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Helmut – Python, LLM, Java, experts in Lemon.io

Helmut

From Brazilflag

Back-end Web Developer|Senior

Helmut – Python, LLM, Java

Seasoned software engineer with over 15 years of hands-on development across Python, cloud infrastructure (AWS, GCP), and modern AI systems. Most recently, he has focused on integrating large language models (OpenAI, Amazon Bedrock) into real-world applications — including knowledge-based agents, RAG pipelines, and custom diagnostic tools. Skilled in building and deploying scalable systems using Terraform, Docker, and AWS, and experienced with React on the frontend. Brings a strong delivery mindset, combining deep backend engineering with practical AI application expertise.

24 years of commercial experience in
Analytics
Cloud computing
Computer science
Healthtech
IoT
Machine learning
AI software
Enterprise software
Software development
Main technologies
Python
7 years
LLM
3 years
Additional skills
Java
Angular
Terraform
AWS
React
Docker
PostgreSQL
Selenium
Twilio API
Kubernetes
OpenAI API
Flask
Direct hire
Possible
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Experience Highlights

Generative AI Software Engineer
Jul 2024 - Ongoing1 year
Project Overview

A Research and Development project, developing an AI platform similar to ChatGPT web, with additional features like allowing users to build artificial intelligence agents and use user-specific files with the LLM engine.

Responsibilities:
  • Achieved 1200 new users onboarded in the platform MVP in the first year of development.
  • Dealt with prompt engineering, automated agents creation, and building software equipped with custom knowledge bases and memory.
  • Integrated and developed solutions with leading LLMs on the market (Azure OpenAI and Amazon Bedrock), Retrieval-Augmented Generation (RAG), search engines, Python, and React.
  • Deployed and managed scalable environments using Terraform, Docker, and AWS infrastructure.
Project Tech stack:
Python
LLM
React
AWS
Microsoft Azure
GCP
Tech Lead
Apr 2023 - Nov 20237 months
Project Overview

A telemedicine scheduling and service platform. The integration of generative AI to assist in real-time patient diagnosis was a key aspect, enhancing the platform's capabilities and user experience.

Responsibilities:
  • Achieved 6000 Patient/Doctor appointments since the inception of the MVP.
  • Led the development of the platform and the web, which led to marketing campaign strategies.
  • Integrated generative Artificial Intelligence to assist in real-time patient diagnosis.
Project Tech stack:
React
Python
AWS
Docker
LLM
OpenAI API
Software Engineer and Tech Lead
Jun 2015 - Feb 20226 years 8 months
Project Overview

Helmut completed several projects, including:

  • Amway e-commerce product recommendation: Java (backend), React (frontend), Kafka with Spring batch (real-time processing), PostgreSQL (RDBMS), AWS, Docker, and Kubernetes for infrastructure.
  • Oncoclínicas and Celer Biotechnology's telemedicine platform: video streaming, websockets for signaling servers, a WhatsApp chatbot, SMS, email, and push notifications (Twilio and GCP integrations).
  • Algorithmic investment trading: quantum trading for automated investments in stock markets using Metatrader and Python with Selenium for web scraping.
Responsibilities:
  • Developed backend systems using Java and Python.
  • Built and maintained integrations with various external cloud tools, along with containerization and orchestration using Docker and Kubernetes.
  • Led cross-functional teams, often mentoring less-experienced professionals.
  • Took on multiple roles, including technical mentor, problem-solver for high-priority issues, and clear communicator to ensure client satisfaction and alignment with business goals.
  • Spearheaded agile, high-pressure deliveries, such as the rapid launch of a telemedicine platform at the onset of the COVID-19 pandemic. This project played a key role in the success of the Oncoclínicas Group, which expanded during the crisis and attracted investment from Goldman Sachs, becoming one of Brazil’s leading healthcare companies.
  • Led innovative and technically demanding projects, including a global product recommendation system tailored to individual user profiles for Amway’s e-commerce platform.
Project Tech stack:
React
Python
AWS
Angular
Java
Machine learning
Kafka
PostgreSQL
Docker
Kubernetes
Twilio API
GCP
Selenium
Senior Software Engineer
Aug 2014 - May 20159 months
Project Overview

The home automation project involved controlling and monitoring equipment such as cameras, lamps, alarms, and security through user biometrics (Internet of Things).

Responsibilities:
  • Created front-end and back-end architecture;
  • Wrote unit, integration, and e2e tests;
  • Deployed to Cloud Computing services;
  • Set up NoSQL databases.
Project Tech stack:
Angular
MongoDB
Node.js
Java
AWS

Education

2010
Computer Science
Bachelor's

Languages

Portuguese
Advanced
English
Advanced

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