Senior Modem Stack Engineer

Mars; King's Sutton; Hybrid; GBP 90,000 - 98,000; Full time

Benefits offered by this job

Share scheme

Benefits package

Job summary

MARS Recruitment is seeking a Senior Modem Stack Engineer for Oxford-based hybrid work. You will develop real-time C/C++ communications software for wireless systems, collaborating with modem, embedded, platform-integration and verification teams to define boundaries between PHY, platform, and networks.

The role is hands-on with Linux/embedded Linux, multithreading, and performance-sensitive code. Offer: £90,000–£97,500 per year plus a share scheme and benefits.

Qualifications

• Strong C/C++ experience in real-time or embedded systems.
• Experience in wireless MAC/modem protocols and control software.
• Familiar with IPv4/IPv6 networking and transport interfaces.
• Proficient in Linux/embedded Linux with multithreading and debugging.

Responsibilities

• Design and implement modem stack interfaces between PHY and higher layers.
• Collaborate with cross-functional modem/embedded/platform teams in a multidisciplinary setting.
• Contribute to testing, code reviews, and disciplined software releases.

Skills

C/C++

Real-time

Embedded systems

Wireless protocols

Linux

Multithreading

Networking basics

MAC layer concepts

Debugging

Version control

Tools

Git

Linux

Job description

Senior Modem Stack Engineer | Next-Gen Wireless Comms | Start-up | Oxford / Hybrid | 1 day per week onsite £90,000pa - £97,500pa plus share scheme & benefits:

adaptation, packet handling, and the interface to higher-layer networking. They will work closely with modem, embedded, platform-integration and verification engineers to define clean boundaries between the PHY, the underlying platform, and external network interfaces. This is a hands‑on C/C++ communications protocol role. Senior Modem Stack Engineer essential experience: Strong professional C/C++ experience developing real-time, embedded or performance-sensitive communications software. Practical experience developing wireless MAC, modem protocol-stack or closely related communications‑control software. Strong understanding of MAC layer concepts such as framing, scheduling or channel access, buffering, retransmission, link state and traffic handling. Experience implementing adaptive link control or radio resource logic that responds to measured channel or link conditions. Good understanding of the PHY/MAC boundary, including how link quality measurements, operating modes and timing constraints, are exposed to higher layer control software. Good networking fundamentals, including packet-oriented interfaces and practical familiarity with IPv4/IPv6 and common transport or link interfaces. Experience developing on Linux and/or embedded Linux platforms, including multithreading, concurrency, timing sensitive software and system‑level debugging. Ability to design clean, modular interfaces between protocol software, physical layer software, embedded platform services and higher layer networking. Strong debugging and problem‑solving skills across distributed or multi‑component communications systems. Experience with version control, automated testing, code review and disciplined software release practices. Ability to work closely with PHY/modem, embedded, platform-integration, verification and systems engineers in a multidisciplinary team.

If you’re a Senior Modem Stack Engineer with an expertise in advanced wireless communication systems, and you’re looking for a career

MARS Recruitment is an equal opportunities employer and positively welcomes applications from suitably qualified applicants regardless of race, colour, sex, marital status, national origin, religion, age, disability, or any other protected status.