Senior .NET / Full Stack Developer

XTM International; Montreal; Hybride; CAD 90 000 - 130 000; Plein temps

Résumé du poste

XTM International in Montréal is seeking a Senior Full Stack Developer who builds AI-first software for our translation platform. You will design and ship end-to-end features across .NET backend and Angular/React frontend, and drive AI-driven development practices across the team.

You'll lead AI initiatives, mentor peers, and collaborate on architecture decisions while ensuring robust data security and production quality.

Qualifications

• 5+ years of full-stack development experience with C#, .NET Core, and Web API.
• Front-end experience with Angular, React, or TypeScript.
• Experience using AI-first development tools (Claude Code, Claude, Cursor).
• Knowledge of MCP or other AI tool integrations and data security considerations.

Responsabilités

• Build and maintain full-stack features end-to-end: C#/.NET Core APIs and modern frontends.
• Use AI-driven development workflows daily to design, implement, test, and review software.
• Apply and evolve the AI-DLC across the team with guardrails and playbooks.
• Design and implement automation to improve productivity and quality.
• Contribute to MCP server setups that connect AI tools to internal systems.
• Help define data security practices when interfacing with external AI services.
• Share knowledge through code reviews, pairing, and internal training.

Connaissances

C#/.NET Core

Frontend frameworks (Angular/React/TS)

AI-first development

SQL Server

English & French proficiency

Outils

Claude Code

Claude

Cursor

MCP

Azure DevOps

AWS

SQL Server

Description du poste

At XTM Group, we build technology that helps enterprises connect with global audiences faster and more efficiently. Our Translation Management platform enables organizations to automate and streamline every stage of the localization process.

We believe innovation happens when talented people collaborate, experiment, and continuously learn. That's why we foster an inclusive, solution-oriented culture where curiosity, teamwork, and ownership are valued every day. Our mission is to become the leading enterprise Translation Management System - and we’re looking for people who want to help shape the future of global communication technology.

About Flowfit by XTM Flowfit is a high-quality linguistic project management platform built for translation companies and language service providers. Developed by Consoltec, now part of XTM International Group, a global leader in language technology, Flowfit helps enterprise localization teams simplify and scale their operations. Our Montréal engineering team works in an Agile, collaborative environment, building modern, scalable software at the intersection of AI, cloud, and business intelligence.

The Role

Hybrid (3 days onsite / 2 days remote)

We are looking for a Senior Full Stack Developer who works AI-first: someone who uses AI tools and AI-driven development methods as a natural part of how they build software, and who helps the whole team do the same. You will design and ship full-stack features across our .NET backend and modern frontend, and drive the adoption of AI-driven development practices (including AI-DLC) across the engineering team.

This is a hands-on engineering role, not a people-management role. You will lead AI initiatives and automation projects, and act as a technical reference and multiplier for the team. This is not a data science position: we are looking for engineers who build production software with AI.

Key Responsibilities

• Build and maintain full-stack features end-to-end: C#/.NET Core APIs and modern frontend applications (Angular, React, or TypeScript-based stacks)
• Use AI-driven development workflows daily (Claude Code, Claude, Cursor, and similar tools) to design, implement, test, and review software, and define how the team applies them
• Apply and evolve the AI-DLC (AI-Driven Development Lifecycle) across the team: practices, guardrails, standards, and reusable playbooks
• Design and implement automation initiatives that improve team productivity and product quality
• Contribute to MCP (Model Context Protocol) server setups that connect AI tools to internal systems
• Help define data security practices for information shared with external AI services
• Contribute to architecture decisions and share knowledge through code reviews, pairing, and internal training

What You Bring

• 5+ years of full-stack development experience, with strong C#, .NET Core, and Web API skills
• Solid frontend experience with Angular (preferred), React, or TypeScript
• Demonstrated, day-to-day experience working AI-first with Claude Code, Claude, Cursor, or similar tools, not just occasionally
• Hands-on experience with AI-driven development methods (AI-DLC or equivalent), and a clear point of view on where AI helps and where it needs human control
• Experience with MCP or other ways of connecting AI tools to systems is an asset
• Good judgment on AI data security and responsible use of AI tools
• Experience with SQL Server and with Azure or AWS
• Ability to share knowledge and coach peers on AI-assisted workflows
• Professional working proficiency in English and French

Tech Stack Backend: C#, .NET, .NET Core, Web API, REST, Entity Framework

Frontend: Angular, React, TypeScript AI Tools: Claude Code, Claude, Cursor, MCP Cloud & Data: Azure (Azure DevOps), AWS, SQL Server

Why You’ll Enjoy Working Here

At XTM, we want people to do meaningful work, grow their careers, and have the freedom to innovate. Here’s what you can expect:

• Make a real impact - contribute to meaningful business outcomes, solve challenges, and help shape the future of our products and services.
• Innovate with AI and technology - explore new ideas, use modern tools, and find smarter ways to work, build, and solve problems.
• Grow your career globally - develop your skills, learn from experienced colleagues, and explore opportunities across our international teams.
• Collaborate across disciplines - work with talented people from different backgrounds and areas of expertise to turn ideas into practical solutions.
• Keep learning and evolving - stay curious, explore emerging trends, and develop your expertise in a culture that values continuous improvement.
• Enjoy competitive rewards and benefits - access compensation and benefits designed to support your professional growth and personal wellbeing.

Benefits may vary depending on location and employment type. Your Talent Partner will share additional details during the hiring process.

Inclusion at XTM

At XTM Group, we believe diverse perspectives create stronger ideas, better products, and more meaningful experiences. We’re committed to building a workplace where everyone feels respected, supported, and empowered to succeed.

If you require accommodations during any stage of the recruitment process, we encourage you to let us know - we’re happy to support you.

What to Expect from the Hiring Process

We aim to create a hiring experience that is transparent, engaging, and respectful of your time.

Application Review

Our Talent Acquisition team will review your application and experience carefully.

Introductory Conversation

If your profile aligns with the role, you’ll meet with a Talent Partner to discuss your background, career goals, and the opportunity in more detail.

Skills & Team Conversations

You’ll connect with hiring managers and cross-functional stakeholders to discuss your experience, skills, problem-solving approach, and how you can contribute to the team and the wider business.

Final Discussions

Depending on the process, there may be a final conversation focused on strategic thinking, collaboration, and long-term growth potential.

Offer & Onboarding

Successful candidates will receive a tailored offer and onboarding support to help them succeed from day one.

Recruitment Notice

Please be aware of fraudulent recruitment activity. Official communications from XTM will only come from email domains ending in:

• @xtm-intl.com
• @xtm.ai
• @xtm.cloud
• @transifex.com