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Added 5 months ago
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High Level Synthesis Compiler Engineer
Altera
Toronto, Ontario
- Full-time
As a High Level Synthesis Compiler Engineer at Altera, you will focus on our compiler and the software that turns RTL and constraints into realizable designs: lowering, optimization, and…
Added 5 months ago
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Flight Control Engineer
Sapsol Technologies Inc
Remote, Canada
- Contract
- Remote
You must be proficient in using Matlab and Simulink as a simulation, aircraft/system modeling and control law development tool
Added 5 months ago
C
Submarine Technical Training SME
CAE
Halifax, NS · Ottawa, ON · Montreal, QC · Esquimalt BC, Canada
- Full-time
…safely and effectively. Also, you will guide scenario design, simulation fidelity requirements, data‑driven performance measurement, and instructor development for engineering and technical…
Added 4 months ago
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Staff Engineer Characterization
Infineon
Ottawa, ON
- Full-time
As a Staff Engineer Characterization in our Research & Development team, you'll have the opportunity to merge creativity with your technical expertise by shaping the future of technology,…
Added 5 months ago
ST
Flight Control Engineer
Sapsol Technologies Inc
Remote, Canada
- Contract
- Remote
You must be proficient in using Matlab and Simulink as a simulation, aircraft/system modeling and control law development tool
Added 5 months ago
4
Senior Electronic Warfare Systems Engineer
49North
Richmond, British Columbia · Beechville, Nova Scotia · Ottawa, Ontario
- Full-time
We’re on the hunt for a motivated and positive minded Sr. Systems Engineer with experience developing and integrating Electronic Warfare (EW) systems to join our cross functional,…
Added 5 months ago
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Staff Machine Learning Engineer, AI Generation Engine
SandboxAQ
Remote, Canada
- $146,200 to $258,000 CAD / year
- Full-time
- Remote
SandboxAQ's AI Generation Engine (SAIGE) team is seeking a highly accomplished Machine Learning Engineer to take ownership of the end-to-end ML lifecycle, from initial data exploration and…
Added 5 months ago
S
Senior Machine Learning Engineer, AI Generation Engine
SandboxAQ
Remote, Canada
- $119,000 to $210,000 CAD / year
- Full-time
- Remote
SandboxAQ's AI Generation Engine (SAIGE) team is seeking a highly accomplished Machine Learning Engineer to take ownership of the end-to-end ML lifecycle, from initial data exploration and…
Added 2 months ago
C
Aircraft Maintenance Engineer (Avionics)
CAE
Moose Jaw, SK
- Full-time
…experiences that support mission readiness. The Aircraft Maintenance Engineer (AME) - Avionics is responsible for performing aircraft servicing and maintenance…
Added 5 months ago
CS
Senior DSP Firmware Engineer
Canadian Solar Inc.
Remote, Canada
- Full-time
- Remote
The Senior DSP Firmware Engineer owns the design, development, optimization, and lifecycle support of real‑time embedded firmware for inverters used in utility‑ energy storage systems. This…
Added 5 months ago
AA
Ingénieur en logicielle des systèmes de contrôle /Control Systems Software Engineer (JWQC)
Aviya Aerospace Systems
Longueuil, Quebec
- Full-time
…has an opening for a Control Systems Software Certification Engineer to join our engineering group in Longueuil,…
Added 5 months ago
C
Senior Analog RF Design Engineer
Ciena
Ottawa, Ontario
- Full-time
…of a larger team and be responsible for design, mixed-signal simulation, lab test and verification of the broadband amplifier…
Added 5 months ago
Thermal Reservoir Engineer
Canadian Natural
Calgary, Alberta
Make your mark while you grow your career! As a Thermal Reservoir Engineer working for the Jackfish or Kirby areas, you have an opportunity to be a key player in a dynamic, collaborative…
Added 5 months ago
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Lead Mechanical/Nuclear Systems Engineer
CSMC
Woolwich, Ontario · Waterloo, Ontario
- Full-time
…applications. We are hiring a Lead Mechanical and Nuclear Systems Engineer to take ownership of the mechanical and pressure boundary design for core reactor subsystems. This includes the…
Added 5 months ago
ML
Process Engineer (Pyrometallurgy)
Mangrove Lithium
Delta, British Columbia
- Full-time
Registered Professional Engineer within Canada/US, or the ability to readily become one.
Added 4 months ago
C
Systems Engineer
CAE
Montreal, Quebec
- Full-time
…innovation, join us to create a lasting legacy in safety and…
Added 5 months ago
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Product Engineer (Pharma)
Basetwo
Remote, Canada
- Full-time
- Remote
We’re hiring a Product Engineer to work closely with pharmaceutical and chemical manufacturing customers to deploy AI-powered solutions in real lab-scale and GXP environments.
Added 5 months ago
Tunnel Engineer-Senior
GHD Group Pty Ltd
Markham, Ontario
Reservoir Characterization and Analysis: Plan, propose, and manage execution of reservoir characterization, modeling, simulation, and asset evaluation programs, including reservoir and…
Added 2 months ago
C
Senior ASIC Design Engineer - Client IP
Ciena
Ottawa, ON
- $109,000 to $174,000 CAD / year
- Full-time
…our team, we are looking for an enthusiastic digital design engineer who will be involved in the design of these products, working within a team of digital design engineers, verification…
Added 5 months ago
Bilingual Electrical and Automation Engineer
Steris Corporation
Quebec, Quebec
We are currently seeking a Bilingual Electrical and Automation Engineer to work with us on a Full-time/Permanent basis.As an expert in electrical engineering and automation, you will play a…
Added 4 months ago
Q
Systems Architecture, Senior to Staff – Agentic AI
Qualcomm
Markham, Ontario
- Full-time
Be part of the team developing next generation Edge AI subsystems and platforms. The Edge AI Systems Engineer is responsible for system architecture definition activities supporting a…
Added 5 months ago
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Software Engineer, Infrastructure (TOR)
Doppel
Toronto, ON
- Full-time
…strengthening employee resilience through threat-informed training and simulation. By unifying Digital Risk Protection, Human Risk Management and Email Security, Doppel connects threats…
Added 5 months ago
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Software Engineer, Detection (TOR)
Doppel
Toronto, ON
- $157,000 to $367,000 CAD / year
- Full-time
…strengthening employee resilience through threat-informed training and simulation. By unifying Digital Risk Protection, Human Risk Management and Email Security, Doppel connects threats…
Added 5 months ago
D
Machine Learning Engineer, Detection (TOR)
Doppel
Toronto, ON
- $183,000 to $429,390 CAD / year
- Full-time
…strengthening employee resilience through threat-informed training and simulation. By unifying Digital Risk Protection, Human Risk Management and Email Security, Doppel connects threats…
Added 5 months ago
SA
Senior Mechanical Engineer
Sanctuary AI
Vancouver, British Columbia
- Full-time
…for humanoid robots, is looking to hire a Senior Mechanical Engineer, reporting to the Mechanical Design Manager. In this role you will leverage your expertise in design, architecture, and…

Doppel

Software Engineer, Detection (TOR)

Toronto, ON, Canada

$157,000 to $367,000 CAD / year · Full-time

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Job details

Pay: $157,000 to $367,000 CAD / year
Job type: Full-time
Posting language: English
Posted: May 12, 2026

Original job description

Why Join Doppel

Doppel is building the future of social engineering defense. Our AI-native platform uses agentic AI to protect executives, employees, customers, and brands from phishing, impersonation, fraud, and other AI-powered threats across digital channels. We help some of the world’s most recognized brands detect and dismantle attacker infrastructure while strengthening employee resilience through threat-informed training and simulation. By unifying Digital Risk Protection, Human Risk Management and Email Security, Doppel connects threats into a real-time intelligence graph to power faster disruption, smarter defense, and modern security awareness at scale.

Backed by leading investors including Andreessen Horowitz and Bessemer Venture Partners, and trusted by leading enterprises, Doppel is a rapidly growing Series C startup building the future of social engineering defense. Our team combines deep cybersecurity expertise, operational rigor, and startup velocity to solve some of the internet’s most urgent trust and safety challenges.

What We're Building

We're building the AI-native social engineering defense platform.

This means we're designing scalable systems that monitor billions of domains, social media accounts, apps, dark web forums, etc., and leverage AI agents to identify and neutralize digital threats.

What We're Looking For

We’re looking for passionate engineers who love building and operating backend systems at scale - someone who can take ambiguous detection/product problems and deliver reliable production services and UIs that help our ops and customers find and remediate threats. You’ll focus on high-throughput ingestion, enrichment, scoring and alerting pipelines, APIs and dashboards, threat-linking infrastructure, and reliable automation that the stakeholder teams use every day.

Hands-on experience building production backend services or full-stack features (or equivalent). Proven record of shipping end-to-end: design → implementation → testing → monitoring → oncall.
Strong mastery of at least one backend language (Python, Go, Java, or Node) and comfort with web APIs, async processing, and service frameworks.
Solid system design skills: experience architecting scalable, fault-tolerant systems (sharding, caching, queueing, idempotency, backpressure).
Experience building and operating large data pipelines (batch or streaming), working with warehouses or OLAP systems for analytics, and designing efficient schemas for scale.
Deep practical experience with backend concerns: databases (SQL + NoSQL), caching, message queues, rate limiting, retries, and cost/latency tradeoffs.
Strong observability, debugging and incident response skills: structured logging, tracing, dashboards, SLOs/alerts, and the ability to triage and fix production issues.
Product ownership and excellent cross-functional communication - you’ll collaborate with Operations, Customer Success, Sales, to deliver measurable outcomes.

As part of our Toronto team, you’ll:

Work on a wide range of asks that protect billions of people from digital impersonation
Have complete end to end ownership - from directly collecting customer requirements to continuously iterating on shipped releases.
Mentor junior engineers, make key product decisions, and foster a high-performing team culture

What We Offer

🚀 A mission-driven culture with low ego, high ownership, deep customer obsession, and exceptional talent density

🍽️ Free lunch and dinner in the office

🌴 Flexible PTO

✈️ Quarterly team offsites

Join Doppel

Doppel is the first platform built to dismantle digital deception at scale. We scan over 150 billion entities daily and deploy continuously adaptive AI SOC agents, paired with expert human analysts, to uncover and disrupt the infrastructure behind phishing, impersonation, and online fraud before attacks can spread. Our Threat Grid turns every customer signal into shared intelligence, making each disruption smarter, faster, and more effective.

We’re not just another cybersecurity company. We’re defining the future of social engineering defense, where trust is protected, and deception becomes unprofitable. Backed by top-tier investors and trusted by some of the world’s most recognized brands, Doppel is growing fast. If you’re driven to solve real-world problems with bold technology, we’d love to meet you.

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More about this job

Responsibilities

Design and operate scalable backend systems and high-throughput data pipelines to identify and neutralize digital threats. You will take end-to-end ownership of features from requirement gathering to production monitoring and mentor junior engineers.

Requirements

Requires strong mastery of a backend language (Python, Go, Java, or Node) and deep experience with scalable system architecture and data pipelines. Candidates must have a proven track record of shipping production services and managing the full software development lifecycle.

Skills

Backend Development
System Design
Data Pipelines
Python
Go
Java
Node
SQL
NoSQL
API Design
Async Processing
Observability
Incident Response
Full-stack Development
Scalable Systems
Mentoring

Benefits

Free lunch and dinner in the office
Flexible PTO
Quarterly team offsites
Equity

Visa sponsorship

Not detected in the job text

Keywords

Software Engineering
Detection
AI
Social Engineering Defense
Backend Services
High-throughput Ingestion
Enrichment Pipelines
Threat-linking Infrastructure
Sharding
Caching
Queueing
Idempotency
Backpressure
OLAP
Message Queues
Rate Limiting
Structured Logging
Tracing
SLOs
Cybersecurity
Phishing
Impersonation
Online Fraud
SOC Agents
Threat Grid
Distributed Systems
Full-stack
API
Data Warehousing

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