Senior Full Stack Developer

Senior Full-Stack DeveloperCrossTech is seeking a Senior Full-Stack Developer to join an established product and engineering team supporting mission-critical education technology platforms. This is a long-term staff augmentation role, where the developer will contribute to continuously evolving product features, enhancements, and operational needs. The ideal candidate is a hands-on, adaptable engineer who thrives in environments with evolving or loosely defined requirements and collaborates closely with cross-functional stakeholders to deliver practical, context-driven solutions.Job DescriptionDesign, develop, enhance, and maintain web applications using C# (.NET) and ReactContribute across the full stack, including front-end UI development and back-end application logicCollaborate with engineers, product owners, and stakeholders to deliver solutions aligned with evolving needsAdapt quickly to shifting priorities, new feature requests, and changing requirementsParticipate in architectural discussions related to scalability, performance, and maintainabilityWrite clean, maintainable, and well-tested code following best practicesParticipate in code reviews and uphold quality standardsTroubleshoot, debug, and resolve application issuesSupport and enhance existing systems (not a greenfield-only role)Qualifications8+ years of professional experience as a Full Stack DeveloperStrong, hands-on expertise in C# and the.NET ecosystem (required)Solid real-world experience building front-end applications with ReactExperience working across both front-end and back-end codebasesAbility to work effectively with limited documentation or loosely defined requirementsStrong communication and collaboration skillsLocationBrooklyn/NYC 2-3 days a week on-site/requiredCompensation$90–$100/hr Comprehensive benefits offered