Daltonganj, Jharkhand, India
Anuj
Kumar
Data Visualization Engineer — Power BI Custom Visuals
I build custom Power BI visuals from scratch with React, D3.js and TypeScript.
01 — About
About
Data Visualization Engineer with 4+ years building production-grade custom Power BI visuals in React, D3.js and TypeScript. I've delivered 7+ marketplace-deployed visuals — several earning “Editor’s Choice” — used by enterprise customers in Microsoft Power BI, and independently led custom-visual development across multiple client projects.
02 — Power BI Custom Visuals
Power BI Custom Visuals
Each card renders a live, interactive miniature of the real visual — hover the matrix rows and the network nodes.
Power Table
- Problem
- Native Power BI tables/matrices can't render rich per-cell charts for dense, configurable reporting.
- Built
- Excel-style matrix visual in React + D3 supporting multiple in-cell mini-charts (bar, pie, bullet, sparkline, gauge) across rows and columns.
- Impact
- Reused across multiple client reports for compact, information-dense dashboards.
Network Graph (nodes & links)
- Problem
- Relationship/flow data needed an interactive node-link visual not available natively.
- Built
- Force-directed D3 graph with interactive nodes, links, selection and cross-filtering via the Power BI Visuals API.
- Impact
- Earned “Editor’s Choice” recognition in the marketplace.
Sankey Chart
- Problem
- Flow/proportion analysis across stages needed a custom Sankey.
- Built
- D3 Sankey layout with custom formatting pane, tooltips and cross-filtering.
- Impact
- Deployed to production for enterprise customers.
Activity & Linear Gauges
- Problem
- Branded, configurable KPI and proportion visuals.
- Built
- Performance-focused gauge visuals with full formatting model and selection support.
- Impact
- Part of a 7+ visual suite used in Microsoft Power BI.
03 — Interactive Demos
Interactive Demos
Live, data-driven builds of my flagship visuals. Open one in a new tab — each loads with sample data you can resize from simple to complex, or drop in your own CSV and watch it adapt. Then download a generated report. Zero chart libraries; the layout maths is hand-rolled.
04 — Skills
Skills
Proficiency mapped per domain — the niche (Power BI custom visuals + D3) leads.
Power BI Custom Visuals
01Data Visualization
02Frontend
03Tooling
0405 — Experience
Experience
Frontend Developer — Power BI Custom Visuals · Truviz Pvt. Ltd. (Remote)
May 2023 – Jun 2026- Engineered and delivered 7+ custom Power BI visuals deployed to production and used by customers within Microsoft Power BI environments.
- Built performance-focused analytics components; multiple visuals received “Editor’s Choice” in the Power BI custom visuals marketplace.
- Designed an Excel-style “Power Table” matrix visual with multiple in-cell chart types.
- Independently led custom-visual development the last year — new features, usability, on-time delivery across multiple team projects.
Frontend Developer · Pinchforth (Remote)
Jun 2021 – Jan 2023- Built interactive data visualizations with D3.js and ReactJS.
- Developed complex front-end interfaces in React and Sass.
- Shopify theme customization; WordPress development; GTM/GA4 analytics.
06 — Writing
Writing
Notes, news and practical tips on Power BI custom visuals, D3 and data visualization engineering.
07 — Contact
Let's build something
worth visualizing.
Open to full-time roles and freelance Power BI custom-visual work.