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Contests Held
12k+
Total Participants
Weekly
Regular Schedule
$2k+
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Active contests
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Upcoming
🥇 $200 + CertificationBi-Weekly Challenge #12
System design: real-time event pipeline at scale.
System Design
Kafka
RedisHard
KafkaRedisHard3 challenges
120 min
Register →
Upcoming
🥇 $100 + Pro MonthSQL Masters Challenge
Advanced SQL: recursive CTEs, window functions & query optimisation.
SQLEasy5 challenges
60 min
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Archive
Past contests
Ended
🏆 1st: Arjun M.Weekly Contest #47
Scala typeclasses, rate limiting & data validation.
ScalaSystem Design
PythonHard4 challenges
90 min
1,892 participants
Ended
🏆 1st: Priya K.Weekly Contest #46
ETL pipelines, consumer lag & running totals.
SparkKafkaSQLEasy4 challenges
90 min
2,104 participants
Ended
🏆 1st: Vikram N.Weekly Contest #45
Data quality suites, AQE tuning & typeclass impl.
PythonSparkScalaMedium4 challenges
90 min
1,756 participants
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