Full-Stack Web Developer — SaaS Dashboard & Reporting Platform (Ongoing)

We are looking for a strong full-stack developer to join us on an ongoing basis to help build out a significant set of v2.0 features. Work is well-documented — you will receive a detailed feature-by-feature specification for each task, including implementation guidance, testing criteria, and clear placeholders where we will walk you through platform-specific details before you begin. What You'll Be Building KPI dashboards with color-coded threshold alerts and benchmark overlays Drag-and-drop column reordering in composite report views Excel/CSV export functionality for financial reports API integrations with QuickBooks, BusinessWorks (Sage), and NXIVS What-if scenario analysis tools In-platform file sharing per group Trend lines and forecasting functions on charts An aggregated super-admin dashboard with benchmark generation logic Data migration and group structure corrections in the existing platform What We're Looking For 3+ years full-stack web development experience Strong experience building SaaS dashboards or data/reporting tools Experience with charting or data visualization libraries (Chart.js, Recharts, D3, or similar) Experience building and consuming REST APIs, including OAuth-based integrations Solid English communication — you'll be working from written specs and need to ask good questions Ability to work independently and flag blockers early rather than going silent Nice to Have Experience with QuickBooks or other accounting software APIs Familiarity with financial or business intelligence reporting tools Previous work on multi-tenant SaaS platforms Engagement Details Type: Hourly, ongoing Location preference: South America or Ukraine strongly preferred