Every organization needs supplies and services to operate. From laptops and rental cars to pens and pallets, all businesses, schools, and government bodies have procurement needs. That’s where CoreTrust comes in. CoreTrust works with our members and suppliers to transform how procurement professionals buy billions of dollars’ worth of supplies and services annually. We’re on a mission to be the one place where buyers and suppliers connect, secure purchasing agreements, transact, and partner to accelerate value and realize savings. To support our rapid growth, we’re seeking a skilled Senior Fullstack Engineer. The Senior Fullstack Engineer designs, builds, and evolves end-to-end software solutions that align with business goals, product strategy, and user needs. This role operates with a high degree of autonomy while maintaining strong communication and collaboration across engineering, product, and stakeholder groups. The ideal candidate is comfortable owning complex features from inception through production, contributing across backend services, frontend applications, and cloud infrastructure. This individual brings strong architectural judgment, balances speed with long-term maintainability, and consistently delivers high-quality software to production in a modern, cloud-native, event-driven ecosystem. Responsibilities Design, build, and evolve modern, cloud-native fullstack systems across frontend, backend, and infrastructure layers. Architect and implement scalable RESTful APIs and event-driven backend services that integrate with internal systems and third-party platforms. Build and maintain mature React and TypeScript frontend applications with a strong focus on usability, performance, accessibility, and maintainability. Own features end-to-end, including discovery, requirements clarification, technical design, implementation, testing, deployment, and post-release iteration. Qualifications Bachelor’s degree in Computer Science or related field preferred, or equivalent practical experience. 7+ years of full stack software development experience in cloud-native environments. Strong production experience with React and TypeScript. Strong backend development experience with .NET and C#. Experience designing and building scalable, highly available web applications. Experience designing and consuming RESTful APIs and event-driven or asynchronous architectures. Experience with relational and/or NoSQL databases, including schema design and optimization. Hands-on experience with AWS and modern cloud services such as compute, storage, databases, and messaging. Experience with containerization (Docker) and Infrastructure as Code tools such as Terraform, CDK, or CloudFormation. Familiarity with CI/CD pipelines and automated testing across frontend and backend systems. Understanding of distributed systems concepts including scalability, fault tolerance, and observability. Experience leading technical design decisions and contributing to system architecture. Ability to operate with high autonomy, translate ambiguous business needs into technical solutions, and communicate effectively with cross-functional teams Preferred Qualifications Experience with Vercel or modern frontend hosting platforms. Experience with advanced GitHub automation and CI/CD workflows. Deep hands-on experience with AWS-native services. Experience working in high-velocity teams deploying to production multiple times per week. Benefits Competitive compensation package Free individual employee medical coverage Company subsidized dental and vision coverage Dollar for dollar 401(k) match up to 6% of your salary with immediate vesting Company-paid Short-Term and Long-Term Disability coverage Employee Assistance Program to support your wellbeing and mental health $1500 annual stipend for undergraduate/graduate college courses; $500 annual stipend for continuing education courses/certifications Free snacks and beverages on-site Brand new, state-of-the-art, tech-enabled work environment in downtown Nashville Flexible/hybrid work culture