// MBA · AI · FullStack · +15 yrs
Francisco Llantada
Robust systems that adapt when everything else changes.
I build production systems with clean domain boundaries and abstract integrations. From DDD backend refactors to AI multi-agent orchestration — always shipping real code.
Sr. FullStack Developer at Nieve Consulting Services.
Engineering principles
Keep it simple
If a solution is hard to explain, it's probably wrong. Simple systems are easier to debug, scale, and hand over.
Single responsibility
Each piece of the system does one thing well. When something needs to change, you know exactly where to go — and nothing else breaks.
Clear boundaries
Each area of the business owns its own code and rules. Orders, payments, and shipping each evolve at their own pace — independently, without breaking each other.
Organized by purpose
Code is grouped by the problem it solves, not by its technical role. Everything a feature needs lives together — so changes are local and deployments are safe.
Independence over reuse
Reusing code sounds efficient, but it creates hidden connections. I prefer independent pieces that can evolve separately — even if they look similar at first.
Self-documented code
Every public function has JSDoc. Every decision has a rationale. The codebase explains itself — so the next developer doesn't have to guess.
What I build
AI systems
Multi-agent orchestration with LangGraph, workflow automation, intelligent assistants. Real code, fully documented, ready to integrate. No dependencies on no-code platforms.
Backend architecture
GraphQL, PostgreSQL, MongoDB, Node.js. Domain-Driven Design with clean layer separation. From schema design to production-grade APIs.
Cloud infrastructure
AWS Lambda, Step Functions, serverless architectures. System design for scaling: more users, more team, more features — without rewriting everything.
Web & mobile
Next.js, React, React Native. Performant interfaces, real-time dashboards, mobile apps for Android and iOS.
Integrations
Stripe, Chargebee, WhatsApp Business API, Intercom, OneSignal. I create the interfaces, implement the service, verify compatibility — so you leverage proven work without coupling.
AI-assisted development
Claude Code workflows, custom agents and hooks, prompt engineering for production. I build the tooling that makes AI-assisted development actually work at scale.
Experience
Augment Eco
via Nieve Consulting
Sr. FullStack Developer
Jul 2024 – Present
Node.js, TypeScript, PostgreSQL, GraphQL, AWS, Next.js, Chargebee, Intercom, OneSignal
- Led full backend redesign using Domain-Driven Design — migrated 40+ device operations to clean architecture
- Built unified Communication API integrating Intercom and OneSignal
- Integrated Chargebee Payment Components for subscription and billing management
International Logistics Company
via Nieve Consulting · Singapore
Sr. Frontend Developer
Mar 2024 – Jul 2024
Node.js, Next.js, TypeScript, Tailwind, shadcn/ui, Zustand, ECharts
- Built a real-time analytics dashboard with live vessel tracking maps and custom charting for shipping operations
- Led frontend architecture with Next.js SSR, complex UI components, and Zustand state management
- Designed custom data visualizations with ECharts — tailored charts for route analysis, port throughput, and fleet performance
Cliencer
Personal project
Solo founder & developer
May 2025 – Present
Node.js, Next.js, TypeScript, LangGraph, MongoDB, Cloudflare, Stripe
- Full SaaS from scratch: AI multi-agent system with LangGraph supervisor pattern
- AI image generation pipeline with Google Gemini
- WhatsApp Business API chatbot with optimized latency (6s → 2.5s)
- Complete payment and subscription system with Stripe
Harbiz
Spain
Sr. FullStack Developer
Nov 2023 – Mar 2024
Node.js, TypeScript, React Native, MongoDB, Express
- Reduced loading and execution times by 95% through architecture refactoring
- Decreased bugs by 80% leading to a significantly more stable app
- Conducted training sessions on Domain-Driven Design applied to frontend
Naranja X
Argentina
Sr. Backend Developer
Dec 2022 – Nov 2023
Node.js, AWS Lambda, Step Functions, TypeScript, Serverless
- Developed and refined Serverless templates for backend development across the company
- Led cross-company software catalog projects
- Delivered workshops on best practices in Serverless architecture
Dar+ Salud
Argentina
FullStack Developer
Sep 2017 – Dec 2022
Next.js, MongoDB, Node.js, React, Zustand, Docker, TypeScript
- Designed and implemented scalable solutions supporting 5 years of company growth
- Developed and launched multiple full-stack projects from inception to production
- Mentored team members on engineering practices and reporting
+ 10 years of prior experience in software development and electronics engineering
Education
Master of Business Administration (MBA)
Universidad Torcuato Di Tella — Buenos Aires
Tutor for Business Plan course · Guest lecturer for Commercial and Competitive Strategies (2018–2022)
Electronics and Communications Engineer
Universidad Católica Argentina (UCA)
Complementary training
Featured
From the blog
Community-Trained Agent
Learning from a 20k-star repo instead of official docs. How a community-trained agent found 25 issues in my production setup.
Claude Code at Scale
Context architecture for large codebases. A hierarchical documentation system that keeps AI agents productive.
Open source
Let's connect
Backend architecture, AI integration, full-stack development.