Lead Developer (Remote / Contract-to-Hire)

Eastern Engineering Supply is seeking a Lead Developer with strong full\-stack expertise to drive the design and delivery of scalable, secure, and high\-performing web applications. This is a **remote contract\-to\-hire opportunity**. The initial engagement may be structured as an independent contractor relationship, with the potential for transition to a regular employee position based on mutual agreement, business needs, and performance. The Lead Developer will combine hands\-on software development with architecture, technical problem\-solving, and collaboration across product and technology functions. This individual will play an important role in developing innovative software solutions that serve the construction industry. Our technology platform empowers construction professionals to centralize documents, streamline workflows, and bring transparency to every phase of a project. Proudly serving customers for over 50 years, Eastern Engineering Supply values collaboration, innovation, and integrity. With more than 65 employees across 9 locations in 5 states, Eastern Engineering continues to grow through its commitment to excellence and technology\-driven solutions. ***Applicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa at this time.*** **Job Summary:** The Lead Developer will collaborate with the Director of Sales \& Technology and the Software Product Manager to translate product and business objectives into high\-quality software solutions. The successful candidate will be responsible for hands\-on full\-stack development, application architecture, system design, performance optimization, security, troubleshooting, and ongoing enhancement of web\-based applications. The ideal candidate is a research\- and innovation\-oriented developer who can work effectively across both new development and existing application support. The individual should be comfortable working in a team\-oriented environment as well as independently, communicating technical concepts clearly, solving complex problems, and collaborating with product, design, and technology stakeholders. **Responsibilities** * Develop and deployment of full\-stack web applications using C\#, ASP.NET Core, SQL, HTML, CSS, and TypeScript. * Contribute to architecture decisions, code reviews, and system design to ensure adherence to object\-oriented principles, SOLID design, and performance best practices. * Coding using AI\-assisted development tools including and not limited to Claude, Gemini, OpenAI, Ollama, Qwen. * Implement responsive, user\-friendly front\-end interfaces leveraging React, Tailwind, Storybook, and modern UI/UX design standards. * Ensure application and data security following principles such of least privilege and secure server practices. * Provide support for the day\-to\-day admin related activities of eComm and Planroom. * Optimize applications for performance, scalabili