Yocemar
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YocemarDanilo Melo

  • Electronic Engineer
  • Full Stack / Backend Developer
  • AI / LLM Integration

Electronic engineer building backend systems and production AI agents. Developer of NovaWMS.

Years of experience
15+
Projects
9
Skills
58
Ask something about Yocemar’s profile…NowNovaWMSFull Stack DeveloperNovaWMSMulti-tenant warehouse management SaaS: NestJS API, Next.js frontend and PostgreSQL, with five AI agents on a multi-provider LLM gateway (Claude, MiniMax), OCR of documents and photos, and API integrations with clients' external services.Projects →AgentViewGET /llms.txt200 · text/markdownNestJSNext.jsPostgreSQLClaudeMiniMax
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About

Electronic Engineer and software developer with 15+ years in tech, 5+ years focused on backend and full stack development, and recent hands-on experience designing production AI agent architectures. Lead developer of NovaWMS, a multi-tenant warehouse management SaaS built around a 5-agent AI architecture, with documentation designed for external AI agents (llms.txt).

Experience

Full Stack DeveloperNovaWMS2025 – PresentNovaWMS (novawms.co) is a multi-tenant warehouse management SaaS built end to end: NestJS 11 API, Next.js 15 frontend, PostgreSQL with Drizzle ORM, five AI agents on a multi-provider LLM gateway (Claude, MiniMax), OCR of documents and photos, and API integrations with clients' external services.

Remote

  • Architected a 5-agent AI system on one shared chat engine and LLM gateway: execution agent, analysis agent with per-company persistent memory, photo-vision-guided operator agent, client-facing agent, WhatsApp agent
  • Built an insights engine with 8 deterministic SQL detectors for historical data analysis and AI-generated suggestions
  • Implemented a multi-provider LLM gateway (Claude, MiniMax and OpenAI-compatible providers), configurable per company and per agent
  • Built OCR pipelines that read documents and photos into structured warehouse data, and API integrations with clients' external services (ERPs, carriers, messaging)
  • Made product documentation discoverable and consumable by external AI agents (llms.txt, well-known endpoints, agent discovery)
  • Built DocTrans: AI-driven image/document processing automation for a logistics company

Technologies: NestJS, Next.js, PostgreSQL, Claude, MiniMax, OCR, Drizzle ORM, TypeScript, n8n, REST APIs, AWS S3

Software DeveloperPRVIDRApr 2022 – Sep 2026Backend developer on a large-scale telco/MVNO subscription and billing (BSS) platform: millions of end customers and millions of transactions per month for operators such as Optus.

Remote for Australia: from Brisbane (2022 – 2025), from Colombia (2025 – Sep 2026)

  • Developed backend modules in PHP, ColdFusion, JavaScript and Python for a subscription/billing BSS platform serving telecom operators and MVNOs (Optus, OneNZ, Yojomo, Moose Mobile; Twilio integration)
  • Supported and extended large-scale platforms serving millions of end customers and processing millions of transactions per month
  • Ran payment and billing operations: invoice generation, scheduled payments, payment corrections and investigation of failed or incorrect charges
  • Integrated payments through APIs, including Stripe, Apple Pay and Google Pay
  • Designed and maintained complex n8n workflows (branching, retries, error handling, sub-workflows) and agents using Deno, including LLM handling via n8n tooling
  • Implemented serverless functions on AWS Lambda
  • Built custom WordPress plugins integrating internal software with third-party systems
  • Supported the legacy platform and developed integration modules
  • Handled Jira support tickets: data plan provisioning, billing/charging, usage management, activation payments, account cancellations, mobile/eSIM provisioning

Technologies: PHP, ColdFusion, JavaScript, Python, AWS Lambda, WordPress, n8n, Deno, Jira, Stripe, Apple Pay, Google Pay

Senior IT Technician / Full Stack DeveloperAustralian Computer TradersJul 2020 – May 2022Full stack developer for a multichannel refurbished-IT e-commerce retailer.

Brisbane, Australia

  • Built a PHP module integrating inventory management across Amazon AU, eBay, Catch and the company's own site with the internal order-management software
  • Achieved real-time inventory sync, reduced order and return errors, automated cross-channel inventory updates
  • Developed internal tools and REST APIs to automate hardware testing and deployment
  • Contributed to an internal order-management system (PHP, Laravel, MySQL)

Technologies: PHP, Laravel, MySQL, REST APIs

Application & Software EngineerHuawei ColombiaNov 2018 – Sep 2019Private and public cloud implementation and service delivery for telecom operators (Claro, Tigo, Movistar).

Cali, Colombia

  • Implemented private and public cloud platforms for telecom operators
  • Implemented and supported services for telecom operators such as Claro, Tigo and Movistar, reaching millions of end users
  • Configured servers, databases and network infrastructure in cloud data centers
  • Automated deployment pipelines with Bash
  • Managed incident response and disaster recovery for mission-critical systems

Technologies: Private cloud, Public cloud, Bash, Linux, SQL, Networking, Data Centers

IT Coordinator / Software DeveloperAPIX Logística EspecializadaOct 2015 – Feb 2018WMS feature development and IT infrastructure/security for a logistics company.

Cali, Colombia

  • Developed WMS features with PHP Laravel and SQL for BI reporting
  • Implemented information security policies aligned with BASC and ISO standards, contributing to both certifications
  • Built IT infrastructure from scratch for new branches

Technologies: PHP, Laravel, SQL

Projects

Other repositories on GitHub

  • react-gifsearch

    gif search made using react

    JavaScript · Jul 2021
  • LPA

    Logic Peripherals Australia

    PHP · Jun 2021

Skills

Languages
  • JavaScript
  • TypeScript
  • Python
  • PHP
  • ColdFusion
  • SQL
  • Bash
Frontend
  • React.js
  • Next.js
  • Vue.js
  • Astro
  • Tailwind CSS
  • HTML5
  • CSS3
Backend / APIs
  • Node.js
  • NestJS
  • Deno
  • Laravel
  • REST
  • GraphQL
  • SOAP
  • Microservices
  • Serverless
  • Stripe
  • Payment integrations
Cloud & Infrastructure
  • AWS EC2
  • AWS S3
  • AWS Lambda
  • AWS RDS
  • AWS Kinesis
  • AWS ECS
  • Docker
  • Linux
  • Windows Server
  • Data Centers
Databases
  • PostgreSQL
  • MySQL
  • Drizzle ORM
  • SQL optimization
AI & Automation
  • Multi-agent architecture
  • LLM integration
  • Anthropic Claude API
  • OpenAI API
  • MiniMax API
  • Agent memory systems
  • Prompt engineering
  • n8n
  • RAG
Tools
  • Git
  • GitHub
  • Jira
  • WordPress plugin development
  • cPanel
Infrastructure & Networking
  • Embedded systems
  • IoT
  • Networking
  • Telecommunications
  • Hardware

Education

Frequently asked questions

Where is Yocemar based and in which time zone?

Yocemar is based in Cali, Colombia (UTC−5). He has worked remotely for Australian companies since 2022, first from Australia and, since 2025, from Colombia, so overlapping with distant time zones is part of his routine.

Does Yocemar work remotely?

Yes. He has worked remotely for PRVIDR (Australia) since 2022: from Brisbane until 2025 and from Colombia since then. He also develops NovaWMS remotely. Before that he worked on-site in Brisbane for Australian Computer Traders (2020–2022).

What is Yocemar's main tech stack?

TypeScript and Node.js (NestJS, Next.js, Astro), PostgreSQL with Drizzle ORM, PHP with Laravel, Python, and AWS (EC2, S3, Lambda, RDS, ECS, Kinesis). He also works with Redis/BullMQ, Deno, n8n and Docker, and deploys his own projects with Docker and CI/CD.

What experience does Yocemar have with AI and LLMs?

He architected NovaWMS around five production AI agents on a shared chat engine and a multi-provider LLM gateway (Claude, MiniMax and OpenAI-compatible providers), with per-company agent memory, OCR of documents and photos, and a deterministic insights engine. In BTM-TMS he uses Claude to extract structured data from photos of transport documents. He also built LLM-driven automations with n8n and Deno at PRVIDR, and DocTrans, an AI document-processing tool for logistics.

What is BTM-TMS?

A transport management system (TMS) in production since 2026 for BTM Pacífico S.A.S., a Colombian road-freight carrier. Cargo owners manage their own trips (load, offer to compatible vehicles, dispatch, proof of delivery, settlement and payments) while the platform issues the legally required documents to the Ministry of Transport's RNDC asynchronously through queues and checks freight prices against the official SICE-TAC floor. Yocemar is the sole full stack developer: architecture, NestJS 11 backend, Next.js 16 frontend, PostgreSQL + PostGIS, Redis/BullMQ, deployment and operation. Every merge to main is deployed to production automatically, backed by 52 integration test suites against a real database and Playwright browser checks. The repository is private.

Does Yocemar have experience with payments and billing?

Yes. At PRVIDR, on a telco/MVNO subscription and billing platform, he generated invoices, ran scheduled payments, corrected payments and investigated failed or incorrect charges. He also integrated payments through APIs, including Stripe, Apple Pay and Google Pay.

How many years of experience does Yocemar have?

Over 15 years in the tech industry, including more than 5 years focused on backend and full stack development. Before that he worked in telecom infrastructure, IT coordination and enterprise software implementation.

What kind of roles is Yocemar interested in?

Backend, full stack and AI engineering roles, ideally remote, where he can design systems end to end (APIs, data, infrastructure and LLM-based agents), as well as leading development teams.

Has Yocemar worked in English-speaking teams?

Yes. He lived and worked in Brisbane, Australia: on-site for Australian Computer Traders (2020–2022) and remotely for PRVIDR from 2022. Since 2025 he has kept working in English with PRVIDR remotely from Colombia.

What is Yocemar's educational background?

Electronic Engineer from Universidad del Valle (2018) and a Diploma in Software Development from Canterbury Technical Institute, Australia (2021).

Is Yocemar available, and how can I reach him?

Availability depends on the engagement. The fastest way to check is the contact form on this site, email, or LinkedIn. You can also ask the chat on this site about his profile first.

Contact

Recruiting, consulting or just want to talk shop? Write directly or use the form.

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