Igor Daniel

Develops and evolves Java 11 (Spring Boot) microservices for real-time anti-fraud transaction decisioning. Designs extensible scoring and decision routing with DDD/SOLID principles and resiliency patterns for production stability. Implements event-driven processing with Kafka to decouple real-time authorization from enrichment and improve auditability. Maintains high coverage automated tests across CI/CD pipelines and supports AI/autonomous-agent integrations for triage and decision explainability.

Supports modernization of a post-trade reference data platform by analyzing legacy RTC flows and mapping them to an API-first modular architecture (NRTC). Reconstructs core modules with a focus on performance, security, compliance, and domain alignment, including documenting transactional behaviors and defining MVP scope. Validates API behaviors and contracts using Swagger/Postman and implements contract tests to keep consumer-provider consistency during migration. Participates in technical breakdowns and maintains system endpoints as part of the transition effort.

Builds backend services for agreement management and customer bill generation using Java, Spring, and JUnit-based testing. Implements microservices with REST and GraphQL to optimize data retrieval and integrate services for complex queries. Automates AWS infrastructure with Terraform and performs cloud migrations and scalability testing to improve reliability. Integrates GenAI/LLM workflows using Hugging Face Transformers and OpenAI models, including pipelines for inference, monitoring, and deployment within a microservices ecosystem.

Develops a financial advisor management system for Itaú clients, including advisor CRUD features and an advanced authorization model. Creates backend-for-frontend APIs for Angular clients with security controls, and configures AWS API Gateway for high availability. Implements infrastructure as code using Terraform and builds synchronous and asynchronous data loading flows with AWS messaging services. Integrates authentication/authorization concepts and adds cloud scalability components such as AWS Lambda, DynamoDB, and CloudWatch for monitoring and persistence.

Works with an international team delivering web applications integrated with embedded systems in vehicle environments. Improves performance and response times using parallel computing approaches and scalable architecture techniques. Implements asynchronous messaging patterns using queue- and stream-based communication for reliable inter-module data delivery. Develops GraphQL APIs for optimized client data fetching and supports cloud infrastructure provisioning with Terraform, alongside container orchestration.

Develops and maintains web applications used by banking customers, implementing front-end features with Angular and styling/tooling such as Bootstrap and unit tests. Builds backend services in Java with Spring and JUnit, and integrates APIs for end-to-end functionality across teams. Uses AWS and Docker for deployment and manages delivery pipelines with Azure DevOps. Introduces GraphQL to improve flexibility of data queries and uses Terraform for infrastructure management in AWS.

Performs remote maintenance and builds new systems and APIs for a real estate business segment. Develops backend services using Java and Spring with Hibernate and unit tests, and also delivers PHP/Laravel modules for additional system capabilities. Integrates REST-based APIs and supports front-end functionality with Angular and Vue where needed. Works in an agile delivery process and contributes to deployment support using Docker and cloud services.

Leads maintenance and evolution for systems used by citizens and for internal administrative purposes within a public body. Coordinates a small team and works on backend API services and front-end modules, emphasizing ongoing module development and safe production support. Implements and extends features using Java and Spring-based services and supports persistence and testing with Hibernate and JUnit. Manages work using agile practices and contributes to microservices-based system integration.

Works remotely on maintenance and evolution of APIs and systems for an academic organization. Implements backend capabilities in Java with Spring and JUnit, and delivers additional PHP modules using Laravel and PHPUnit. Builds and maintains user-facing functionality and integrates data via REST-style APIs. Supports iterative development with agile practices and containerized deployments using Docker.

Maintains and evolves systems for judges, lawyers, and prosecutors, including creation of new features and API services. Develops Java-based backend modules using Spring and JUnit, and implements complementary PHP components using Laravel. Builds and updates front-end pages and integrates data via REST-style endpoints. Runs testing and production support activities and follows an agile workflow in a microservices-oriented environment.

Works in the university department on maintenance, evolution, and creation of systems and web sites. Develops backend features with Java and Spring and supports front-end pages with HTML/CSS/JavaScript and Bootstrap. Delivers REST-style APIs and integrates JSON/XML data formats for system communication. Also contributes with PHP development and content/CMS-related work using WordPress and similar tools while following agile delivery practices.

Performs maintenance and production support for an academic Java system and gains practical experience with agile methodologies. Works with Java and Spring-based backend logic, Hibernate persistence, and unit testing. Develops and maintains web UI components using JSF-related technologies and supports front-end assets. Contributes to ongoing testing and delivery within an iterative agile workflow.

Starts professional work by building and maintaining static and dynamic web pages. Implements UI using PHP, HTML, CSS, JavaScript, Bootstrap, and jQuery-based interactions. Supports ongoing page maintenance and updates as part of iterative development. Gains initial experience in web development workflows and testing practices.