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Added 11 mins ago
TT
Design Specialist -- Test (Senior)
Teledyne Technologies Incorporated
Waterloo, ON · Canada - Waterloo, ON
- Full-time
…reliability. These markets include aerospace and defense, factory automation, air and water quality environmental monitoring, electronics design and development, oceanographic research,…
Added 25 mins ago
BS
Senior Technology Risk Analyst
Brainhunter Systems Ltd
Toronto, ON
- Contract
Brainhunter is currently seeking the services of a “Senior Technology Risk Analyst” for a contract opportunity with one of our Valued Clients.
Added 25 mins ago
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Senior Corporate Communications Specialist - Banking
BeachHead
Toronto, ON
- $50.72 to $60.87 CAD / hour
- Contract
Working with one of our top financial clients, this role calls for a Senior Corporate Communications Specialist - Banking. This position offers an exciting opportunity to lead internal…
Added 25 mins ago
ZS
Senior SAP S/4HANA Finance Lead Consultant
Zodiac Solutions, Inc
Calgary, AB
- Full-time
Role OverviewWe are seeking a highly experienced Senior SAP S/4HANA Finance Lead Consultant to lead finance transformation, optimization, and innovation initiatives within a recently…
Added 40 mins ago
D
Modeling & Risk Management - Senior Risk Analyst
Driven
ON · Ontario, Canada
- Full-time
Be the human anchor in a function being redesigned around AI – ensuring accountability and strategic value scale with automation
Added 40 mins ago
AI
VP, Centralized Operations
Alectra Inc.
Woodbridge, ON
- Full-time
As Vice President, Centralized Operations, you will provide senior leadership for the operation and performance of the electricity distribution system's critical infrastructure, including…
Added 52 mins ago
M
Lead IGA Solution Architect
McKesson
Mississauga, ON
- Full-time
As a senior architecture leader, you will partner with cybersecurity, infrastructure, application, HR, compliance, audit, and business teams to design scalable identity solutions that…
Added 52 mins ago
M
IAM Sr. Developer, IGA
McKesson
Mississauga, ON
- Full-time
McKesson is seeking an experienced Senior Identity Governance & Administration (IGA) Developer to design, develop, and support enterprise identity security solutions in a complex, highly…
Added 52 mins ago
NR
Planning and Analytics - Senior Financial Analyst
Norton Rose Fulbright
Toronto, ON
- Full-time
Dashboard Development & Automation – Support the development and enhancement of Power BI, Tableau, and other reporting solutions to improve efficiency and reduce manual processes.
Added 52 mins 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 54 mins ago
HR
Technical Safety Specialist
Hitachi Rail
Toronto, ON
- Full-time
Minimum 10 years of experience in a senior technical role in train control systems or automation in other industries such as aerospace, defense, automotive, medical or nuclear
Added 54 mins ago
M
Senior Account Manager
MEDFAR
Montreal, QC
- Full-time
Experience commercializing artificial intelligence, automation, or telephony solutions.
Added 54 mins ago
LT
Automation Engineer
Lorven Technologies Inc.
Mississauga, ON
- Contract
Role: Senior QA Automation Engineer (Playwright)
Added 54 mins 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 54 mins ago
LT
Senior QA Automation Engineer (Playwright)
Lorven Technologies Inc.
Mississauga, ON
- Contract
We are looking for a Senior QA Automation Engineer with strong expertise in Playwright-based test automation and a solid background in manual testing. You will be responsible for ensuring…
Added 54 mins ago
GI
Talent Acquisition Manager
Green Infrastructure Partners
Markham, ON
- Full-time
Act as a trusted advisor to Hiring Managers and senior leaders, providing guidance on hiring strategies, market trends, and talent availability.
Added 54 mins ago
ZS
Senior Java Developer
Zodiac Solutions, Inc
Toronto, ON
- Full-time
Strong knowledge of automated testing methodologies and test automation frameworks.
Added 54 mins ago
PC
Deals Real Assets, Data Engineering & Digital Solutions, Senior Associate
PwC Canada
Vancouver, BC
- Full-time
As a Deals, Real Assets Senior Associate – Data Engineering & Digital Solutions, unlock your potential and embrace the chance to drive meaningful outcomes that'll elevate your career. Your…
Added 1 hour ago
MF
Director Threat Intelligence
Mackenzie Financial Corporation
Toronto, ON · Greater Toronto Area, ON
- Other
…systemic constraints across multiple teams, and influences senior stakeholders on investment, resilience, and risk trade-offs, translating enterprise considerations into actionable…
Added 1 hour ago
M
Senior Account Manager
Medfar
Montreal, QC
- Full-time
Experience commercializing artificial intelligence, automation, or telephony solutions.
Added 1 hour ago
SE
Site Service Automation Specialist
Schneider Electric
AB · Edmonton, AB
- $75,200 to $112,800 CAD / year
- Full-time
Join Schneider Electric's Industrial Automation Services team and become a trusted technical advisor to customers operating critical infrastructure and process environments.
Added 1 hour ago
WI
Linear BIM Specialist, Rail and Transit
WSP in Canada
BC · British Columbia, Canada
- Full-time
Ability to manage senior CAD/BIM staff across multiple offices in a matrix environment.
Added 1 hour ago
O
Sr. Engineer Network Administration
OnX
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Engineer - Network Administration to join our Infrastructure Management team. In this role, you will be responsible for designing, administering,…
Added 1 hour ago
O
Sr. Engineer System administrator
OnX
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Systems Administrator to join our Infrastructure Services team. This role is ideal for a hands-on technical professional who thrives in complex…
Added 1 hour ago
RG
Senior Engineering Manager
Regiondo GmbH
Toronto, ON
- Full-time
Senior Engineering Manager – Checkfront & Regiondo

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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