Senior Full Stack Developer

Position Summary: The Senior Software Engineer will serve as a hands-on Technical Lead for Rustica’s customer-facing commerce platform and the supporting systems that connect customers, employees, business operations, and manufacturing. The primary focus of this position is Rustica’s revenue-critical e-commerce storefront, including product configuration, pricing, cart, checkout, payments, customer accounts, content, and order processing. The engineer will also contribute to Rustica’s internal commerce administration platform and its manufacturing and operations platform, which is being developed to manage production workflows, employee activity, time tracking, operational reporting, and other internal business processes. This role is also responsible for the AWS and Cloudflare infrastructure supporting Rustica’s applications. This includes deployment, security, monitoring, scheduled workloads, DNS, content delivery, backups, recovery, and production incident response. This is a hands-on individual-contributor role with technical leadership responsibilities. The Technical Lead designation refers to ownership of architecture, engineering quality, and production reliability; it does not necessarily include direct people management. This is not solely a feature-development or prototype-building position. The engineer must be able to evaluate existing and rapidly developed code critically, identify unsafe or fragile architecture, and implement production-quality solutions that preserve security and data integrity. AI-assisted development tools may be used, but the engineer remains responsible for validating architecture, correctness, security, performance, maintainability, and production readiness.

Application and Backend Architecture: Design and maintain secure APIs connecting the storefront, administrative systems, manufacturing operations, and third-party platforms. Establish clear system boundaries and data contracts between applications. Design and maintain PostgreSQL schemas, migrations, queries, indexes, constraints, and transactional workflows. Build systems that remain correct during concurrent requests, retries, partial failures, duplicate events, and third-party outages. Prevent duplicate payments, duplicate order submissions, conflicting updates, partial data writes, and inconsistent state between systems. Build reliable background jobs, queues, scheduled processes, retry policies, and failure-recovery workflows. Evaluate existing architecture and identify security, reliability, performance, and maintainability risks. Improve or replace fragile architecture without unnecessarily disrupting working production systems. Establish automated testing around revenue-critical and operationally critical behavior. Lead architecture reviews and maintain practical engineering standards. Review code for correctness, security, maintainability, and alignment with established architecture.

Internal Commerce Administration: Maintain and improve the internal platform used to manage products, product configurations, pricing, orders, customers, content, promotions, and operational settings. Build tools that allow non-technical employees to manage complex commerce data safely. Improve permissions, audit history, conflict handling, validation, and data-integrity protections. Develop integrations connecting commerce data with ERP, manufacturing, marketing, shipping, accounting, and reporting systems. Automate repetitive business processes while preserving appropriate review, audit, and recovery controls. Ensure administrative changes cannot unintentionally compromise storefront behavior or production data.

Manufacturing and Operations Systems: Contribute to the architecture and development of Rustica’s manufacturing and operations platform. Build systems for manufacturing order intake, production workflows, work assignments, employee activity, time tracking, material usage, exceptions, and operational reporting. Create trustworthy data models for measuring manufacturing cycle times and identifying production constraints. Ensure manufacturing metrics are based on clearly defined and auditable events rather than fragile interface behavior. Maintain reliable order delivery from the commerce platform into internal manufacturing and downstream business systems. Develop tools supporting inventory, scheduling, maintenance, safety, customer service, IT, and other operational departments. Support integrations with CAD, SolidWorks, printing systems, shop-floor equipment, managed devices, and related manufacturing technology when required. Help determine when Rustica should build an internal capability and when it should integrate an established external system. Review rapidly developed or AI-assisted internal application code before it becomes critical to business operations.

Technical Leadership and Business Collaboration: Work with leadership and department stakeholders to translate business and operational needs into appropriate technical solutions. Evaluate proposed work based on business value, technical risk, complexity, and long-term maintenance cost. Communicate architectural decisions and technical risks clearly to technical and non-technical stakeholders. Provide technical direction, code review, and guidance to employees, contractors, and other developers. Establish practical engineering standards without introducing unnecessary process or complexity. Maintain architectural documentation, system diagrams, operational runbooks, deployment procedures, and recovery instructions. Take responsibility for projects from discovery and design through implementation, deployment, monitoring, and ongoing support. Make informed build-versus-buy decisions based on business requirements, risk, and total cost of ownership. Leave systems more understandable, testable, and supportable than they were found.

Required Qualifications: Seven or more years of professional software engineering experience, including at least three years owning architectural decisions, production reliability, or technical direction for business-critical