Mid-level Full stack Software Engineer
Full-Stack Engineer
Available for hire
Years of
experience
4+ years
Experience
level
Mid-level
Available
for
Full-time, Part-time, Contract, Freelance
Available from
06 Oct 2026
Full Stack Software Engineer with 4+ years of experience building web applications and APIs with TypeScript, React, Next.js, Node.js, and NestJS, with additional professional experience in C# and .NET. Experienced across the full development lifecycle, from technical design and implementation to testing, deployment, and production support. Worked on B2B and SaaS platforms, microservices, REST APIs, external integrations, and cloud-native applications serving thousands of companies and users. Focused on maintainable, reliable software and delivering practical business value.
Skills
JavaScript
TypeScript
React.js
Next.js
NestJS
Node.js
Tailwind CSS
Redis
Web sockets
GraphQL
Playwright
Docker
AWS
Azure
REST
Kubernetes
Microservices
Jest
Vite.js
Apollo
Mongoose
React Query
JWT
Vitest
Material UI
Storybook
MongoDB
PostgreSQL
RabbitMQ
Git
GitHub
Web services
Webhook
Domain Driven Development
MS SQL Server
Oracle
.NET
C#
Languages
Employment History
Software Engineer at
EverOn Data
Current
2024
-
Now
- Modernized a legacy cloud-native SaaS platform with 29 microservices used by thousands of companies, improving Kubernetes (AKS) resource management and scalability through Horizontal Pod Autoscaling (HPA) based on resource utilization. Contributed to CI/CD workflows, production support, and application deployment across environments, improving system stability and reducing manual intervention under varying workloads.
- Built end-to-end features for a B2B SaaS platform with 13 microservices, designing and implementing scalable RESTful APIs, backend services, and external integrations that enabled customers to complete the full purchase process directly through the platform instead of relying on manual requests to the commercial team. Took ownership of key technical and architectural decisions following the Tech Lead's departure.
- Built a B2B data services hub with 10 microservices and 2 frontend applications, integrating customer and administrative workflows with external payment and email services through an API Gateway. Designed real-time balance updates using Server-Sent Events (SSE) and Redis, replacing polling with event-driven updates and providing immediate credit balance changes. Deployed and monitored services in AWS, performing production log analysis and collaborating with the DevOps team on application infrastructure and CI/CD.
Software Engineer at
SIGMA Gestão e Consultoria
2024
-
2024
- Developed a corporate management system from scratch using PHP and Oracle Database, designing backend modules to support cross-company operational workflows and business processes.
- Built responsive internal interfaces using JavaScript, HTML, CSS, and Bootstrap, improving usability and supporting business workflows across the platform.
Software Engineer at
SGN Sistemas
2023
-
2024
- Developed backend services for automated financial payment workflows using Node.js, TypeScript, and RESTful APIs, supporting reliable business-critical operations and external integrations.
- Built frontend modules for a corporate ERP platform using React, Next.js, and TypeScript, integrating REST APIs and delivering responsive interfaces for business-critical workflows.
Software Engineer at
Renova Soluções em Tecnologia
2021
-
2023
- Reduced technical support tickets by 85% in a vehicle inspection SaaS widely used by inspection companies in Salvador, through frontend modernization with Razor, C#/.NET backend refactoring, and usability improvements.
- Developed a secure desktop application for biometric data collection used in the driver's license process for DETRAN-PA, using C#, WPF, and SQL Server.
- Developed a real-time camera monitoring platform for vehicle inspection operations, using React and REST APIs to enable live camera visualization and access to recorded footage across multiple locations.
- Developed a facial validation system for DETRAN-PA, enabling biometric identity verification through facial recognition.
Education
Degree in Systems Analysis and Development at
Faculdade Estácio de Sá
2020
-
2022