> Markdown version of [/jobs/ext/3624393-senior-full-stack-engineer-core-ux](https://www.wearedevelopers.com/jobs/ext/3624393-senior-full-stack-engineer-core-ux). 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 Engineer - Core UX - **Company:** Recruiting from Scratch - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $185,000.0 - $225,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Elastic Compute Cloud, Application Performance Management, Software as a Service, Cloud Computing, Relational Databases, Software Debugging, DevOps, Distributed Systems, Interaction Design, Python (Programming Language), PostgreSQL, Object-Oriented Software Development, Software Engineering, TypeScript, Enterprise Software Applications, ReactJS, Large Language Models, Generative AI, Backend, Front End Software Development, Serverless Computing - **Published:** October 8, 2026 - **Apply:** https://www.disabledperson.com/jobs/75884423-senior-full-stack-engineer-core-ux ## About the Role * 5+ years of professional software engineering experience. * Strong full-stack engineering background with meaningful frontend depth. * Experience improving and polishing existing product functionality rather than only building greenfield features. * Strong experience with a modern frontend framework, preferably React. * Proficiency with JavaScript, TypeScript, Python, or a comparable object-oriented language. * Strong software engineering fundamentals across system design, debugging, and problem-solving. * Experience building or supporting cloud-based applications. * Familiarity with serverless technologies, including Lambda and EC2. * Experience with asynchronous workflows. * Comfortable working with relational databases, ideally PostgreSQL. * Strong ownership mindset and ability to execute without heavy oversight. * Proactive communicator who surfaces blockers, asks good questions, and keeps stakeholders informed. * Comfortable working in an environment that values experimentation, speed, and measurable outcomes. Preferred * Track record of creating premium, highly polished user experiences. * Strong understanding of UI consistency, responsiveness, interaction patterns, and frontend performance. * Experience collaborating across frontend, backend, data, and infrastructure teams. * Experience with LLMs or generative AI. * Experience with distributed systems. * Background building B2B or enterprise software where reliability and usability both matter. * Experience working in a fast-paced startup or growth-stage environment. * Strong product instincts and attention to detail. ## Description * Improve and refine existing product functionality to deliver a more polished, intuitive user experience. * Own full-stack product improvements spanning frontend behavior, backend support, and production rollout. * Focus closely on layout, interaction design, responsiveness, visual consistency, and overall product quality. * Build and improve frontend experiences using a modern framework, preferably React. * Work across JavaScript, TypeScript, Python, and related technologies as needed. * Improve application performance in ways that directly affect end users. * Partner with full-stack, data, ML, and DevOps engineers on product and platform improvements. * Build scalable backend systems and APIs that support user-facing functionality. * Work with serverless and cloud infrastructure, including environments using Lambda and EC2. * Develop and support asynchronous workflows. * Work with relational databases, ideally PostgreSQL. * Experiment quickly, measure outcomes, and iterate on product improvements. * Own projects independently and drive them through completion with minimal oversight.