View CV Online of Wellmmer Lucas

I worked as Dev Lead managing a team of 6 devs and as Tech Lead in solution architecture. I was also in charge of the development and maintenance of the application, as well as more complex features. I managed two projects in parallel: Sales Journey (salesjourney.io) and WedClub (wedclub.com.br). I was one of those responsible for the architecture and conception and after the migration from Python to Node.js, of the price composition algorithm (pricing engine), in which Sales Journey has a significant differential among competitors.

Tech Stack: React.js, Next.js, Tailwind, Material UI, React Native, Javascript, Typescript, Node.js, Express.js, Socket.io, Mongoose, Typegoose, MongoDB, AWS (EC2, EB, Amplify, API GW, Lambdas, SQS, SNS, SES, EventBridge, CloudWatch, RDS, DocumentDB, CodeBuild, CodePipeline, among others), and Sentry.

I worked with great relevance in the development of APIs, microservices, and job schedulers (Java 8+ with Spring Boot), as well as supporting the client (Deutsche Bank) with technical designs (architecture). I also contributed to adjustments and maintenance in a legacy application (C# with .NET), and another web application (Angular 2+). In addition, I worked in the manipulation, treatment, export, and migration of application data (DB2, SAP Sybase, Oracle DB, and SQL Server).

Tech Stack: Angular 2+, Mocha/Karma/Jasmine, Java 8+ (Spring Boot), C# (.NET), DB2, SAP Sybase, Oracle DB, and SQL Server.

One of the biggest challenges of my career. I worked as CTO, Tech Lead, Dev Lead, and also as Fullstack Developer. First, I was responsible for all the technical architecture and development of the Tippou app (digital wallet for tips). I managed a team of 4 devs and we were able to launch an MVP of the app in stores (App Store and Google Play) in 4 months of development (July to November). Among the many features, the app had: transactions between accounts using available balance, credit or debit card, and PIX; balance and detailed statement, cashback, loyalty points, discount coupons, receipt groups, payment groups, value split, and payment by QRCode, among others. I also worked as a consultant in a parallel project with Seidor Digital using the same technology stack as Tippou.

Tech Stack: React.js, React Native, Redux Thunk, Material UI, Javascript, Typescript, Node.js, Express.js, Mongoose, Typegoose, MongoDB, AWS (Amplify, Cognito, Lambdas, API GW, SQS, SNS, SES, EventBridge, CloudWatch, DynamoDB, etc), Firebase (Analytics, Crashlytics, Cloud Messaging, In-App Messaging, etc) and GCP (Google Maps, Google CAPTCHA, etc).

I worked for the first time as a Dev Lead managing a team of 7 devs in the ASAS project (asas.sdasystems.org), where I also contributed to the architecture of the project's solutions, as well as to the development and maintenance of the application with more complex tasks and features.

Tech Stack: Angular 2+ (HTML, CSS and JS/TS), Bootstrap 4, jQuery, Grunt.js, C# (.NET Core), Entity Framework Core, NHibernate Core, LinQ, Azure DevOps, SQL Server, among others.