# M3L Software > Senior-level software development for startups and growing businesses. 9 years of experience in Python, FastAPI, React, Stripe integration, and AI solutions. M3L Software is an independent development studio founded by Maciej Marzeta, specializing in building production-ready applications for startups, SaaS companies, and e-commerce platforms. We offer launch pricing for early clients and focus on delivering senior-level code quality. ## Core Services - [Custom Software Development](https://m3lsoftware.com/pricing): Full-stack development with Python/FastAPI backends, React frontends, and PostgreSQL databases - [MVP Development](https://m3lsoftware.com/solutions/startups): Launch your startup MVP in 4-8 weeks with launch pricing - [SaaS Development](https://m3lsoftware.com/solutions/saas-companies): Build scalable SaaS platforms with subscription billing and multi-tenancy - [AI Integration](https://m3lsoftware.com/solutions/ai-startups): Integrate OpenAI, Claude, and custom AI models into your applications - [Payment Integration](https://m3lsoftware.com/examples/payment-integration): Stripe subscriptions, usage-based billing, and marketplace payments ## About - [About M3L Software](https://m3lsoftware.com/about): Our story, experience, and approach - [Portfolio](https://m3lsoftware.com/portfolio): Past projects and case studies - [Pricing](https://m3lsoftware.com/pricing): Transparent pricing — projects from $1,500 - [Contact](https://m3lsoftware.com/contact): Get in touch for a free consultation ## Industry Solutions - [Startups](https://m3lsoftware.com/solutions/startups): MVP development with launch pricing - [SaaS Companies](https://m3lsoftware.com/solutions/saas-companies): Scalable SaaS platform development - [E-Commerce](https://m3lsoftware.com/solutions/e-commerce): Custom e-commerce and marketplace solutions - [AI Startups](https://m3lsoftware.com/solutions/ai-startups): AI/ML product development and integration ## Technical Knowledge Base - [Glossary](https://m3lsoftware.com/glossary): 40+ software development terms explained - [Technology Comparisons](https://m3lsoftware.com/compare): Head-to-head technology comparisons (FastAPI vs Django, React vs Vue, etc.) - [Project Examples](https://m3lsoftware.com/examples): Detailed project architecture examples - [Tools Directory](https://m3lsoftware.com/tools): Curated tools and frameworks we use ## Technology Stack Primary: Python, FastAPI, Django, React, TypeScript, PostgreSQL, Redis, Docker, AWS Payments: Stripe (subscriptions, Connect, invoicing, usage-based billing) AI/ML: OpenAI API, Claude API, custom model integration Frontend: React, Vue.js, Tailwind CSS, shadcn/ui Infrastructure: Docker, Kubernetes, AWS, Vercel, CI/CD pipelines ## Projects - [GoOffline](https://gooffline.me): High-performance full-stack web platform converting Spotify playlists into vinyl and CD shopping lists — self-hosted FastAPI backend, Cloudflare edge network, modern React/TypeScript/Vite frontend, real-time multi-API orchestration, and 50+ pages of SEO content across 4 languages - [Law Office Marzena Litewka-Marzęta](https://www.marzena-litewka.pl): End-to-end IT solutions for a law firm — website, domains, SSL certificates, encrypted email, cloud storage, and AI integrations ## Contact - Website: https://m3lsoftware.com - Email: contact@m3lsoftware.com - LinkedIn: https://www.linkedin.com/company/m3lsoftware - GitHub: https://github.com/mMarzeta - Blog: https://blog.marzeta.pl