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Added 9 mins ago
AP
Business Intelligence Engineer
Arobas Personnel
Toronto, ON
- Full-time
Arobas Personnel is seeking a Business Intelligence Engineer for a mandate with one of its clients located in Toronto.
Added 9 mins ago
AP
Senior Business Intelligence Engineer
Arobas Personnel
Toronto, ON
- Full-time
Arobas Personnel is seeking a Senior Business Intelligence Engineer for a mandate with one of its clients located in Toronto.
Added 9 mins ago
E
Field Service Engineer
Ecolab
Calgary, AB
- Full-time
The Field Service Engineer supports customers globally and reports to the Manager, Field Service Operations. The Field Service Engineer is responsible for aspects of deployments,…
Added 9 mins ago
I
Custom IC Layout Engineer
Inpho
Ottawa, ON · Kanata, ON
- Full-time
…emerging connectivity demands. Inpho is ramping up commercial and product development efforts to support data connectivity at 1.6T and beyond. As the organization grows, it is seeking…
Added 21 mins ago
A
Sr. Support Operations Manager
Ashby
Canada
- Full-time
…we've built out dedicated functions to support it: a Systems Engineer keeping our tooling running, a Workforce Management practice ensuring we have the right coverage at the right times, a…
Added 21 mins ago
LC
Industrial Engineer, Retail Technology Optimization
Loblaw Companies Limited
Brampton, ON
- Full-time
…teams across Labour Management, Operations, Experience Design, Product and…
Added 21 mins ago
GS
Artificial Intelligence Engineer
Gala Solutions
Montreal, QC
- Contract
…- Kubernetes, cloud (AWS, Azure, and/or Google), API-based development, REST framework, data engineering, large-scale API gateway environments, etc. Knowledge of AIML and hands-on…
Added 24 mins ago
B
Account Executive - Full-Cycle (North America)
Botpress
Montreal, QC
- Full-time
Remain attuned to industry trends to inform our product development and strategic direction
Added 25 mins ago
Co-op/Intern - Electrical Engineer
Gerdau
Selkirk, MB
…on trust and teamwork, we offer meaningful work, continuous development, and opportunities to shape your future. We invite you to come work with us, where your contributions are valued,…
Added 25 mins ago
Full Stack Engineer, Client Performance and Management Information (CPMI)
HSBC Global Services Limited
Toronto, ON
Join the Client Performance and Management Information (CPMI) technology team in Toronto as a Software Engineer focused on full stack development across JavaScript, Node.js, and modern…
Added 41 mins ago
I(
Senior Aeronautical Structural Engineer
ITPS (Canada) LTD
London, ON
- Full-time
ITPS Canada is seeking an experienced Senior Aeronautical Structural Engineer to support the design, development, modification, and certification of aircraft and airborne systems across a…
Added 54 mins ago
BP
Senior Production Engineer Scheduling
BNP Paribas
Montreal, QC
- Full-time
…Global Head of Automation Services in EMEA, the production Engineer will be accountable for the technical support as well as the projects delivery for the Production and non-production…
Added 54 mins ago
N
Staff Optical Engineer
Nokia
Ottawa, ON · Kanata, ON
- Full-time
As a Staff Optical Design Verification Test (ODVT) Engineer, you will lead the comprehensive testing, validation, and performance characterization of the next generation of coherent…
Added 54 mins ago
B
Engineering Director, IT Cooling
Brunel
Calgary, AB
- $180,000 to $230,000 CAD / year
- Full-time
…play a key role in shaping engineering strategy, supporting product development, and enabling long-term organizational…
Added 56 mins ago
C
Senior Consultant, Digital Analytics - Simplii Financial
CIBC
Toronto, ON
- Full-time
Strategy Development You use data insights to develop and refine digital marketing and business strategies, including Marketing Pixels, and translate complex findings into clear, actionable…
Added 56 mins ago
Electrician
INNIO
Welland, ON
…Welland Ontario Canada, reporting to the Lead Production Test Engineer. In this role, you will lead the operation and troubleshooting of highly complex engine, generator and test bench…
Added 56 mins ago
M
Full-Stack Software Engineer
Manulife
Toronto, ON · Waterloo, ON
- Full-time
…illustration experience. We are seeking a Full-Stack Software Engineer to join our Calculations Squad and develop capabilities that help advisors and customers make informed life insurance…
Added 1 hour ago
TR
JREQ203081 Staff Software Engineer I (Open)
Thomson Reuters
Toronto, ON
- Full-time
…engineering problem to solve, not a fact of life. You use AI-assisted development as a primary tool, with the majority of code written with AI assistance. And you practice verified…
Added 1 hour ago
Senior Software Developer, Mobile (iOS), Platforms and Devices
Google
Waterloo, ON
Write and test product or system development code.
Added 1 hour ago
E
Staff Eng, API Design & Governance
eBay
Toronto, ON
- Full-time
We are hiring a Staff Engineer, API Design & Governance to help shape the architecture, quality, and long-term evolution of the systems and APIs that power these experiences. This is an…
Added 1 hour ago
SI
Senior iOS Engineer
Scribd, Inc.
Toronto, ON · Vancouver, BC
- Full-time
We are seeking a Senior iOS Engineer to join our Growth Retention & Monetization team. You will be the iOS technical owner for the team across the Everand and Scribd apps, and lead the…
Added 1 hour 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
Project Manager (Infrastructure & Facilities)
The City of Red Deer
Red Deer, AB
The Project Manager/Engineer reports to the Capital Projects Engineer in the planning and delivery of municipal capital projects and municipal facility upgrades as assigned. This includes…
Added 1 hour ago
LC
Engineer - Process
Linamar Corporation
Guelph, ON
- Full-time
Linamar Corporation is a Canadian-founded global manufacturer, renowned for its advanced engineering and innovative product development across diverse industries and markets. Our journey…
Added 1 hour ago
LC
Mechanical Design Engineer- Continuous Improvement
Linamar Corporation
Guelph, ON
- Full-time
Reporting to a Design Engineering Supervisor, the successful candidate will work on small to medium sized product design and development projects to resolve production issues from a design…

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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