京东后端开发工程师
社招全职5年以上软件开发岗地点：北京状态：招聘
任职要求
1.本科及以上学历，五年以上后端开发经验，有酒旅行业经验者优先； 2.扎实的计算机基础，拥有良好的编码习惯和素养，善于总结和思考，保持技术热情； 3.精通Java技术，熟练掌握JVM原理和机制，可排查和优化GC问题，具备一定的JVM性能调优经验； 4.熟练使用Java相关框架和工具并熟悉其原理，熟练使用各类中间件和数据库； 5.熟练掌握数据结构和算法、网络、操作系统等计算机基础知识； 6.深刻理解构建高可用、高并发、高可扩展系统的方法论，具备丰富的分布式系统架构设计经验，可处理复杂的业务和技术场景； 7.良好的沟通理解能力和团队合作精神，能独立承担和推动工作，具备主人翁意识和强大自驱力，能够与多部门良好协作并推动项目落地； 8.良好的业务抽象能力、学习能力和执行力，善于发现问题和挑战现状，对系统设计和质量有严苛的追求。 符合京东价值观：客户为先、创新、拼搏、担当、感恩、诚信。
工作职责
1.负责京东酒旅业务后端系统的架构设计、开发、确保系统的高性能、高可用与高度可扩展性，保障产品需求交付、系统稳定运行； 2.参与软件架构设计与讨论，构建行业报价数据库，保障报价信息完整性和及时性，对接行业供给提高产品丰富度，保障用户体验一致性，对齐行业先进的业务模型和技术能力； 3.深入理解相关业务需求和发展方向，采用适合的方案实现业务功能，保障新功能持续迭代； 4.持续跟进并解决系统运行中的技术问题，对性能瓶颈进行分析和优化，对技术风险进行预防和治理，保障系统稳定运行； 5.主导或参与跨团队技术方案沟通和设计，推动跨团队需求合作。
包括英文材料
学历+
后端开发+
https://www.youtube.com/watch?v=tN6oJu2DqCM&list=PLWKjhJtqVAbn21gs5UnLhCQ82f923WCgM
Learn what technologies you should learn first to become a back end web developer.
编程规范+
[英文] Google Style Guides
https://google.github.io/styleguide/
Every major open-source project has its own style guide: a set of conventions (sometimes arbitrary) about how to write code for that project. It is much easier to understand a large codebase when all the code in it is in a consistent style.
Java+
https://www.youtube.com/watch?v=eIrMbAQSU34
Master Java – a must-have language for software development, Android apps, and more! ☕️ This beginner-friendly course takes you from basics to real coding skills.
JVM+
https://www.freecodecamp.org/news/jvm-tutorial-java-virtual-machine-architecture-explained-for-beginners/
https://www.youtube.com/watch?v=e2zmmkc5xI0
GC+
[英文] Garbage Collection
https://craftinginterpreters.com/garbage-collection.html
The GC doesn’t throw away the memory, it reclaims it to be reused for new data.
https://learn.microsoft.com/en-us/dotnet/standard/garbage-collection/fundamentals
In the common language runtime (CLR), the garbage collector (GC) serves as an automatic memory manager.
https://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html
This tutorial covers the basics of how Garbage Collection works with the Hotspot JVM.
https://www.youtube.com/watch?v=c32zXYAK7CI
How does memory management work? In C you had to manage things yourself, but modern languages take care of a lot of it for you.
性能调优+
https://goperf.dev/
The Go App Optimization Guide is a series of in-depth, technical articles for developers who want to get more performance out of their Go code without relying on guesswork or cargo cult patterns.
https://web.dev/learn/performance
This course is designed for those new to web performance, a vital aspect of the user experience.
https://www.ibm.com/think/insights/application-performance-optimization
Application performance is not just a simple concern for most organizations; it’s a critical factor in their business’s success.
https://www.oreilly.com/library/view/optimizing-java/9781492039259/
Performance tuning is an experimental science, but that doesn’t mean engineers should resort to guesswork and folklore to get the job done.
中间件+
https://www.youtube.com/watch?v=1oWPUpMheGk
数据结构+
https://www.youtube.com/watch?v=8hly31xKli0
In this course you will learn about algorithms and data structures, two of the fundamental topics in computer science.
https://www.youtube.com/watch?v=B31LgI4Y4DQ
Learn about data structures in this comprehensive course. We will be implementing these data structures in C or C++.
https://www.youtube.com/watch?v=CBYHwZcbD-s
Data Structures and Algorithms full course tutorial java
算法+
https://roadmap.sh/datastructures-and-algorithms
Step by step guide to learn Data Structures and Algorithms in 2025
https://www.hellointerview.com/learn/code
A visual guide to the most important patterns and approaches for the coding interview.
https://www.w3schools.com/dsa/
高可用+
https://redis.io/blog/high-availability-architecture/
A high available architecture is when there are a number of different components, modules, or services that work together to maintain optimal performance, irrespective of peak-time loads.
https://www.ibm.com/think/topics/high-availability
High availability (HA) is a term that refers to a system’s ability to be accessible and reliable close to 100% of the time.
高并发+
https://www.baeldung.com/concurrency-principles-patterns
In this tutorial, we’ll discuss some of the design principles and patterns that have been established over time to build highly concurrent applications.
https://www.baeldung.com/java-concurrency
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
https://www.oreilly.com/library/view/concurrency-in-go/9781491941294/
You’ll understand how Go chooses to model concurrency, what issues arise from this model, and how you can compose primitives within this model to solve problems.
https://www.oreilly.com/library/view/modern-concurrency-in/9781098165406/
With this book, you'll explore the transformative world of Java 21's key feature: virtual threads.
https://www.youtube.com/watch?v=qyM8Pi1KiiM
https://www.youtube.com/watch?v=wEsPL50Uiyo
分布式系统+
https://www.distributedsystemscourse.com/
The home page of a free online class in distributed systems.
https://www.youtube.com/watch?v=7VbL89mKK3M&list=PLOE1GTZ5ouRPbpTnrZ3Wqjamfwn_Q5Y9A
系统设计+
https://roadmap.sh/system-design
Everything you need to know about designing large scale systems.
https://www.youtube.com/watch?v=F2FmTdLtb_4
This complete system design tutorial covers scalability, reliability, data handling, and high-level architecture with clear explanations, real-world examples, and practical strategies.
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