> Markdown version of [/jobs/ext/4690507-senior-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/4690507-senior-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full Stack Developer - **Company:** LEVERAGE CUSO 1, LLC - **Location:** United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Code Review, Relational Databases, Design of User Interfaces, Human-Computer Interaction, PostgreSQL, Software Architecture, Systems Development Life Cycle, Next.js, Software Engineering, Systems Architecture, Systems Integration, TypeScript, Web Services, ReactJS, Reliability of Systems, Backend, Git, Event Driven Architecture, Front End Software Development, Api Design, Serverless Computing - **Published:** November 12, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-full-stack-developer--41888cbd-82e8-4271-bc7f-8f3f600c5edc ## About the Role Treasury, User Interface/Experience (UI/UX), Customer Support/Service, Architectural Services, PostgreSQL, JavaScript, Amazon Web Services (AWS), Treasury Management, Scalable System Development, Application Programming Interface (API), * A builder who enjoys solving complex technical problems * Someone who takes ownership and can deliver features end-to-end * A strong communicator who can collaborate across technical and non-technical teams * A pragmatic engineer who balances speed with maintainable architecture * Someone excited to help shape and grow a developing engineering organization, * 5+ years of professional software development experience * Strong experience with TypeScript * Production experience with React and Next.js * Experience working with relational databases (PostgreSQL preferred) * Experience deploying and operating applications in AWS * Experience designing and building APIs and backend services * Experience working in Git-based collaborative environments * Strong understanding of modern software architecture and development best practices Preferred Qualifications * Experience with Drizzle * Experience with SST * Experience working in monorepos * Experience building serverless or event-driven architectures * Experience in fintech, payments, or regulated environments ## Description This role is ideal for someone who enjoys owning features end-to-end-from architecture and backend services to frontend user experiences. You will play a key role in shaping the technical direction of our platform and collaborating with product and operations teams to deliver secure, scalable solutions. Our stack is modern and developer-focused, built primarily with TypeScript, Next.js, PostgreSQL, and AWS. What You'll Work On * Building scalable treasury management platforms used by financial institutions * Designing APIs and services that support financial workflows and integrations * Developing secure, reliable systems for regulated fintech environments * Improving system performance, reliability, and scalability * Helping shape engineering standards, architecture, and technical direction, * Build and maintain full stack applications using TypeScript, React, and Next.js * Develop backend APIs and services * Design and maintain PostgreSQL relational data models * Work with infrastructure and services deployed in AWS * Collaborate with other engineers on system architecture and feature design * Participate in code reviews and maintain high code quality standards * Work closely with product and operations teams to deliver new features * Troubleshoot production issues and improve system reliability and performance