At a Glance
- Tasks: Lead the design and validation of satellite communication systems in a dynamic space 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: Collaborative environment with a focus on innovation and professional growth.
- 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.
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 in Harwell employer: Open Cosmos
Open Cosmos is an exceptional employer, offering the chance to work at the forefront of space technology while contributing to meaningful global challenges. With a diverse and ambitious team, employees benefit from a supportive work culture that fosters innovation and collaboration, alongside opportunities for professional growth in a rapidly evolving industry. Join us to be part of a mission-driven company that values your expertise and creativity in making space accessible for all.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Access Layer Engineer in Harwell
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, attend relevant meetups or webinars, and don’t be shy about sliding into DMs on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects related to PHY and MAC layer design. This gives potential employers a tangible look at what you can do, especially when it comes to satellite communication systems.
✨Tip Number 3
Prepare for interviews by brushing up on key concepts like L1/L2 protocols and link adaptation techniques. Practice explaining complex ideas simply, as you’ll likely need to communicate with non-technical stakeholders too.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are genuinely interested in joining our mission-driven team.
We think you need these skills to ace Senior Access Layer Engineer in Harwell
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 around 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
✨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 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. Being able to discuss how these standards influence your work will show that you’re not just technically skilled but also aware of industry benchmarks.
✨Be a Team Player
Highlight your experience working with multidisciplinary teams. Discuss how you’ve collaborated with architects and engineers in the past to bridge system design and implementation, as teamwork is crucial in this role.
