Senior Full Stack Engineer – Node.js, Python

Applaudo

Senior Full Stack Engineer (Node.js/Python) designing, building scalable backend systems and AI-driven solutions at Applaudo. Collaborating with engineers to deliver quality and performance in complex environments.

Posted 5/5/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AzureCloudDistributed SystemsJavaScriptMicroservicesNext.jsNode.jsPythonReact

About the role

Key responsibilities & impact

Design, develop, and maintain backend services using Node.js and Python
Design and implement scalable and reliable RESTful APIs
Own backend solutions from design to delivery, ensuring quality and performance
Implement and maintain business logic aligned with complex system requirements
Integrate backend services with internal and external systems
Work with Azure cloud services for deployments, integrations, and backend solutions
Identify and resolve performance, scalability, and reliability issues
Apply best practices in authentication, authorization, and backend security
Collaborate with frontend engineers to ensure seamless system integration
Participate in technical discussions, proposing solutions and improvements
Troubleshoot and resolve issues across different environments
Contribute to improving backend architecture and development practices
Design and implement AI-driven features or integrations as part of backend solutions when applicable

Requirements

What you’ll need

Bachelor’s Degree in Computer Science, Software Engineering, or a related field
5+ years of experience in software development with a strong backend focus (Node.js and Python)
Strong experience with Node.js (NestJS or similar frameworks)
Strong experience with Python (FastAPI or similar frameworks)
Proven experience designing and building RESTful APIs and backend services
Hands-on experience working with cloud environments (Azure preferred; not only exposure)
Experience working with distributed systems, microservices, or modular architectures
Solid understanding of asynchronous processing and backend data flows
Experience debugging, troubleshooting, and optimizing performance in production-like environments
Solid understanding of backend security, authentication, and SSL
Experience working with integrations and complex business logic
Familiarity with testing practices, version control (Git), and CI/CD pipelines
Strong analytical and problem-solving skills with high attention to detail
Ability to explain technical decisions and trade-offs clearly
Strong sense of ownership and accountability for delivered solutions
Working experience with frontend technologies (React / Next.js)
Hands-on experience implementing AI-based solutions in real projects (e.g., LLM integrations, AI-powered features, or data-driven models)
Advanced English proficiency is required, as you will work directly with US-based clients.

Benefits

Comp & perks

Health insurance
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Node.jsPythonRESTful APIsNestJSFastAPIAzuremicroservicesasynchronous processingbackend securityAI-based solutions

Soft Skills

analytical skillsproblem-solving skillsattention to detailcommunication skillsownershipaccountability

Certifications

Bachelor’s Degree in Computer ScienceBachelor’s Degree in Software Engineering