SIM and Device Engineer

KORE Wireless; Bradford; On-site; GBP 45,000 - 60,000; Full time

Job summary

A leading telecommunications company in Bradford is looking for a skilled SIM and Device Engineer. In this role, you will manage the development and lifecycle of SIM profiles and collaborate closely with various teams to ensure technological excellence. The ideal candidate should have a Bachelor's Degree in Engineering, expertise in new SIM architectures, and strong communication skills. Join us to drive innovation and technical support in the IoT domain.

Benefits

Competitive salary

Health benefits

Career development opportunities

Qualifications

• Bachelor’s Degree in Engineering or equivalent experience.
• Expertise in new SIM architectures including applets and cryptographic functions.
• In-depth knowledge of essential algorithms including 3DES and AES.

Responsibilities

• Manage KORE SIM profiles development and lifecycle.
• Create and validate new SIM & applet products.
• Lead issue resolution through cross-functional coordination.

Skills

Expertise in new SIM architectures

Knowledge of authentication algorithms

Experience with Wireshark

Understanding of network service provisioning

Passion for new technologies

Excellent communication skills

Education

Bachelor's Degree in Engineering

Tools

Wireshark

PCAP logging

Netscout

Job description

The SIM and Device Engineer role reporting to Senior Director SIM Engineering is responsible for delivery of technical specifications and manage the comprehensive delivery of SIM profiles and applets for SIM/ eSIM / eUICC / iSIM products. A thorough understanding of device, SIM, and network interactions and flows is essential, as you will play a pivotal role in ensuring KORE secures and retains substantial new business. Collaborating closely with KORE's Pre‑Sales, Sales, Product & Network Engineering teams, you must be outcome‑oriented, proficient in prioritization, and adept at managing stakeholder expectations. You will fault‑find various IoT applications, providing detailed technical expertise and summarizing issues simply. You'll coordinate cross‑functionally to resolve problems and create customer‑facing guides and reports.

Responsibilities

• Manage KORE SIM profiles development and it’s complete lifecycle from design all the way up to deployment.
• Create and maintain profile specs, validate new SIM & applet products, ensure interoperability with SIM and comm on IoT modules for product launch and go-to‑market activities.
• Develop and maintain the relationships with SIM manufacturers on a dayto‑day basis.
• Provide technical expertise by possessing a comprehensive understanding of devices, SIM cards, networks, and the associated tools for logging and fault diagnosis.
• Assist the SIM Engineering team and Product Management in implementing new technology trials (e.g. eUICC, 5G, iSIM), including sourcing test equipment and conducting quality assurance tests.
• Manage queries about SIM products and serve as the subject‑matter expert on SIM and applet capabilities for internal stakeholders.
• Help troubleshoot SIM‑related customer issues and advise customers on SIM and applet compatibility.
• Lead issue resolution through cross‑functional coordination to satisfactory closure, providing timely, responsive and consistently high‑quality support to stakeholders and customer troubleshooting calls.
• Manage time effectively – balancing priorities and workload through clear and consistent prioritization and decision making.
• Manage and report the status of issues – with clear ownership, next steps, and timescales; keep stakeholders informed and manage expectations.
• Close the loop on root cause analysis – using data to create actionable recommendations for longer‑term remediations/future product improvements.
• Actively contribute to KORE's knowledge‑management materials.

Required Qualifications

• Bachelor’s Degree in Engineering or equivalent experience.
• Expertise in new SIM architectures, SIM applets (e.g. Multi‑IMSI), key management, cryptographic functions, SIM secure elements, and SIM card applet development.
• In‑depth knowledge of authentication algorithms (e.g. Milenage), processes, and mechanisms, and of essential algorithms (e.g. 3DES, AES, RSA, ECC, etc.).
• Experience with Key Ceremony and proven experience of BAP/BAT process.
• Experience with Wireshark / PCAP logging, Netscout for network monitoring / call‑flow tracing (Comprion or SIMtrace, QXDM, hardware logs, AT commands / consoles).
• Understanding of 2G/3G/4G/5G network architecture, network service provisioning, Over the Air (OTA, SCP02, 80 and 81), Remote SIM Provisioning (RSP), and 3GPP protocols.
• In‑depth knowledge of industry standards: 3GPP 31.111, 31.102, ISO 7816, ETSI 102 221, 102 223, 102 671, GSMA SGP 02, 22, etc.
• Passion for working on new technologies in a fast‑paced and frequently changing environment.
• Ability to analyse and correlate test results, producing conclusions and recommendations to KORE’s Leadership team.
• Experience with technical writing including creating guides / technical reports.
• Excellent organizational, oral, and written communication skills.

Desired Qualifications

• Detailed understanding of core network design (Layer 4+).
• IoT module test / development experience (e.g. Quectel, uBlox, Telit).
• IoT device firmware development / test experience (e.g. Teltonika, customer‑specific).
• Experience with software development using Java, C and/or Python; SIM APDU / applet development / test experience.

KORE Values

• Customer Obsession – We earn trust through deep understanding and relentless commitment; we earn the trust of our customers and aim to delight them through our solutions – we want to be loved by our customers.
• Be the Spark – We lead with energy, creativity, and urgency. We don’t wait for change – we ignite it. We listen, engage, and encourage others to participate.
• Own the Outcome – We take accountability seriously – delivering on our promises to customers, teammates, and ourselves. We finish what we start. We think like owners and we’re frugal where it makes sense.
• Grit & Positivity – We face challenges head‑on – with resilience, optimism, and determination. We look at these situations as an opportunity to create a positive outcome.
• When we make a commitment, we deliver. We challenge those who do not meet their commitments. Challenge, debate, but be human.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

WORKING CONDITIONS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions. The employee must regularly sit; use hands to finger, handle, or feel; reach with hands and arms; communicate. Specific vision abilities required by this job include close vision.

Equal Employment Opportunity

KORE Wireless Group, Inc., is an Equal Opportunity Employer and Prohibits Discrimination and Harassment of any kind. KORE is committed to the principle of equal employment opportunity for all employees and to providing employees with a work environment free of discrimination and harassment. All employment decisions at KORE are based on business needs, job requirements and individual qualifications, without regard to race, color, religion, or belief, national, social, or ethnic origin, sex (including pregnancy), age physical, mental or sensory disability, HIV status, sexual orientation, gender identity and/or expression, marital, civil union, or domestic partnership status, past or present military service, family medical history or genetic information, family or parental status, or any other status protected by the laws or regulations in the locations where we operate. KORE will not tolerate discrimination or harassment based on any of these characteristics.