The Tether Challenge involves building a cryptocurrency data pipeline using JavaScript, Hyperswarm RPC, and Hypercore. It requires fetching price data for the top 5 cryptocurrencies (against USDt) from CoinGecko, calculating the average price from the top 3 exchanges, and handling data quality issues while minimizing storage requirements. The data must be stored using Hypercore/Hyperbee databases and be accessible via Hyperswarm RPC with methods for fetching latest and historical prices. A scheduling mechanism should automate the pipeline every 30 seconds, with on-demand execution also supported. The task emphasizes functionality over completeness within a 6–8 hour timeframe.
Senior Backend Engineer Interview Questions
2,786 senior backend engineer interview questions shared by candidates
You are getting an Home assignment where you have to design and implement some kind of Repricer unit which listens on http endpoint and writes data to files every 1 second or 10 events whichever comes first
Do you know our games?
Some functions to implement such as 'toPairs' & 'fromPairs'.
They asked me to create one microservice or website similar to IMDb.com
What was the business impact of your most recent project?
Eugene Wigner, a physicist and mathematician who made important contributions to quantum theory, wrote a paper on the ‘unreasonable effectiveness of mathematics’. He stated that ‘the miracle of the appropriateness of the language of mathematics for the formulation of the laws of physics is a wonderful gift which we neither understand nor deserve’. What do you think Wigner means? Do you agree with him? Why?
Previous team coded Model A and Model B, however, there are not tons records and instances to keep track of. how would you refactor these models or create new ones to consolidate?
senerio based questions.
Design and implement a given system within one hour, focusing on core functionalities.
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