Papu Singh deo

Senior Analyst

Can take a messy dataset and turn it into an answer somebody can act on.

Practicing since September 20268-day streak

Points

2,825

Questions solved

89

Projects finished

2

Longest streak

8 days

Badges

• First question
• 10 questions
• 25 questions
• 50 questions
• 3-day streak
• 7-day streak
• First project

Skills

Skill map

Every topic in the question bank, and how much of each one Papu has worked through.

• Query foundations

  Working on it · 43 of 69

  Reading a table and asking it a straight question.

  • Dates11/16
  • Conditional logic11/12
  • Strings0/11
  • Calculations5/10
  • NULL handling6/9
  • Filtering6/7
  • Logical operators4/4

• Combining data

  Learning · 16 of 36

  Putting tables together without losing or duplicating rows.

  • Joins10/15
  • Reshaping1/15
  • Subqueries5/5
  • Deduplication0/1

• Aggregation and windows

  Learning · 30 of 71

  Summarizing, ranking and comparing rows against their group.

  • Window functions18/32
  • Ranking0/15
  • Aggregations9/14
  • Running totals3/10

• Python foundations

  Not started · 0 of 21

  The data structures every Python interview leans on.

  • Arrays0/6
  • Lists0/5
  • Tuples0/3
  • Dictionaries0/3
  • Math0/3
  • Sorting0/1

• Algorithms

  Not started · 0 of 17

  The patterns behind the timed screening rounds.

  • Hashing0/8
  • Two pointers0/4
  • Binary search0/4
  • Sliding window0/1

Certificates

• Senior Analyst

  Earned Oct 16, 2026

  Open certificate

• Analyst

  Earned Oct 14, 2026

  Open certificate

• Junior Analyst

  Earned Sep 22, 2026

  Open certificate

Projects

• Robinhood · Data Analytics Project · easyMarketing Channel Performance

  Compare six months of ad spend against signups and paying customers, then recommend where the next budget should go.

  Project pageCode
• Etsy · Data Science Project · hardCheckout Redesign A/B Test

  Analyze a four-week checkout experiment, deal with messy tracking, and decide whether the redesign should launch.

  Project pageCode