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For Companies At a Glance
- Tasks: Design and develop eSIM profiles, manage device settings, and conduct rigorous testing.
- Company: Join Airalo, the world's first eSIM store revolutionising global connectivity.
- Benefits: Enjoy health insurance, remote work stipend, wellness credits, and an all-expenses-paid company retreat.
- Why this job: Be part of a diverse team making a real impact in the travel-tech industry.
- Qualifications: 3+ years in mobile device configuration, strong problem-solving skills, and excellent communication.
- Other info: Remote-first environment with opportunities for personal and professional growth.
The predicted salary is between 36000 - 60000 £ per year.
About Airalo
Airalo is the world’s first eSIM store that helps people connect in over 200+ countries and regions across the globe. We are building the next digital service that revolutionises the telecom industry. We are a travel-tech company and an equal-opportunity environment that values and executes diversity, inclusion, and equity. Our team is spread across 50+ countries and six continents. What glues us together is our commitment to changing the way you connect.
About you
We hope that you care deeply about the quality of your work, the intrinsic worth of tasks, and the success of your team. You are self-disciplined and do not require micromanagement in terms of your skillset and work ethic. You do your best to flourish as an individual every day while working hard to foster a collaborative team environment. You believe in the importance of being — and staying — authentic, honest, positive, and kind. You are a good interlocutor with clear and concise communication. You are able to manage multiple projects, have an analytical mind, pay keen attention to detail, and love to get your hands dirty. You are cognizant, tolerant, and welcoming of vulnerabilities and cultural differences.
About the Role
Position: Full-time / Employee
Location: Remote-first
Benefits: Health Insurance, work-from-anywhere stipend, annual wellness & learning credits, annual all-expenses-paid company retreat in a gorgeous destination & other benefits
The eSIM & Device Engineer will join our Core Networks Engineering team. They will be a dedicated specialist focused on Device setting management, driving our mission toward global connectivity!
Your main responsibilities will be:
- Design, develop, and validate eSIM Electrical Profiles (MVNO/Roaming) according to GSMA SGP.22 standards.
- Configure file structures ($EF_{ICCID}$, $EF_{IMSI}$, $EF_{PLMN}$, etc.) and ensure correct applet loading.
- Manage the generation and testing of Input Files for Subscription Management platforms (SM-DP+).
- Conduct rigorous testing on the latest iOS and Android flagships (e.g., iPhone 15/16, Samsung S24, Pixel 9) and mid-range devices from global markets (APAC/LATAM/EMEA).
- Validate the Local Profile Assistant (LPA) behaviour during the Remote SIM Provisioning (RSP) flow—from QR code scanning to the TLS-secured profile download.
- Plan and execute Over-the-Air (OTA) campaigns to update the eUICC file system ($EF_{PLMN}$, $EF_{IMSI}$) or applet parameters on devices already deployed in the field.
- Use tools like the COMPRION eSIM Tracer or Ul SIMtester to analyse APDU logs and identify failures in Remote File Management (RFM) or Remote Application Management (RAM) over HTTP, or HTTPS (CAT-TP).
- Perform "live" OTA testing using network simulators or global roaming testbeds to verify Steering of Roaming (SoR) updates and ensure the device correctly switches to the preferred partner network.
- Analyse protocol traces (APDU logs) to debug communication issues between the handset and the eUICC.
- Investigate "No Service" or activation failures specific to international roaming steering.
- Optimise profile sizes to ensure fast download speeds over varying network conditions (3G to 5G).
Must Haves
- Three years plus experience in mobile device and OTA configuration and testing.
- Experience with Voice (including VoLTE & VoWiFi), SMS and Data (APN settings).
- Expertise in Device settings for iOS Apple (Carrier Bundle) and Android including initiatives such as GSMA Network Settings Exchange (NSX).
- Excellent verbal and written communication skills.
- Preference for previous experience at a Tier 1 Carrier, leading MVNO or an eSIM Vendor (G+D, Thales, IDEMIA).
- Knowledge of Subscription Management orchestration for travel-specific use cases (multi-IMSI, localized breakouts).
- A "problem solver" mindset—willingness to test niche Android variants from different global markets.
Nice to Have
- Remote testing (e.g. Segron, Mobilium) experience.
- Experience with OTA systems e.g. Thales.
- Knowledge of mobile network call flows (signalling) for 4G and 5G.
- Scripting languages (e.g. python).
If you are interested in this position, please apply via the link.
By applying, you acknowledge and agree that, in case of successful application, Airalo may request to run background checks as a condition for entering into an agreement with you. Rest assured that these checks will only occur upon your prior consent and at the end of the selection process, and will be strictly limited to what is allowed under the laws that are applicable to you. All data that you share or that we collect in connection with such checks will be processed in accordance with our Privacy Policy.
We sincerely thank all applicants in advance for submitting their interest in this opportunity. Airalo is an equal-opportunity employer and values diversity, equity & inclusion. We do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations upon request for individuals with disabilities throughout our job interview process.
eSIM & Device Engineer in London employer: Airalo Group
Contact Detail:
Airalo Group Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land eSIM & Device Engineer in London
✨Tip Number 1
Network like a pro! Reach out to people in the industry, especially those already working at Airalo. A friendly chat can give you insider info and maybe even a referral!
✨Tip Number 2
Prepare for the interview by diving deep into eSIM technology and Airalo's mission. Show us that you’re not just another candidate but someone who genuinely cares about revolutionising connectivity.
✨Tip Number 3
Practice your communication skills! Since we value clear and concise dialogue, make sure you can explain complex tech concepts simply. It’ll impress us during the interview!
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re serious about joining our team!
We think you need these skills to ace eSIM & Device Engineer in London
Some tips for your application 🫡
Show Your Passion: When writing your application, let your enthusiasm for the eSIM and device engineering shine through! We want to see that you genuinely care about the work you do and how it impacts global connectivity.
Tailor Your CV: Make sure to customise your CV to highlight relevant experience in mobile device configuration and testing. We love seeing how your skills align with our needs, so don’t hold back on showcasing your expertise!
Be Clear and Concise: In your written application, keep your communication clear and to the point. We appreciate good interlocutors who can convey their thoughts effectively, so avoid fluff and get straight to the important stuff!
Apply Through Our Website: Don’t forget to apply via our website! It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity. We can’t wait to hear from you!
How to prepare for a job interview at Airalo Group
✨Know Your eSIM Inside Out
Make sure you brush up on your knowledge of eSIM technology and the GSMA SGP.22 standards. Familiarise yourself with the specific responsibilities of the role, like managing device settings and conducting rigorous testing on various devices. This will show that you're not just interested in the job, but that you understand the technical aspects involved.
✨Showcase Your Problem-Solving Skills
Prepare to discuss past experiences where you've tackled complex issues, especially related to mobile devices or OTA configurations. Think of examples where you had to debug communication issues or optimise profile sizes. This will demonstrate your analytical mindset and problem-solving abilities, which are crucial for this role.
✨Communicate Clearly and Concisely
Since clear communication is key, practice articulating your thoughts on technical topics in a straightforward manner. You might be asked to explain complex concepts, so being able to break them down into simpler terms will highlight your communication skills and make you stand out as a candidate.
✨Embrace Cultural Differences
Given Airalo's diverse team spread across multiple countries, be prepared to discuss how you can contribute to a collaborative environment. Share experiences where you've worked with people from different backgrounds and how you’ve embraced those cultural differences. This will show that you align with their values of diversity and inclusion.
