Skill-Profil

TCP/IP Deep Dive

TCP/IP: network model, TCP handshake, congestion control, UDP, sockets

Networking & Telecom Network Protocols

Rollen

wo dieser Skill vorkommt

Stufen

strukturierter Entwicklungspfad

Pflichtanforderungen

die anderen 9 optional

Networking & Telecom

Network Protocols

17.3.2026

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Die Tabelle zeigt, wie die Tiefe von Junior bis Principal wächst.

Rolle	Pflicht	Beschreibung
Embedded Developer		Understands TCP/IP stack fundamentals for embedded devices. Configures basic socket communication on RTOS. Debugs network issues using packet captures and protocol analyzers.
IoT Engineer		Understands TCP/IP networking for IoT device connectivity. Works with MQTT over TCP, configures static IPs, and troubleshoots connectivity issues in constrained networks.
Network Engineer	Pflicht	Deeply understands the TCP/IP stack: ethernet framing, IP routing, TCP three-way handshake, flow control, congestion control. Can read packet captures in Wireshark.
Telecom Developer		Understands TCP/IP protocol layers and their role in telecom infrastructure. Analyzes packet flows with Wireshark, understands QoS marking, and works with carrier-grade NAT and routing basics.

Rolle	Pflicht	Beschreibung
Embedded Developer		Implements TCP/IP networking on embedded: lwIP stack configuration, socket programming, TLS integration (mbedTLS). Optimizes for constrained environments.
IoT Engineer		Applies TCP/IP optimizations for IoT: keep-alive, CoAP over UDP, DTLS. Diagnoses IoT network issues via Wireshark. Configures mDNS for device discovery.
Network Engineer	Pflicht	Analyzes and optimizes TCP performance: MTU tuning, window scaling, Nagle algorithm, TCP BBR congestion control. Troubleshoots network latency with tcpdump and network analysis tools.
Telecom Developer		Independently applies TCP/IP Deep Dive in practice. Understands trade-offs of different approaches. Solves typical tasks independently.

Rolle	Pflicht	Beschreibung
Embedded Developer		Designs embedded networking: custom TCP/IP stack tuning, zero-copy networking, connection pooling. Optimizes throughput on MCU.
IoT Engineer	Pflicht	Designs networking stack for IoT platform: protocol selection (MQTT/CoAP/LwM2M), QoS strategies, network failover. Optimizes for unreliable networks.
Network Engineer	Pflicht	Optimizes Linux network stack for high-performance: SO_REUSEPORT, TCP fast open, QUIC, kernel bypass (DPDK). Diagnoses complex network bottlenecks. Tunes kernel network parameters.
Telecom Developer	Pflicht	Has deep expertise in TCP/IP Deep Dive. Designs solutions for production systems. Optimizes and scales. Mentors the team.

Rolle	Pflicht	Beschreibung
Embedded Developer		Defines networking strategy for the embedded platform. Establishes TCP/IP configuration standards, security (TLS), conducts reviews.
IoT Engineer	Pflicht	Defines networking standards for IoT platform. Establishes protocol selection guidelines. Coordinates network security and monitoring for the device fleet.
Network Engineer	Pflicht	Defines network standards and SLAs for the platform. Makes architectural decisions on transport protocol (TCP vs QUIC). Manages network capacity planning.
Telecom Developer	Pflicht	Defines TCP/IP Deep Dive strategy at the team/product level. Establishes standards and best practices. Conducts reviews.

Rolle	Pflicht	Beschreibung
Embedded Developer		Shapes networking strategy for embedded products: TCP/IP stack selection (lwIP vs custom), TLS implementation standards, network security architecture for IoT devices in hostile environments.
IoT Engineer	Pflicht	Defines enterprise IoT networking strategy. Evaluates 5G NB-IoT, LPWAN, TSN for industrial IoT. Builds network architecture for global IoT deployments.
Network Engineer	Pflicht	Shapes transport strategy for the platform. Researches QUIC/HTTP3 adoption and modern transport innovations. Influences the organization's network architecture.
Telecom Developer	Pflicht	Defines TCP/IP Deep Dive strategy at the organizational level. Establishes enterprise approaches. Mentors leads and architects.

Junior 4 Anforderungen

Embedded Developer

Understands TCP/IP stack fundamentals for embedded devices. Configures basic socket communication on RTOS. Debugs network issues using packet captures and protocol analyzers.
IoT Engineer

Understands TCP/IP networking for IoT device connectivity. Works with MQTT over TCP, configures static IPs, and troubleshoots connectivity issues in constrained networks.
Network Engineer
Pflicht

Deeply understands the TCP/IP stack: ethernet framing, IP routing, TCP three-way handshake, flow control, congestion control. Can read packet captures in Wireshark.

Middle 4 Anforderungen

Embedded Developer

Implements TCP/IP networking on embedded: lwIP stack configuration, socket programming, TLS integration (mbedTLS). Optimizes for constrained environments.
IoT Engineer

Applies TCP/IP optimizations for IoT: keep-alive, CoAP over UDP, DTLS. Diagnoses IoT network issues via Wireshark. Configures mDNS for device discovery.
Network Engineer
Pflicht

Analyzes and optimizes TCP performance: MTU tuning, window scaling, Nagle algorithm, TCP BBR congestion control. Troubleshoots network latency with tcpdump and network analysis tools.

Senior 4 Anforderungen

Embedded Developer

Designs embedded networking: custom TCP/IP stack tuning, zero-copy networking, connection pooling. Optimizes throughput on MCU.
IoT Engineer
Pflicht

Designs networking stack for IoT platform: protocol selection (MQTT/CoAP/LwM2M), QoS strategies, network failover. Optimizes for unreliable networks.
Network Engineer
Pflicht

Optimizes Linux network stack for high-performance: SO_REUSEPORT, TCP fast open, QUIC, kernel bypass (DPDK). Diagnoses complex network bottlenecks. Tunes kernel network parameters.

Lead / Staff 4 Anforderungen

Embedded Developer

Defines networking strategy for the embedded platform. Establishes TCP/IP configuration standards, security (TLS), conducts reviews.
IoT Engineer
Pflicht

Defines networking standards for IoT platform. Establishes protocol selection guidelines. Coordinates network security and monitoring for the device fleet.
Network Engineer
Pflicht

Defines network standards and SLAs for the platform. Makes architectural decisions on transport protocol (TCP vs QUIC). Manages network capacity planning.

Principal 4 Anforderungen

Embedded Developer

Shapes networking strategy for embedded products: TCP/IP stack selection (lwIP vs custom), TLS implementation standards, network security architecture for IoT devices in hostile environments.
IoT Engineer
Pflicht

Defines enterprise IoT networking strategy. Evaluates 5G NB-IoT, LPWAN, TSN for industrial IoT. Builds network architecture for global IoT deployments.
Network Engineer
Pflicht

Shapes transport strategy for the platform. Researches QUIC/HTTP3 adoption and modern transport innovations. Influences the organization's network architecture.

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