1.今日头条：支持头条所有直播短视频业务，包含火山直播/小视频、抖音、内涵段子、IES基础架构等，技术200人左右。PS：需要有高并发大流量的系统设计经验。
高级后端研发工程师
职位描述：
1、负责今日头条财经业务的后台业务研发；
2、负责在线大流量高并发系统设计；
3、熟悉python、go、java，c++中两个以上研发语言；
职位要求：
1、本科及以上学历，计算机、通信等相关专业；
3、深刻理解计算机原理，有良好的数据结构和算法基础；
4、熟悉Mysql、Nosql、消息队列等常用WEB组件；
5、有高并发服务设计和实现经验优先；
地点：海淀区北三环西路43号中航广场矮楼（地铁站：10号和13号线知春路；4号线人民大学）
2.快手：Java体系的公司，服务端有五个大组，70人左右。1. 对外的服务器后台，（点击，直播，后台的支撑）：要求高并发，架构能力、高负载；2. 内部审核系统；3. 商业化组（广告系统，对内对外的跨部门系统对接）；4. 海外组（要求全栈，前端，后台，数据）；5. 工程验证组（算法实现）
java开发工程师-服务器后台组
工作职责：
1.负责短视频社区后台业务的设计、研发工作-负责后台分布式存储、分布式计算以及中间件等系统的开发。
【职位要求】
1. 一年以上的Java开发经验，扎实的编程功底，熟悉常用的数据结构和算法
2.有一定的OO Design能力，熟悉多线程编程- 熟悉数据库概念和技术，熟悉MySQL及一些NoSQL技术
3.掌握Linux常用命令-有较强的学习能力和 解决问题的能力，对代码质量有精益求精的偏执
广告系统研发工程师(Java)：J10015 商业化
工作职责
1、负责高性能广告交易平台的设计、研发及持续优化；
2、负责广告营销平台后端、结算系统和DMP系统开发及持续优化
3、与广告算法团队一起，研发和优化广告召回、排序、竞价、频率/流量控制等核心投放策略；
4、对现有系统的不足进行分析,找到目前系统的瓶颈,改进提高系统性能
5、参与解决海量商业数据分布式处理、高效查询、数据一致性、准确性等方面带来的各种技术难题和挑战。
任职资格
1.计算机或相关专业本科以上学历，具备1年以上的大型Web应用开发和架构经验；
2.熟悉linux开发环境，熟练使用Java和面向对象设计开发
3.熟悉主流Web应用相关的框架，对至少两个主流框架有深入理解
4.对设计模式、软件工程等有较深入的理解；
5. 熟悉大型分布式、高并发、高可用性系统设计开发；
6.了解统计模型，有机器学习，数据挖掘等相关技术工作经验的优先
7.有过大规模（千万级在线用户以上）AdExchange，DSP系统开发经验的优先
地点：海淀区五道口清华科技园启迪科技大厦（13号线五道口）
3.摩拜：产品研发组支持的业务包括：广告，搜索，推荐，支付，结算，物流等业务系统的纯后台开发。PS：有相关经验较佳，得需要熟悉数据结构和算法设计。
Java开发 产品研发组
岗位职责：
1.负责APP SERVER中间层等模块开发
2.完成各类需求开发任务，同时保证服务稳定性、茁壮型
岗位要求：
1.精通Java语言，熟悉数据结构和算法设计，熟悉JAVA三大框架中的一种；
2.对REST WEB SERVICE有一定的了解；
3.熟悉常见的分布式应用场景，对缓存、队列、搜索等有一定的了解；
地点：朝阳区麦子店街53号曼宁国际中心（10号线亮马桥）
4.Airbnb：3年工作经验及以上，会卡学校，得需要熟悉数据结构和算法设计。
Software Engineer, Full Stack 全栈工程师
About The Team
In China, international travel spend is already greater than the US and growing much more quickly. China is an important part of our Airbnb global community and the travel network we have built globally has positioned us to provide Chinese guests with unique travel experiences and help them belong anywhere.
We are now looking for full stack Software Engineers to join the team to help build a strong and fast feedback loop to adapt our product according to local needs. The team will improve the site/app speed and experience for Chinese users, localize the existing product to deeply integrate with local norms (e.g., allow WeChat sign in / sharing, payment with Alipay, etc.) and build new products that culturally make sense to Chinese users.
We are looking for Full Stack engineers with:
Exceptional ability to work anywhere in the technical stack, delivering quality code both on the frontend and backend.
Exceptional proficiency using HTML/CSS/Javascript, Python/Django, Ruby/Ruby on Rails. Experience with React is a plus.
Fluency in any backend server language, and expertise in relational databases and schema design.
Strong motivation to drive impact by making product improvements.
Strong analytical thinking, experienced with making product decisions based on data and A/B testing.
Proactiveness, good communication and fast learning.
Interest in working in a very cross-functional team that touches many of the core systems and user flows at Airbnb.
Working proficiency in English and Mandarin required.
地点：朝阳区东三环球金融中心（地铁10号线金台夕照）
5.亚马逊：FBA目前是亚马逊中国业务增长量最快的部门之一，针对客户是第三方卖家。为第三方卖家预测销量，处理库存等，并且会向第三方卖家收费。
DESCRIPTION
Since 1995, Amazon has focused on being “the world’s most customer centric company.” Our customers are worldwide, and include not just consumers, but also groups like our third-party Sellers. World-class retail brands and individual Sellers increase their sales and reach new customers by leveraging the power of the Amazon e-commerce platform. Over 2 million third-party Sellers offer new, used, and collectible selections to Amazon customers around the world. To meet our Sellers’ needs, our smart, diverse, customer-obsessed employees are constantly innovating and building on new ideas.
Fulfillment by Amazon (FBA) is an Amazon service for our third-party Sellers. The FBA team partners with Sellers and our Amazon Fulfillment Centers to create a seamless experience for Sellers to leverage our world-class facilities. 71% of our FBA Sellers report more than a 20% increase in unit sales after joining FBA. In a very real way, we are changing lives with the work we do. Our FBA employees wake up every day thinking about how to enable our Sellers to be successful on our platform. Enabling Seller success allows us to provide Amazon customers with unparalleled selection and pricing. FBA is a win for Sellers and a win for customers. Want to learn more about FBA?
·Seller’s success stories: SellerSuccess
·A free book of stories from small businesses/sellers, authors, and innovators that are thriving on Amazon: Transformations-ebook
The Fulfillment by Amazon team is looking for a talented software development engineer to help implement important software that virtualizes Amazon.com's world class fulfillment and customer service capabilities. We are building highly available web services, reporting systems and merchant facing workflows. As a software development engineer you will work with multiple teams and talented engineers working on systems that are global in scope. As mentioned by Jeff Bezos, Founder and CEO of Amazon.com, in his annual letter to shareholders in 2006 and again in 2008, FBA is one of the strategic long term opportunities for the company to improve the lives of sellers and buyers while leveraging our billion dollar logistics infrastructure to generate increasing free cash flow.
BASIC QUALIFICATIONS
• Bachelor’s Degree in Computer Science or related field
• Equivalent experience to a Bachelor's degree based on 3 years of work experience for every 1 year of education
• 4+ years professional experience in software development
• Computer Science fundamentals in object-oriented design
• Computer Science fundamentals in data structures
• Computer Science fundamentals in algorithm design, problem solving, and complexity analysis
• Proficiency in, at least, one modern programming language such as C, C++, C#, Java, or Perl
PREFERRED QUALIFICATIONS
• Experience taking a leading role in building complex software systems that have been successfully delivered to customers
• Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
• Experience with distributed computing and enterprise-wide systems
• Experience in communicating with users, other technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy
• Experience mentoring junior software engineers to improve their skills, and make them more effective, product software engineers
• Experience influencing software engineers best practices within your team
• Hands-on expertise in many disparate technologies, typically ranging from front-end user interfaces through to back-end systems and all points in between
地点：朝阳区东四环中路56号 远洋国际中心A座（1号线四惠慈云寺）
6.Freewheel：是一家做网络视频广告投放的公司，为大型媒体公司和互联网视频网站提供视频广告管理系统与增值服务，80%美国主流电视媒体和运营商的数字视频广告业务使用FW的服务，comScore排名前10的视频网站大部分是公司的客户或合作伙伴，互联网视频部分驱动全美视频广告流量的近三分之一。6亿用户，单日投放近10亿次广告，生成2TB广告投放数据。
Job TitleSr. Research Engineer-Forecasting
Job Description
FreeWheel is hiring a Beijing-based Software Engineer to Forecasting Team.
Responsibilities
Forecasting team builds, improves and maintains the high performance, high availability Forecasting service which helps FreeWheel clients gain insight into their inventory business by planning ahead, better monetizing their inventory by knowing exactly what to sell at what price.
Requirements
3+ years of experience in one or more of the following fields: data mining, deep learning, data modeling. Advertisement related is a plus
Familiar with Linux/Unix, data structure and algorithm
Familiar with one or more of the following languages: Python / C++ / Java / Scala
Familiar with Map Reduce, Spark, Tensorflow is a plus
Able to work and act in English environment including email, communication. Good oral and written English is a plus
Strong passion with learning / practicing new technics
Team working skills, Good communication skills, Willingness to work under pressure
地点：朝阳区亮马桥天泽路润世中心2号楼16F（10号线亮马桥）