Softgic - Full Stack Engineer SOL-1877

Full Stack Developer is needed in São Paulo, Brazil.

Client: Softgic

Location: São Paulo, SP, br

Contract: Freelance

Job Description

This is a remote position.

We are seeking a highly autonomous Senior Full Stack Developer to join a technology company operating in the Digital Identity and Credential Verification space. The organization develops secure solutions leveraging verifiable credentials, identity standards, PKI infrastructure, and cloud-native architectures.

This role is approximately 80% backend/infrastructure and 20% frontend, with a strong focus on backend engineering, infrastructure, security, and technical leadership.

The ideal candidate will design and maintain scalable microservices, build backend services using Java, Kotlin, and Node.js, contribute to React applications, and participate in architectural decisions involving application design, infrastructure, networking, and security.

The role will also collaborate closely with DevOps, Product, and Engineering teams, lead technical discussions, design REST APIs using OpenAPI/Swagger, work with Docker and Kubernetes, and contribute to secure authentication, authorization, and identity-management solutions.

Requirements

• 5+ years of software development experience.
• Strong experience with Java.
• Experience with at least one: Quarkus, Micronaut, Vert.x, or Spring Boot.
• Experience with Kotlin, Node.js, and React.
• Strong experience with microservices architectures.
• Strong SQL and relational database experience.
• Experience with REST APIs and OpenAPI/Swagger.
• Understanding of DNS, TCP/IP, Load Balancers, SSL/TLS, and VPC concepts.
• Experience with Docker, Kubernetes, and Linux.
• Cloud experience — Azure preferred; AWS or GCP accepted.
• Strong English communication skills and ability to lead technical discussions.
• Experience making architectural and design decisions independently.
• Highly preferred: experience with FinTech, Banking, Digital Identity, Cybersecurity, IAM, PKI, X.509 certificates, OAuth, authentication/authorization, or credential verification.
• Experience with GitHub Copilot or AI-assisted development tools is a plus.

Additional Information

This position involves a mix of backend and frontend work, with a greater emphasis on backend engineering and infrastructure.

Collaboration with multiple teams is essential, and the candidate will lead various technical discussions and decisions.