Senior Full Stack Engineer (Node.js/Python)

Applaudo Studios

23h

About The Position

We are seeking a Senior Backend Engineer who excels at designing and building scalable, reliable systems in complex environments. The ideal candidate will take ownership of backend services, APIs, and integrations, ensuring they are robust, maintainable, and aligned with business needs. Strong hands-on experience with Node.js and Python is essential, along with comfort in distributed systems and cloud environments. A solution-oriented mindset, balancing technical excellence with practical delivery, is key. Experience implementing AI-driven solutions, such as LLM integrations, AI-powered features, or data-driven models, is also a significant requirement.

Requirements

Bachelor’s Degree in Computer Science, Software Engineering, or a related field (or equivalent experience).
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.

Responsibilities

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.