Derived from 1 submission for ALL. Format details may vary across different teams or locations.
{"overview": "DeliveryHero\u2019s hiring process for engineering roles emphasizes a rigorous technical evaluation, particularly for senior positions where Go-specific algorithmic and system design questions are prominent. Candidates often report a higher difficulty in later rounds, especially when tackling language-specific nuances (e.g., pointers, channels in Go) and scalable system design problems. Rejection trends suggest strong emphasis on practical problem-solving and architectural trade-offs.", "by_role": {"SDE-3 / Senior": "# DeliveryHero - SDE-3 / Senior Golang Engineer Interview Briefing\n\n## Overview\nDeliveryHero\u2019s interview process for Senior Golang Engineers is highly technical, with a strong focus on Go-specific concepts, scalable system design, and practical problem-solving. The process consists of four technical rounds, each lasting 1 hour, and candidates are often rejected in the final rounds due to challenges in Go-specific algorithmic questions or trade-off discussions in system design.\n\n---\n\n## Round Breakdown & Exact Questions\n\n### Round 1: Technical Zoom Screen (Easy Algorithm + Behavioral + Architecture)\nFocus: Behavioral questions, current project architecture, and an easy LeetCode-style problem.\nQuestions Asked:\n1. Number of steps needed to dial a number from 000 on a briefcase lock (easy LeetCode problem).\n\n\n### Round 2: Technical Zoom Screen (System Design + Data Structures)\nFocus: Designing a small-scale e-commerce system with an emphasis on the ordering application, and designing a data structure to find the median in a stream of numbers.\nQuestions Asked:\n1. Design a small-scale e-commerce system (focus on the ordering application).\n2. Design a data structure to find the median in a stream of numbers.\n3. Optimize the data structure based on the frequency of put, get, and getMedian operations.\n\n\n### Round 3: Technical Zoom Screen (Go-Specific Concepts + Trade-offs)\nFocus: Deep dive into Go vs. Java comparisons, pointers, channels, and microservices vs. monolith trade-offs.\nQuestions Asked:\n1. Go vs. Java comparisons (e.g., performance, garbage collection, concurrency models).\n2. Two output-based problems on pointers in Go (e.g., correcting pointer misuse, memory leaks).\n3. Output-based problem on Go channels (e.g., correcting channel usage for desired output).\n4. Microservices vs. monolith (e.g., when to use each, trade-offs in scalability and maintainability).\n\n\n### Round 4: Technical Zoom Screen (Go-Specific Implementation + Metrics)\nFocus: Go-specific implementation, monitoring metrics, and advanced system design patterns.\nQuestions Asked:\n1. Metrics for monitoring an application (e.g., latency, throughput, error rates).\n2. Different microservice design patterns (e.g., saga, CQRS, event sourcing).\n3. Sort an array in fragments of k using Go (e.g., implementing a custom sorting algorithm with constraints).\n\n---\n\n## Key Takeaways for Candidates\n- Go expertise is critical: Expect deep dives into Go-specific features like pointers, channels, and concurrency models.\n- System design is non-negotiable: Focus on designing scalable systems, especially for e-commerce use cases.\n- Trade-off discussions matter: Be prepared to justify architectural decisions (e.g., microservices vs. monolith, monitoring strategies)."}}
The candidate participated in four technical rounds for the Senior Golang Engineer role at DeliveryHero. They were rejected after the final round, likely due to challenges with Go-specific algorithm questions, despite finding the interview easier than others. The candidate felt they performed well in the earlier rounds.
A 1-hour technical screen focusing on behavioral questions, current project architecture discussion, and an easy LeetCode problem about calculating the number of steps needed to dial a number from 000 on a briefcase lock.
Number of steps needed to dial a number from 000 on a briefcase lock (easy LeetCode problem)
A 1-hour technical screen focused on designing a small-scale e-commerce system with an emphasis on the ordering application. Additionally, the candidate was asked to design a data structure to find the median in a stream of numbers and explain how to optimize it based on the frequency of put, get, and getMedian operations.
Design a small-scale e-commerce system focusing on the ordering application, design a data structure to find the median in a stream of numbers, and optimize the data structure based on the frequency of put, get, and getMedian operations
A 1-hour technical screen focused on Go vs. Java comparisons, two output-based problems on pointers in Go, an output-based problem on Go channels and how to correct it for desired output, and questions on microservices vs. monolith.
Questions around Go vs. Java
Two output-based problems on pointers in Go
Output-based problem on Go channels and how to correct it for desired output
Questions on microservices vs. monolith
A 1-hour technical screen focused on metrics for monitoring an application, different microservice design patterns, and sorting an array in fragments of k using Go.
Metrics for monitoring an application
Different microservice design patterns
Sort an array in fragments of k using Go
InterviewDigest