Leandro S.

Back-end and Systems Engineer

Senior Backend Engineer
6/1/2021 - 10/1/2021

Actively contributed as a backend engineer focused on services related to the credit product. Demonstrated expertise in developing microservices while participating in crucial architectural decisions and establishing best practices. Leveraged significant experience to coach less experienced colleagues, fostering a collaborative and growth-oriented environment.

Senior Software Engineer
10/1/2021 - Present

Served as Squad Core Leader for a team responsible for the support and architecture of diverse applications and microservices. Actively participated in strategic and highly complex projects. Demonstrated expertise in provisioning resources in AWS, including EC2, EKS, RDS, CodeBuild, CodeDeploy, ElasticCache, SQS, SNS, Lambda, CDK/CloudFormation, CloudFront, S3, and Route 53. Developed and maintained CI/CD pipelines for both web and mobile applications while ensuring quality and consistency through automated testing (integration, unit, end-to-end). Created and maintained shared packages and modules using AWS CodeArtifact. Conducted performance optimizations for applications and databases and developed crawlers and robots using Puppeteer for processing massive data volumes, incorporating WAF and residential proxies for robustness.

Tech Lead
6/1/2020 - Present

Played a key role in the creation of a new social network, contributing from the initial conception phase, defining the scope, and establishing both technical and business requirements. Utilized a modular monolithic backend architecture in Java for an MVP, facilitating a quick launch with the future intent to scale by isolating modules into microservices. Employed CI/CD processes using Bitbucket pipelines and AWS CodeDeploy to ensure efficient deployment workflows. Developed the mobile front-end in React Native and the web front-end in ReactJS, leveraging Codemagic for builds and app store publishing, and App Center CodePush for over-the-air updates.

Senior Backend Engineer
1/1/2014 - 5/1/2021

Developed in-depth expertise in process automation and mobile application development across various sectors including food safety, technology, telemedicine, industry, and government. Utilized proficiency in frameworks such as SoftExpert for implementing process automation solutions. Demonstrated strong capabilities in mobile development and administrative system integration. Focused on optimizing supply chain processes within the food safety domain and streamlining telemedicine services through secure mobile platforms.

Business Intelligence
1/1/2010 - 12/31/2014

Led the implementation of Qlikview for Credit Portfolio Management Panels, handling trillions of processing lines. Developed and managed Credit Assignment Simulation Panels incorporating scenario simulation and C3. Co-created a proprietary Loss Provision Model aligned with RESOLUTION No. 2682, which significantly reduced loss deductions by R$ 420 million annually. This model successfully passed audits conducted by PWC, Ernst Young, and a specialized Risk Analysis and Loss Provision firm, receiving approval from Bacen.

Contributed to several high-impact projects including a Cost Reduction initiative that achieved R$ 34 million per year savings, and managed the Store Closure Project for consigned loans. Directed the Headquarters Migration Project to São Paulo, overseeing physical infrastructure such as Equipment, Datacenters, and Teams. Successfully managed contract renegotiations to optimize organizational expenditure. Developed expertise in project management, risk analysis, financial modeling, and the utilization of Qlikview for complex data processing and visualization.

Software Engineer
1/1/2009 - 12/31/2010

Served as a developer and deployment consultant on diverse projects, achieving significant milestones across multiple sectors. In the public sector, facilitated process automation for Eletrobras CGTEE, advanced corporate governance for CORSAN, and implemented balanced scorecard (BSC) and GED systems for TCE-RS. Enhancements for TRT-4 included process automation and integrations. Within the automotive industry, optimized GED functionalities for John Deere and managed EQM and PDM systems for MWM. Enhanced project management and GED for Actia in the high tech sector, and improved GED and EQM systems for DuPont in agribusiness. Consistently leveraged technical expertise to streamline workflows and amplify operational efficiencies.

Oracle Developer (ERP)
1/1/2007 - 12/31/2009

Developed expertise in Oracle Forms and Reports, with significant experience in SQL and PL-SQL. Maintained legacy systems and corporate intranet using JavaScript, HTML, CSS, and ASP v3, ensuring stable and efficient operation. Automated the IT ticketing system to streamline workflow processes. Proficient in ETL processes, enabling efficient data extraction, transformation, and loading across various applications.

Process Analyst
1/1/2004 - 12/31/2007

Developed proficiency in mapping and optimizing processes with BPMN, transforming as-is processes to to-be states. Implemented a comprehensive management system using SoftExpert and automated process workflows. Managed corporate projects aligning with PMI standards, ensuring structured and efficient project execution. Facilitated strategic planning with an automated management system for indicators, leading to significant improvements. Conducted thorough studies and analysis of strategic planning, identifying inconsistencies that prompted the CEO to revise the company's strategy. Performed internal audits to ensure robust corporate governance.

Information Systems Technology at UNISOCIESC - Santa Catarina Educational Society University
2007 - 2010