José Danúbio De Araujo

Engineered a Python (FastAPI) backend for the energy trading market, delivering trade management, portfolio segmentation, and analytical dashboards using a strict Controller → Service → Repository layered architecture with PostgreSQL (SQLAlchemy). Integrated Salesforce for real-time trade synchronization and BBCE for live market negotiations and price curve processing, orchestrated via APScheduler

Engineered a Python (FastAPI) backend for the energy trading market, delivering trade management, portfolio segmentation, and analytical dashboards using a strict Controller → Service → Repository layered architecture with PostgreSQL (SQLAlchemy).

Integrated Salesforce for real-time trade synchronization and BBCE for live market negotiations and price curve processing, orchestrated via APSchedul

Microservices Development: Building and maintaining APIs for the Fintech and Tracking sectors using Node.js (NestJS) and Python (FastAPI) to ensure efficient data flows.

Banking Systems: Focused on implementing features that ensure transaction integrity and sensitive data security, following high-availability standards.

Logistics & Telemetry: Contributing to the development of real-time data pro

Developed and optimized RESTful APIs and microservices, reducing application response time by 40%.

I led refactoring initiatives, improving the performance of critical systems by 30%.

I have accelerated the new functionality delivery cycle by 25% by collaborating with agile multidisciplinary teams.

I mentored junior developers and conducted code reviews, increasing the quality of delivery and e

Developed and optimized RESTful APIs and microservices, reducing application response time by 40%.

I led refactoring initiatives, improving the performance of critical systems by 30%.

I have accelerated the new functionality delivery cycle by 25% by collaborating with agile multidisciplinary teams.

I mentored junior developers and conducted code reviews, increasing the quality of delivery and e

Developed scalable microservice APIs with Node.js, NestJS, FastAPI, Python, DjangoApiRest, C# and Golang, resulting in a 40% reduction in application response time.
Implemented automated CI/CD pipelines with Docker and AWS CodePipeline, increasing delivery efficiency by 35%.
Integrate applications with SQL and NoSQL databases such as PostgreSQL and MongoDB, optimizing system performance and scalab

Delivered end-to-end solutions for international customers in agile environments, ensuring fast deliveries and aligned with business needs.
Developed scalable APIs and microservices with Node.js, Python and Golang, increasing system efficiency and processing power.
Built intuitive, performative interfaces with React.js, AngularJS and Next.js, improving the end-user experience.
I implemented SQL an

Developed custom web and mobile applications using Node.js, React.js and Vue.js, improving the user experience and system performance.
I designed and implemented architectures of APIs and microservices, ensuring scalability and high availability for critical applications.
I collaborated with multidisciplinary teams to deliver tailor-made solutions, aligned to the needs of the client and the busine

I developed web, mobile and backend applications using Node.js, React.js, React Native and Golang, increasing the operational efficiency of the solutions.
I designed and integrated RESTful APIs with Python (Django) and Flask, improving inter-service communication and system scalability.
I managed PostgreSQL and MongoDB databases, optimizing performance and data integrity.
Containerized application

I developed cross-platform mobile applications using React Native, Flutter and Ionic, delivering smooth and high performance interfaces.
I collaborated with multidisciplinary teams to create user-centered experiences that are aligned with business needs.
I applied SOLID principles and good architectural practices, optimizing the performance and maintenance of applications.
I conducted code reviews

Provided technical support and resolved IT challenges.
Collaborated with multidisciplinary teams to ensure smooth running IT operations.
Implemented software solutions and optimized system performance.
Built trustful relationships through effective communication.
Contributed to project delivery and knowledge-sharing sessions.

Developed high-performance applications using Python, React.js, and Node.js.
Delivered end-to-end solutions from backend to frontend interfaces.
Created scalable and maintainable code following industry best practices.
Collaborated with clients to understand requirements and propose technical solutions.
Ensured code quality and performance optimization through regular code reviews.

Network monitoring specialist with a focus on DWDM (Dense Wavelength Division Multiplexing) and telecommunications infrastructure. Managed the availability and performance of DWDM fiber optic networks as part of a consortium of operators, ensuring seamless traffic flow and proactive problem resolution.
Key Responsibilities:
Continuous monitoring of networks and servers using advanced tools to quic

Bachelor's degree in Information Technology/Information Systems from Faculdade de Juazeiro do Norte, completed in 2018.