Available for selected freelance missions
Guillaume LemoineFreelance full stack developer.
I build clean web products, business tools, and automation workflows. I help companies turn ideas into reliable, maintainable software, from first scope to production delivery.
- Freelance missions
- Recruiter-ready profile
- Remote work
- Fluent English
Freelance services
Product-minded development for real business needs.
I do not just execute tickets blindly. I listen, challenge assumptions when needed, and help choose the technical path that fits the budget, timeline, team, and future maintenance.
Business websites
Professional websites, landing pages, responsive interfaces, and SEO-ready online presence.
Web products / SaaS
MVPs, dashboards, web platforms, internal products, and user-facing applications.
AI and automation
AI integrations, workflow automation, repetitive task reduction, and smarter business tools.
SEO and performance
Technical SEO, metadata, semantic structure, page speed, accessibility, and content structure.
Existing product improvement
Updates, refactoring, UX improvements, technical cleanup, and performance fixes.
Technical guidance
Technology choices, scope, hosting, architecture, and maintainable delivery decisions.
Skills
Full-stack skills with clear strengths and honest range.
The strongest day-to-day stack comes first. Additional experience is separated so the profile stays accurate.
Frontend
Projects
Public work and private product experience.
A small, focused project selection. The private product is described only at a safe high level.
Public website / product landing page
DBD OverlayTools Website
A professional website for the DBD OverlayTools ecosystem, presenting a streaming overlay suite built for Dead by Daylight content creators with product positioning, frontend work, SEO/performance considerations, and purchase/download flows.
Private desktop application / product
DBD OverlayTools App
A production desktop application for Dead by Daylight streamers, designed around real-time OBS overlays, customizable themes, timers, streak tracking, tournament tools, and OCR-based map detection.
Approach
Clear technical decisions, not just code.
I can work with technical teams or non-technical clients. The goal is always the same: understand the real constraint, explain tradeoffs clearly, and deliver software people can maintain.
Rational technical choices
Architecture and stack decisions are based on constraints, budget, timeline, maintainability, and business value.
Clear communication
I explain decisions without unnecessary complexity, whether the audience is technical or not.
Product and UX awareness
Features are shaped around user flow, clarity, accessibility, and the expected business result.
AI-assisted, human-led
AI helps accelerate testing, exploration, and automation, but judgment, UX quality, and delivery remain human-led.
Remote-ready from Montpellier
Based in Montpellier, fluent in English, and able to work remotely with clients and teams in many contexts.
Freelance reinforcement
I can support teams that need temporary development capacity, backup, or a focused delivery push.
Career path
A concise timeline of development experience.
Full Stack Developer with a Bachelor’s degree in Artificial Intelligence and Data Science, around two years of professional application development experience, and experience across the software lifecycle in Agile/Scrum environments.
OverlayTools App — Entrepreneur
Remote
- Built a production Electron + Vue 3 desktop app for streamers.
- Delivered real-time OBS overlays, themes, timers, streak tracking, tournament tools, and OCR-based map detection.
- Handled premium access and Electron production readiness at a high level without exposing private implementation details.
Full Stack Developer — Work-study contract
BEEMO TECHNOLOGIE, Perols, France
- Developed web applications using JavaScript, HTML, CSS, and PHP.
- Built a Go API to manage HTTPS certificate status of Beemo machines.
- Worked in an Agile/Scrum environment.
Full Stack Developer — Work-study contract
SLB, Montpellier, France
- Learned and used Angular in a team context.
- Developed a data visualization system.
- Helped make project data easier to consult.
Mobile Developer — Internship
Solem, Clapiers, France
- Worked with Swift and SwiftUI.
- Prototyped the Solem Apple Watch application.
Freelance request
Tell me what you need to build or improve.
You can request a short mission, a complete product, an MVP, a business tool, AI/workflow automation, SEO/performance help, or temporary reinforcement for a development team.
What I take care of
- Understanding the need, users, and expected result.
- Defining the right scope and avoiding unnecessary complexity.
- UX/UI structure, user flow, and technical choices.
- Frontend/backend development according to the project.
- AI integrations or automations when they bring real value.
- Deployment, documentation, and clean handoff.
- Technical SEO basics: structure, metadata, performance.
- Clear communication during the mission.