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Added 12 days ago
S
Senior Machine Learning Engineer
ServiceNow
Toronto, ON
- Full-time
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could…
Added 12 days ago
A
Data Engineer Lakehouse
Augmented
Toronto, ON
- Full-time
Augmented is hiring a Data Engineer to build and run a modern lakehouse platform for one of our large enterprise clients in a regulated industry. You will design reliable batch and…
Added 12 days ago
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Software Engineer III
TD
London, ON · Toronto, ON
- Full-time
We are seeking a skilled Senior Software Engineer with expertise in Java with expertise in Node JS, Java, Spring Boot, REST API, Kafka , SQL Server Database, Cloud, Azure & AI tools. This…
Added 12 days ago
Senior Software Test Engineer
Coursera
Toronto, ON
As a Senior Software Test Engineer (Test Infrastructure and Tooling) at Coursera, you’ll play a key role in helping teams produce high-quality software for millions of learners across the…
Added 12 days ago
X
Senior Full Stack Developer
xMentium
Remote, Canada
- Full-time
- Remote
We're looking for a Senior Full Stack Developer to build and maintain production systems for our Document Intelligence platform.
Added 12 days ago
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Senior NLP Engineer
Behavox
Toronto, ON
- $170,000 to $230,000 CAD / year
Our Canadian entity, Northern Path Communication & Security Software Inc., is recruiting a Senior NLP Engineer for our Toronto office.
Added 12 days ago
M
RQ11486 - DataOps/Cloud Data Engineer - Senior
Maarut
Toronto, ON
- Contract
Experience with Cloud data engineer must be familiar and
Added 12 days ago
Senior IT Support Engineer
Pantheon Systems, Inc
Vancouver, BC
Pantheon is looking for a highly capable Senior IT Support Engineer to join our Information Technology team in Vancouver. You will provide thoughtful, hands-on support to Pantheon’s…
Added 12 days ago
SI
Lead Analytics Engineer - Payments, Identity & Trust and Safety
Scribd, Inc.
Toronto, ON · Vancouver, BC
- Full-time
…Scribd securely monetize and protect its products. It is the senior-most analytics engineering role for these pillars and a purely technical leadership position with no direct reports. You…
Added 12 days ago
SI
Lead Analytics Engineer, AI Native Self Service Analytics
Scribd, Inc.
Toronto, ON · Vancouver, BC
- Full-time
We’re hiring for a Principal/Lead Analytics Engineer to scale data for an AI native Scribd, Inc. In this role, you will shape the technical foundations, modeling standards, and development…
Added 12 days ago
A
Senior Software Engineer, Builder Studio
Apollo.io
Canada
- Full-time
Builder Studio is Apollo's new product for building custom GTM software in plain English. A RevOps lead, GTM engineer, or founder describes the tool they need, and Builder Studio plans it,…
Added 12 days ago
M
Senior Data Scientist
Mphasis
Calgary, AB
- Full-time
…work until it runs in their environment. This is a hands-on senior role. You will own problems end to end - scoping with stakeholders, wrangling messy client data, choosing methods that fit…
Added 12 days ago
K
Senior Analytics Engineer - Finance
Kraken
Canada
- Full-time
We’re looking for a Senior Analytics Engineer to join Kraken’s Finance Data Eng & Analytics team within Data Platform. You’ll build trusted financial data products, using automation and AI…
Added 12 days ago
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Quality Engineer
LTM
Mississauga, ON
- $84,238 to $103,554 CAD / year
- Full-time
Seeking a Senior SDET with 5+ years of experience specializing in functional system testing and automation using Playwright and other testing frameworks
Added 12 days ago
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Senior Quality Engineer
LTM
ON · Ontario, Canada
- $84,238 to $103,554 USD / year
- Full-time
Seeking a Senior SDET with 3 to 5 years of experience specializing in functional system testing and automation using Playwright and other testing frameworks
Added 12 days ago
NT
Senior MLOps Engineer
Nöord Technologies
Montréal-Est, QC
- Full-time
API Development & Python Engineering: Design and develop REST and MCP APIs, alongside senior-level Python development across the full data and ML stack.
Added 12 days ago
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Senior DevOps Engineer - Robotics Simulation
NVIDIA
Toronto, ON · Canada, Toronto
- Full-time
We are looking for a Senior DevOps Engineer to build and scale the continuous integration, testing, and release infrastructure for NVIDIA Isaac Sim!
Added 12 days ago
T
AI / ML Product Engineer
TD
Toronto, ON
- Full-time
We are looking for an AI Platform Product Engineer who can lead AI initiatives from idea to production, and who can teach our engineers to build with AI. This person is technical enough to…
Added 12 days ago
C
FX Application Infrastructure Engineer, VIce President
Citi
Mississauga, ON
- Full-time
The FX Technology team is looking for a Senior-level Infrastructure and Middleware Engineer based in Mississauga, Canada to work within the FX Technology group focusing on the hardware,…
Added 12 days ago
A
Python AI Engineer (LOCAL to Quebec only)
Apptad
Montreal, QC
- Contract
Job Title: Python AI Engineer (LOCAL to Quebec only)
Added 12 days ago
TI
DevOps Engineer( Databricks)
TekStaff IT Solutions
Toronto, ON
- Contract
TekStaff's Client has a current vacancy for a Senior Cloud & DevOps Engineer( Azure Databricks)
Added 12 days ago
I
Senior Network Engineer (Global Backbone & Datacenter)
i3D.net
Remote, Canada
- Full-time
- Remote
As a Senior Network Engineer at i3D.net, you’ll be hands-on in building and supporting a global network infrastructure from our office in Atlanta, that spans both service provider backbone…
Added 12 days ago
TI
Senior DataOps / Cloud Data Engineer
Teckhorizon Inc
Toronto, ON
- Contract
The client is seeking a highly experienced Senior DataOps / Cloud Data Engineer to design, develop, automate, optimize, and maintain enterprise-scale data pipelines and cloud-based data…
Added 12 days ago
TT
Assistant Designer, Signals (13803)
Toronto Transit Commission (TTC)
Toronto, ON · Greater Toronto Area, Canada
- $91,109.2 to $113,895.6 CAD / year
- Full-time
Reporting to the Senior Design Engineer - Signals, you will be responsible for providing engineering support in the preparation, analysis, monitoring and co-ordination of new projects or…
Added 13 days ago
SI
Senior Quality Engineer
Siri InfoSolutions, Inc.
ON · Ontario, Canada
- Contract
Hiring: Senior Quality Engineer – Test Automation

Apollo.io

Senior Software Engineer, Builder Studio

Canada

Full-time

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Job details

Job type: Full-time
Posting language: English
Posted: Oct 16, 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.

About Apollo

Apollo is the AI-powered go-to-market platform that helps revenue teams find, engage, and convert their best customers. We combine a database of more than 210 million contacts and 35 million companies with an agentic end-to-end GTM platform, and more than 500,000 companies rely on us to run their go-to-market motion. We are profitable, growing fast, and rebuilding the product around AI and agents.

About Builder Studio

Builder Studio is Apollo's new product for building custom GTM software in plain English. A RevOps lead, GTM engineer, or founder describes the tool they need, and Builder Studio plans it, generates real code, and turns it into a working app they can preview, refine through conversation, publish, and share with their team.

Every app is made of four building blocks: Pages for the interface, Databases for structured records, Workflows for visible backend logic and scheduled jobs, and Agents that reason over Apollo context and take action. What makes it different from a generic app builder is that Apollo's data, enrichment, sequences, deliverability, and CRM sync are native building blocks, not bolted-on third-party integrations.

It is one of Apollo's flagship AI bets. The product is in the hands of early design partners now and is heading toward broad launch, which means the next year is about taking a working product and making it reliable, secure, and loved at scale.

Your role and mission

You will own major slices of Builder Studio end to end, across the builder experience customers see and the systems that make generated apps actually run. You will work on problems most engineers have never touched: an agent that writes and edits software on a customer's behalf, a runtime that safely executes that code with the user's own Apollo permissions, and an interface that makes all of it understandable to someone who has never read a line of code.

What You Will Do

Build the core Studio experience: the chat-driven build loop, live preview, canvas, and the publish and share flow, so a non-technical user can go from an idea to a working tool in minutes
Shape how the agent turns a natural-language goal into a plan, a set of pages, databases, and workflows, and then safely applies follow-up edits without breaking what already works
Design the runtime and workflow layer for generated apps, including triggers, scheduled jobs, retries, logging, and the line between deterministic steps and agentic steps
Own delegated identity, permissions, secrets, and isolation so generated apps act with exactly the access the user has, and nothing more
Expand "connect once, use anywhere" integrations across Apollo data (contacts, companies, lists) and external systems like Google Sheets, Google Drive, CRMs, and MCP-based connectors
Make the relationships between pages, data, workflows, and agents legible in the UI, so customers trust what their app is doing
Work directly with design partners and customers, turn their feedback into shipped improvements quickly, and help define what the product becomes
Raise the quality bar on a fast-moving 0 to 1 team: set patterns, write the tests and evals that matter, and own reliability, performance, and cost of what you ship

How we work: AI-native by default

You treat AI-assisted development as a core part of how you work. You use agents to move faster on design, investigation, and implementation, with clear judgment about where to review closely, and you look for ways AI raises the leverage of the whole team. On Builder Studio this is doubly true: you are building an AI that writes software, so your own instincts for where AI-generated code succeeds and fails directly shape the product.

What We Are Looking For

5+ years building and shipping production software, with real depth on both the frontend and backend of the same product
Strong TypeScript and React skills, including complex, stateful UIs such as editors, canvases, builders, or real-time collaborative surfaces
Solid backend and API design experience, ideally including event-driven or workflow systems where retries, idempotency, and observability matter
Hands-on experience building with LLMs in production: agent loops, tool calling, context management, code generation, or evals. You know where models break and how to design around it
Comfort making sound security calls on systems that run untrusted or generated code: sandboxing, delegated auth, scoped tokens, and secrets handling
A track record of taking an ambiguous 0 to 1 product from rough prototype to something customers rely on, and making the scope-versus-quality calls that requires
Product instinct and empathy for non-technical users. You care whether a RevOps lead can understand what their app is doing, not just whether the code is correct
Genuine, current fluency with AI-assisted development and a high bar for quality and ownership

Nice to have

Experience building low-code, no-code, or AI app-builder products, or developer tools
Experience with edge or serverless runtimes such as Cloudflare Workers and Durable Objects
Experience with Ruby on Rails at scale
Background in GTM, sales, or marketing tech, or experience working closely with RevOps teams

Our tech stack

TypeScript and React on the front end; Ruby on Rails and Node.js on the backend; Cloudflare Workers and Durable Objects for the Builder Studio runtime; Python, MongoDB, and Elasticsearch across the wider platform; Kubernetes, Docker, and Terraform in infrastructure; GCP for cloud.

What You Will Love About Apollo

You will help build a brand new product from the ground up at a company with the data, distribution, and customer base to make it matter on day one. You will work with a small, high-bar team, own real scope, and have the AI tooling and budget to work at the top of your leverage.

Compensation And Benefits

The listed Pay Range reflects the annual base salary for this role. This salary range may be inclusive of several career levels at Apollo and will be narrowed during the interview process based on a number of factors, including the candidate's experience, qualifications, and location.

Additional benefits for this role may include: equity; company bonus; paid holidays, flex PTO, and parental leave; employee assistance program and wellbeing benefits; global travel coverage; life and disability insurance; and extended health, dental, and vision benefits.

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.

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

Own major parts of Builder Studio, including its chat-based app-building experience, live preview, publishing flow, agent-driven code generation, and runtime and workflow systems. Build secure permissions and integrations, improve reliability and quality, and work with customers and design partners to shape the product.

Requirements

Candidates should have 5+ years of production software experience, strong TypeScript and React skills, and backend/API design experience. They should also have production experience with LLMs, sound security judgment for generated code, a record of taking ambiguous products from prototype to customer use, and strong product instincts for non-technical users.

Skills

TypeScript
React
Ruby On Rails
Node.js
Cloudflare Workers
Durable Objects
LLM Agents
API Design
Workflow Systems
Event-Driven Systems
Sandboxing
Delegated Authentication
Security
MongoDB
Elasticsearch
Kubernetes

Benefits

Equity
Company Bonus
Paid Holidays
Flexible Paid Time Off
Parental Leave
Employee Assistance Program
Wellbeing Benefits
Global Travel Coverage
Life Insurance
Disability Insurance
Health Insurance
Dental Insurance
Vision Insurance

Visa sponsorship

Not detected in the job text

Keywords

TypeScript
React
Ruby On Rails
Node.js
Cloudflare Workers
Durable Objects
Python
MongoDB
Elasticsearch
Kubernetes
Docker
Terraform
Google Cloud Platform
LLMs
Agentic Systems
Code Generation
Tool Calling
Context Management
Evaluation
API Design
Event-Driven Systems
Workflow Systems
Retries
Idempotency
Observability
Sandboxing
Delegated Authentication
Scoped Tokens
Secrets Management
GTM Technology

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