Freelancer profile translated to English.
Back to original languageAbout Denis
🛠Web Developer & Integrator since 2014**, I offer over **10 years of experienceto assist you in carrying out your web projects or creating robust, tailor-made API solutions.
Versatile and rigorous, I work at every stage of development, fromintegrating responsive interfacesto deploying complex applications, including back-end architecture and communication between services via high-performance APIs.
🎯My goal:to transform your ideas into concrete, efficient, and scalable solutions, while respecting your technical constraints and deadlines.
🧰My services:
🔹Responsive integration:websites & marketing emails, pixel-perfect design, mobile-first
🔹Fullstack Development:complete project, from database to user interface
🔹Front-end:modern and dynamic interfaces
🔹Back-end:business logic, security, performance
🔹APIs:creation & integration (REST, third-party services, application interconnection)
💬Available to discussyour needs, answer your questions, or talk about your upcoming projects.
👉Don't hesitate to contact me!
See you soon,
Denis
French
Native or bilingual
English
Fluent
Serbian
Native or bilingual
Can work on-site
Combs-la-Ville (up to 50km)
Experience
- AGENCIMMO.COMTechnical Manager and JS & Hubspot Fullstack DeveloperREAL ESTATEJanuary 2022 - Today (4 years and 7 months)💼 Development and Integration – Agence.immo🔹 Design and launch of the agence.immo website and blog🔸 Next.js, React.js, Node.js, HTML5, CSS3, Styled Components, Strapi, GraphQL, PriceHubble, Rest API, Google Tag Manager, PDF generation, HubSpot CRM API, Vercel, Digital Ocean, GitHub, Google Maps API, Mapbox API💼 Development and Integration – Solution.immo🔹 Complete development and integration of the solution.immo website and blog🔸 HubSpot CRM, HubSpot CLI, HubL, HTML5, CSS3, JavaScript, jQuery, JSON💼 Development and Integration – Ambassadeur.immo🔹 Creation of the ambassadeur.immo presentation page🔸 Next.js, React.js, HTML5, CSS3
- HellioHubspot Fullstack DeveloperCIVIL ENGINEERINGDecember 2021 - September 2025 (3 years and 8 months)Paris, France🔹 Development of customizable “Drag & Drop” themes & modules🔸 HubSpot CRM, HubSpot CLI, HubL, HTML5, CSS3, JavaScript, jQuery, JSON🔹 Development of an interactive solar panel configurator🔸 HubSpot, HubL, HTML5, CSS3, JavaScript, REST API🔹 Creation of a custom quote template🔸 HubSpot, HubL, HTML5, CSS3, JavaScript🔹 Integration of Google Maps API for address autocompletion🔸 HubSpot, HubL, HTML5, CSS3, JavaScript, jQuery, JSON, Google Maps API🔹 Implementation of Google Tag Manager for form tracking🔸 JavaScript, jQuery, JSON, Google Tag Manager
- microDONNode.js / HubSpot Fullstack DeveloperDIGITAL AND ITMarch 2025 - May 2025 (2 months)🔹 Development of a Sellsy to HubSpot import script🔸 Data import: contacts, companies, opportunities, comments, tasks, and custom fields, respecting CRM relationships (contacts ↔ deals ↔ companies ↔ tasks/comments)🔸 Node.js, Sellsy API, HubSpot API
Reviews
J
Jeremy
Agencimmo Wallet
Reviewed on 7/9/2025
Top-notch as usual!
Alexis
Bodyexpert.online
Reviewed on 1/18/2022
For Denis, impossible is not a viable reality but a challenge! This consultant is omniscient. He helps find solutions and proposals for the objectives set. We are happy to have used his flawless skills. Excellent Zapier integration, finely and perfectly programmed Hubspot algorithms. His support and best practices saved us a lot of time. Choosing Denis is a guarantee of optimized integration and the provision of effective and relevant solutions. Sincerely. Alexis Vezia.
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Education
- Baccalaureate - Science and Technology of Industry and Sustainable Development (STI2D), SIN optionLycée Louis Aramnd2013
- Higher Technician Certificate (BTS) - Computer Services for Organizations (SIO), SLAM optionEcole Nationale de Commerce2015- Algorithme appliquée - Conception / Maintenance de solutions informatiques - Production et fourniture de services informatiques - 3 mois de stage sur les 2 années
Certifications
- HubSpot CMS for DevelopersHubSpot2021
