Danilo Lemos

Implemented CI/CD pipelines, cloud integrations and serverless architectures on AWS, and provided production monitoring and support for clients. Automated deployment and observability to improve release velocity and reliability.

Developed and maintained financial systems in C++ and Python, implemented FIX protocol and event streaming with Kafka/RabbitMQ, and integrated systems with GCP, AWS and IBM Cloud. Delivered unit-tested, production-ready modules using GTest and Boost.

Built and maintained backend systems for fleet tracking, integrated vehicle sensors with Android and server platforms, implemented WebSocket real-time communication and optimized database models in PostgreSQL and Oracle. Automated operations with shell scripting in a Kanban squad.

Developed fee calculation and card transaction systems, integrated legacy services and implemented unit testing and CI/CD best practices to improve system reliability. Supported transaction processing and system modernization efforts.

Maintained and evolved credit recovery systems, integrated with external vendors (Equifax), and developed Oracle PRO*C and PL/SQL solutions while providing requirements gathering and client support.

Migrated C# projects to stored procedures, refactored databases for normalization and implemented high-availability solutions (FCI) to improve maintainability and uptime. Led database design and best practices adoption.

Automated system tasks with shell scripts and managed database migration and versioning to support telecom operations and platform modernization efforts.

Analyzed requirements and developed web and client/server applications, improving document upload system productivity by over 60% and managing SQL Server databases and performance optimizations.

Led a multidisciplinary team to deliver an electronic wallet device, overseeing architecture, embedded software (secure element APIs, NFC), and compliance with encryption and privacy standards under tight deadlines.

Designed BI indicators and dashboards, performed data reconciliation and file processing for telecom monetization and customer migration initiatives, and delivered Tableau reports to support decision-making.

Provided freelance development and consultancy across mobile (Objective-C), BI and database projects, performing requirements analysis and architecture for client engagements.

Designed and implemented data warehouse and BI solutions, automated ETL pipelines with DataStage and SAS, and created Tableau dashboards to monitor telecom KPIs and reduce manual processing.

Delivered systems architecture, full-stack development and mobile apps for public-sector clients (INMETRO, IBGE, DBTRANS), using C#, C++, ASP and J2ME while applying Agile practices and UML modeling.

Modeled and optimized business processes (BPM), participated in SOA design and implemented functional documentation and process simulations using Bizagi and JDeveloper.

Developed high-availability ISO 8583-based transaction systems in C, implemented real-time payment authorization modules and optimized PL/SQL routines for performance and reliability.

Contributed backend development for TGP and Sinacor systems, integrated messaging for financial operations and modeled software processes to support trading and market services.

Developed ATM software (XFS 3.x) and contributed to ERP migration to .NET/C#, implementing low-level device communication, integration testing and SQL Server optimizations for clients Diebold and Bematech.

Designed SOA-based internet banking systems, led requirements gathering and contributed to COBOL-to-Java migrations and IBM WebSphere/BPM-based workflow integrations.

Developed C++ geoprocessing and image analysis software for oil & gas and environmental monitoring, integrating remote sensing and component-based architectures for embedded and desktop environments.

Completed a Bachelor of Science in Data Processing with coursework and training in systems development and databases, graduating in 1994.

Earned a Technical Certificate in Software Development, focusing on practical software engineering and development practices.

Completed approximately 2.5 years of coursework toward a Bachelor of Science in Economics before pausing studies.