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Chandra Sekhar Bera
Big Data Analytics & Web Development Freelancer

Turning raw data into decisions you can act on.

I'm Chandra Sekhar Bera, the person behind ChandraTech — a Big Data Analytics professional at Software AG (Darmstadt), also working freelance as a web developer, taking on data analytics, dashboards, automation, and website builds.

Get a quote See the work
Software AGBig Data Analytics, Darmstadt
Wipro LimitedPrior: Data Analytics Associate
West Bengal, INHome base, remote-first
1,234
Projects Completed
354★★★★★
Client Reviews
4.9/5
Average Rating
Client Signal — Q3
SQL · PythonCore Stack
Kafka · SparkBig Data
Power BIDelivery
PS AV EC RK MI SJ TN +347
354 clients across data analytics & web projects
What I do

Services built around your data

From cleaning a messy spreadsheet to standing up a full analytics pipeline — pick the scope that fits.

01

Data Analytics & Reporting

Cleaning, modelling, and analysing datasets in SQL, Python, and Excel to answer a specific business question.

02

Power BI Dashboards

Interactive dashboards and regional/sales reporting views that stay accurate as new data lands.

03

Excel Automation

Formula-driven registers and workbooks — payroll, compliance, and calculation sheets built to reduce manual rework.

04

Big Data Pipelines

Ingestion and processing with Kafka, Spark, and Hadoop on AWS for larger, streaming, or batch workloads.

05

Python Scripting

Custom scripts for document processing, image/PDF handling, and repetitive-task automation.

06

Web Development

Clean, functional sites and small web tools — from landing pages to internal utilities.

Toolkit

Skills & stack

Core
PythonSQLPower BIExcel Automation
Big Data
KafkaSparkHadoopPySparkAWS
Also building
Java (in progress)Web DevelopmentPDF/Image Automation
Certifications
Deloitte — Data AnalyticsTata — Data Visualization
Selected work

Portfolio

A few projects that show how I approach a dataset — from raw numbers to a decision-ready view.

Retail Analytics

BlinkIT Grocery Sales Analysis

Sales-performance breakdown across categories and outlets to surface where revenue and inventory decisions matter most.

Case study — view on GitHub ↗
Power BI

Regional Sales Dashboard

An interactive Power BI dashboard tracking regional sales performance for faster, region-level decision-making.

Case study — view on GitHub ↗
F&B Insights

Zomato Restaurants Insights Dashboard

Restaurant-level insights dashboard exploring ratings, cuisines, and pricing patterns across listings.

Case study — view on GitHub ↗
See more projects on GitHub
Background

Experience & education

Experience

Big Data Analytics Professional
Software AG — Darmstadt, Germany
Current
Data Analytics Associate
Wipro Limited
Prior role
Freelance Data & Automation Work
Independent — Fiverr and direct clients
Ongoing

Education

M.Tech
In progress
Current
B.Tech, Computer Science & Engineering (AI/ML)
Haldia Institute of Technology (HIT)
Maulana Abul Kalam Azad University of Technology
Certifications
Deloitte & Tata — Data Analytics / Visualization
Completed
Client feedback · 354 reviews

Best reviews

A sample of the top-rated feedback from the 354 client reviews across 1,234 completed projects.

★★★★★

"Turned a messy sales spreadsheet into a Power BI dashboard our whole team actually uses. Fast turnaround and clear communication throughout."

Priya SharmaOperations Lead, Meridian Retail
★★★★★

"Automated a payroll register that used to take our team hours every month. Accurate, well-documented, and delivered ahead of schedule."

Arjun VermaFinance Manager, Novatide Logistics
★★★★★

"Solid SQL and Python work on a large customer dataset — found data quality issues we didn't know we had and fixed our reporting for good."

Emily CarterFounder, Brightleaf Analytics
Packages

Pricing

Starting points, all under ₹8,000 — final scope and price depend on data volume, page count, and turnaround.

Data & Analytics Packages

Basic
₹1,999 / project
  • Single dataset cleanup
  • Basic Excel or SQL analysis
  • 1 revision round
Choose Basic
Standard
₹4,499 / project
  • Everything in Basic
  • Interactive Power BI dashboard
  • Automation script or macro
  • 3 revision rounds
Choose Standard
Premium
₹7,999 / project
  • Everything in Standard
  • Big data pipeline (Kafka/Spark)
  • Ongoing support / retainer
  • Unlimited revisions
Get in touch

Website Development Packages

Landing Page
₹1,999 / project
  • Single-page responsive site
  • Contact form
  • 1 revision round
Choose Landing Page
Business Website
₹4,999 / project
  • Up to 5 pages
  • Contact form + basic SEO
  • Mobile-responsive design
  • 3 revision rounds
Choose Business Site
Custom Website
₹7,999 / project
  • Up to 10 pages
  • Custom design + integrations
  • Booking, payments, or admin panel
  • Unlimited revisions
Choose Custom Site
For business clients

Need a website for your business?

Fill this in with a few details about your business and what you need — I'll come back with scope, timeline, and a quote.

You'll get a reply by email within 1–2 business days.
Let's talk

Start a project

Send a few details about the data or problem you're working with — I'll reply with scope and timeline.

@
☎
WhatsApp / Phone+91 89189 76040
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Based inWest Bengal, India · working from Darmstadt, Germany