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Serhii S., Senior DevOps/SysOps Engineer

Vinnitsa, Ukraine
Last Updated: 4 Jul 2023
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- 15 years of practical experience in system administration - Expertise with focus on administering, monitoring, and maintaining complex deployments, securing large-scale infrastructures, building CI/CD pipelines, supporting networks, and servers, and dealing with high load workloads. - Upper-Intermediate English - Available ASAP

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DevOps

Google Cloud Platform (GCP)

Google Cloud Platform (GCP)   4 yr.

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Rolan A., ML/Computer Vision

Ukraine
Last Updated: 9 Aug 2023

- More than 10 years’ experience of software development - Data science skills. Computer Vision, multiple view geometry, camera calibration, LIDAR, object detection, semantic segmentation, instance segmentation, time series, dynamic programming - Software Engineering skills. Experience of IoT (Internet of Things) and Embedded development - Solution-oriented scientist focused on R&D and product delivery with 9 years of experience on the outsource domain - Accustomed to self-education and independent problem solution - My inspiration is exiting by challengeable and reasonable engineering tasks. Pitching skills from years of conferences attendance and strong understanding of business needs are my strengths - Intermediate English. - Availability starting from ASAP

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Python

Python

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Alexander S., DevOps Engineer

Ukraine
Last Updated: 4 Jul 2023

- 7+ years of experience in IT - Azure (Virtual machine, blob storage) setup and configuration - DevOps Engineer with exemplary expertise in routine application, maintenance tasks, including troubleshooting and testing - Azure (Virtual machine, SQL servers, Blob storage, static web apps, application gateway) setup and configuration - CI/CD (Azure DevOps) setup and configuration - Intermediate English - Intermediate French - Available ASAP

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DevOps

DevOps

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Yehor Sh., Java Software Engineer

Poland
Last Updated: 4 Jul 2023

- 5 years of experience in the IT industry working with Java; - Experience working with banking and financial projects, fintech sphere; - Good abilities with SQL, MySQL, PostgreSQL, and RabbitMQ; - Experience with AWS and Google API; - Good knowledge of C++ and JavaScript; - Good abilities working with PayPal API; - Deep skills working with Docker; - Have experience in programming Spring Framework; - Practice with Elasticsearch (Kibana); - Upper-Intermediate English.

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Java

Java

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Yehor Sh., Java Engineer

Kyiv, Ukraine
Last Updated: 15 Aug 2023

- Have experience in programming Spring Framework. - Have experience with Microservices architecture. - Practice with Elasticsearch (Kibana); - Experience in the fintech sphere; - Understanding of “Clean code”; - Good logical thinking, self-learning, high level of responsibility. - Responsible, hard-working, result-oriented, creative, and communicative, team player. - Intermediate English. - Availability starting from Asap

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Java

Java

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FAQs about TCP/IP Development

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How are Upstaff TCP/IP developers different? Arrow

AI tools and expert human reviewers in the vetting process are combined with a track record and historically collected feedback from clients and teammates. On average, we save over 50 hours for client teams in interviewing TCP/IP candidates for each job position. We are fueled by a passion for technical expertise, drawn from our deep understanding of the industry.

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Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched TCP/IP Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new TCP/IP developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

How does Upstaff vet remote TCP/IP engineers? Arrow

Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present TCP/IP candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

Hard skills of a TCP/IP Developer

As a TCP/IP Developer, having a strong set of hard skills is crucial for success in the field. These skills enable professionals to effectively design, implement, and troubleshoot TCP/IP networks, ensuring smooth and efficient communication between devices. Here are the hard skills required for TCP/IP Developers at different levels:

Junior

  • Network Protocols: In-depth understanding of TCP/IP protocols, such as TCP, IP, UDP, ICMP, and ARP, including their functionalities and interactions.
  • Network Configuration: Ability to configure and troubleshoot network devices, such as routers, switches, and firewalls, to ensure proper TCP/IP connectivity.
  • Packet Analysis: Proficiency in using packet analysis tools like Wireshark to capture, analyze, and interpret network traffic for debugging and performance optimization.
  • IP Addressing and Subnetting: Knowledge of IP addressing schemes, subnetting, and CIDR notation to efficiently allocate and manage IP addresses within a network.
  • Network Security: Understanding of network security principles, including encryption, authentication, access control, and firewall configurations, to protect TCP/IP networks from threats.

Middle

  • Routing Protocols: Familiarity with dynamic routing protocols like OSPF and BGP, including their configuration and troubleshooting, to enable efficient routing in complex networks.
  • Network Monitoring: Proficiency in using network monitoring tools, such as Nagios or Zabbix, to monitor network performance, identify bottlenecks, and ensure high availability.
  • Load Balancing: Knowledge of load balancing techniques and technologies, such as DNS round-robin, L4/L7 load balancers, and global server load balancing (GSLB), to distribute network traffic effectively.
  • Quality of Service (QoS): Understanding of QoS mechanisms, like traffic prioritization, bandwidth allocation, and traffic shaping, to optimize network performance and ensure service quality.
  • Virtual Private Networks (VPNs): Experience in configuring and managing VPN technologies, such as IPsec, SSL/TLS, and VPN concentrators, to provide secure remote access and site-to-site connectivity.
  • Network Troubleshooting: Proficient in troubleshooting network issues using various command-line utilities, diagnostic tools, and log analysis to identify and resolve connectivity problems.
  • Network Design: Ability to design and implement TCP/IP networks, considering factors like scalability, redundancy, security, and performance, to meet business requirements.

Senior

  • Network Automation: Proficiency in network automation using scripting languages like Python or Ansible to streamline network operations, configuration management, and provisioning.
  • Software-Defined Networking (SDN): Knowledge of SDN concepts, such as OpenFlow, SDN controllers, and network virtualization, to implement programmable and agile networks.
  • Cloud Networking: Experience in designing and managing TCP/IP networks in cloud environments like AWS, Azure, or Google Cloud Platform, including VPCs, VPNs, and security groups.
  • Network Architecture: Expertise in designing enterprise-level network architectures, including campus networks, data center networks, and WAN connectivity.
  • Network Performance Optimization: Ability to analyze network performance metrics, identify bottlenecks, and implement optimizations like traffic engineering and caching.
  • Certifications: Possession of industry certifications such as CCNA, CCNP, JNCIA, or JNCIP, demonstrating advanced knowledge and expertise in TCP/IP networking.
  • Team Leadership: Experience in leading network engineering teams, providing technical guidance, mentoring junior members, and coordinating network projects.

Expert/Team Lead

  • Network Security Architecture: Expertise in designing and implementing robust network security architectures, including next-generation firewalls, intrusion detection/prevention systems, and secure access controls.
  • High Availability: Proficiency in implementing high availability features like VRRP, HSRP, or GLBP to ensure network resilience and minimize downtime.
  • Network Virtualization: Knowledge of network virtualization technologies like VXLAN or NVGRE, along with virtual switches and overlay networks, to enable efficient multi-tenant environments.
  • IPv6 Implementation: Experience in planning and implementing IPv6 networks, including addressing, migration strategies, and coexistence with IPv4.
  • Network Auditing and Compliance: Understanding of network auditing processes, compliance frameworks (e.g., PCI DSS, HIPAA), and security best practices to ensure regulatory compliance.
  • Incident Response: Ability to lead incident response efforts during network security breaches, including containment, eradication, and recovery procedures.
  • Vendor Management: Experience in managing relationships with network equipment vendors, evaluating new technologies, and conducting proof-of-concept evaluations.
  • Business Acumen: Understanding of business requirements, budgeting, and project management principles to align network infrastructure with organizational goals.
  • Research and Development: Involvement in industry research, staying updated with emerging TCP/IP technologies, and contributing to open-source projects.
  • Cross-Functional Collaboration: Ability to collaborate with other IT teams, such as system administrators, developers, and security analysts, to ensure seamless integration and alignment of network services.
  • Presentation and Communication: Strong presentation and communication skills to effectively convey complex network concepts and solutions to technical and non-technical stakeholders.

Cases when TCP/IP does not work

  1. Firewall Blocking: TCP/IP may not work if there is a firewall configured to block certain TCP/IP ports or protocols. Firewalls are commonly used to enhance network security by filtering incoming and outgoing network traffic. In some cases, misconfigured firewalls or strict security policies can block TCP/IP communication, causing connectivity issues.
  2. Network Congestion: TCP/IP relies on the underlying network infrastructure to transmit data packets between devices. If the network becomes congested due to high traffic or bandwidth limitations, TCP/IP performance can be affected. This can lead to slower data transfer rates, increased latency, and even packet loss, resulting in a degraded connection.
  3. Physical Cable or Hardware Failure: TCP/IP requires a physical medium, such as an Ethernet cable, to transmit data between devices. If there is a cable or hardware failure, TCP/IP communication may not function properly. This can include issues like damaged cables, faulty network interface cards (NICs), or malfunctioning routers or switches.
  4. Incorrect IP Configuration: TCP/IP relies on accurate IP addressing to establish connections between devices. If there is an incorrect IP configuration, such as an invalid IP address, subnet mask, or default gateway, TCP/IP communication can fail. This can occur due to manual misconfiguration, DHCP (Dynamic Host Configuration Protocol) server issues, or conflicts with other devices on the network.
  5. Software or Driver Incompatibility: TCP/IP requires compatible software and drivers on the devices participating in the communication. If there is a software or driver incompatibility, TCP/IP may not function properly. This can happen when using outdated or incompatible operating systems, network drivers, or network applications.

What are top TCP/IP instruments and tools?

  • Wireshark: Wireshark is a widely-used network protocol analyzer that allows users to capture and analyze network traffic in real-time. It was first released in 1998 as Ethereal, but later changed its name to Wireshark in 2006. Wireshark supports hundreds of protocols and is available for various operating systems. It is known for its powerful filtering capabilities and the ability to dissect packets for detailed analysis.
  • Nmap: Nmap, short for Network Mapper, is a powerful open-source network scanning tool. It was first released in 1997 and has since become one of the most popular port scanning tools in the industry. Nmap allows users to discover hosts and services on a network, identify open ports, and detect potential vulnerabilities. It supports a wide range of scanning techniques and is highly customizable.
  • Netcat: Netcat, also known as “nc,” is a versatile networking utility that can be used for various purposes, including port scanning, file transfer, and network troubleshooting. It was initially developed in 1995 as a simple TCP/IP swiss army knife. Netcat can establish both TCP and UDP connections and has become a favorite tool among network administrators and pentesters due to its flexibility and simplicity.
  • tcpdump: tcpdump is a command-line packet analyzer that allows users to capture and analyze network traffic. It was first released in 1987 and has since become a standard tool for network troubleshooting and debugging. tcpdump supports a wide range of packet filtering options and can be used to inspect packets in real-time or save them for later analysis. It is available for various Unix-like operating systems.
  • Traceroute: Traceroute, also known as “tracert” on Windows systems, is a network diagnostic tool used to track the path that packets take from a source to a destination. It was developed in the 1980s and has become an essential tool for network administrators and engineers. Traceroute works by sending packets with increasing Time-To-Live (TTL) values and analyzing the ICMP Time Exceeded responses received from intermediate routers.
  • Ping: Ping is a basic network utility used to test the reachability of a host on an IP network. It was developed in the 1980s and has become a standard tool for network troubleshooting. Ping sends ICMP Echo Request packets to the target host and measures the round-trip time for the packets to reach the destination and return. It is available on most operating systems and is widely used for network diagnostics.

TOP 10 TCP/IP Related Technologies

  • Programming Languages: C, C++, Java

    C is a fundamental language for TCP/IP software development, known for its efficiency and low-level control. C++ builds upon C and provides additional features and object-oriented programming capabilities. Java, with its platform independence and extensive libraries, is widely used for developing networking applications.

  • Python

    Python is a versatile language often chosen for its simplicity and readability. It offers a wide range of libraries and frameworks that make TCP/IP software development faster and more efficient.

  • Frameworks: Node.js

    Node.js is a popular framework for building scalable network applications. It uses JavaScript on the server-side, allowing developers to use a single language throughout the entire development process. Node.js also provides excellent support for handling TCP/IP connections.

  • .NET Framework

    The .NET Framework, developed by Microsoft, offers a comprehensive set of tools and libraries for building network applications. It supports TCP/IP communication through various classes and APIs, making it a preferred choice for Windows-based development.

  • Web Development: HTML, CSS, JavaScript

    Web development plays a crucial role in TCP/IP software development. HTML provides the structure, CSS handles the presentation, and JavaScript adds interactivity. These technologies are essential for creating user interfaces and web-based network applications.

  • Version Control: Git

    Git is a widely used distributed version control system that helps developers manage source code efficiently. It allows for collaborative development, easy branching, and merging, making it an essential tool for TCP/IP software development teams.

  • Testing: JUnit, Selenium

    JUnit is a popular testing framework for Java applications, providing a simple and effective way to write automated tests. Selenium, on the other hand, is widely used for testing web applications, allowing developers to simulate user interactions and verify network functionality.

How and where is TCP/IP used?

Case NameCase Description
1. Web BrowsingTCP/IP development revolutionized web browsing by enabling the transmission of data packets across the internet. This protocol suite allows users to access websites, send and receive emails, and perform various online activities. It solves the task of establishing reliable connections between clients and servers, ensuring efficient data transfer, and handling various internet protocols such as HTTP and HTTPS.
2. File TransferTCP/IP is widely used for file transfer applications. It provides a reliable and secure method for transferring files over the internet, ensuring that the data reaches its destination without errors. Protocols such as FTP (File Transfer Protocol) and SFTP (Secure File Transfer Protocol) utilize TCP/IP to transfer files efficiently and securely.
3. Email CommunicationTCP/IP plays a crucial role in email communication. It enables the transmission of email messages from the sender to the recipient’s mail server. The Simple Mail Transfer Protocol (SMTP) uses TCP/IP to ensure the reliable delivery of emails. Additionally, protocols such as POP (Post Office Protocol) and IMAP (Internet Message Access Protocol) utilize TCP/IP for retrieving and managing emails from mail servers.
4. Voice over IP (VoIP)TCP/IP has revolutionized voice communication by enabling Voice over IP (VoIP) services. VoIP allows users to make voice and video calls over the internet, replacing traditional telephone networks. TCP/IP ensures the reliable transmission of voice data packets, enabling seamless and high-quality communication between users.
5. Remote Access and VPNTCP/IP is widely used for remote access and Virtual Private Network (VPN) solutions. It allows users to establish secure connections to remote networks or access resources from anywhere. TCP/IP protocols such as Remote Desktop Protocol (RDP) and IPsec (Internet Protocol Security) ensure secure and encrypted communication for remote access and VPN services.
6. Internet of Things (IoT)TCP/IP plays a vital role in connecting and managing IoT devices. It enables communication between various IoT devices and the internet, facilitating data exchange and control. TCP/IP protocols such as MQTT (Message Queuing Telemetry Transport) and CoAP (Constrained Application Protocol) are commonly used for IoT applications, ensuring efficient and reliable data transmission.

Pros & cons of TCP/IP

8 Pros of TCP/IP

  • 1. Widely adopted: TCP/IP is the foundational protocol suite for the internet and is used by billions of devices worldwide. Its widespread adoption ensures compatibility and interoperability across different platforms and networks.
  • 2. Robust and reliable: TCP/IP provides reliable data transmission by incorporating error detection, flow control, and congestion control mechanisms. This ensures that data is delivered accurately and efficiently, even in challenging network conditions.
  • 3. Scalable: TCP/IP can handle large-scale networks with ease. It supports a virtually unlimited number of devices and accommodates network growth without significant performance degradation.
  • 4. Versatile: TCP/IP supports various network topologies, including star, mesh, and hybrid configurations. It can be used in both wired and wireless networks, making it adaptable to different environments and technologies.
  • 5. Interoperable: TCP/IP allows different types of devices and operating systems to communicate seamlessly. This interoperability enables the integration of diverse systems and facilitates the exchange of information across networks.
  • 6. Efficient routing: TCP/IP utilizes routing protocols such as Border Gateway Protocol (BGP) to enable efficient data transmission between networks. These protocols ensure that data takes the most optimal paths, reducing latency and improving overall network performance.
  • 7. Extensible: TCP/IP is designed to be extensible, allowing the integration of new protocols and technologies as they emerge. This flexibility enables the evolution and improvement of network capabilities over time.
  • 8. Security features: TCP/IP incorporates security mechanisms such as IPsec (Internet Protocol Security) to protect data during transmission. These features ensure the confidentiality, integrity, and authenticity of network communications.

8 Cons of TCP/IP

  • 1. Complex configuration: Setting up and managing TCP/IP networks can be complex, especially for inexperienced users. Proper configuration requires understanding of various protocols, addressing schemes, and network components.
  • 2. Vulnerable to attacks: TCP/IP networks are susceptible to various types of attacks, including IP spoofing, DDoS attacks, and packet sniffing. Network administrators must implement robust security measures to mitigate these risks.
  • 3. Limited real-time capabilities: TCP/IP was primarily designed for reliable data transmission rather than real-time applications. As a result, it may not be suitable for latency-sensitive applications such as voice and video streaming.
  • 4. Network congestion: TCP/IP’s congestion control mechanisms, while effective, can sometimes lead to network congestion. This can occur when multiple devices attempt to transmit data simultaneously, causing delays and reduced network performance.
  • 5. Lack of built-in QoS: Quality of Service (QoS) features, which prioritize certain types of network traffic, are not inherent to TCP/IP. Implementing QoS requires additional configuration and may introduce complexity to network management.
  • 6. Limited multicast support: TCP/IP’s multicast capabilities are not as robust as its unicast capabilities. Multicast, which allows efficient data distribution to multiple recipients, may require additional protocols and configuration.
  • 7. Dependency on DNS: TCP/IP heavily relies on the Domain Name System (DNS) for hostname resolution. If DNS servers experience issues or become unavailable, it can disrupt network operations and access to resources.
  • 8. Addressing limitations: The IPv4 addressing scheme used by TCP/IP has limitations in terms of available addresses. Although IPv6 has been introduced to address this issue, the transition from IPv4 to IPv6 can be challenging and time-consuming.

Soft skills of a TCP/IP Developer

Soft skills are essential for TCP/IP Developers as they contribute to effective communication, collaboration, and problem-solving within a team. Here are the soft skills required at different levels of experience:

Junior

  • Attention to detail: Ability to spot and resolve minor issues in TCP/IP configurations.
  • Active listening: Being attentive and responsive when receiving instructions or feedback from senior team members.
  • Time management: Efficiently managing time to meet deadlines and prioritize tasks.
  • Teamwork: Collaborating with other team members to troubleshoot and resolve network issues.
  • Adaptability: Quickly adapting to changes in network configurations and protocols.

Middle

  • Critical thinking: Analyzing complex network problems and proposing effective solutions.
  • Problem-solving: Identifying and resolving network issues efficiently to minimize downtime.
  • Leadership: Assisting junior team members and providing guidance when needed.
  • Communication: Effectively conveying technical information to non-technical stakeholders.
  • Conflict resolution: Resolving conflicts within the team and fostering a positive work environment.
  • Documentation: Maintaining accurate and up-to-date documentation of network configurations.
  • Customer service: Interacting with clients to understand their network requirements and provide support.

Senior

  • Project management: Leading network infrastructure projects and ensuring their successful completion.
  • Mentoring: Mentoring junior and middle-level developers, sharing knowledge, and providing guidance.
  • Strategic thinking: Developing long-term plans to improve network infrastructure and security.
  • Negotiation: Negotiating contracts and agreements with vendors for network equipment and services.
  • Presentation skills: Delivering technical presentations to clients or management teams.
  • Vendor management: Managing relationships with network equipment vendors and service providers.
  • Risk management: Assessing and mitigating risks associated with network vulnerabilities.
  • Continuing education: Staying updated with the latest developments in TCP/IP protocols and technologies.

Expert/Team Lead

  • Decision-making: Making informed decisions to drive network architecture and design.
  • Strategic planning: Developing a long-term vision for the network infrastructure and aligning it with organizational goals.
  • Team management: Leading and managing a team of TCP/IP developers, assigning tasks, and ensuring productivity.
  • Innovation: Introducing new technologies and methodologies to optimize network performance.
  • Business acumen: Understanding the business requirements and aligning network solutions accordingly.
  • Collaboration: Building strong relationships with stakeholders across departments and fostering collaboration.
  • Conflict resolution: Resolving conflicts within the team and addressing any issues that may arise.
  • Continuous improvement: Identifying areas for improvement and implementing strategies to enhance network efficiency and security.
  • Thought leadership: Sharing knowledge and insights through publications, conference presentations, or industry forums.
  • Technical expertise: Possessing an in-depth understanding of TCP/IP protocols, network security, and emerging technologies.
  • Strategic partnerships: Establishing partnerships with industry leaders and leveraging their expertise for network advancements.

TOP 10 Tech facts and history of creation and versions about TCP/IP Development

  • TCP/IP (Transmission Control Protocol/Internet Protocol) is the foundational protocol suite for the internet.
  • It was developed in the early 1970s as part of a project funded by the United States Department of Defense’s Advanced Research Projects Agency (ARPA).
  • The initial design of TCP/IP was created by Vinton Cerf and Robert Kahn, often referred to as the “fathers of the internet.”
  • TCP/IP was designed to provide a reliable and end-to-end communication protocol for connecting different computer networks.
  • In 1983, TCP/IP became the standard protocol for the ARPANET, the precursor to the modern internet.
  • Over the years, TCP/IP has undergone several revisions and updates, with IPv4 (Internet Protocol version 4) being the most widely used version.
  • IPv4, which was introduced in 1981, uses a 32-bit addressing scheme and allows for approximately 4.3 billion unique IP addresses.
  • As the number of devices connected to the internet increased, the need for more IP addresses led to the development of IPv6 (Internet Protocol version 6) in 1998.
  • IPv6 uses a 128-bit addressing scheme and provides an almost unlimited number of unique IP addresses.
  • TCP/IP has played a crucial role in enabling the growth and expansion of the internet, allowing for the seamless communication and transfer of data across different networks.

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