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- Tasks: Lead the design and validation of satellite communication systems in a dynamic environment.
- Company: Join Open Cosmos, a mission-driven company making space accessible for global challenges.
- Benefits: Flexible work locations, diverse team, and opportunities to work on cutting-edge technology.
- Other info: Collaborate with a supportive team and enjoy a culture of innovation.
- Why this job: Shape the future of satellite communications and tackle real-world problems from space.
- Qualifications: Expertise in wireless PHY/MAC design and strong knowledge of 3GPP NR standards required.
The predicted salary is between 60000 - 80000 £ per year.
Aim high, go beyond! At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before. The Satcom team is responsible for the design, delivery and performance of Open Cosmos’ satellite communications services, spanning the space segment, ground infrastructure and global connectivity. As the team continues to scale, we are now looking for a Senior Access Layer Engineer who’ll lead the implementation and validation of the satellite air interface, translating high-level architecture into detailed designs, simulations, and working prototypes.
What will you be doing? You’ll play a key role in shaping how waveform generation, MAC protocols, and link adaptation perform within demanding LEO environments by:
- Developing and optimising PHY and MAC layer functionality for satellite communication systems
- Defining and validating random access, scheduling, timing advance, and resource allocation mechanisms
- Designing algorithms to mitigate LEO-specific challenges including Doppler effects, latency, and mobility constraints
- Building and maintaining link-level simulation environments using MATLAB, Simulink, or Python
- Supporting waveform, numerology, and frame structure definition aligned to 3GPP NTN and DVB-S2X standards
- Developing and validating link adaptation strategies including ACM and CSI-driven optimisation
- Defining and governing interface specifications across critical access layer subsystems
- Leading rapid prototyping activities using SDR platforms and system-in-the-loop validation environments
- Designing and executing verification scenarios for mobility, handover, BER, and throughput performance
- Working closely with architects and multidisciplinary engineering teams to bridge system design and implementation
What You’ll bring:
- Strong capability in wireless PHY and MAC layer design within satellite or high-performance communication systems
- Deep understanding of L1/L2 protocols including random access, scheduling, timing advance, and resource allocation
- Strong knowledge of 3GPP NR standards (TS 38.211–38.321) and familiarity with DVB-S2X
- Advanced modelling and simulation capability using MATLAB, Simulink, or Python
- Strong grounding in Digital Signal Processing including synchronisation, forward error correction, and multi-user detection
- Knowledge of waveform design, numerology, and frame structure validation
- Strong understanding of link adaptation techniques including ACM and CSI-driven optimisation
- Familiarity with SDR platforms such as USRP or GNU Radio and rapid prototyping workflows
- Understanding of LEO satellite communication challenges including Doppler, propagation delay, and mobility management
- A highly analytical and structured approach to problem-solving, performance optimisation, and system validation
This role will be based in any of our locations. To apply, you must have the legal right to work in your chosen location. When applying, please submit your CV in English.
Why Open Cosmos?
- Work at the cutting edge of space technology with customers around the globe
- A mission-driven company making space accessible to help solve real-world challenges
- A diverse, ambitious, and supportive team
Senior Access Layer Engineer employer: Open Cosmos Ltd.
Contact Detail:
Open Cosmos Ltd. Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Access Layer Engineer
✨Tip Number 1
Network like a pro! Get out there and connect with people in the industry. Attend events, join online forums, or even hit up LinkedIn. The more you engage, the better your chances of landing that Senior Access Layer Engineer role.
✨Tip Number 2
Show off your skills! Create a portfolio or a GitHub repository showcasing your projects related to PHY and MAC layer design. This will give potential employers a taste of what you can do and set you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on LEO satellite communication challenges and link adaptation techniques. Be ready to discuss how you've tackled similar problems in the past. Confidence and knowledge go a long way!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive about their job search. Let’s get you on board!
We think you need these skills to ace Senior Access Layer Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Access Layer Engineer role. Highlight your experience with PHY and MAC layer design, and don’t forget to mention any relevant projects or technologies you've worked with that align with our needs.
Showcase Your Skills: We want to see your skills in action! Include specific examples of how you've tackled challenges in satellite communications, especially those related to LEO environments. This will help us understand your problem-solving approach.
Keep It Clear and Concise: When writing your application, keep it clear and concise. Use bullet points where possible to make it easy for us to read through your qualifications and experiences quickly.
Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. We can’t wait to see what you bring to the table!
How to prepare for a job interview at Open Cosmos Ltd.
✨Know Your Stuff
Make sure you brush up on your knowledge of wireless PHY and MAC layer design, especially in satellite communication systems. Be ready to discuss specific protocols like random access and scheduling, as well as how they apply to LEO environments.
✨Show Off Your Skills
Prepare to demonstrate your advanced modelling and simulation capabilities using tools like MATLAB, Simulink, or Python. Bring examples of past projects where you've tackled challenges like Doppler effects or latency, and be ready to explain your thought process.
✨Understand the Standards
Familiarise yourself with 3GPP NR standards and DVB-S2X. During the interview, highlight your understanding of these standards and how they relate to the role. This shows that you're not just technically skilled but also aware of industry benchmarks.
✨Be a Team Player
Since this role involves working closely with architects and multidisciplinary teams, be prepared to discuss your collaborative experiences. Share examples of how you've bridged gaps between system design and implementation in previous roles.