About this role
Senior Full-Stack Software Developer Luxembourg, Luxembourg Trending Job Description About ArcelorMittal Global Solutions AI Team The ArcelorMittal Global Solutions AI Team is a transversal Artificial Intelligence capability enabling business divisions to create measurable value through responsible, production-grade AI and data solutions. We support the full lifecycle of AI initiatives across Finance, HR, Supply Chain, Logistics, Manufacturing, and Operations, while owning technical delivery, quality, and risk controls. Our portfolio includes document automation, forecasting, optimization, computer vision, predictive maintenance, AI-powered assistants, and GenAI-driven enterprise applications. Role Summary As a Senior Full-Stack Software Developer, you will play a dual role combining hands-on software engineering with technical leadership. In the initial phase, you will design and build cloud-based backend and frontend software solutions yourself. As the team grows, you will progressively lead and mentor other developers, oversee development activities, and ensure high standards of engineering quality across the team. This role is critical to establishing robust software foundations, scalable architectures, and strong development practices within the AMGS AI Team. Key Responsibilities Hands-on Engineering (Initial Phase) Design and implement cloud-native software solutions supporting AI and data use cases Develop backend services, APIs, and frontend application components Ensure solutions are secure, scalable, maintainable, and production-ready Collaborate closely with AI, data, and cloud engineers during delivery Technical Leadership (As Team Grows) Lead and guide software developers in solution design and implementation Review code and provide constructive feedback Define and enforce development standards, best practices, and coding guidelines Oversee technical quality, maintainability, and reliability of delivered software Support planning, estimation, and technical decision-making Cross-Functional Collaboration Work closely with business analysts, product owners, and architects Translate solution requirements into sound technical designs Ensure alignment between software design and cloud / AI platform constraints Required Skills & Experience Core Technical Skills Strong experience in full-stack software development (backend and frontend), preferably in cloud-based environments Solid programming skills across backend and frontend technologies (e.g. Python, JavaScript/TypeScript) Experience designing and building APIs and backend services Good understanding of cloud-native architectures and deployment models Experience with version control, testing, and CI/CD practices Leadership & Ownership Ability to work independently and own solutions end-to-end Experience mentoring or guiding other developers (formal or informal) Strong sense of accountability for code quality and delivery outcomes Comfortable making technical decisions and trade-offs Professional Experience Proven experience as a software developer in production environments Experience working in cross-functional teams Exposure to enterprise or complex system landscapes Nice to Have Experience building software that supports AI or data platforms Familiarity with cloud platforms (e.g. Azure, AWS) Experience introducing or improving engineering standards Exposure to agile delivery frameworks What We Look For in This Role A strong hands-on engineer who enjoys building real systems A future technical leader who wants to grow a high-quality development team Someone who balances pragmatism with long-term maintainability A collaborator who can bridge technical and non-technical stakeholders What This Role Is Not A purely managerial or people-only role A hands-off architect position A short-term individual contributor without leadership ambition If you enjoy building end-to-end cloud-based software (backend and frontend) from the ground up, shaping engineering practices, and gradually leading a growing team, this role offers a unique opportunity to have real impact within AMGS AI. About Us