Lucas Fernandes Cassetari

Senior Software Engineer

Londrina, Paraná, Brazil5 yrs 1 mo experience

Key Highlights

Five years of experience in software engineering.
Expertise in backend development with C# and .NET.
Strong focus on delivering business value through technology.

Stackforce AI infers this person is a Backend-focused Software Engineer with expertise in SaaS and E-commerce solutions.

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Skills

Core Skills

C#.net CoreSql ServerAngularReactNode.js

Other Skills

TypeScriptJavaScriptRedisMongoDBAWSSybaseRabbitMQKafkaDockerKubernetesDataDogAppDynamicsSonarCloudAzure DevOps.NET Framework

About

Since childhood, I’ve been passionate about programming and technology, a passion that naturally evolved into a fulfilling career. At 16, I took my first steps in tech through a Technical Degree in Systems Development, and since then, I have been committed to continuous learning and growth. With five years of professional experience and a Bachelor's in Software Engineering, I focus on building solutions that deliver tangible business value, always embracing an ownership mindset and striving for technical excellence. Currently, I am deepening my expertise through an MBA in Software Engineering. I am an avid enthusiast of software architecture, artificial intelligence, and blockchain, driven by the thrill of solving complex problems and creating scalable, high-quality products. My core technologies include: - Backend: C#, .NET Core, .NET Framework - Frontend: Angular, React, TypeScript, JavaScript - Databases: SQL Server, MongoDB, MySQL, Redis, Sybase - Other technologies: RabbitMQ, Kafka, AWS (SQS, Lambda, ECS, EKS, EC2), Azure, Docker, Kubernetes, DataDog, ElasticSearch I believe technology is a powerful driver of innovation and growth, and my mission is to leverage it to transform challenges into impactful solutions.

Experience

5 yrs 1 mo

Total Experience

1 yr 9 mos

Average Tenure

1 yr 6 mos

Current Experience

Férias & co.

Senior Software Engineer

Nov 2024 – Present · 1 yr 6 mos · Remote

Férias & Co. is a Brazilian startup and the first corporate benefit focused on enhancing employee well-being, providing an exclusive portal with a wide range of accommodation and flight options for domestic and international travel with family and friends.
Designed, implemented, and maintained a feature that allows backoffice users to negotiate installments with additional charges or discounts, enabling automated negotiation for delinquent payments and significantly speeding up the collection process.
Designed and implemented the SQL Server database for the company’s largest project, enabling efficient data management and analytics.
Contributed significantly to the refactoring of billing webhooks integrated with Vindi, centralizing processes and fixing major race condition issues that occurred in production.
Implemented the bank reconciliation flow for Cielo in alignment with the product team, automating the processing and reconciliation of installment transactions, integrating credit and debit card payments.
Contributed significantly to the creation of the employee transfer functionality between companies, fulfilling the request from the client Stone&Co. This feature enables employee transfers between different company registrations (CNPJs), ensuring the correct allocation of payments and fiscal responsibilities.
Implemented and maintained functionalities on the HR portal, used by managers of client companies such as Stone&Co, TIM, Sicoob, LocaWeb, ePharma, among others. Responsible for addressing client-specific demands and ensuring efficient use of the offered benefit.
Sustained internal backoffice processes, ensuring continuity and efficiency in billing operations, employee management, and client company administration.
Technologies: C#, .NET Core, Angular, TypeScript, JavaScript, Redis, MongoDB, SQL Server, AWS.

C#.NET CoreAngularTypeScriptJavaScriptRedis+3

Localiza&co

Software Engineer

Aug 2022 – Nov 2024 · 2 yrs 3 mos · Remote

Localiza&Co is the largest car rental company in Latin America, serving millions of users and operating across multiple countries. The company is a leader in mobility and innovation, focusing on scalable, data-driven solutions.
Led the development of the Communications Hub for Localiza Meoo and Localiza Fleet Management products, providing greater visibility and autonomy for business teams to configure and manage communications to both internal and external customers, optimizing processes and improving information delivery efficiency.
Restructured communication cycles for collecting user NPS, offering more accurate insights into customer experiences at key touchpoints during their journey with Localiza&Co, thus enabling more informed business decision-making.
Contributed to the development of the service scheduling feature in the #meucarro app, impacting thousands of users by enhancing the experience of scheduling maintenance and preventive services for Localiza Fleet Management customers.
Modernized customer service systems, focusing on the scheduling of preventive and corrective maintenance services for rented vehicles, spanning multiple business units within Localiza&Co.
Modernized business domains such as Contracts, Assets, Customer Service, Orders, Fines, and Billing, refactoring legacy applications and adopting microservices and event-driven architecture.
Modernized and automated fine processes, from driver assignment to notification, appeals, and related processes, driving operational efficiency and reducing errors.
Technologies: .NET Core, Angular, React, Typescript, SQL Server, MongoDB, Sybase, Redis, RabbitMQ, Kafka, Docker, Kubernetes, DataDog, AppDynamics, SonarCloud, Azure DevOps.

.NET CoreAngularReactTypeScriptSQL ServerMongoDB+10

Retornar

Software Developer

Apr 2021 – Aug 2022 · 1 yr 4 mos · Londrina

Retornar is a Brazilian company specialized in organizing giveaways of iconic vehicles, driven by the sale of exclusive eBooks and custom apparel. Additionally, it promotes charitable actions through the Retornar Institute, contributing to life transformation and supporting those in need.
Contributed to the development of a stockless e-commerce platform for custom apparel, inspired by major players such as Amazon, expanding the product offering beyond eBooks. I was responsible for integrating payment gateways, suppliers, order management, and delivery tracking, ensuring a smooth and flawless customer experience.
Implemented the integration and segregation of e-commerce operations between the United States and Brazil, unifying the stores into a single system. This enabled centralized management of products by country, streamlining international operations and expanding global sales capacity.
Modernized the customer acquisition process by leveraging behavioral data within the store to optimize acquisition strategies and enhance campaign efficiency.
Managed the payment processing for both domestic (Mercado Pago) and international (Stripe) transactions, as well as implementing additional gateways like PagSeguro and BrasPag to provide payment alternatives and mitigate contingency risks.
Created and maintained automated marketing and billing reports in the back office, optimizing data analysis for strategic decision-making. Examples include performance reports for campaigns (CTR, CPA, ROI) and monthly billing reports, detailing revenue, costs, and profits by product and region.
Technologies: C#, .NET Core, .NET Framework, TypeScript, React, AWS.

C#.NET Core.NET FrameworkTypeScriptReactAWS

Medmobi telemedicina

Software Engineer

Jan 2021 – Apr 2021 · 3 mos · Londrina

MedMobi Telemedicina is a Brazilian company based in Londrina, created to deliver technological solutions that enhance healthcare services by connecting patients and professionals through online consultation tools.
Maintained and refactored the Patient Anamnesis feature, improving user experience and ensuring accurate data collection.
Supported and evolved medication prescription workflows, ensuring compliance with regulatory and business requirements.
Continuously optimized and refactored the application, focusing on performance, security, and maintainability aligned with development best practices.
Angular, Node.js, PostgreSQL, AWS, JavaScript.

AngularNode.jsPostgreSQLAWSJavaScript