Wi-Fi/DOCSIS Network Engineer

Infosys; Bengaluru; On-site; INR 1,500,000 - 2,700,000; Full time

Job summary

Infosys Bengaluru is seeking a seasoned embedded systems engineer to design and port RDK‑B modules and vendor SDKs for routers/modems across OEMs. You will implement C/C++ control services for LEDs, USB, and system displays, and develop RTOS drivers, SNMP interfaces, SSH/Telnet support, and voice features.

You will build data collection/telemetry per TR‑369 USP, optimize performance, and ensure reliability while collaborating with hardware, QA and cloud/DevOps teams for manufacturing tests and

Qualifications

• Proficient in C/C++ for firmware and driver development.
• Experience with Linux-based build systems and RTOS environments.
• Strong knowledge of network protocols and wireless stacks.

Responsibilities

• Design, develop and port RDK/ RDK‑B modules across routers/modems.
• Implement control services for LED, USB, FAN, and displays.
• Develop RTOS drivers, SNMP interfaces, SSH/Telnet support, and audio features.
• Build data models and telemetry modules per TR‑369 USP.
• Own architecture, performance tuning, and reliability improvements.
• Collaborate with hardware, QA and DevOps for CI/CD and field tests.
• Produce design docs, test plans and release notes; perform code reviews.

Skills

C

C++

Python

Shell scripting

Linux

RTOS

Yocto/OpenWrt

RDK/B

Docsis 3.1/4.0

SNMP

TR-369 USP

TR-069

Wi-Fi 802.11ac/ax/be

TCP/IP

VLAN

QoS

NAT

firewall

Git

CI/CD

Unit/Integration tests

Profiling

Performance optimization

Crash analysis

IPC/Threading

LED/USB/FAN modules

SSH/Telnet

Voice/Audio features

Wi-Fi 7, cellular back-up

OpenWrt/prplMesh

Rust (preferred)

Board bring-up

Tools

GitLab/GitHub CI

Job description

• Languages: C (expert), C++ (proficient); Python for tooling/automation; Shell scripting.
• Platforms: Linux (Yocto/OpenWrt-like build systems), RTOS (FreeRTOS/ThreadX or equivalent).
• Frameworks/Stacks: RDK/RDK‑B, Docsis (preferably 3.1/4.0), SNMP, TR‑369 (USP), TR‑069 (nice to have).
• Networking: Wi‑Fi (802.11ac/ax/be), TCP/IP, VLAN, QoS, NAT, firewall, routing, policy-based failover.
• Version Control & CI: Git, GitLab/GitHub CI, artifact management, automated unit/integration tests.
• Quality & Reliability: Profiling, memory/performance optimization, watchdogs, crash analysis, core dumps.
• System Architecture: Module boundaries, IPC, threading/concurrency, resource management.
• Design, develop, and port RDK/RDK‑B or vendor SDK modules on routers/modems across different OEMs.
• Implement C/C++ control services for LED, USB, FAN, and system state displays for cable modems/routers.
• Develop RTOS modules/drivers, SNMP interfaces, SSH/Telnet support, and voice/audio features.
• Build data control modules for Wi‑Fi 7 routers including cellular backup orchestration.
• Design TR‑369 (USP) based data collection/telemetry modules and define robust data models.
• Own system architecture, performance tuning (CPU/memory/latency), and reliability (watchdogs, crash dumps).
• Collaborate with hardware, QA, and cloud/DevOps teams for manufacturing tests, CI/CD, and field telemetry.
• Write high-quality design docs, test plans, and release notes; participate in code reviews and certification prep.
• Troubleshoot field escalations and drive root cause analysis across firmware, drivers, and network stack layers.

Nice‑to‑Have / Preferred:

• Wi‑Fi 7 expertise: MLO, 320MHz channels, multi‑RU scheduling, AFC (where applicable).
• Experience with cellular modems (LTE/5G), failover and bonding, multipath.
• RDK telemetry adapters, USP controllers/agents, vendor data model mapping.
• Rust for systems modules (safety‑critical or performance‑sensitive components).
• Exposure to OpenWrt, prplOS/prplMesh, EasyMesh, and board bring‑up.
• Manufacturing line support: factory calibration, RF tests, firmware provisioning.
• Security: secure boot, trusted execution, key management, certificate provisioning.
• Compliance/certification: Docsis, Wi‑Fi Alliance, FCC/CE, operator acceptance test processes.