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
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
Cloud & DevOps
& APIs Platforms
Data Science & Analytics
Management & Agile methodologies
Leadership & Interpersonal Skills
UX & Design
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)
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.
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
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 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.
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.
- Discovery and implementation of quick feasibility solution to meet pain and evaluate the planning model and methodology.
- Designed outline solution to process prioritization intelligence in Salesforce itself with scheduled batch processes.
- Increase of more than 15% in achieving goals and agility in scheduling and customer care.
Implementation of Likert on Days
Network (2024)
No business day evaluation data. ...
- To enable the capture of the information of the journey satisfaction in a controlled and reusable way by the other journeys.
- Designed technical solution to standardize the capture and validation of eligibility for capture of the research.
- Developed POC in Quicksight analytical follow-up report.
- Visibility and creation of OKR of satisfaction of the journeys.
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. ...
- To enable a solution to validate the commercial service model where a new machine auto boot technology was used at the time of the proposal.
- Implemented in the first half of 2024 an MVP for validation of the model.
- Implemented in the second semester definitive architecture to choose the type of technology and quantity that can be delivered on time by commercial.
- Speed and activation targets in the act of Accreditation.
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...
- Discovery and design of a technical solution to enable modernization.
- Development of application of validation of arrangement of participants.
- Implemented and refined solution for implementation of the new Commercial Group with the team.
- Modernization of the process with validation and execution in time of proposal.
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...
- Implement service that receives the return of the status of the proposal, which is sent by the WF after processing.
- Mapping the main reasons for proposals that were stopped by errors or failures.
- Refining root cause solutions for identified problems.
- Implemented WF callback service for TV2.
- Open stories and prioritized root cause corrections of the problems of the proposals.
- Rapid feedback on the situation of the proposal for executives.
- Prioritization of root cause corrections of validations and problems that left the proposal pending.
WhatsApp Accreditation Formalization Upload
Network (2022)
Sending the link to the client to formalize the PJ accreditation proposal is only carried out by email....
- Integration architecture between TV2, QI1 and EP8 of Itaú via internal environment.
- Authentication of the Itaú service via STS.
- Release of routes, security rules and application registrations in Itaú.
- Condition functionality for controlled pilot audience.
- Project correlated with formalization developments that aims to give more clarity to the client than is being contracted.
- Designed and aligned an internal integration architecture between AWS Network and Gateway internal bank.
- Registered consumer applications in the STS and the bank Gateway.
- Due to lack of technical team and prioritization by the quad of the acronym IQ1, all development of the acronym form of 'innersource' was carried out.
- Integration developed with parameterized configurations to enable reuse by other channels.
- Pilot in production worked well, but was pivoted due to the correlation of this project with the improvements of formalization that were not well accepted by executives and with a lack of automated processes that depended on an operational performance of the IT team to effect proposals that did not have customer interaction and also on formalization of cluster proposals that was not coherent to send values and conditions that would not be effective to the customer after the processes of grouping and equating fees.
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 ...
- Draw integration architecture.
- Refine with UX how to treat validations.
- Integrated approval with GE quad.
- Integration between TV2 and GE1 was implemented in the AWS layer, and only TV2 is responsible for integration with Salesforce that triggers the consultation.
- Project implemented in phases, with controlled pilot audience, with validation and gradual monitoring of each phase, being made total expansion after a lot of validations with executives and implementations of improvements.
- Validation with dynamic business rule being the GE1 responsible for determining whether it is an impediment return or that accepts the home with the guidance messages.
- Small reduction in cases of bank suspension of customers Itaú. It is discovered that the situation that makes the account fit for receipt is not summed up in a status.
Accreditation Physical Person
Network (2022)
Commercial executives only had the option of accreditation of Physical Person with standard plan by sending by ...
- Development of a new flow to PF.
- Approval of integrations.
- Implantation with an expansion strategy for wave users, with monitoring and validation of each new proposal.
- Seeked to develop a flow of composite screens with 'functional' features at Salesforce (low-code) and with more specialized micro screen components.
- Support in parallel of another epic involved to simplify and reduce registration data of the accreditation proposal.
- Deliver day in Cockpit integrated with Ipricing trading, with all already evolved PJ features such as requests for more than one machine and more than one technology, Flex eligibility, offers and price trading.
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...
- Implement in the flow of the standard plane the filling of the amount of machines per type of technology.
- Implement the same eligibility consultation of Ipricing Flex contracting.
- To homologate all integrations to the generation of Service Orders and PV.
- Refined needs and elaborated a short delivery strategy of simple implementation and in parallel the discovery of total absorption of the flow of the standard plan within the trading process of Ipricing 2.0.
- The possibility was initially given only to inform more than one machine for a single technology.
- It was delivered following the unified journey of Ipricing 2.0 considering as the standard offer options, with or without Flex depending on eligibility and also with the possibility to choose more than one type of technology and also inform more than one machine per technology in the proposal.
- Optimization of the logistics operation, being able to perform in D0 in most of the consultations the complete delivery of the proposal made by the commercial.
- Optimization of the Executive operational that does not need to open new machine requests after the proposal.
- Executive correctly informs the client in hiring time if it has anticipation in D2.
- Agility in the delivery of demands, being the three great epics solved in two strategic deliveries.
- Standardization of the negotiation day without further the need for two squads to take care of Cockpit Accreditation.
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...
- Participation of technical refinements.
- Screen development and integrations.
- Monitoring of deployments and validations.
- Review and refactoring of integrations.
- Discovery for MVP evolution.
- Incident service.
- In the pilot's follow-up point improvements in the MVP were identified to increase the number of executives who experienced the solution.
- Improved integration logs and monitoring to quickly identify problems or divergences.
- Stable solution and provided scaling for most executives to use.
- With adjustments of the care model, the process was shortened and the bank manager did not need to act, giving more autonomy to the executive.
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...
- Document support backlog.
- Enable project team in incident care.
- Follow-up in pairs with dev and support in incident care and on shift.
- Pass of knowledge on recurrent productive problems.
- Times with delivery routines and support in relay of 'beater' and timer.
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...
- Find, map and estimate effort to maintain each application or service.
- Search for versioned sources.
- Analysis of the settings of each application/service.
- Survey of how to test each application and service.
- Apply and test under approval the change.
- Project was depriorized after initial high impact estimation in a very large volume of applications and services still under survey.
- Another solution was presented by the infrastructure team that would not need to change the current IP.
- Mapping and understanding the support team over many legacy applications.
Core Network Support (GE1, WF1, WM1, etc.)
Network (2020)
With much quieter Sales Force support, it was unified support with WF1 Core Network systems,...
- Analysis of so-called critics in need of quick palliative solutions.
- Specification of root cause improvements.
- Development of improvements and corrections.
- Validation and monitoring of project deployments.
- Follow-up of project refinements with support bias, prioritizing with teams non-functional monitoring, safety and quality requirements.
- Attention to calls for various problems (Cadastrals, Accreditation, Banking, Product Qualification, Structural Projects, etc.).
- Log improvements.
- Included integrations for capture of logs in Splunk.
- Support team training with knowledge of Salesforce.
- Achievement of targets for reducing incidents and time of attendance of calls.
- Reduction of batch mesh abends.
- Support team with training also in Salesforce.
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 ...
- Alignment with each supplier to clarify pricing.
- Alignment with Logistics and Commercial areas on underutilized resources and expansion planning.
- Elaboration of new conditions and needs for new contract.
- Planned and built presentation and defense for CINVEST.
- Canceled hiring tablet rentals for commercials.
- Reviewed and updated the version of mobile phones rented to logistics technicians.
- Separated from the supplier's equipment and resources contract, the service contract.
- Economy of approximately 500k in renegotiated contracts.
- Better budget management of suppliers.
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...
- Meetings with Salesforce to detail each type of license.
- Review of all planned features and needs.
- Align with each area number of users and expansion expectations.
- Set license limits management.
- Spread all costs at the lowest level of detail.
- Prepared presentation and defense for CINVEST.
- Detailed for each team as the budget was composed.
- Economy of more than 3MM in the final contract negotiation.
- New contract negotiated in partnership with CoE Salesforce of Itaú and purchasing team.
- Clearness of areas on the cost of each type of license.
Support Network Accreditation (Force Sales + WF1)
Network (2019)
Prioritization and corporate goals for Commercial realize more Accreditations, where it was developed in Salesf...
- Mapping of Cockpit Accreditation integrations and architecture.
- Monitoring the refinements of the new Accreditation.
- Attendance of incidents.
- Validation of every new delivery of changes in production.
- Execution of implementation Runbooks in production and monitoring of validations.
- Direction for the team of improvement projects and treatatives of root cause of incidents.
- Rapid incident response.
- Reduction of critical problems for commercial operation.
- Higher number of deliveries with quality of the project team.
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...
- Discovery of Cockpit features.
- Team training for support.
- Prioritization of root cause corrections backlog.
- Development of root cause corrections.
- Participation of refinements with project team, opining on best practices and development quality.
- Validation of every new delivery, sharing knowledge with the support team of what was being evolved.
- Specifying and validating Software Factory development in root cause treatatives.
- Reduction of critical impact problems for commercial operation.
- Less time to attend to incidents.
- Better management of incidents and problems.
- Team of projects with more deliveries and higher quality.
AFVC Support - Field Force
Network (2019)
Continuity of support work with increased support team needing training and organization to ...
- Discovery of Field Force features.
- Team training for support.
- Prioritization of root cause corrections backlog.
- Development of root cause corrections.
- Participation in refinements with project teams, opinioning on best practices and development quality.
- Validation of every new delivery, sharing knowledge with the support team of what was being evolved.
- Specifying and validating Software Factory development in root cause treatatives.
- Reduction of critical impact problems for the Logistics operation.
- Less time to attend to incidents.
- Better management of incidents and problems.
- Team of projects with more deliveries and higher quality.
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...
- Analyze and direct incomplete errors, failures and features.
- Align versioning, change and deployment processes.
- Implement monitoring.
- Treat incidents.
- Aligned and created a stream of support calls for commercial executives and logistics technicians and managers.
- Aligned with the area of information change and security, the support team's responsibility is to validate and implement the deployments of the teams in Salesforce in a centralized manner.
- Aligned with best practice teams for versioning and using development Sandboxes.
- Specified and prioritized along with Salesforce development plant the root cause corrections for productive problems.
- Lined up with CMR team monitoring and alarms.
- Reduction and stability of the Salesforce environment, both for the Sales Force and for the Field Force.
- Extension of the number of executives and technicians using the tools.
- More focus and number of project deliveries by project teams.
Training & Certifications
Academic Training
Post-graduation in Data Science – Data Analytics / Big Data
Mackenzie Presbyterian University
February 2019 – July 2021
Diploma Code: EED4D2846DDD86592422CC674AB449
Check diplomaBachelor 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
MCP Developer Blueprint
O'Reilly Media, Inc.
Issued on: September 2026
GitHub Copilot Guide
O'Reilly Media, Inc.
Issued on: October 2025
AI Agency Design Patterns
O'Reilly Media, Inc.
Issued on: October 2025
AI with Knowledge Graphs
O'Reilly Media, Inc.
Issued on: October 2025
Building Intelligent AI Agents
O'Reilly Media, Inc.
Issued on: October 2025
AI Agents with LangGraph
O'Reilly Media, Inc.
Issued on: October 2025
GenAI for Leaders
O'Reilly Media, Inc.
Issued on: September 2025
AI for Leaders
StartSe University
Issued: April 2025
Datadog Power User
Appoena
Issued: February 2025
Troubleshooting with Datadog
Appoena
Issued: October 2024
Solutions Architecture
Itaú Unibanco
Issued: September 26, 2024
Practicer – Leadership D&A
Itaú Unibanco
Issued: 31 July 2024
Practitioner – Generative AI
Itaú Unibanco
Issued: June 27, 2024
Practitioner – D&A Foundation
Itaú Unibanco
Issued: May 29, 2024
Practitioner – D&A Foundation
Itaú Unibanco
Issued: November 27, 2023
Solutions Architecture
Itaú Unibanco
Issued: April 30, 2022
AWS Certified Cloud Practitioner
Amazon Web Services (AWS)
Issued: January 2022
SRE Essentials
Itcerts
Issued: March 2021
UX
FIAP
Issued: March 2021
Artificial Intelligence
FIAP
Issued: March 2021
Design Think
FIAP
Issued: March 2021
Alura Training and Training
Alura
Issued: 13/03/2018 to 10/12/2024
Salesforce Trailhead Training
Salesforce
Issued: 2018
Salesforce Workshop for Developers
Salesforce
Issued: December 2017
AWS Technical Professional
Amazon Web Services (AWS)
Issued: April 2017
Kony Certified Developer
Kony, Inc.
Issued: April 2016
Courses and Capacitations (Allura)
View General CertificateSoftware 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!