At a Glance
- Tasks: Design and optimise advanced wireless communication software for secure systems.
- Company: Fast-paced start-up linked to the University of Oxford.
- Benefits: Competitive salary, innovative projects, and a chance to make an impact.
- Other info: Exciting opportunities for career growth in a dynamic environment.
- Why this job: Join a mission-driven team shaping the future of communication technology.
- Qualifications: Degree in relevant field and strong embedded C/C++ skills required.
The predicted salary is between 70000 - 80000 £ per year.
We are an early‑stage, fast‑paced, independently funded start‑up with strong links to the University of Oxford. Our mission is to enable safe and efficient communication systems that ultimately protect our way of life.
Overview
As a Modem Stack Engineer you will design, implement and optimise advanced wireless communication software for secure and resilient systems. The role focuses on Layer 2 and Layer 3 protocol stack components within modern wireless systems, such as cellular, Wi‑Fi, and custom SDR‑based networks. You will work across embedded software, modem integration and real‑time communications environments to deliver high‑performance and robust wireless solutions.
Key Responsibilities
- Design, develop and optimise Layer 2 (MAC, RLC, PDCP, RRC, QoS, mobility management, session management) and Layer 3 protocol stack functionality for cellular, WLAN, Bluetooth or SDR‑based systems.
- Integrate modem software into embedded platforms, including RTOS, embedded Linux and multi‑threaded systems.
- Debug and optimise L2/L3 stack operation using protocol analysers, logging frameworks, profiling tools and performance optimisation techniques.
- Collaborate with PHY/DSP, FPGA, RF, systems and software engineering teams to ensure seamless stack/physical layer interaction.
- Support validation, interoperability testing, field trials and network integration activities for defence‑related communication systems.
Qualifications & Experience
- Degree in Computer Engineering, Electronic Engineering, Telecommunications, Computer Science or equivalent industry experience.
- Strong proficiency in embedded C/C++ for real‑time or low‑level systems.
- Hands‑on experience developing or integrating modem software for one or more wireless technologies.
- Strong understanding of wireless communication protocols and modem stack architectures.
- Experience debugging L2/L3 protocol stack functionality in at least one of MAC, RLC, PDCP, RRC, QoS, mobility or session management.
- Familiarity with RTOS, embedded Linux, multi‑threaded systems, low‑level debugging tools, protocol analysers, logging frameworks, profiling tools and optimisation techniques.
- Strong analytical and debugging skills across multiple layers of the modem stack.
- Ability to collaborate effectively with interdisciplinary engineering teams.
- Eligibility to work on projects related to the UK Defence and Security sector.
Desired Experience
- 5+ years of industry experience in modem, embedded wireless or protocol‑stack software development.
- Deep expertise in 4G LTE or 5G NR, Wi‑Fi (802.11), Bluetooth/BLE or SDR‑based networks.
- Experience with 3GPP, IEEE, STANAG or other military/communications standards.
- Familiarity with SDR frameworks such as srsRAN, OpenAirInterface, GNU Radio or USRP‑based systems.
- Experience with modem validation, interoperability testing, field trials, or network integration activities.
- Knowledge of radio resource management, link adaptation, scheduling, handover, mobility management and QoS mechanisms.
- Understanding of DSP concepts and interaction between PHY and higher protocol layers.
- Experience optimising software for multi‑core embedded systems, hardware accelerators or low‑power platforms.
- Experience working in secure, mission‑critical or defence‑related communications environments.
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.
Modem Stack Engineer in Oxford employer: Mars
As an early-stage, fast-paced start-up with strong ties to the University of Oxford, we offer a dynamic work environment where innovation thrives. Our commitment to employee growth is reflected in our collaborative culture, providing opportunities to work on cutting-edge wireless communication technologies that have a meaningful impact on society. Join us to be part of a mission-driven team dedicated to developing secure and efficient communication systems, all while enjoying competitive salaries and the chance to contribute to groundbreaking projects.
StudySmarter Expert Advice🤫
We think this is how you could land Modem Stack Engineer in Oxford
✨Get Chummy with Industry Events
Dive into telecommunications networking conferences and expos. These are golden opportunities to meet potential employers like Mars and learn about open positions directly from their teams. Keep an eye out for workshops or panels – they’re perfect for showcasing your passion and expertise!
✨Join Networking Communities
Find online forums or local meetups that focus on telecommunications and networking. Sites like LinkedIn Groups or Reddit communities can be great for connecting with professionals in the field. Just remember to participate in discussions – you never know when someone might mention job openings at places like Mars.
✨Showcase Your Skills with Personal Projects
If you’ve got any personal projects or contributions to open-source networking tools, flaunt them! Create a portfolio that showcases your skills relevant to what telecommunication companies are looking for. It’s a great conversation starter during interviews and networking chats.
✨Utilise Online Job Boards Wisely
While we’re all about encouraging you to apply through our website, also keep an eye on job boards specific to tech and telecommunication roles. Websites such as Telecommunication Jobs and TechCareers often list full-time roles that may not appear elsewhere. Just be sure to tailor every application to grab attention – even small tweaks can make a big difference!
We think you need these skills to ace Modem Stack Engineer in Oxford
Some tips for your application 🫡
Show Off Your Technical Know-How:When you're applying for a role in telecommunications and networking, it’s crucial to highlight your technical skills. Mention specific technologies you're proficient in, like IP networking, VoIP, or security protocols. Be sure your CV includes any relevant certifications such as CCNA or CompTIA Network+; they really show you've got the chops for the job.
Tailor Your Experience to Match Networking Projects:In your CV and cover letter, don’t just list your past jobs—showcase specific projects that align with the role! If you've worked on network design, implementation, or troubleshooting, weave those experiences in and highlight metrics to demonstrate your impact. This paints a vivid picture of how you'd fit into the role at Mars.
Show Enthusiasm for the Industry:With telecommunications evolving rapidly, it’s important to express your passion for the field in your application. Mention any trends or innovations you've been following that excite you and how they'd influence your work. This can really set you apart and show that you're not just after a job, but a career!
Keep It Clean and Professional:While it’s important to be personable, ensure your application maintains a clean and structured format. Use clear headings and bullet points to make it easy for hiring managers to dig into your skills and experience. Remember, you’re applying for a full-time role, so a well-organised application will signal your seriousness about the position at Mars.
How to prepare for a job interview at Mars
✨Brush Up on Networking Protocols
Make sure you’re up to speed with the key networking protocols like TCP/IP, UDP, and perhaps even MPLS if it's relevant. We can expect technical questions about how these protocols function and the problems they solve, so a solid understanding will help you shine.
✨Showcase Your Projects
Got a portfolio? Bring it along! Highlight any relevant projects where you've designed or managed network systems. This is your chance to demonstrate practical experience; employers love to see how your skills can be applied in real-world scenarios.
✨Get Comfortable with Technical Scenarios
You might be faced with a case study or a technical troubleshooting scenario during the interview. Practise responding to common networking issues—like packet loss or latency problems. Thinking through these scenarios will help us sound confident and competent in our responses.
✨Emphasise Team Collaboration Skills
In the telecommunications field, teamwork is key! Make sure to share examples of how you’ve worked collaboratively, whether in past jobs or projects at uni. Employers want to see that you’re not just technically savvy, but also great at working within a team setting.
