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Mauricio Yokoyama Issei

Tech Lead Systems Analysis Specialist

More than 20 years of experience in software development and technical leadership, focusing on robust and innovative solutions in Salesforce, AWS and APIs.

About Me

Mauricio Yokoyama Issei

I specialize in Systems Analysis with over 20 years of experience in software development, system analysis, platform integration and problem solving.

My expertise includes observability and support skills, AWS, REST/SOAP APIs, Salesforce and System Development (Java, Node.js, Python, Go and .NET).

I am proud to lead teams and deliver robust technological solutions, prioritizing operational efficiency, innovation and measurable results. SRE certified, with expertise in Data Science, Business Agility and AWS, I combine technical knowledge and strategic vision to manage complex projects.

In addition, I stress the creation of collaborative environments and the positive impact on teams and organizations. I love challenges where I can combine technical expertise, business vision and agile practices to achieve transformative results.

Skills & Skills

Developer

Java Node.js Python Go . NET SOLID JavaScript Spring Boot MLOps Web Security Git Github Vue3 Machine Learning

Cloud & DevOps

AWS (S3, Lambda, DynamoDB, API Gateway, EKS, EC2, ECS, Code Deploy, Code Pipeline, Cloudwatch, IAM, SNS, SQLS) Linux Jenkins IC/CD Datadog Splunk SRE

& APIs Platforms

Salesforce REST/SOAP APIs OAuth 2 Swagger Apigee

Data Science & Analytics

Data Science Data View Statistical Tests (Python/R) R Statistics Date Mesh

Management & Agile methodologies

Scrum Kanban Lean Startup Agile Coach Digital Products Management Agile Metrics Business Agility

Leadership & Interpersonal Skills

Technical Leadership Communication Focus Pitch Feedback Interpersonal Relationship

UX & Design

Design Thinking UX Strategy

Professional Experience

Tech Lead

Network

Feb 2018 – the moment • São Paulo, SP, Brazil · Hybrid

Technical Leader responsible for solutions on the Salesforce platform, with on-premise integration architectures and AWS. I act in the definition and development of best practices, strengthening the corporate knowledge base, focusing on the needs of customers.

Main 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)
  • Saving more than 3MM in trading 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 the achievement of goals with Automatic Pipe (2025)
Salesforce Administration SRE Technical Leadership Solutions Architecture

Development Analyst

Serasa Experian

Dec 2017 – Jan 2018 (2 months) • São Paulo, Brazil

Acting in the Digital Strategy team, contributing to the development of the OAuth 2 corporate API and unified registration. Participation in the Serasa Entrepreneur project. Agile project with Scrum, API First architecture, using Java (Spring), Swagger, automated tests with JUnit and Cucumber, continuous integration with Jenkins, Git versioning, API management with Apigee and AWS infrastructure.

Amazon Web Services User experience (UX) Java REST APIs Scrum

Senior Java / Mobile Systems Analyst

Indra

Feb 2012 – Dec 2017 (5 years and 11 months) • São Paulo, Brazil

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
Team leadership Amazon Web Services Android Ionic Java Oracle PL/SQL

Java Developer Analyzer

Sysgen

Aug 2003 – Jan 2012 (8 years and 6 months) • São Paulo, Brazil

Application development Web and console in Java (J2EE and J2SE), using ASPER framework and MVC architecture. Applications based on UML modeling, with code generation via MDA (Model-Driven Architecture) by Celero tool, focused on business rules.

Java (J2EE/J2SE) MVC UML MDA DB2 PostgreSQL

Java Development Analyzer

Telephone

abr 2005 – set 2008 (3 years and 6 months) • São Paulo, Brazil

Development of parts storage management system and network supply system.

Java EJB JBoss Oracle Team leadership

Projects Highlighting

Commercial Automatic Pipe

Network (2025)

The executive's performance list did not have an intelligent prioritization to optimize the planning time of the day and the day.

Implementation of Likert on Days

Network (2024)

No business day evaluation data. ...

Machine Time Delivery Project by the Executive

Network (2024)

It was only delivered the machine after opening process of Order of Service which was attended only by technicians. ...

Commercial Grouping Project

Network (2024)

Legacy automations had a SLA process of up to 10 days to effect the contract fee for the customer. Process c...

WF Callback Accreditation Status Update

Network (2023)

After the executive sent the proposals, the executive needed to consult the status to see if the proposal is...

WhatsApp Accreditation Formalization Upload

Network (2022)

Sending the link to the client to formalize the PJ accreditation proposal is only carried out by email....

Validation of the Banking House in the channel

Network (2022)

Need to validate in time to fill out a proposal if the bank home data of Itaú, are valid with ...

Accreditation Physical Person

Network (2022)

Commercial executives only had the option of accreditation of Physical Person with standard plan by sending by ...

Evolution of Accreditation in the Standard Plan

Network (2022)

The accreditation in the standard plan was treated in a different flow of screens with information, integrations and filling...

PJ Current Account Opening by Cockpit Network

Network (2022)

Project with experimentation bias of the commercial model of the Network to give autonomy to the Executive to start the opening of...

Onboarding of the new Integrated Community model and Build&Run

Network (2021)

Integration of project teams with the support teams, being necessary to include in the routine of the project team...

Discovery for switching Sybase ASE Corp IPs

Network (2021)

To segregate non-PCI PCI networks, a project was opened to evaluate the change in the IP of the Sybase server ASE Co...

Core Network Support (GE1, WF1, WM1, etc.)

Network (2020)

With much quieter Sales Force support, it was unified support with WF1 Core Network systems,...

Supplier budget review (MGI Tech & Maplink)

Network (2020)

Lack of clarity and knowledge about the pricing of what was already in use in the production and the estimates of expansion ...

Budget Review and CINVEST of the new Salesforce contract

Network (2020)

With the maturity of Salesforce's first contract and significant expansion of tool users, team doesn't know...

Support Network Accreditation (Force Sales + WF1)

Network (2019)

Prioritization and corporate goals for Commercial realize more Accreditations, where it was developed in Salesf...

AFVC Support - Sales Force

Network (2019)

Continuity of the support work with division of the support team to focus on the processes of Commercial, que es...

AFVC Support - Field Force

Network (2019)

Continuity of support work with increased support team needing training and organization to ...

Transition of the Support Team

Network (2018)

Projects of Cockpit and the Field Force, recently deployed in production, without a process of support and change...

Training & Certifications

Academic Training

Post-graduation in Data Science – Data Analytics / Big Data

Mackenzie Presbyterian University

February 2019 – July 2021

Diploma Code: EED4D2846DDD86592422CC674AB449

Check diploma

Bachelor of Information Systems, with emphasis on Logistics and Supply Chain

Mackenzie Presbyterian University

2001 – 2005

Technical Course in Data Processing

Guarani College

1997 – 1999

Certifications

AI in Product Management

O'Reilly Media, Inc.

Issued on: October 2026

View Credential

MCP Developer Blueprint

O'Reilly Media, Inc.

Issued on: September 2026

View Credential

GitHub Copilot Guide

O'Reilly Media, Inc.

Issued on: October 2025

View Credential

AI Agency Design Patterns

O'Reilly Media, Inc.

Issued on: October 2025

View Credential

AI with Knowledge Graphs

O'Reilly Media, Inc.

Issued on: October 2025

View Credential

Building Intelligent AI Agents

O'Reilly Media, Inc.

Issued on: October 2025

View Credential

AI Agents with LangGraph

O'Reilly Media, Inc.

Issued on: October 2025

View Credential

GenAI for Leaders

O'Reilly Media, Inc.

Issued on: September 2025

View Credential

AI for Leaders

StartSe University

Issued: April 2025

View Credential

Datadog Power User

Appoena

Issued: February 2025

View Credential

Troubleshooting with Datadog

Appoena

Issued: October 2024

View Credential

Solutions Architecture

Itaú Unibanco

Issued: September 26, 2024

View Credential

Practicer – Leadership D&A

Itaú Unibanco

Issued: 31 July 2024

View Credential

Practitioner – Generative AI

Itaú Unibanco

Issued: June 27, 2024

View Credential

Practitioner – D&A Foundation

Itaú Unibanco

Issued: May 29, 2024

View Credential

Practitioner – D&A Foundation

Itaú Unibanco

Issued: November 27, 2023

View Credential

Solutions Architecture

Itaú Unibanco

Issued: April 30, 2022

View Credential

AWS Certified Cloud Practitioner

Amazon Web Services (AWS)

Issued: January 2022

View Credential

SRE Essentials

Itcerts

Issued: March 2021

View Credential

UX

FIAP

Issued: March 2021

View Credential

Artificial Intelligence

FIAP

Issued: March 2021

View Credential

Design Think

FIAP

Issued: March 2021

View Credential

Alura Training and Training

Alura

Issued: 13/03/2018 to 10/12/2024

View Credential

Salesforce Trailhead Training

Salesforce

Issued: 2018

View Credential

Salesforce Workshop for Developers

Salesforce

Issued: December 2017

View Credential

AWS Technical Professional

Amazon Web Services (AWS)

Issued: April 2017

Kony Certified Developer

Kony, Inc.

Issued: April 2016

Courses and Capacitations (Allura)

View General Certificate

Software Development and Programming

  • Java SOLID
  • Docker
  • Java OO
  • HTTP
  • Functional JavaScript
  • Spring Boot API REST (Security, Cache, Monitoring)
  • MLOps
  • Web Security
  • Git and Github
  • Vue3
  • Machine Learning with SKLearn

Data Science and Data Analysis

  • Data Science: analysis and visualization
  • Python statistical tests
  • Data Visualization (Graph Design)
  • A: Data analysis
  • Statistics with R (Hypothesis and Correlations)
  • Machine Learning: Model validation
  • Date Mesh

Management and Agile Methodologies

  • Lean Startup
  • Advanced Agile (Nexus)
  • Agile Management in Practice
  • Agile Coach
  • Digital product management
  • Agile Metrics
  • Kanban
  • Agile Team Organization

Leadership and Interpersonal Skills

  • Focus and Productivity
  • Effective Communication
  • Impact Presentations (Pitch)
  • Leadership
  • Stress Management
  • Feedback
  • Profession Tech Lead (Practics and Management)

UX and Design

  • Design Thinking
  • UX Strategy

Infrastructure and Cloud

  • Amazon Code Deploy
  • Linux I & II
  • AWS Certified Cloud Practitioner
  • Amazon S3
  • Deploy on Amazon EC2

Recommendations

"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."

Mylena Mancilha

Digital Products

September 18, 2024 – worked with Mauritius on the same team

"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 goals. Their ability to make quick and effective decisions, even in pressure situations, is remarkable. It is important to highlight that Mauricio's professional expertise is impressive. It has an in-depth knowledge in its area of activity, always updated with the latest trends and best practices. I recommend Maurice Issei without hesitation. If you have the opportunity to work with him or have him on your team, you will stand before an inspiring leader and an exemplary professional."

Saulo Oliveira

.NET Developer

6 July 2023 – Mauricio answered

"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."

Vinicius Custodio

Software Engineer at Shape Digital

August 2, 2021 – 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."

Paulo Soderi Noronha

Project Manager at Indra USA

April 24, 2017 – worked with Mauritius on the same team

"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."

Laercio Lamarca

Executive Manager

21 April 2017 – 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."

Rogerio Cruz

Project Manager

April 7, 2015 – supervised Mauritius directly

Contact

I am always open to new opportunities and collaborations. Feel free to contact us!