RoadmapGridList

Coding

Topicfoundations firstEasyMediumHard
Foundations
Arrays and strings
Bits and math
SQL
Level 2
Data and ML code
Front-end code
Secure coding
Searching and sorting
Designing data structures
Backtracking and games
Correctness review
Level 3
Performance review
Error handling
Security review
Graphs and trees
Concurrency
Level 4
Backend internals
Dynamic programming
Level 5
Observability
Level 6
Capacity and traffic
Dependencies and deploys
Databases in production
Level 7
Incident response
Foundations
Arrays and stringsEasyMediumHardBits and mathEasyMediumHardSQLEasyMediumHard
Level 2
Data and ML codeEasyMediumHardFront-end codeEasyMediumHardSecure codingEasyMediumHardSearching and sortingEasyMediumHardDesigning data structuresEasyMediumHardBacktracking and gamesEasyMediumHardCorrectness reviewEasyMediumHard
Level 3
Performance reviewEasyMediumHardError handlingEasyMediumHardSecurity reviewEasyMediumHardGraphs and treesEasyMediumHardConcurrencyEasyMediumHard
Level 4
Backend internalsEasyMediumHardDynamic programmingEasyMediumHard
Level 5
ObservabilityEasyMediumHard
Level 6
Capacity and trafficEasyMediumHardDependencies and deploysEasyMediumHardDatabases in productionEasyMediumHard
Level 7
Incident responseEasyMediumHard