…
Added 12 days ago
HS
Site Reliability Engineer for Linux administration
Hyve Solutions
ON · Ontario, Canada
- Full-time
…eliminate vendor complexity while accelerating time-to-market with single-partner accountability from design through scale. The company co-innovates with deep engineering expertise,…
Added 12 days ago
R
Engineering Manager, Data
Robinhood
Toronto, ON
- Full-time
3+ years of experience as an engineering manager, with 5+ years of prior experience as a software engineer or data engineer.

Apollo.io

Senior Backend Engineer

Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

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

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!

Apply About employer

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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