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I am a Senior Automation & Integration Engineer with 20+ years of experience designing, implementing, and operating enterprise integration and automation solutions across heterogeneous environments. My background combines traditional enterprise middleware with modern low-code / no-code automation platforms, allowing me to bridge legacy systems with cloud-native and SaaS ecosystems. I have extensive hands-on experience working with IBM Integration Bus, IBM App Connect Enterprise (ACE), IBM MQ, and IBM DataPower, delivering reliable, secure, and scalable integration architectures. In parallel, I have led and executed integrations using Oracle Service Bus (OSB) and Oracle SOA Suite, applying enterprise integration patterns, message mediation, and service orchestration best practices. On the open-source and API management side, I have deep expertise with WSO2 Enterprise Integrator / Micro Integrator and WSO2 API Manager, including gateway configuration, policy enforcement, mediation flows, data services, and API lifecycle management. More recently, I have focused on automation and workflow orchestration using n8n and make, building end-to-end workflows that integrate APIs, SaaS platforms, webhooks, and AI-driven processing. This combination of enterprise-grade middleware and agile automation tools enables me to deliver efficient, maintainable, and business-oriented integration solutions. I am strongly focused on reliability, performance, and observability, with solid experience in troubleshooting, JVM tuning, message flow analysis, and production support across complex integration landscapes.

As a Director of Technology, Leonardo combines deep technical expertise with strategic leadership. He excels at building resilient backends, driving architecture decisions, and aligning technology with business goals. Leonardo is a Senior Java Developer and AWS Certified Solutions Architect with 15+ years of experience designing cloud-native systems and leading cross-functional teams. He has delivered scalable, mission-critical platforms for high-growth startups and enterprises across Latin America. 🔹 Java, Spring Boot, REST APIs, Hibernate, Maven, Gradle 🔹 AWS (EC2, S3, Lambda, Route 53, CloudFront, IAM, CloudWatch, ECS, ECR, Load Balancers) 🔹 Microservices, RabbitMQ, asynchronous/event-driven architecture 🔹 MySQL, PostgreSQL, SQL optimization, Redis, Liquibase 🔹 CI/CD pipelines, Docker, Git, Bash scripting, Linux administration 🔹 Reporting & analytics: Tableau, Power BI, MyDBR, complex SQL views 🔹 Team leadership, agile delivery, digital transformation, mentoring tech teams

WordPress Expert ⭐️Bricks Builder ⭐️ Oxygen Builder ⭐️Elementor ⭐️ Theme Customization . I specialize in ✔️ New Website Development ✔️ Landing Pages ✔️ Website Enhancements ✔️ Bug Fixing ✔️Content Creation and Formatting ✔️ PHP, JavaScript, CSS customization ✔️ Airtable ✔️ Integromat / Make - ⭐️ automation ⭐️ scripting ⭐️ integration Do you need a WordPress website or integrate content between Airtable and WordPress and other apps? I'm a highly experienced website developer and software engineer. I focus on creating websites for small and medium businesses, home businesses, startups, and entrepreneurs that complement and promote their businesses. Apart from website development, I assist clients with system integration and automation using Integromate, Airtable and some Zapier I have a solid software development background and worked for an international company as a software engineer for many years before I started my freelance career in 2020. I have experience in many programming languages, database design and maintenance, project management, fault finding, bug fixing and much more. Other Services ⭐️ SEO ⭐️ Content writing ⭐️Fixing bug and Responsive issues ⭐️and more. Client satisfaction is my highest priority and I guarantee successful project delivery.

Experienced Full stack developer, with vast IT experience. Skills include, analytical thinking and creative problem solving. Able to apply customer service concepts to IT to improve user experience for clients, employees and administration. Tech brief: OOP, Java, React JS, SQL, NOSQL, AWS

Hi, I am a Java Developer with more than 4 years of experience. I have knowledge and experience with several frameworks and technologies. I consider myself reliable at work, a very hard working person who always tries to do his best, offering high performing solutions. I care about accomplishing agreed deadlines, but also about the code and final product quality. My primary skills are: · Java: Desktop (Swing), Enterprise (JSP, Struts 1 and 2, Spring MVC, EJB, Hibernate, Quartz, Jersey), RESTful services. · Web: HTML, CSS, JavaScript, jQuery, jqGrid, Bootstrap. · Tools & IDEs: Eclipse, Netbeans; Maven, Ant; GIT, CVS, SVN; Decompiler; Violet UML Editor; JIRA; Trello; · Databases: MySQL and DB2 Databases; MySQL Workbench, HeidiSQL, Emma or SquirrelSQL for database management. Servers & Servlets Containers: Apache Tomcat, JBoss, Glassfish. · Systems: Linux administration, troubleshooting, bash scripting, configuration. You won't be disappointed, Regards, Marcelo.

Data Scientist specialized on Machine Learning, Supervised Learning, Deep Neural Networks, Recurrent Neural Networks and Reinforcement Learning. I have worked on a wide variety of industries: finance, bank, hedge funds, manufacturing, technology, domain names, horse wranglers and betting games. With machine learning I have produced stock market strategies with a compound annualized return near 20% (yearly), which are currently publish on my web page (see below). In 2022 I was certified as AWS Machine Learning Specialist. The first 10 years of my professional career I had worked as a backend developer, coding high availability services on Python, C, Java and Perl. Since 2012 I am working full time as a data scientist. I enjoy machine learning. I am not a standard data scientist: I have studied the implementation details of the main ML algorithms, allowing me to customize them according to the nature of the working problem. Since 2014 I am working developing ML models freelance, on the Upwork platform. I have more than 11,000 net hours, 35 different jobs, ranked with 4.99 stars and 100% job success rate. - Programming (currently): Python - Programming (past): R, Perl, Java and C. - Machine Learning Models: Naive Bayes, Fisher Discriminant Analysis, Nearest Neighbor, Multivariate Regression, Logistic Regression, Decision Trees (Chaid and CART), Support Vector Machine, Genetic Algorithm and PSO - Ensembles: Random Forest, Gradient Boosting Machine, Bagging and Boosting - Deep Learning: Traditional Neural Networks (Backpropagation, CPN, SOM), Deep NN, Convolutional NN, Recurrent NN, LSTM and Bidirectional Recurrent NN. TensorFlow with GPU using Low Level API and Keras. - Reinforcement Learning: Deep Q networks, Policy Gradient, Actor-Critic, Actor-Critic with Experience Replay (ACER), Soft Actor-Critic (SAC), Adversarial Imitation Learning, Hindsight Experience Replay (HER), Proximal Policy Optimization and TPRO - Clustering: Hierarchical, K-Means, Fuzzy C-Means, EM, DBSCAN, OPTICS, Clara and PAM. - Hadoop: Map/Reduce, Pig, Hive and Spark - AWS/Azure Example of my works: gmoncarz.github.io/machine_learning_tour