Freelancer profile translated to English.
Back to original languageAbout Nicolas
I support SMEs/mid-sized companies in B2B on the creation and evolution of their web applications (SaaS, extranet, client portal): adding features, taking over existing code, stabilization, and long-term maintenance.
My goal is simple: to help you deliver faster, with more serenity and business visibility. Specifically, I secure the existing codebase, make the app's operation "controllable," and then we establish an efficient delivery rhythm (clear priorities, small iterations, controlled deployments).
I primarily work with Laravel/Livewire/Filament (APIs, back-office, modern front-end) as well as Vue.js, and I also focus on delivery quality: useful technical debt to repay, performance, reliability, and collaboration organization.
What my clients look for:
- Application takeover (when the previous provider leaves or the team changes)
- Accelerating delivery without sacrificing quality
- Setting up reliable maintenance (evolutions + bug fixes + support, over time)
Collaboration style: simple communication, closeness, regular check-ins, and transparency on progress.
If you have an existing product to evolve or an application project to launch, I can help you secure the start and quickly deliver value.
Spanish
Native or bilingual
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- Nicolas Del CastilloFreelance DeveloperDIGITAL AND ITMay 2026 - Today (3 months)Paris, FranceI transform your business processes into custom applications quickly, without unnecessary complexity.Freelance developer with 20 years of experience, I design custom internal tools and web applications for French SMEs that are tired of generic software that never truly matches their way of working.What I do specifically:→ Custom business applications (management, tracking, automation)→ Integrations and connectors between your existing tools→ Redesign and migration of legacy applications→ Maintenance and evolution of your web projects (TMA)
- Outlined SASGeneral ManagerCONSULTING AND AUDITSJune 2021 - May 2026 (4 years and 11 months)Paris, FranceFounder of Outlined (SAS), I support B2B SMEs/mid-sized companies in taking over, modernizing, and evolving web applications (SaaS, extranets, client portals). I handle everything from scoping, prioritization, development, stabilization, and deployment. I structure collaboration (weekly meetings, dedicated channel) and clear maintenance (backlog, SLA, rituals) to ensure continuity, reduce technical debt that truly hinders progress, and accelerate time-to-market with regular, predictable deliveries.
- Syntesy Digital SLCo-founderSOFTWARE PUBLISHINGJune 2017 - April 2021 (3 years and 10 months)Barcelone, SpainAt Syntesy Digital SL, we developed a powerful CMS dedicated to online insurance and brokerage. I contributed to the design and development of core features (content management, workflows, integrations), ensuring performance, reliability, and maintainability for a high-stakes B2B product.
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Education
- BTS (Associate's Degree) in Management Information Technology, Application Developer option.Paris 12th2007
Certifications
- Scrum MasterAgiliste2022