Full Stack Developer

Role Overview

The Full-Stack Developer will lead the technical rebuild of The Minexchange (C9B Sister Company) platform from the ground up. You will architect and develop a modern, scalable web application that supports high-volume asset listings, sophisticated search and filtering (Lassonde Curve-based), user dashboards, AI-powered deal matching, and integration with third-party data and analytics services. This is a high-ownership role with architectural decision-making authority.

Key Responsibilities

Architect and build the rebuilt Minexchange platform using a modern stack (e.g., Next.js / React frontend, Node.js or Go backend, PostgreSQL / Supabase) Implement advanced search and filtering for mining assets by commodity, deal type, project stage, geography, and Lassonde Curve position Build user-facing dashboards for sellers (listing performance, buyer engagement), buyers (saved searches, portfolio tracking), and agents (commission pipeline) Integrate AI/ML features: deal recommendation engine, asset valuation signals, and natural language search Connect analytics tools (e.g., Mixpanel, Segment, or custom event tracking) to feed into the Data Engineer's pipelines Build and maintain RESTful or GraphQL APIs consumed by front-end and third-party integrations Implement authentication, role-based access control (buyer / seller / agent / admin), and data security best practices Collaborate closely with the UI/UX Designer to implement pixel-accurate, performant interfaces Set up CI/CD pipelines, code review standards, and technical documentation Mentor junior contributors and review PRs where applicable

Required Skills & Qualifications

5+ years of full-stack development experience Strong proficiency in TypeScript / JavaScript (React or Next.js on the front end) Backend proficiency in Node.js, Go, or Python (FastAPI) Experience with relational databases (PostgreSQL) and search engines (Elasticsearch or Algolia) Familiarity with AI/ML API integration (OpenAI, Anthropic, or similar LLM providers) Experience building multi-sided marketplaces or SaaS platforms Strong understanding of REST and GraphQL API design Experience with cloud infrastructure (GCP, AWS, or Vercel/Railway for deployment) Familiarity with analytics event tracking (Segment, Mixpanel, or GA4) DevOps basics: Docker, GitHub Actions, or similar CI/CD tools Strong communication skills, ability to translate technical decisions to non-technical stakeholders