Freelancer profile translated to English.
Back to original languageAbout Leonidas
You're piling up SaaS, your teams are copy-pasting between 5 tools, and nobody knows where the right data is?
I build the tool that replaces all of that. Custom business application, AI automation, integration into your existing systems. Fixed price, code delivered, no lock-in.
What my clients have achieved concretely:
Garago (Automotive SaaS): Custom business DMS developed solo. Savings of €2,833/month per client compared to third-party platforms.
Chift (FinTech): Critical API connectors (PayPal, QuickBooks, Teamleader, Axonaut). Unified financial flows for hundreds of companies.
Antipop (Audio): Audio collaboration platform for artists. 12 clients signed from the first demos.
Stack: Next.js, Python, TypeScript, FastAPI, n8n, PostgreSQL. I work with startups, VSEs, and SMEs in Belgium and France.
Have a problem to automate? Describe it in 3 lines, I'll get back to you with an initial analysis.
English
Fluent
French
Native or bilingual
Can work on-site
Bruxelles (up to 50km), Braine-l'Alleud (up to 50km), Anvers (up to 50km), Gand (up to 50km), Lille (up to 15km)
Experience
- iMapperFull Stack DeveloperARCHITECTURE AND URBAN PLANNINGOctober 2025 - Today (8 months)Orsay, FranceStack: Python, Flask, React, JavaScript, PostgreSQL, AWS, WebAssembly, Three.jsIntelligent laser mapping SaaS platform for floor plan creation.
- Frontend migration: transforming legacy code to React with UI redesign
- Backend performance optimization on a legacy Python/Flask codebase
- Development of new features for the point cloud visualization platform
- Code review and pull request validation to improve quality and maintainability
- Improvement of the existing platform's architecture and performance
- AntipopFull-Stack DeveloperSOFTWARE PUBLISHINGAugust 2025 - Today (10 months)Brussels, BelgiumStack: TypeScript, Next.js, NestJS, Node.js, PostgreSQL, StripeAudio collaboration platform for artists and sound engineersSecure sharing of stems with timestamped feedback and real-time collaborationProfessional audio player with A/B testing and version managementSecure architecture with magic links.Rapid market validation: 12 clients signed from the first demos, DJ Tomorrowland interested as an ambassador
- PureriseAIPython/Odoo DeveloperSOFTWARE PUBLISHINGJuly 2025 - September 2025 (2 months)Braine-l'Alleud, BelgiumStack: Odoo, Python, JavaScript, SCSS, PostgreSQL, Stripe, Instagram APIDesign and development of a creative AI SaaS for viral content generationAI Training Module - Free masterclasses to master visual and video creation AI tools with interactive tutorialsInspiration Feature - Viral content inspiration search engine with Instagram API integration and filtering by media typeResources System - Library of automations, viral and creative hooks to optimize content production on Instagram/TikTokAI Assistant Module - AI assistant for generating optimized prompts (Text-to-Image, Image-to-Video, Text-to-Video) with intelligent suggestionsLearning Platform - Learning system with downloadable resources and structured paths for entrepreneursFreemium subscription system with Stripe integration, premium access management, and analytics dashboard for user performance tracking
Recommendations
Be the first to recommend Leonidas
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Web developerBeCode2022Full Stack Dev Web Junior