Wendel Thiago De Sa e Silva

I balance hands-on coding with technical leadership, ensuring solutions are robust, scalable, and aligned with business goals. I design and build modern applications while guiding teams on best practices, architecture decisions, and delivery processes. Partnering closely with Product, UX/UI, QA, Architecture, and DevOps, I foster a collaborative environment where knowledge is shared and solutions are co-created. In a fast-growing company within Brazil’s healthcare and benefits sector, I contribute to modernizing legacy systems, building cloud-native applications, and mentoring peers—all while staying deeply engaged in coding and solution design. Using Agile SCRUM, I drive sprint planning, backlog refinement, and delivery tracking to ensure transparency and continuous improvement. Technical Highlights: - Backend development with .NET 8 and DDD, building RESTful APIs integrated with SQL Server and MongoDB. - Legacy modernization: migrating monolithic .NET applications into modular, cloud-ready solutions. - Frontend engineering with React 19, TypeScript, Vite, and SASS, applying modular architecture and reusable components. - Cloud & serverless: developing Azure Functions to decouple monoliths into event-driven workflows and microservices. - DevOps & CI/CD: leveraging Azure DevOps, Git Flow, code reviews, and automated pipelines. - Cloud infrastructure: supporting migration to Docker containers and deployment on Kubernetes (AKS/EKS). - Node.js microservices for dynamic data processing, including Excel ingestion and transformation. - Code quality: conducting reviews and fostering technical debates to drive immediate fixes and long-term improvements. Skills & Technologies: Backend: .NET, Node.js | Frontend: React, TypeScript | Databases: SQL Server, MongoDB, Redis, Cosmos DB | Cloud & DevOps: Azure, AWS, Docker, Kubernetes | Practices: DDD, SOLID, Agile/SCRUM, CI/CD | Tools: Miro, Figma, Azure Boards

I played a key role in building the technical foundations that later evolved into the environment adopted at MDS Brasil. My focus was on modernizing legacy systems, centralizing data domains, and introducing secure, cloud-native architectures. Collaborating closely with Product, Development, UX/UI, QA, Architecture, and DevOps teams, I ensured solutions were technically robust and aligned with business needs. Through Agile SCRUM practices, I contributed to sprint planning, backlog refinement, and delivery tracking, while remaining deeply engaged in hands-on coding, architecture design, and DevOps improvements. Technical Highlights: - Domain-Driven Architecture: Implemented centralized domains to separate business logic and simplify data access, using MongoDB and .NET 6 (LTS). - Data Integration: Built Azure Functions (HTTP & Timer triggers) for ETL processes, standardizing inputs from legacy systems. - Authorization & Identity: Developed complex authorization domains with MongoDB and Microsoft Graph API, integrated with Microsoft Entra ID (Azure AD), extending RBAC to nested, client-specific roles. - Frontend Modernization: Migrated from Angular to React + Vite + TypeScript, implementing MSAL for SSO and Enterprise Applications for fine-grained access control. - DevOps & Git Flow: Defined branching strategies, enforced pull request approvals, and optimized CI/CD pipelines for faster, more reliable deployments. - Cross-Team Collaboration: Translated business requirements into technical solutions, ensuring alignment and quality across teams. Skills & Technologies: Backend: .NET 6, Node.js | Frontend: React, TypeScript, Vite, MSAL | Databases: SQL Server, MongoDB, Redis, Cosmos DB | Cloud & DevOps: Azure, AWS, Docker, Azure Functions, Git, Azure DevOps | Practices: DDD, SOLID, Git Flow, Agile/SCRUM, CI/CD | Tools: Azure Boards, Miro, Figma

At Neotix, I worked as a solo Software Engineer on a consulting project for Careplus, a VIP health insurance provider in Brazil. I was responsible for designing and delivering a custom CMS platform to support a major marketing rebrand, modernizing content management in an environment dominated by legacy systems. This role required me to handle frontend, backend, database, and architecture design, while also participating in client meetings and collaborating with UX/UI designers, Scrum Masters, Product Owners, and the Tech Lead. Using Agile methodologies, I ensured iterative delivery and alignment with business goals, while remaining fully hands-on in coding and deployment. Technical Experience Highlights - Full-Stack CMS Development: Built a .NET Core 3.1 service-based CMS to manage modular content, with Angular 6 as the frontend and Oracle SQL with PL/SQL for structured data storage. - Architecture & Autonomy: Designed the system architecture independently, ensuring scalability and maintainability while integrating with existing legacy systems. - Client Collaboration: Engaged directly with Careplus stakeholders to gather requirements, refine features, and ensure the CMS aligned with the company’s rebranding strategy. - Agile Delivery: Participated in SCRUM ceremonies with Product Owners, Scrum Masters, and Tech Leads to prioritize tasks and deliver value incrementally. - DevOps & Deployment: Used GitHub for version control, Azure for deployment, and Asana for task management and Kanban tracking. - UX/UI Integration: Collaborated with designers using Miro and Figma to translate wireframes and prototypes into functional Angular components. Skills & Technologies Backend: .NET Core 3.1, PL/SQL, Oracle SQL Frontend: Angular 6, JavaScript, TypeScript Architecture & DevOps: Azure, GitHub, CI/CD pipelines Practices: Agile/SCRUM, Full-stack development, End-to-end delivery Collaboration Tools: Asana, Miro, Figma

I worked on a project focused on the registration movement system for healthcare operations, initially built as a monolithic ASP.NET MVC application with business rules implemented directly in the SQL Server database. In a small team environment, I took on responsibilities including coding, architecture, process optimization, and client collaboration. I contributed to modernizing the system’s architecture, improving performance and security, and developing configurable modules for reading and processing complex files. Technical Experience Highlights: - Modernized a monolithic ASP.NET MVC application with business rules in SQL Server procedures/functions, ensuring scalability and simplified maintenance. - Implemented version control for database scripts in Azure Repos, improving traceability and governance. - Developed a configurable module for reading and processing files (e.g., Excel), with data normalization in a stage environment and application of predefined rules. - Designed validation flows that allowed only correct data into the main environment, with detailed error tracking for records in stage. - Optimized registration movement processes, reducing execution time and increasing data reliability. Skills & Technologies: .NET, ASP.NET MVC, .NET Core, SQL Server, Git, Azure Repos, Azure DevOps, JavaScript, Agile methodologies

At BulleST, a Software Factory Consulting serving major clients such as Santander and Alfa Seguradora, I worked on projects in the banking and financial services sector. In a small team environment, I took on responsibilities spanning coding, architecture, system design, and client collaboration, while strengthening leadership and communication skills. I contributed to legacy modernization, new application development, and the adoption of Agile and DevOps practices. Managing multiple projects simultaneously, I gained technical and architectural expertise while ensuring timely delivery of high-impact initiatives. Technical Highlights: - Web Scraping & Data Integration: Built a .NET Framework 4.5 solution to automate data retrieval from eCAC with certificate-based login, including pagination, extraction, cleansing, persistence, REST API exposure, and an ASP.NET MVC frontend with RBAC. - Financial Calculations Platform: Designed systems to manage internal calculations for fares, fees, fines, and taxes, exposing services to handle complex financial logic. - Multi-Stack Development: Delivered applications with AngularJS/Angular 2 frontends, .NET Core 3.1 Web APIs, and Java Spring Boot backends, integrated via IBM Integration Bus (IIB) to support nationwide contract quoting. - Legacy Modernization: Refactored and migrated codebases into GitLab, improving maintainability and enabling modern version control. - Agile & DevOps: Used Azure DevOps to manage workflows and deploy applications to Azure App Services or on-premise servers. - Collaboration: Partnered with clients, Product Owners, and internal teams to align technical solutions with business needs. Skills & Technologies: Backend: .NET Framework 4.5, .NET Core 3.1, Java (Spring Boot), ASP.NET | Frontend: AngularJS, Angular 2+, TypeScript, JavaScript | Databases: SQL Server, Oracle SQL | Integration: IBM IIB | DevOps: Azure DevOps, GitLab, CI/CD, App Services | Practices: Agile/SCRUM, Legacy Modernization, Full-stack