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Added 4 mins ago
M
Software Engineer II, Core Edge Processing
Marqeta
Remote, Canada
- Full-time
- Remote
As Marqeta's Software Engineer II on the Core Edge Processing team, you will write and ship production code at the heart of our processing systems, learning alongside senior engineers on a…
Added 4 mins ago
M
Staff Software Engineer - Core Edge Processing
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Remote, Canada
- Full-time
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As Marqeta's Staff Software Engineer on the Core Edge Processing team, you will write and review production code at the heart of our processing systems, drive the initiatives that make them…
Added 48 mins ago
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Freelance Mechanical CFD Engineer - AI Trainer
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- Part-time
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Added 1 hour ago
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Senior Full Stack Engineer, Customer & Cardholder Experiences
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- Full-time
- Remote
We are looking for a Senior Full Stack Software Engineer to join our Customer & Cardholder Experiences team, delivering innovative UIs and embeddable solutions to transform the experience…
Added 1 hour ago
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Technical Project Manager
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- $130,000 to $145,000 CAD / year
- Full-time
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…project plans in collaboration with Engineering and the Solutions Engineer, translating customer requirements and solution briefs into structured, executable delivery…
Added 5 hours ago
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Added 7 hours ago
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Senior Analytics Engineer
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Remote, Canada
- Full-time
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Lightspeed's Data Office is hiring a Senior Analytics Engineer to design and own the data models that drive decisions across financial performance, GTM activities, and product insights.…
Added 7 hours ago
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Senior Analytics Engineer
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- Full-time
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Lightspeed's Data Office is hiring a Senior Analytics Engineer to design and own the data models that drive decisions across financial performance, GTM activities, and product insights.…
Added 15 hours ago
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Security Engineer II - Identity and Access Management
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- Full-time
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We’re seeking an experienced Security Engineer II with a strong passion for Identity and Access Management (IAM) and expertise in cloud-native environments, particularly AWS. You'll build,…
Added 18 hours ago
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Senior Software Engineer - Card Network Integration
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Marqeta is seeking a skilled Senior Software Engineer to join the Network File Integration team. In this role, you will help design and deliver scalable software solutions for batch and…
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Staff Software Engineer – Data Systems
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Remote, Canada
- Full-time
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Purpose Unlimited is building the financial products infrastructure that puts clients first, and we need the engineer who ensures that infrastructure is fast, reliable, and built to evolve.…
Added 22 hours ago
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Principal Product Manager, Sandboxes
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- Full-time
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…developer infrastructure, and prior experience as a software engineer. You will need to understand containers, sandboxes/microVMs, virtualization technologies, hypervisors, the software…
Added 22 hours ago
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Freelance Mechanical CAD&Simulation Engineer - AI Trainer
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- Part-time
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Added 1 day ago
FF
Principal Software Engineer
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- $200,000 to $250,000 CAD / year
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…analytical capabilities. We’re seeking a seasoned Principal Engineer with an architect’s mindset to own the technical vision and execution. As a technical leader, you will be instrumental…
Added 1 day ago
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Senior Quality Engineer/Lead - EN 323
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Senior Software Engineer 18: Salaries typically range from $96,557 to $128,743 annually, based on qualifications and experience plus a performance-based incentive of 15%
Added 1 day ago
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Sales Engineer, Eastern Canada
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- Full-time
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Added 1 day ago
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Software Developer
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- Full-time
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Proven experience as a Software Engineer or similar role in a fast-paced environment
Added 1 day ago
TD
Manager, Solutions Architecture (Amazon Connect & Zendesk)
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- $186,000 to $222,000 CAD / year
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AWS certifications (Solutions Architect, DevOps Engineer)
Added 1 day ago
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Senior Solution Engineer
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Remote, Canada
- $162,000 to $212,625 CAD / year
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We are seeking a Senior Solution Engineer to drive complex customer solutions and close large deals. Working directly with sales teams and channel partners, you will be the technical expert…
Added 1 day ago
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Staff Software Engineer, Program Structure & Trust
Vanta
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…enterprises trust to run their security programs. We are hiring an engineer who will own the architectural foundation that makes it work for their most complex organizational…
Added 1 day ago
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Software Engineer Co-op, Apps
Solink
Remote, Canada
- $55,000 to $68,000 CAD / year
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We are seeking a motivated Software Engineer Co-Op or Intern to join our R&D team. In this role, you’ll gain hands-on experience in full-stack development, working on both front-end and…
Added 1 day ago
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Senior Support Engineer
Town Web
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Added 1 day ago
TI
Senior Software Engineer
Thri5 Inc.
Remote, Canada
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As a Senior Software Engineer at Thri5, you'll play a key role in building and scaling our product. You'll own significant technical problems from design through production, working closely…
Added 2 days ago
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AI Solution Architect
Workana
Remote, Canada
- Contract
- Remote
Active certifications such as Microsoft Certified: Azure Solutions Architect Expert, Azure AI Engineer Associate, or Google Cloud Professional Machine Learning Engineer.
Added 2 days ago
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AI Solution Architect
Workana
Remote, Canada
- Contract
- Remote
Active certifications such as Microsoft Certified: Azure Solutions Architect Expert, Azure AI Engineer Associate, or Google Cloud Professional Machine Learning Engineer.

DuckDuckGo

Senior Web Compatibility Engineer

Remote, Canada

Remote

$178,500 USD / year · Full-time

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Job details

Pay: $178,500 USD / year
Job type: Full-time
Workplace: Remote
Experience: 7+ years of experience building and debugging complex web applications with vanilla JavaScript.
Working hours: 40 hours per week
Posting language: English
Posted: Oct 2, 2026

Original job description

Who We Are

Hi, we're DuckDuckGo, the online protection company and remote-first team of 300+ on a mission to raise the standard of trust online. Founded in 2008 and profitable since 2014, annual revenue now exceeds $100m USD and millions use our browser on Mac, Windows, iOS, and Android, our search engine, and the latest - Privacy Pro. Our culture of trust, inclusivity, and empowered project management underpins everything we do, where each team member takes full ownership of their projects, from scoping and execution to postmortem. If you're seeking end-to-end ownership of your work - you've come to the right place!

Your Team and Role

Working on the Web Dependability Engineering team, you'll make sure websites just work in DuckDuckGo's browsers across Mac, Windows, iOS, and Android, helping ensure our users have the best-possible experience browsing with DuckDuckGo. Recent projects include:

Reverse-engineering how sites detect our privacy protections and building countermeasures that keep pages working
Shimming browser APIs so sites work seamlessly across different browser engines and system webviews
Building LLM agent pipelines that automatically reproduce and triage reported site breakage

As a Senior Web Compatibility Engineer, you'll be our resident expert on why websites break and how to fix them: owning the webcompat side of our triage process, debugging gnarly issues in code you don't control, distinguishing site bugs from browser bugs from privacy protection-induced breakage, leading the charge when a top site breaks and becomes an incident, shipping durable fixes across every platform, and work on related projects that prevent user churn and keep users coming back to DuckDuckGo.

About You

7+ years of experience building and debugging complex web applications with vanilla JavaScript.
Detailed knowledge of web standards, web components, and browser APIs. Any additional experience with our stack is a bonus: Swift/Kotlin/C#/C++/Python.
Advanced ability to reverse-engineer obfuscated third-party code and reduce issues to minimal test cases.
Passion for hunting elusive bugs and tracing them to their root cause.
Interest in automating repetitive work and building agentic tooling that multiplies the team's impact.
Experience triaging issues, leading incident response, and communicating clearly with technical and non-technical stakeholders.
Experience shipping code beyond the web, like native or desktop clients.
Ability to lead complex, ambiguous projects with little to no oversight.

Compensation

$178,500 USD annually and stock options. Compensation is identical within professional levels, regardless of geographic location or team. Compensation for each professional level is transparent across the organization.

Eligibility for company-sponsored health benefits is limited to team members based in the United States. This program does not extend to team members located in other countries, such as Canada or the UK.

Our Team Member Support Guide explains how we prioritize your wellbeing including paid parental leave, office setup, and co-working allowances.

Hiring Process

Hiring works best when it's a two-way street. Learn how we help you get to know DuckDuckGo, envision your future role here, and find out more about how we hire.

Diversity, Equity and Inclusion

DuckDuckGo provides equal work opportunities to all team members and applicants, and it prohibits discrimination and harassment of any type on the basis of race, color, ethnicity, caste, religion, age, sex (including pregnancy), national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by our policies or federal, state, or local laws.

We want to ensure that our hiring process is accessible. If you need reasonable accommodation for any part of the application process because of a medical condition or disability, please send an email to careers@duckduckgo.com to let us know the nature of your request.

Please note that:

You’ll be required to attend meetings on camera via video conferencing
Expect to travel at least two times a year: once for our all-hands meetup and again for a team retreat (each around 4-5 days). While extenuating circumstances may impact attendance, everyone is strongly encouraged to attend.
While we offer a flexible work arrangement with no core hours, expect an average full-time commitment of 40 hours per week.
A successful candidate must pass a background check as a condition of joining the team.
By applying for this role, you confirm that all information submitted is accurate and complete. You further acknowledge that providing false or fraudulent information during the application process is cause for denial of an offer, revocation of any existing offer, or other adverse action, up to and including termination after the start of your commencement of work.

Disclosure Statement: Use of AI in Hiring Process

As part of our commitment to enhancing our recruitment process, we utilize artificial intelligence (AI) technology to assist in reviewing and summarizing job applications and test projects, including those tools integrated into our recruitment vendor platforms. We use AI to flag potentially fraudulent applications, analyze and summarize applicants’ experience, interviews, and project performance, and help streamline our selection process.

Key Principles:

Data Privacy: All information provided in your application will be handled in accordance with our Recruiting Privacy Policy. We ensure that your personal information is protected and used solely for recruitment purposes.
Human Oversight and Accountability: The AI technology is designed to support our hiring team by providing insights and summaries of applications and evaluations of test projects against scoring rubrics. All final evaluations and hiring decisions, however, will be made by our hiring team, who will consider the AI's input alongside other factors.
Transparency: We believe in transparency regarding our hiring practices. If you have any questions about how AI is used in our recruitment process, please feel free to reach out to us.

By submitting your application, you acknowledge and consent to the use of AI technology in our review process. If you would like to request an alternative selection process, please contact us as at careers@duckduckgo.com. Thank you for your interest in joining DuckDuckGo!

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More about this job

Responsibilities

You will be responsible for ensuring web compatibility across DuckDuckGo browsers by debugging complex issues and developing countermeasures for site breakage. This role involves leading incident responses, triaging technical problems, and building automated tools to improve team efficiency.

Requirements

Candidates must have 7+ years of experience in building and debugging complex web applications using vanilla JavaScript. Proficiency in web standards, browser APIs, and the ability to reverse-engineer obfuscated code is essential for this role.

Skills

JavaScript
Web standards
Browser APIs
Reverse engineering
Debugging
Swift
Kotlin
C#
C++
Python
Incident response
Web components
Triage
Automation
Technical communication

Benefits

Stock options
Health benefits
Paid parental leave
Office setup allowance
Co-working allowance

Remote locations

Argentina
Austria
Bosnia and Herzegovina
Brazil
Bulgaria
Canada
Cyprus
Czechia
Estonia
Hungary
Iceland
Ireland
Israel
Japan
Kyrgyzstan
Latvia
Malta
Mauritius
Mexico
Poland
Portugal
Romania
Singapore
Slovakia
South Africa
Spain
Switzerland
UK
Uruguay
USA

Remote locations (standardized)

Argentina
Austria
Bosnia and Herzegovina
Brazil
Bulgaria
Canada
Cyprus
Czechia
Estonia
Hungary
Iceland
Ireland
Israel
Japan
Kyrgyzstan
Latvia
Malta
Mauritius
Mexico
Poland
Portugal
Romania
Singapore
Slovakia
South Africa
Spain
Switzerland
United Kingdom
United States
Uruguay

Visa sponsorship

Not detected in the job text

Keywords

Web Compatibility
JavaScript
Browser Engines
Web Standards
Reverse Engineering
Debugging
Swift
Kotlin
C#
C++
Python
LLM
Automation
Incident Response
Web Components
Browser APIs
Remote-first
Privacy Protection
Triage
Software Engineering

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