Dev Looking For Work

Connect with me

Marlon Steiner

Junior Full Stack Developer

msteiner.sudo@gmail.com
linkedin.com/in/marlon-steiner
github.com/MarlonSteiner
St. Gallen, Switzerland · Available immediately

Profile

Full stack developer with modern web development training and 4+ years of technical experience across mechanical systems, enterprise software and robotics development.

Experience

Freelance Ecommerce Developer

2025 · Entrepreneur, Zurich

Built a jewellery website for Juwelier Mahler on WordPress, responsive across all devices.
Customised themes and applied modern web design principles for a luxury retail presence.
Deployed and hosted on Hostinger, handling domain configuration and ongoing maintenance.
Worked directly with the client to turn business requirements into a working implementation.

Inventory Control Specialist

2024 · Rheinmetall Air Defence AG, Switzerland

Documented and managed enterprise inventory systems in SAP, working with complex database records.
Used Jira and Confluence for tracking and technical documentation.
Collaborated with cross-functional engineering and production teams.

Assistant — Robotics & Software Development

2022–2023 · ETH Zürich Autonomous Systems Lab

Designed UI for computer software in Figma and Qt Creator, alongside software engineers.
Researched and developed UX concepts from ideation to implementation on robotics projects.
Managed procurement of technical components and coordinated with suppliers.
Supported doctoral and master students with PCB soldering, 3D printing, laser cutting and CAD in Fusion 360.

Civil Service — Community Integration

2022–2023 · TISG Refugee Center Rosenau, St. Gallen

Supported Ukrainian refugees with administrative processes, accommodation and integration services.
Organised and taught German language courses.
Managed documentation and database entries in specialised refugee management software.

Polymechanic

2020–2022 · Gietz AG, Switzerland

Precision mechanical assembly for punching and embossing machines.
Electrical cabinet wiring, working from schematics.
Worked with engineering teams to optimise manufacturing processes.
Maintained quality standards and technical documentation.

Skills

Front end: HTML5 & semantic markup, CSS3, Sass/SCSS, JavaScript ES6+, Bootstrap, responsive design, cross-browser compatibility, web performance, accessibility (WCAG)
Back end & data: Ruby on Rails, Python, C, SQL, PostgreSQL, database design, RESTful API integration
Tools & practice: Git, Jira, Confluence, agile methodology, software engineering principles, data structures & algorithms, web hosting & deployment, domain management
Design & other: UX/UI design, Figma, Qt Creator, SAP, WordPress, CAD (Fusion 360), 3D printing, Blender, Unity

Education

Le Wagon Web Development Bootcamp

2025 · Cape Town, South Africa

Full-stack web development with a front-end specialisation.
JavaScript, Ruby on Rails, PostgreSQL, Bootstrap, Flexbox and Grid.
Built “Logs AI”, an audio journal application with speech summarisation.
Deployed with Git and Heroku.

CS50: Introduction to Computer Science

2024–2025 · Harvard University, online

Computer science fundamentals, algorithms and data structures.
C, Python, SQL, JavaScript, HTML/CSS.

Self-directed Computer Science & UX Design study

2023–2025 · Independent, St. Gallen

Computer science fundamentals, UX design principles and modern web technologies.
Google UX Design certification.

Federal Certificate in Polymechanics

2016–2020 · Swiss Vocational Education System

Four-year apprenticeship. Specialised in precision assembly and technical systems.

Certifications

Web Development Certificate — Le Wagon
Swiss Federal Certificate in Polymechanics — Swiss Federal Institute for Vocational Education and Training
UX Design Fundamentals and Process
JavaScript Fundamentals
Responsive Web Design
Learning How to Learn

Languages

English — native
German — native
Tagalog — fluent