walk into 21HK Cloud

job description:
1. Responsible 21HK Cloud SDN Network design and development
2. Responsible 21HK Cloud network products include SLB, high-performance gateway, Elastic IPs,VPN, firewall and other products’ underlying research and development,The goal is to make network products that are stable, easy to use, and have ultimate performance
3. Responsible for closely tracking the research and implementation of the latest forwarding technologies
4. Participate in improving network operation and maintenance efficiency and network stability,Participate in relevant quality assurance work

Job requirements:
1,familiar Python / Golang / C / Shell etc. language
2, Familiar with the architecture design of mainstream distributed systems,familiar SDN, understand the mainstream controller better
3,learn SDN/NFV Related technologies,learn openflow,NVGRE,VXLAN, network equipment and technology priority
4, Candidates with experience in cloud network R&D are preferred

job description:
1. Responsible for the architecture design and development of cloud computing backend systems
2. Responsible for calculations,storage,Development and maintenance of virtualization products
3. Responsible for closely tracking the research and implementation of the latest technologies
4. Participate in improving the operation and maintenance efficiency and stability of cloud computing platforms,Participate in relevant quality assurance work

Job requirements:
1, good programming foundation and abstraction ability,Proficient in at least one common programming language,like Python/Go wait
2, Familiar with virtualization and container related technologies,For example kvm/xen/lxc/docker wait
3, Familiarity with at least one distributed coordination service:like ZooKeeper/etcd/Consul wait
4. It is better to have strong requirements understanding ability and architecture design ability.
5, Have good ability to withstand stress

job description:
1, Participate in container platforms/Cloud platform MySQL R&D work on related database products;
2, Participate in customer database failure response, problem analysis, tracking and resolution, and subsequent optimization.

Job requirements:
1,Bachelor degree or above in computer related majors,2 More than 10 years of development experience;
2,familiar MySQL Or the basic principles, common solutions, and best practices of its related branch databases;
3, master Golang/Python at least one of the languages;
4, based on Kubernetes Candidates with development experience are preferred;
5, Applicants with development experience related to database products are preferred;
6, strong sense of responsibility,Pay attention to communication and cooperation,Have an inquiring spirit,Willing to solve problems.

job description:
1.Responsible for the design, development and maintenance of core modules of hyper-converged products.
2.Participate in the design and optimization of the storage module system architecture of hyper-converged products.

Job requirements:
1. Proficient in at least one of C, C++, or Go.
2. Proficient in common data structures and algorithm design.
3. Solid understanding of operating-system fundamentals and Linux system programming.
4. Experience designing and developing storage or distributed systems.
5. Passion for technology and a commitment to technical excellence.

priority conditions:
1. Experience using and developing SAN storage systems.
2. Experience extending open-source storage systems such as Ceph, Gluster, or HDFS.
3. Understanding of iSCSI protocol principles and Linux I/O path design.
4. Familiarity with ZooKeeper design principles and best practices.
5. TCP/RDMA network programming experience and an understanding of epoll.
6. ARM platform experience is preferred.
7. Cloud-platform, hyperconverged-infrastructure, or virtualization-platform experience is preferred.

Job responsibilities:
1.The company already has core products YsCloud Develop and implement cloud computing related projects based on,Complete project delivery;
2.Assist the development and testing team to improve core products,Improve product reliability and quality,And optimize continuous integration and continuous delivery automation processes;
3.Provide customers with product function and performance upgrades and transformations according to customer and project needs,Meet customer needs;
4.Participate in the installation, optimization and maintenance of company and customer application system environments,As well as application system backup and fault handling.

Technical requirements:
1.proficient Python or Go one of,have Shell Scripting language development experience;
2.familiar with common Centos,Redhat,Ubuntu,Debian,Windows and other operating systems,Familiar with common application environments Linux System construction(mysql,zabbix,nginx,keepalived wait);
3.Familiarity with common switch, router, and firewall configurations is preferred;
4.familiar kvm,ceph,SDN Priority will be given to related technologies;
5.Responsible,Proactive work attitude,Good collaborative communication skills and teamwork spirit;
6.Good learning ability and excellent document writing skills;
7.have 5 More than 10 years of work experience.

job description:
1.against linux server Security settings optimization and improvement;
2.against linux Server-side security vulnerability discovery and repair;
3.against linux Server security detection automation and intelligence;
4.against linux server side,KVM QEMU Vulnerability hotfixes;

Job requirements:
1.familiar C/C++Language,linux Kernel programming;
2.have CISP,CISSP Candidates waiting for certificates will be given priority;Vulnerabilities submitted to the major vulnerability platform will be given priority
3.2 Engaged in for more than 10 years NGFW,WAF,IPS, server load balancing and other related work experience;
4.proficient TCP/IP/UDP Communication protocol,Able to quickly analyze data packet anomalies;
5.Proficient in Network Security technology,Including port and service vulnerability scanning, program vulnerability analysis and detection, rights management, intrusion and attack analysis and tracking, website penetration, virus and Trojan horse prevention, etc.