# Mauricio Yokoyama Issei **Tech Lead Systems Analysis Specialist** --- ## Professional Summary Systems Analysis Specialist with **over 20 years** of experience in software development, technical leadership, integration of platforms and solving complex problems. **Main Expertise:** Salesforce, AWS, REST/SOAP APIs, Observability (Datadog, Splunk), SRE, and development in Java, Node.js, Python, Go and .NET. Certificate **SRE**, with specialisations in **Data Science**, **Business Agility**, **AWS** and **AI Agency Design Patterns**. I combine deep technical knowledge with strategic vision to manage complex projects and lead high performance teams. Recognized for creating collaborative environments, delivering robust solutions and generating measurable impact on organizations. In love with challenges that combine technical expertise, business vision and agile practices. --- ## Digital Presence - **Email:** mauricio@issei.com.br - **LinkedIn:** [linkedin. with/in/mauricioisei](https://www.linkedin.com/in/mauricioissei/) - **GitHub:** [Github. with/isei](https://github.com/issei) - **YouTube:** [youtube.com/@MauricioIssei](https://www.youtube.com/@MauricioIssei) - **Instagram:** [Instagram. with/yokoyamaissei](https://www.instagram.com/yokoyamaissei/) --- ## Technological Stack ### Developer Java ### Cloud & DevOps AWS (S3, EC2, CodeDeploy) ### Platforms & APIs Salesforce ### Data Science & Analytics Data Science ### Agile Management & Methodologies Scrum ### Leadership & Interpersonal Skills Technical Leadership ### UX & Design Design Thinking --- ## Professional Experience ### Tech Lead **Network** **February 2018 – Present (7 years)** JUNE 29 - 24 Technical leader responsible for solutions on the platform **Salesforce**with integration architectures **on-premise** and **AWS**. Acting on the definition and development of best practices, strengthening the corporate knowledge base with a focus on customer needs. **Key competences:** Salesforce Administration **Measurable results:** - Reduction and stability of the Salesforce environment (2018) - Extension of the number of executives and technicians using the tools (2018) - Reduction of critical impact problems to the Logistics operation (2019) - Less time to attend incidents (2019) - **Economy of more than 3MM** in the negotiation of the Salesforce contract (2020) - Achievement of incident reduction targets and service time (2020) - Stable and scalable PJ Account Opening Solution (2022) - Optimization of logistics operation with deliveries in D0 (2022) - Modernization of the Commercial Grouping Process (2024) - **Increase of more than 15%** in achieving the goals with the Automatic Pipe (2025) --- ### Development Analyst **Serasa Experian** **December 2017 – January 2018 (2 months)** | São Paulo, Brasil Acting in the team of **Digital Strategy**, contributing to the development of the corporate API of **OAuth 2** and unified record. Participation in the Serasa Entrepreneur project. **Stack:** Java (Spring) **Key competences:** Amazon Web Services --- ### Senior Java / Mobile Systems Analyst **Indra** **February 2012 – December 2017 (5 years and 11 months)** | São Paulo, Brasil Leadership of the systems development team for insurance clients. Responsible for surveying and analyzing requirements, defining solutions architecture, quality control, customer relationship and support. **Main projects:** - Technical leader of innovation team, with proposals and solutions **Mobile** and **AWS** (serverless architectures, microservices, native Android, Ionic, DevOps) - Java Insurance System, JBoss Seam, Spring, RichFaces, Oracle PL/SQL - Support and development of operational support systems **Key competences:** Team leadership --- ### Java Developer Analyst **Sysgen** **August 2003 – January 2012 (8 years and 6 months)** | São Paulo, Brasil Application development web and console in **Java (J2EE and J2SE)**, using ASPER framework and MVC architecture. UML modeling-based applications with code generation via **MDA (Model-Driven Architecture)** by the Celero tool. **Key competences:** Java (J2EE/J2SE) --- ### Java Development Analyst **Telephone** **April 2005 – September 2008 (3 years and 6 months)** | São Paulo, Brasil Development of parts storage management system and network supply system. **Key competences:** Java --- ## Academic Training ### Post-graduation in Data Science – Data Analytics / Big Data **Mackenzie Presbyterian University** February 2019 – July 2021 **Digital Diploma:** EED4D2846DDD86592422CC674AB449 **Verification:** [e-diploma.com.br](https://www.e-diploma.com.br/Verificar/Autenticidade.aspx?id=565267%7CEED4D2846DDD86592422CC674AB449%7C11489) --- ### Bachelor of Information Systems **Mackenzie Presbyterian University** | 2001 – 2005 Emphasis on Logistics and Supply Chain --- ### Technical Course in Data Processing **Guarani College** | 1997 – 1999 --- ## Certifications ### AI & Agent Systems (2025-2026) - **AI in Product Management** | O'Reilly Media | [Check](https://www.credly.com/badges/3a1c354d-cc5a-4ee5-85b5-d270d9487a51) - **MCP Developer Blueprint** | O'Reilly Media | [Check](https://www.credly.com/badges/ccbed806-158f-426a-a11b-832ca02dfae8) - **AI Agency Design Patterns** | O'Reilly Media | [Check](https://www.credly.com/badges/f9103348-c341-4b96-9ba0-46c356127b07) - **AI with Knowledge Graphs** | O'Reilly Media | [Check](https://www.credly.com/badges/347ce866-ad0f-47ca-8c42-f42e7ba813e7) - **Building Intelligent AI Agents** | O'Reilly Media | [Check](https://www.credly.com/badges/076e90b7-04bb-4e94-b8d6-eb77f9b1f259) - **AI Agents with LangGraph** | O'Reilly Media | [Check](https://www.credly.com/badges/26427ba5-8744-4540-ab80-345844ea80c0) - **GenAI for Leaders** | O'Reilly Media | [Check](https://www.credly.com/badges/8122b027-8d0f-49de-b264-1a75491cbe0c) - **AI for Leaders** | StartSe University | [Check](https://lms.startse.com/certificado/v2/678fc9c0f8158077f9db505c?studentId=5e337f0a99763dac88d37e79) ### Observability & SRE (2024-2025) - **Datadog Power User** Appoena [Check](https://badges.com.br/share/465eef0a1c14fc6a0383f3a805d294d0.php?a=7683) - **Troubleshooting with Datadog** Appoena [Check](https://badges.com.br/share/2e2541209f996bea07bc41521d86e4a3.php?a=7527) ### Architecture & Data (2023-2024) - **Solutions Architecture** ♪ Itaú Unibanco ♪ [Check](https://www.credly.com/badges/92fc3afc-6e11-4433-9a44-8dc5f6215dd0) - **Practicer – Leadership D&A** ♪ Itaú Unibanco ♪ [Check](https://www.credly.com/badges/a8dad682-bc42-4978-b085-ae720cbd8667) - **Practitioner – Generative AI** ♪ Itaú Unibanco ♪ [Check](https://www.credly.com/badges/231cd871-ab40-4c65-8834-e9ca77792f56) - **Practicer – D&A Foundation** ♪ Itaú Unibanco ♪ [Check](https://www.credly.com/badges/1f596ad2-9834-45b7-99f0-298eddd56cb7) ### Cloud & Infrastructure (2021-2022) - **AWS Certified Cloud Practitioner** | Amazon Web Services | [Check](https://www.credly.com/badges/439e9244-9403-459d-b0ed-02aa51652951) - **SRE Essentials** | Itcerts | [Check](https://www.credential.net/c07a4ff4-8839-43e3-8d23-2edef6446458) - **Solutions Architecture** ♪ Itaú Unibanco ♪ [Check](http://badges.com.br/share/113a264018cdb4367fce684877af45d1.php?a=2148) ### UX & Design (2021) - **UX** | FIAP | [Check](https://on.fiap.com.br/local/nanocourses/gerar_certificado.php?chave=78eb0d83a5db0aadce891455e7d54dfb&action=view) - **Artificial Intelligence** | FIAP | [Check](https://on.fiap.com.br/local/nanocourses/gerar_certificado.php?chave=d49e69fc55f98e0ce7abeeabba01fe8f&action=view) - **Design Think** | FIAP | [Check](https://on.fiap.com.br/local/nanocourses/gerar_certificado.php?chave=5aeee13691392217120b14b94ffb905b&action=view) ### Salesforce (2017-2018) - **Salesforce Trailhead Training** | Salesforce | [Check](https://www.salesforce.com/trailblazer/issei) - **Salesforce Workshop for Developers** | Salesforce | [Check](https://cursos.alura.com.br/certificate/17c88e93-13d1-4ac2-826c-7254c53a93a0) ### Continuous Training - **Alura Training and Training** Alura [Check](https://cursos.alura.com.br/user/mauricio-issei/fullCertificate/8c92662d32a5ec2020d3bd9066f610e0) --- ## Recommendations ### Mylena Mancilha **Digital Products ** *September 2024 – Worked with Mauritius on the same team* > "I had the pleasure of working alongside the Issei throughout this year, and I couldn't help but highlight its exceptional qualities. His technical capacity is impressive, always accompanied by an untiring willingness to collaborate and share his knowledge. It is extremely dedicated, ensuring the delivery of high quality solutions and a lasting legacy. In addition, Issei stands out for his excellent interpersonal relationship, always inspiring the people around him. Together, we can create a positive working environment, open to learning, where communication and collaboration flow naturally." --- ### Saulo Oliveira **.NET Developer** *July 2023 – He answered Mauritius* > "It is with great pleasure that I write this recommendation for Mauricio Issei. I had the opportunity to work with Mauritius on some great and challenging projects and was deeply impressed by his ability to inspire and lead the team. Mauricio is an exceptional professional, whose commitment and dedication are evident in all the tasks he performs. His passion for work is contagious, and he is able to motivate his colleagues to achieve their best performance. One of the most striking features of Mauritius is its leadership and teamwork. It has a clear and strategic vision, capable of guiding the group towards the established objectives." --- ### Vinicius Custodio **Software Engineer at Shape Digital** *August 2021 – Worked with Mauritius on the same team* > "Mauricio is extremely professional and objective for problem solving. It has a holistic view of business and system architecture. In the time we worked together, I had the opportunity to learn and evolve professionally." --- ### Paulo Soderi Noronha **Project Manager at Indra USA** *April 2017 – Worked with Mauritius on the same team* > "I worked with Mauricio in different projects and technologies, in every situation Mauricio succeeded to high level of quality. Mauricio is a very strong team player, always able to help someone else. He is a fast learner and has a strong technical knowledge. Mauricio also appreciates and delivers a very clean code. I recommend Mauricio and desire to work with him soon." --- ### Laercio Lamarca **Executive Manager ** *April 2017 – overseeing Mauritius directly* > "Mauricio is a professional with high performance standards. Recognized by their peers, customers and employees. Takes risks in a mature and balanced way, always achieving the goals." --- ### Rogerio Cruz **Project Manager ** *April 2015 – Supervised Mauritius directly* > "I had the honor of having Mauricio on my team, highly competent professional, reliable, partner, adapts easily to any type of project. Your work is always delivered on time, with low rate of rework and rejections. As a solution architect, he was present in several projects, proposing and developing high complexity solutions. It became a reference to the client and Indra herself. I hope we can work together again."