Sr. Full Stack Engineer

Location

United States

Posted

28 days ago

Salary

$150K - $160K / year

Seniority

Senior

Job Description

Sr. Full Stack Engineer

ADDMAN Engineering LLC

Role Description The Sr. Full Stack Engineer is a key contributor within the IT organization responsible for the architecture, development, deployment, and maintenance of full-stack applications that power ADDMAN’s business operations. This role will play a pivotal part in building out the development department at ADDMAN, designing and delivering distributed systems end-to-end—from backend service workers and middleware through business logic, routing, and user-facing interfaces. - Lead the design, development, and operation of full-stack applications built on a modern technology stack: React (with Vite) on the frontend, C# and Node.js (Fastify) on the server side. - Own solutions end-to-end—including architecture, coding, data modeling, deployment, monitoring, and ongoing maintenance. - Produce documentation and project roadmaps needed to scale the team. - Bridge software architecture, application engineering, and data engineering. - Self-starter who thrives in a fast-paced environment with evolving priorities. - Fully remote position, with some travel to ADDMAN sites required as needed. Qualifications - Bachelor’s degree in Computer Science, Software Engineering, Information Systems, or related field (Master’s degree preferred). - 8–12+ years of professional software engineering experience, with deep expertise across the full stack (frontend, backend services, middleware, and databases). - 3–5+ years of experience designing and operating distributed systems in production, including C#, Node.js, React, and relational databases (PostgreSQL and/or SQL Server). - Industry experience (e.g., manufacturing, engineering, technology, or similar) is a plus. - Experience with Fastify, Redis, MongoDB, cloud deployment, and observability tooling is also a plus. Requirements - Architect, develop, and maintain full-stack applications end-to-end, including frontend (React/Vite), backend services (C# and Node.js/Fastify), middleware for business logic and routing, and backend data infrastructure (PostgreSQL, SQL Server, Redis, MongoDB). - Design and implement distributed systems, including backend service workers, business-logic middleware, API routing layers, and user-facing interfaces that operate reliably at scale. - Develop, deploy, and maintain business functions in C#, as well as server-side applications using C# and Node.js (Fastify), ensuring performance, security, and maintainability across environments. - Model, query, and optimize data across relational and non-relational stores—primarily PostgreSQL and SQL Server, with Redis for caching and MongoDB for document workloads. - Own the full software development lifecycle (SDLC) using standard patterns—requirements, design, development, testing, deployment, and maintenance—including CI/CD, version control, code reviews, and release management. - Produce and maintain clear technical documentation, including architecture diagrams, API references, deployment runbooks, and a living project roadmap that aligns engineering work with business priorities. - Partner with stakeholders across the business to translate requirements into reliable, maintainable software—delivering features iteratively in a fast-paced environment with changing demands and shifting priorities. - Monitor, troubleshoot, and continuously improve application performance, reliability, and security across production environments. - Mentor other engineers as the development department grows. - Help shape the long-term engineering and application strategy in partnership with the VP of IT. Company Description

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