--- title: "Mathieu Haye · Freelance CRM, AI & Automation · Custom software shipped in weeks" url: https://mathieuhaye.fr/en/ language: en alternate: https://mathieuhaye.fr/ description: "Custom software that simplifies your teams' work: CRM, automations, AI agents and business applications for SMEs, shipped in weeks. One point of contact. Paris, FR/EN." --- # The custom software your SaaS stack doesn't cover. Shipped in weeks. > Custom software that simplifies your teams' work: CRM, automations, AI agents and business applications designed around your processes. One point of contact, from scoping to production. Freelance · Paris · FR / EN. **Mathieu Haye is a French freelance developer specialised in AI and automation, based in Île-de-France. He helps SMEs, scale-ups and B2B clients remove the manual work that slows their growth: custom CRM platforms, AI agents, automations and business applications built around each client's processes, not a SaaS vendor's. The third way between no-code-only and agencies: one point of contact from scoping to production, using modern tools to ship in weeks with no compromise on code quality.** **10+** projects shipped · **4** active clients · MVP in **4–6 weeks**. They trust me: e-Enfance / 3018, Fromagerie Ermitage, Horus Condition Report, Profile Club, Callkom. ## What I build for you (5 services) - **[AI agent developer](https://mathieuhaye.fr/en/ai-agent-developer)**: an agent that answers your customers, qualifies leads or handles tickets around the clock. Connected to your tools, in production in weeks. - **[n8n automation](https://mathieuhaye.fr/en/n8n-automation)**: I connect your tools and remove repetitive manual tasks. Robust n8n workflows (up to 90+ nodes), tested and monitored. - **[Custom CRM](https://mathieuhaye.fr/en/custom-crm)**: a CRM that fits your team instead of forcing it into a template. A sovereign custom build, hosted where your data belongs. - **[Custom web app & MVP](https://mathieuhaye.fr/en/custom-web-app)**: your product idea shipped as a production web app in 4 to 6 weeks: users, payments, AI if needed. You own the code. - **[AI agent for SMEs](https://mathieuhaye.fr/en/ai-agent-for-smes)**: AI made concrete for a small business: one first profitable use case, scoped in 30 min, no jargon and no endless project. Not sure which format fits? 30 minutes, free, and you'll know whether and how I can ship it, and by when: [book a call](https://calendly.com/mathieu-haye/30min). ## The third way between an agency and no-code Why one well-equipped consultant ships in weeks what used to take a team of four: | | No-code only | Agency | Mathieu (augmented solo) | |---|---|---|---| | MVP timeline | 4-12 wks | 4-6 months | **1-6 wks** | | Typical cost | €0-5k | €50-150k | **€1-12k** | | Point of contact | Yourself | 4+ people | **1** | | When something breaks | You're on your own | Support ticket | **Direct support** | End to end: spec → production. Package details: [collaboration](https://mathieuhaye.fr/en/collaboration). ## Three ways to work together From a one-week sprint to a full build. Budget depends on your project; we scope it together in a free 30-min call. - **1-week Sprint** — from €2,500: one n8n workflow, one AI agent, one CRM integration. Scoped, shipped, deployed in 5 days. - **MVP 4 to 6 weeks** — priced on quote (most requested): full web app: users, payments, AI agent. Deployed to production. - **Monthly retainer** — priced on quote: ongoing presence on an existing product: features, maintenance, support. Details: https://mathieuhaye.fr/en/collaboration · Book a call: https://calendly.com/mathieu-haye/30min ## Proof: flagship projects - **e-Enfance / 3018 — Emma, custom CRM**: worked on their market CRM first, then designed and shipped Emma, the custom CRM that replaced it: the 3018 helpline operators' workstation, one unified queue across channels (chat, phone, e-mail, WhatsApp, Messenger), automatic distress-signal detection with suicide-risk prioritisation, realtime supervision. Sovereign build, hosted in France, on sensitive data. - **IA Brew, AI newsletter**: fully automated weekly newsletter: 20+ source ingest, AI scoring & summaries, HTML rendering, Brevo delivery. Runs alone, no human in the loop. - **Job scorer + ATS CV/cover-letter PDF generator**: aggregates WTTJ, JobTeaser and LinkedIn via APIs, weighted scoring, auto-generates ATS-ready CVs and cover letters in PDF tailored to each offer. - **Juice Jacking Guard, USB monitoring (Windows)**: desktop app that intercepts USB devices before they can talk to the OS. Blocks BadUSB, Rubber Ducky, O.MG cables, juice jacking. Python, ~4,900 lines. All projects: https://mathieuhaye.fr/en/projects ## Two free diagnostics - **Is your site visible to AI?** ChatGPT, Perplexity, Google AI: a score out of 100, a clear verdict, and the time it takes to fix. 30 seconds. → https://mathieuhaye.fr/en/ai-visibility - **What is your AI maturity level?** 6 or 20 questions, your level, your priority levers and the time you could save with AI and automation. → https://mathieuhaye.fr/en/ai-maturity Free · No signup · Instant result. And an AI agent trained on my profile answers live: https://mathieuhaye.fr/en/#agent ## About I build with AI as a daily reflex: agentic workflows, LLM scoring pipelines, AI automations, decision dashboards, CRM and sales orchestration. Multi-client freelance practice, four active engagements, hands-on with Claude API, n8n (93+ nodes), Brevo, HubSpot, Pipedrive. I ship tools that move business KPIs, not slides. Bilingual French / English. Bloomberg BMC certified. ## Contact - **Book a call (30 min, free)**: https://calendly.com/mathieu-haye/30min - E-mail (best for a detailed brief): contact@mathieuhaye.fr — reply within 24h, Mon–Fri - LinkedIn: https://www.linkedin.com/in/mathieu-haye/ · Malt: https://www.malt.fr/profile/mathieuhaye - Phone (best for a quick call): +33 6 61 51 32 89 - Journal: https://mathieuhaye.fr/blog/en/ · Version française : https://mathieuhaye.fr/ · AI guide: https://mathieuhaye.fr/llms.txt