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CASE STUDYOTHER · SCOPE3 CARBON ACCOUNTING PLATFORM

Fitsol

An ESG and logistics SaaS tracking Scope 1, 2 and 3 carbon emissions, with freight shipment tracking, government API verification, analytics dashboards and ESG assessments.

33Weeks operated
2k+Hours of work
2Engineers

The brief

Extend and revamp an existing CRA-based ESG emission tracking product (Fitsol/Kyoto platform) by migrating to Next.js, building out full Scope 1/2/3 category forms, adding a logistics management layer (indent/shipment/tracking), integrating Indian government APIs (ULIP, GST OCR), and layering analytics and ESG assessment modules — all within a 33-week engagement with 2 developers.

What we built

Fitsol is a full-stack ESG and logistics SaaS platform built on Next.js (migrated from CRA) + Node.js/MongoDB. It covers:

  • Multi-scope carbon emission tracking with dynamic category forms and Climatiq/Factors API integration
  • CSV and PDF ETL bulk data ingestion pipelines with job orchestration
  • Freight indent-to-shipment lifecycle with real-time GPS tracking, Bilti/POD document vault, and mobile views
  • Facility/asset/vehicle org structure with GST OCR and ULIP API verification
  • Multi-scope analytics dashboards (Sankey, heatmap, intensity metrics, grouped/stacked bar)
  • ESG questionnaire assessment engine with nested question rendering and auto-save
  • Multi-role partner/user management with RBAC and unification onboarding; and
  • A public marketing website. The platform targets Indian logistics and manufacturing companies managing Scope 3 supply-chain emissions alongside day-to-day freight operations.
⊛ Live in production

Scope 1 & 2 category forms and analytics deployed to production. Transportation ETL (CSV/PDF) live. Indent-to-shipment logistics flow live with GPS tracking and document vault. ESG assessment creation, assignment, and submission live. Marketing website Phase 1 deployed. Partner/user management and unification onboarding released. RBAC API design in final stages at project close.

How it was built, phase by phase.

8 workstreams across 33 weeks of operated delivery

  1. (001)BUILDWeeks 1–18 (Mar 2025 – Jul 2025)

    Carbon Emission Tracking – Scope 1, 2 & 3

    End-to-end carbon emission data entry, calculation, and reporting covering all three GHG Protocol scopes.

    ✓ Multi-scope GHG emission platform live with dynamic category forms, ETL ingestion pipelines, and per-scope analytics.

    ReactNext.jsClimatiq/Factors APIZodCSV ETLPDF ETL
  2. (002)INTEGRATEWeeks 2–8 (Mar–Apr 2025)

    CRA-to-Next.js Micro-Frontend Migration

    Incremental migration of a legacy Create React App to Next.js using Module Federation and Zustand for shared global state.

    ✓ Incremental CRA-to-Next.js migration live with shared global state via Zustand.

    Create React AppNext.jsWebpack Module FederationViteZustandReact
  3. (003)BUILDWeeks 5–33 (Apr–Oct 2025)

    Partner & User Management with RBAC

    Multi-role platform covering admin, client, partner, and transporter roles.

    ✓ Multi-role partner/user management with approval workflows live; RBAC API design underway at project end with role-specific navigation deployed.

    ReactNext.jsREST APIsZodZustandCRA
  4. (004)BUILDWeeks 6–12 (Apr–May 2025)

    Organization Structure & Facility Management

    Dynamic org structure with role-based facilities, assets, and vehicles.

    ✓ Centralised facility onboarding with GST OCR + ULIP government API verification live; full asset/vehicle CRUD with export and filter.

    ReactNext.jsGoogle Places APIGST OCR APIULIP APIZod
  5. (005)BUILDWeeks 12–22 (May–Aug 2025)

    ETL Pipeline for Bulk Carbon Data Ingestion (CSV & PDF)

    Built upload vault, job orchestration UI, polling-based job status, and ETL flows for CSV and PDF bulk emission data ingestion.

    ✓ Full ETL pipeline live for CSV and PDF uploads across transportation, waste, business travel.

    ReactNext.jsCSV parsingPDF parsingREST APIsReact Query
  6. (006)BUILDWeeks 14–22 (Jun–Aug 2025)

    Analytics Dashboards – Multi-Scope Emission Intelligence

    Built comprehensive analytics layers across all Scope 3 categories including intensity metrics, heatmap (percentile-based), Sankey charts, stacked bar charts, grouped bar charts, pie charts, and line charts.

    ✓ Full analytics suite live across Scope 1/2/3 with Sankey, heatmap, stacked/grouped bar, pie, and line charts.

    ReactNext.jsSankey chartD3/chart librariesReact QueryMoment.js
  7. (007)BUILDWeeks 20–33 (Jul–Oct 2025)

    Logistics & Transportation Management (Indent & Shipment)

    Full indent lifecycle management (create, accept, reject, vehicle placement, shipment creation, tracking, completion) with role-based access, driver management, document vault (eway bill, POD, Bilti).

    ✓ Full freight indent-to-shipment lifecycle live with real-time GPS map tracking, Bilti/POD document generation, mobile views.

    ReactNext.jsGoogle Maps APIReact QueryMoment.jsreact-day-picker
  8. (008)BUILDWeeks 26–32 (Aug–Sep 2025)

    ESG Assessment Module

    End-to-end ESG questionnaire framework with dynamic/nested question rendering, auto-save, save-progress, user creation/assignment, partner section management, question mapping flow, and final submission API.

    ✓ ESG assessment creation, assignment, nested question rendering, auto-save, and submission flow deployed; partner section and user assignment live.

    ReactNext.jsREST APIsReact QueryZod

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