Senior Full Stack Engineer
First seen by Alion on Sep 24, 2026.
Job Summary :
We are seeking a highly skilled and hands-on Senior Full Stack Developer to join our technology team and contribute to the design, development, and integration of scalable, high-performance applications.
The ideal candidate will have strong expertise in Node.js and TypeScript, with a proven ability to build robust backend services, develop modern frontend applications, and integrate third-party communication and collaboration platforms. Experience working with Zoom and Webex APIs/SDKs is a key requirement for this role.
This position is suited for a technically proficient professional who can work independently, take ownership of development initiatives, and contribute to architectural decisions, technical problem-solving, and end-to-end application delivery. The candidate should be comfortable working in a dynamic, remote environment aligned with Barcelona working hours.
Total Experience : 5 - 8 years
Key Responsibilities :
Backend Development & Application Engineering :
- Design, develop, and maintain scalable, secure, and high-performance backend applications using Node.js and TypeScript.
- Build modular, maintainable, and reusable code aligned with modern software engineering practices.
- Contribute to backend architecture, technical design, and implementation decisions.
API Development & Third-Party Integrations :
- Develop, integrate, and maintain RESTful APIs to support application functionality and external service connectivity.
- Implement third-party integrations using APIs, SDKs, and authentication mechanisms.
- Ensure seamless data exchange, error handling, and reliable communication between internal systems and external platforms.
Zoom & Webex Video Conferencing Integration :
- Design and implement integrations with Zoom and Webex platforms using their APIs and SDKs.
- Support video conferencing, meeting management, communication workflows, and platform-related functionality as required by the product.
- Troubleshoot integration challenges, authentication issues, API responses, and third-party service dependencies.
- Ensure integration solutions are scalable, reliable, and aligned with application requirements.
Frontend Development :
- Develop responsive and user-friendly frontend components using React.js and/or Next.js.
- Collaborate across frontend and backend layers to deliver seamless application experiences.
- Integrate frontend interfaces with backend APIs and third-party services.
Technical Ownership & Collaboration :
- Independently manage assigned technical tasks, from requirement understanding through implementation and delivery.
- Collaborate with cross-functional teams, including product, engineering, and technical stakeholders.
- Participate in code reviews, debugging, performance optimization, and continuous improvement initiatives.
Performance, Reliability & Maintenance :
- Identify and resolve application performance bottlenecks and technical issues.
- Maintain application stability, reliability, and code quality.
- Contribute to scalable application architecture and best practices for long-term maintainability.
Skills
Full Stack, Node.js, TypeScript, RESTful API, React.js, Next.js, Video Conferencing