l
lucaslauer

Lucas L

@lucaslauer

Web Developer, AI Engineer, Automations

Brazil
English, Portuguese
About me
I build AI-powered web products, automation systems, and SaaS interfaces for growth-stage startups and agencies - fast, clean, and production-ready. My stack: React / Next.js, Node.js, n8n automations, Claude/Anthropic API, Supabase, Tailwind CSS, Shopify Liquid, and WordPress. I've shipped AI receptionists, SaaS dashboards, revenue calculators, investor pitch decks, and full landing pages — all live and client-tested. If you need a builder who moves fast and delivers real product, let's talk.... Read more

Skills

l
lucaslauer
Lucas L
Offline • 

See my services

Custom Websites
I will design and build a stunning landing page for your business
From$100 / projectMore details
AI Chatbot Development
I will build an ai chatbot or automation system for your business
From$200 / projectMore details

Portfolio

Work experience

Medusa_Web

Senior Full-Stack Engineer & Automation Lead

Medusa Web • Part-time

Jan 2024 - Present • 2 yrs 5 mos

Led architecture and delivery of a white-label storefront framework in Next.js 14 + TypeScript, deployed on Vercel, serving 12 client brands with shared codebase and per-tenant theming via CSS variables and Tailwind config injection. Built and maintained a REST API layer in Node.js (Express) integrated with Supabase Postgres, handling auth, product catalog sync, and order management; reduced average API response time from 480ms to 95ms through query optimization and edge caching. Designed a no-code automation hub using n8n self-hosted on Railway, orchestrating 30+ active workflows: abandoned cart recovery, Slack alerts, CRM sync (HubSpot webhook → Supabase), and post-purchase email sequences via SendGrid. Integrated the Anthropic Claude API to build an AI-powered product description generator embedded in the client dashboard — takes SKU metadata as input and returns SEO-optimized copy in brand voice via a system-prompt template per client. Developed custom Shopify sections (Liquid + JSON schema) and a headless bridge via Shopify Storefront API consumed by Next.js frontends; enabled non-dev team to manage content blocks without touching code. Authored internal documentation, component library (Storybook), and onboarding runbooks that cut new-developer ramp-up time from 3 weeks to 5 days.

Swell

Frontend Developer & AI Integration Specialist

Swell • Full-time

Feb 2020 - Dec 2023 • 3 yrs 10 mos

Delivered 30+ client projects end-to-end: from Figma handoff to production deploy, using React, Tailwind CSS, and static HTML/CSS for landing pages and marketing sites; consistently hitting Core Web Vitals green thresholds on PageSpeed. Developed a custom WordPress theme from scratch (PHP + ACF + WP REST API) for a real estate client with 200k monthly sessions; built reusable Gutenberg blocks allowing the editorial team full content autonomy. Prototyped and shipped an AI customer support chatbot for a health-tech SaaS client using the Anthropic API — multi-turn conversation with context windowing, escalation logic to human agents via webhook, and a React-based chat UI embedded in their existing Next.js app. Automated the agency's internal reporting pipeline with n8n: pulled data from Google Analytics, Ahrefs, and Facebook Ads APIs, consolidated into weekly Slack digests and auto-generated PowerPoint decks (pptxgenjs) sent to clients every Monday morning. Produced conversion-focused copywriting in English for 3 SaaS clients' landing pages and email sequences, with A/B tested variants; one client saw a 34% uplift in trial sign-up rate over 60 days. Managed technical SEO and social media content strategy for two accounts, including editorial calendar, brief writing, and performance reporting — grew combined organic reach from 8k to 61k followers in 14 months.