Senior Full Stack JavaScript Developer - FinTechWe are seeking an experienced Senior Full Stack JavaScript Developer to play a key role in the evolution and support of proprietary trading platforms used by global institutional clients. This is an exciting opportunity for someone passionate about building high-performance, user-centric solutions in a fast-paced financial technology environment.The ideal candidate is highly proficient in JavaScript, with deep experience in ReactJS (v16+) and Node.js, and has a strong understanding of system design and application architecture. If you're eager to work on impactful solutions within the financial markets and enjoy building clean, scalable code, we'd love to speak with you.Key ResponsibilitiesContribute across the full development lifecycle, including technical design, development, deployment, and production supportDevelop high-quality, scalable, and maintainable code for internal and client-facing applicationsCollaborate closely with trading, research, and engineering teams to design responsive, real-time applicationsIntegrate solutions with core trading systems to support performance and scalabilityAssist in the development of white-label trading platforms tailored to client requirementsEvaluate new technologies and contribute to architecture decisions that improve our stackMaintain and enhance CI/CD pipelines and system reliabilityProvide day-to-day support for the applications and help drive ongoing enhancementsSkills & Qualifications5+ years of hands-on experience with JavaScript, including advanced skills in ReactJS and Node.js4+ years of experience applying design principles and building responsive UIs with HTML5, CSS3, and SASSStrong understanding of relational databases (SQL) and best practices for schema design and data integrityProficiency with Git for source control and experience working within CI/CD pipelinesExperience working in Unix/Linux environments, particularly RHELExposure to NGINX, load balancing strategies, and network protocols (TCP/IP)Prior experience with real-time systems or applications handling high throughput dataBackground in FinTech or financial services is a strong plus