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Added 10 mins ago
C
Automation Tester
CGI
Toronto, ON
- Full-time
We are seeking an experienced Selenium Automation Tester to support quality engineering initiatives within a Banking and Capital Markets environment.
Added 12 mins ago
CT
Merchandising Capability Analyst
Canadian Tire Corporation
Calgary, AB · Quarry Park
- Full-time
Experience with digital tools, enterprise platforms, data and reporting solutions, automation, or AI-enabled capabilities is considered an asset.
Added 12 mins ago
SI
Cloud Solutions Architect
STACK IT Recruitment
Remote, Canada
- Full-time
- Remote
The role offers a greenfield product to own end-to-end, with the autonomy to make the architectural calls that shape it.
Added 26 mins ago
TR
JREQ203081 Staff Software Engineer I (Open)
Thomson Reuters
Toronto, ON
- Full-time
…evaluation instincts, enterprise-grade security awareness, and a product-minded approach to developer experience - treating each tool’s contract as a product in its own…
Added 27 mins ago
E
Automation Specialist
Ecolab
Calgary, AB · CAN-Calgary Office Liquid Lab
- Full-time
…supercomputers, and desktop computers is seeking a talented Automation Specialist who will be responsible for designing, developing, and implementing automation solutions to support…
Added 40 mins ago
D
Product Scrum & Functional Consultant - Operate
Deloitte
Toronto, ON
- Full-time
Use industry standard project management processes, tools and ceremonies to deliver product roadmap goals
Added 40 mins ago
FT
Lead Software Engineer
Franklin Templeton
Toronto, ON
- Full-time
Focus on automation, new Snowflake capabilities, and AI-assisted development
Added 1 hour ago
R
Strategic Operations Manager - Partnerships
Relay
Toronto, ON
- Full-time
…work with cross-functional teams (Partner Sales, Marketing, Product, Data, RevOps, and Engineering) to deliver enablement, data, and operational tools for our partners to succeed and grow.…
Added 1 hour ago
VC
Product Growth Marketing Manager, Lifecycle & GTM Systems
Valsoft Corporation
Remote, Canada
- Full-time
- Remote
Orchestrate the GTM stack (CRM, app telemtry, data enrichment, and automation tools) so product, marketing, and sales data flow cleanly between systems.
Added 1 hour ago
TT
Design Specialist -- Test (Senior)
Teledyne Technologies Incorporated
Waterloo, ON · Canada - Waterloo, ON
- Full-time
Proficiency in required programming, automation and analysis tools:
Added 1 hour ago
AI
Manufacturing Engineer
Apex Industries Inc.
Moncton, NB
- Full-time
The Manufacturing Engineer will play a key role in driving operational excellence, continuous improvement, automation, process development, and technology integration across the Aerospace…
Added 1 hour ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 1 hour ago
IS
Software Development Manager
Intellijoint Surgical
Kitchener, ON
- Full-time
…the successful delivery of software products across multiple product lines. This role plans, coordinates, and manages the development and release of compliant software solutions for our…
Added 1 hour ago
AI
Manufacturing Engineer
Apex Industries
Moncton, NB
- Full-time
The Manufacturing Engineer will play a key role in driving operational excellence, continuous improvement, automation, process development, and technology integration across the Aerospace…
Added 2 hours ago
RS
Director, Customer Success Operations & Education
Redwood Software
Toronto, ON
- $150,000 to $170,000 CAD / year
At Redwood, we empower our customers with lights-out automation for their mission-critical business processes.
Added 2 hours ago
AI
Senior QA
AI Interviews
Toronto, ON · Greater Toronto Area, Canada
- Contract
We are looking for a Senior QA Engineer with strong experience in automation testing of mobile and web applications. The ideal candidate should have hands-on experience with Appium, mobile…
Added 2 hours ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- $75,200 to $107,160 CAD / year
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 2 hours ago
A
CX Systems Lead
Allshores
Toronto, ON
- $95,000 to $105,000 CAD / year
- Full-time
Experience applying AI-enabled tools to customer insight, analytics, automation, or decision support, with an understanding of responsible AI governance
Added 2 hours ago
RG
Senior Engineering Manager
Regiondo GmbH
Toronto, ON
- Full-time
…their codebases. The teams will continue delivering meaningful product improvements while placing increased emphasis on stability, reliability, performance, maintainability, and operational…
Added 2 hours ago
IT Business Analyst (On Call)
Okanagan College
Kelowna, BC
…reviews, and post-deployment validation, while advocating for test automation tools where…
Added 3 hours ago
TR
AI Product Security Manager
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
Experience building and integrating security tooling, APIs, and automation into developer workflows, including the use of SAST, SCA, and DAST.
Added 3 hours ago
T
Associate – Front Office Quant Engineer
TD
Toronto, ON
- Full-time
…develops and enhances pricing models, risk analytics, trading tools, and automation solutions that enable efficient execution, risk management, and client service across a broad range of…
Added 3 hours ago
T
TD Insurance, Counsel, Quality Counsel Oversight
TD
Toronto, ON · Markham, ON
- Full-time
Identify opportunities to leverage data, automation, and AI.
Added 3 hours ago
M
Spécialiste principal(e), Services médicaux / Senior Specialist, Medical Services
MSD
Kirkland, QC
- Full-time
Added 3 hours ago
C
Engineering Lead Analyst - VP
Citi
Mississauga, ON
- Full-time
Recommend product customization for system integration

Leyton

Full Stack Engineer

AB, Canada
Alberta, Canada, Canada

€30,000 to €50,000 EUR / year · Full-time

Apply About employer

Applications open in a new tab.

Job details

Pay: €30,000 to €50,000 EUR / year
Job type: Full-time
Apply by: Oct 29, 2026
Posting language: English
Posted: Sep 29, 2026

Original job description

Full-Stack Engineer (Junior & Senior Levels)

Build AI Products. Own Them. Shape the Future of Engineering in Barcelona.

Full-Time | Permanent

Location: Barcelona, Spain

Open to candidates across North America (United States & Canada)

Relocation to Barcelona, Spain is required

Visa sponsorship and relocation support available

Target Start Date: January 2027 (or as soon as work authorization is completed)

About Mainloop

Mainloop is a new AI-native engineering team based in Barcelona, built from the ground up inside an established international group.

We combine the energy of a startup with the stability, customers, and global reach of an organization that has been operating for decades.

Our mission is to build software that transforms how professional-services businesses operate by automating complex processes, reducing administrative work, and creating products that teams rely on every day.

The group has operated a technology lab in Casablanca for more than eight years. Barcelona is our second technology hub, created to be closer to the businesses we support and built with AI at the center from the beginning.

We are building the team now, and this is an opportunity to help shape how modern engineering teams work.

The Opportunity

We are hiring Full-Stack Engineers at two levels:

Junior Full-Stack Engineers

We are looking for early-career engineers who are curious, ambitious, and excited about the future of AI-assisted software development.

You do not need years of production experience. What matters is:

You can build working applications.
You enjoy learning quickly.
You have experimented with AI coding tools.
You want to become exceptional at building software with modern AI workflows.

Senior Full-Stack Engineer

We are looking for an experienced engineer who has owned production software and can help define architecture, engineering standards, and development practices as the team grows.

You will help shape how products are built, maintained, and scaled.

What You Will Do

As a Full-Stack Engineer at Mainloop, you will own products from development through long-term success.

You will:

Build and maintain software products used by teams across multiple countries.
Partner with Product Owners to translate business needs into technical solutions.
Design scalable architectures and make strong engineering decisions.
Develop frontend and backend applications.
Review, improve, and maintain existing codebases.
Use AI coding agents to accelerate development while maintaining quality.
Build features, write tests, and ship reliable software.
Own production quality and continuously improve the products you support.
Help define engineering practices, tools, and standards as the team grows.

AI-Native Engineering Environment

Mainloop is not a traditional engineering team that added AI tools afterward.

AI is part of how we build from day one.

You will work with:

AI coding agents such as Claude Code, Cursor, Codex, and similar tools.
AI-assisted development workflows.
Automated code review processes.
Modern testing and deployment practices.
Shared engineering patterns across our products.

The goal is not simply to write code faster.

The goal is to become better engineers by spending more time on:

Architecture
Problem solving
Product decisions
Quality
Technical judgment

What We Are Looking For

We are looking for engineers who enjoy ownership and building things that matter.

You may be a strong fit if you have:

Experience building web applications across frontend and backend.
Strong understanding of software engineering fundamentals.
Experience with modern development frameworks and technologies.
Ability to understand existing codebases and improve them.
Interest in AI-assisted development and modern engineering workflows.
Strong problem-solving skills and attention to quality.
Ability to communicate clearly in English.

For the Senior Engineer role, we are looking for:

Experience owning production applications.
Ability to make architecture decisions.
Experience mentoring or guiding other engineers.
Strong judgment around technical trade-offs.

For the Junior Engineer role, we are looking for:

Ability to build a complete working application.
Personal projects, internships, university projects, or early professional experience.
Curiosity and motivation to grow quickly.
Experience experimenting with AI coding tools.

Technology & Engineering Practices

We believe strong engineering comes from good systems.

Our teams focus on:

Consistent architecture patterns across products.
Automated testing.
Code quality and review processes.
Continuous improvement.
Clear ownership.

We use standards where they help, and we adapt when a problem genuinely requires something different.

The Mainloop Barcelona Certificate

We are building a structured engineering development program focused on:

AI-native software development.
Product ownership.
Architecture.
Building reliable applications.
Taking software from idea to production.

Engineers who complete the program and demonstrate mastery will receive the Mainloop Barcelona Certificate - a recognition of their ability to build modern software using AI-powered engineering methods.

Relocation & Benefits

For candidates relocating from North America, Mainloop provides:

Visa sponsorship support.
Relocation assistance.
Initial accommodation support.
Assistance with local administration.
Spanish language support.

Additional benefits include:

Permanent full-time employment contract in Spain.
Healthcare coverage from day one.
30 calendar days of annual vacation plus public holidays.
Opportunity to work across international markets.
Career growth within a global organization.
The opportunity to help build a new AI-native engineering team.

Why Barcelona?

Barcelona offers:

A strong international technology ecosystem.
A vibrant engineering community.
Excellent quality of life.
Access to European markets.
A multicultural environment.

This is an opportunity to build your engineering career at the intersection of:

Software Engineering + Artificial Intelligence + Product Ownership + Global Impact

Hiring Process

Our process is designed to understand how you think and build:

Introductory conversation
Learn about your background, experience, and what you are looking for.
Engineering discussion
Walk us through something you have built and discuss your technical decisions.
Conversation with our global technology team
Learn more about how we build and where we are going.
Practical project
Complete a real engineering exercise using the tools and workflow we use internally.

Apply with something you have built and tell us about a technical decision you made, what you learned, and how you would approach it differently today.

Mainloop | Barcelona, Spain

Building the future of AI-native engineering.

Apply About employer

More about this job

Responsibilities

Build, maintain, and own full-stack software products from development through long-term production quality, working with Product Owners to turn business needs into technical solutions. Make architecture and engineering decisions, use AI coding agents and modern testing practices, and help establish engineering standards as the team grows.

Requirements

Candidates should be able to build web applications across frontend and backend, understand software engineering fundamentals, improve existing codebases, and communicate clearly in English. Senior candidates should also have production ownership, architecture decision-making, and mentoring experience; junior candidates should demonstrate the ability to build a working application and motivation to grow with AI coding tools.

Skills

Full-Stack Development
Frontend Development
Backend Development
Web Application Development
Software Architecture
Production Software Ownership
AI-Assisted Development
AI Coding Agents
Automated Testing
Code Review
Codebase Maintenance
Product Ownership
Problem-Solving
Technical Decision-Making
Mentoring
English Communication

Benefits

Visa Sponsorship Support
Relocation Assistance
Initial Accommodation Support
Local Administration Assistance
Spanish Language Support
Healthcare Coverage
30 Calendar Days Of Annual Vacation Plus Public Holidays
Career Growth Opportunities

Visa sponsorship

Detected

Keywords

Full-Stack Engineering
Frontend Applications
Backend Applications
Web Applications
AI-Native Engineering
AI-Assisted Development
Claude Code
Cursor
Codex
AI Coding Agents
Software Architecture
Product Ownership
Production Applications
Automated Testing
Automated Code Review
Code Quality
Engineering Standards
Continuous Improvement
Deployment Practices
Technical Trade-Offs
Business Process Automation
Professional Services
Barcelona
Relocation
Visa Sponsorship

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