We’re building a suite of B2B SaaS tools for Amazon sellers and agencies. This is a long-term position, not a one-off project. You will be our primary developer as we build and maintain multiple dashboards and web applications over the coming years. You need to be comfortable owning a codebase, making technical decisions, and shipping real product – not just small CRUD apps.
The core stack we expect you to use:
– Backend: Node.js (TypeScript preferred) with REST APIs (Express/Fastify). Python (FastAPI) for ETL/background jobs is a strong plus
– Frontend: React (Next.js or SPA), component-based UI, responsive design, light/dark mode basics
– Data: PostgreSQL (preferred) or PostgreSQL + some MongoDB, schema design for multi-tenant SaaS, aggregations, indexing
– Infrastructure: basic AWS / cloud deployment, Docker, Git/GitHub, simple CI/CD
What you’ll actually be doing (first project – Account Health Dashboard):
– Implement backend services that ingest JSON/CSV reports from Cajari (Amazon Seller Central data extraction), normalize them, and store them in a multi-tenant database
– Design and implement database schemas for clients, seller accounts, policy violations, metrics snapshots, and workflow/work history
– Build a secure backend with role-based access (Admin, Staff, Client) and strict tenant isolation on every query
– Expose clean REST APIs for the frontend (metrics, trends, filters, pagination)
– Turn detailed dashboard designs (tables, filters, charts, badges) into reusable React components
– Implement account-health KPIs, trends, and alert logic on the backend and surface them cleanly in the UI
– Handle pagination, filtering, and sorting for large datasets (10k+ rows per account)
– Pay attention to reliability, data validation, and simple but solid error handling throughout the stack
What you’ll do next (this is ongoing work, not just one dashboard):
– Build additional monitoring dashboards for different Amazon / e-commerce data sources
– Develop client-facing reporting tools and self-service portals
– Create internal operations and case-management applications for our team
– Implement automation and workflow tools (alerts, queues, background jobs, scheduled reports)
– Help shape architecture decisions as the product suite grows over time
Requirements:
– 3–5+ years of full-stack experience with Node.js and React (Python experience is a strong plus)
– Very comfortable designing relational schemas and writing clean, efficient SQL queries (PostgreSQL strongly preferred)
– Proven experience building at least one serious dashboard or B2B SaaS product end-to-end (not just tutorials)
– Strong understanding of authentication, authorization, and multi-tenant patterns (tenant_id, RBAC, etc.)
– Ability to read existing HTML/CSS or Figma and refactor it into reusable components instead of starting from scratch every time
– Solid Git/GitHub habits, code reviews, and basic testing (unit/integration)
– Good written English and willingness to communicate clearly in async updates and short Loom walkthroughs when needed
Nice-to-have:
– Prior experience with Amazon Seller Central or other e-commerce dashboards
– Familiarity with queues/background workers and ETL/data pipelines (BullMQ, Celery, cron-based workers, etc.)
– Experience with charting libraries (Recharts, Chart.js, etc.)
– Experience deploying and operating apps on AWS or similar cloud providers
This is NOT a one-off project. We are looking for a long-term partner who can stay with us, own the codebase, and continue building additional dashboards, internal tools, and web applications after the first version ships.
When you apply, please:
– Answer the screening questions carefully
– Include links to 1–2 dashboards or SaaS apps you actually built (GitHub and/or live demos)
– Briefly confirm your weekly availability and your timezone
Apply Now
Apply Now