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Added 28 mins ago
A
Intermediate Software Engineer
AltaML
Toronto, ON
- $90,000 to $110,000 CAD / year
- Full-time
We overpay for the right people. We'd rather pay a premium for an engineer who embodies this and multiplies the team than save money on someone who doesn't.
Added 28 mins ago
M
Senior Full Stack Java Engineer
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to design, build, test, and maintain reliable full-stack applications. You will use Java and Spring Boot to develop scalable backend…
Added 28 mins ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build reliable solutions for forecasting, staffing, scheduling, real-time adherence,…
Added 28 mins ago
H
Senior Full Stack Engineer (Azure Cloud Platform)
HCLTech
Calgary, AB
- Full-time
We are looking for a hands-on Senior Cloud-Native Full Stack Engineer to design, build, and support secure, scalable applications on Microsoft Azure. This role combines modern full-stack…
Added 43 mins ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build reliable solutions for forecasting, staffing, scheduling, real-time adherence,…
Added 43 mins ago
M
Senior Full Stack Java Engineer - CX & Contact Center Solutions
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to provide hands-on technical leadership across CX and contact center solutions. You will shape scalable solutions using Java, Spring Boot,…
Added 58 mins ago
V
Mobile Application Developer - Consumer Social Platform
VAZA
Toronto, ON · Greater Toronto Area, Canada
- Full-time
We're looking for a Full Stack Mobile Software Engineer to build and scale VAZA's native iOS and Android apps. You'll work directly with the founding team to ship new features, sharpen…
Added 1 hour ago
AI
Amazon Connect Engineer – Contact Center, AWS, IVR & Java
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
Strong Java development skills; knowledge of Python and JavaScript is desirable.
Added 1 hour ago
C
Train Conductor - AB North (TCRC)
CN
Lac la Biche, AB
- Full-time
High School Diploma or General Educational Development (GED)
Added 1 hour ago
A
Senior Full Stack Developer/AI Builder
adidas
Woodbridge, ON
- Full-time
The ideal candidate is an end-to-end engineer who is equally comfortable developing modern user experiences, building Node.js services and APIs, implementing authentication and…
Added 1 hour ago
Manager, Project Execution
Toronto Hydro
Toronto, ON
Certified Engineering Technologist (CET) or Professional Engineer (P.Eng) in the province of Ontario or eligibility to obtain in future.
Added 1 hour ago
A
Platform & Site Reliability Engineer
adidas
Woodbridge, ON
- Full-time
A hands-on platform engineer who combines AWS administration, DevOps automation, Site Reliability Engineering, observability, security, and cloud operations expertise. The candidate should…
Added 1 hour ago
CB
Senior Estimator
Clark Builders
Calgary, AB
- Full-time
…providing Estimating services to aid and support the Project Development, Operations and Estimating departments. The Senior Estimator will be part of the Estimating and Project team…
Added 1 hour ago
J
Civil Engineer - Design and Project Management, Urban Infrastructure, Greater Montreal Area
JobsMedia.io
Montreal, QC
- Full-time
Civil Engineer - Design and Project Management - Urban Infrastructure - Greater Montreal Area
Added 1 hour ago
H
Mechanical Engineer
Hays
Ottawa, ON
- Full-time
The organization offers a collaborative and entrepreneurial culture that supports technical development, mentorship, cross-disciplinary exposure, and long-term career progression.
Added 2 hours ago
FM
Underground Miner / Equipment Operator
Fortis Mining Engineering & Manufacturing
Saskatoon, SK
- Full-time
Innovation– if it doesn’t exist, we will engineer and manufacture it
Added 2 hours ago
A
Product Support Engineer - NAMER
Ashby
Canada
- Full-time
I’m Allie, Head of Support at Ashby. I’m excited to share that we’re hiring a Product Support Engineer in AMER.
Added 2 hours ago
GC
Data Engineer
GEI Consultants, Inc.
Guelph, ON
- $90,000 to $150,000 CAD / year
- Full-time
The Data Engineer is responsible for designing, building, and maintaining the data pipelines and integrations that power GEI’s AI solutions and digital initiatives. This role focuses on…
Added 2 hours ago
OC
Metallurgy Supervisor (Permanent)
Orano Canada
SK · Saskatchewan, Canada
- Internship
Provide input to the annual budgeting process, including identification of infrastructure and training which aligns with group objectives and personal development goals
Added 2 hours ago
WI
Senior Mechanical Engineer (Plant Design)
WSP in Canada
Mississauga, ON
- Full-time
As a Senior Mechanical Engineer within our Mine Process & Mine Infrastructure group, you will shape the systems and infrastructure that power Canada’s most complex industrial and mining…
Added 3 hours ago
W
Principal Mechanical Engineer
Worley
Edmonton, AB · Calgary, AB
- Full-time
The Principal Mechanical Engineer – Static Equipment will lead the static equipment discipline on large, multi-discipline projects and may provide oversight across multiple projects…
Added 3 hours ago
RB
Senior Stormwater Management Engineer
R.J. Burnside & Associates Limited
Collingwood, ON
- Full-time
…sustainable engineering decisions. As a Senior Stormwater Management Engineer, you’ll bring your technical expertise, leadership abilities, and strong analytical mindset to projects that…
Added 3 hours ago
WI
Civil Engineer-in-Training
WSP in Canada
Kamloops, BC
- Full-time
…sanitary sewers, stormwater management facilities, and land development projects. This role offers a balance of technical design and field review responsibilities, providing valuable…
Added 3 hours ago
WI
Project Manager
WSP in Canada
Medicine Hat, AB
- Full-time
Your impact starts here. Based in Medicine Hat, this opportunity sits within WSP’s Municipal Engineering and Land Development Group, where you will play a key role in shaping infrastructure…
Added 3 hours ago
NS
Underground Miner / Equipment Operator
Northern Strands Group of Companies
Saskatoon, SK
- Full-time
Innovation- if it doesn’t exist, we will engineer and manufacture it

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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