Cnstrux ERP v2.0: Full Stack Engineer Needed

Senior Full Stack Engineer – Cnstrux ERP v2.0 React | TypeScript | Node.js | PostgreSQL | AWS | AI Integrations About Cnstrux Technologies Cnstrux Technologies is building a next-generation, AI-powered ERP platform designed specifically for the construction and field service industries. Our mission is to create an operating system that is: * Faster and easier to use than Salesforce * Mobile-first and highly intuitive * Enterprise-grade and scalable * Built specifically for construction operations and field teams * Powered by AI and workflow automation * Designed to become a multi-industry ERP platform over time This is not a website project or simple CRUD application. We are building a modern enterprise software platform that will serve as the foundation of our companies and future SaaS offerings. ⸻ Position Overview We are seeking a highly skilled Senior Full Stack Engineer to join our development team and help accelerate the buildout of Cnstrux ERP v2.0. You will work alongside our existing engineering team to design, build, and optimize a large-scale, multi-module ERP platform. The ideal candidate has experience building complex SaaS applications, enterprise dashboards, workflow systems, and scalable backend architectures. This is a long-term opportunity for someone who enjoys solving difficult engineering challenges and building products from the ground up. ⸻ Technology Stack Frontend * React * TypeScript * [login to view URL] * Tailwind CSS * React Query * Zustand Backend * Node.js * TypeScript * Express or NestJS * REST APIs * WebSockets Database * PostgreSQL * Prisma ORM Infrastructure * AWS * Docker * GitHub Actions * CI/CD Pipelines Integrations * Salesforce * Twilio * Stripe * Google Maps * NearMap * OpenAI APIs * Internal AI Agent Frameworks (Vektr) ⸻ What You’ll Build * CRM & Customer Management * Communities & Projects * Job Files * Scheduling Center * Estimating Platform * Material Management * Purchase Orders * Vendor Portal * Customer Portal * Financials & Invoicing * Warranty Management * Reporting & Analytics * Performance Center * Safety Center * Mobile Field Service Application * AI Workflow Automation & Copilots ⸻ Responsibilities * Design and develop scalable frontend and backend applications * Build reusable and maintainable component libraries * Architect clean and secure APIs * Develop complex dashboards and data visualization tools * Build workflow automation and business process engines * Implement role-based permissions and audit logging * Optimize database performance and query efficiency * Collaborate with product leadership and engineering teams * Participate in architecture discussions and technical decision-making * Deliver clean, tested, and production-ready code ⸻ Required Qualifications * 5+ years of Full Stack development experience * Strong proficiency in React and TypeScript * Strong proficiency in Node.js * Experience with PostgreSQL and relational database design * Experience building SaaS applications * Experience designing REST APIs * Experience with AWS and cloud infrastructure * Experience using Git and collaborative development workflows * Strong communication skills in English * Ability to work independently and take ownership of features ⸻ Preferred Qualifications * ERP or CRM development experience * Construction technology experience * Field service management experience * Multi-tenant SaaS architecture experience * Experience building drag-and-drop scheduling interfaces * Experience with real-time systems and WebSockets * Experience integrating AI and LLM APIs * Mobile-first and responsive application design experience * Experience building enterprise permission systems ⸻ Compensation * Contract / Freelance * Long-term engagement * 40+ hours per week * Potential opportunity to become a core member of our engineering organization ⸻ To Apply, Please Provide 1. Resume or CV 2. Portfolio and GitHub profile 3. Examples of SaaS applications you have personally built 4. Description of the most complex system you have developed 5. Preferred hourly rate 6. Weekly availability 7. Time zone 8. Examples of ERP, CRM, dashboard, scheduling, mobile, or AI projects ⸻ Screening Questions 1. Have you built an ERP or CRM platform from scratch? Please describe it. 2. Have you designed a multi-tenant SaaS application? 3. What is the largest application you have built and what was your role? 4. Have you implemented role-based permissions and audit logs? 5. Have you built drag-and-drop scheduling interfaces? 6. Have you integrated OpenAI or other LLM APIs? 7. How would you architect an ERP platform that is faster and easier to use than Salesforce? 8. Provide links to applications you have personally developed and describe your specific contributions. Important: Generic proposals, AI-generated cover letters, and applicants who cannot demonstrate ownership of complex SaaS products will be automatically rejected.

Project ID: 40530388