Senior SIM Engineer Job at Ryanair - Europe's Favourite Airline (London Stansted)

Senior Software Engineer

Hologram is building the future of IoT connectivity, delivering internet access ...

Location

United States

Salary:

185000.00 - 235000.00 USD / Year

Hologram

Expiration Date

Until further notice

Requirements

5-8+ years building, testing, and deploying production software
Backend-focused with full-stack capabilities—deep experience in backend systems and data processing
Portfolio of work you can showcase and discuss
Experience with modern technologies: Python, Go, Rust, JavaScript, TypeScript, React, Next.js, Angular
Proven experience with high-scale systems: databases, cloud infrastructure (AWS), API development, software architecture

Job Responsibility

Data Pipeline Architecture: Design and optimize systems processing billions of usage records monthly
Real-time Processing: Build robust backend services using Kafka for high-throughput, low-latency data streams
Customer Dashboard Features: Develop interfaces presenting detailed status and analytics for thousands of customer SIM cards
API Development: Create and maintain APIs powering both internal systems and customer integrations
Full-Stack Solutions: Implement features spanning database optimization to user interface enhancements
Own end-to-end delivery: Lead assigned projects from conception to launch, understanding both the technical "how" and business "why" behind every feature
Shape product direction: Collaborate directly with product and design teams, using your technical expertise to guide priorities and requirements
Drive technical excellence: Contribute to architectural decisions that balance existing patterns with innovative solutions for scale while mentoring teammates and elevating overall code quality

What we offer

All employees receive equity with transparent salary and equity formulas across the team
Flexible health coverage (up to 100% employee, 95% dependents)
Unlimited PTO with 2 weeks mandatory
Monthly mental health days
14 weeks paid parental leave
$1,000 hiring bonus plus $200 monthly budget for home office, books, courses, or coworking
Life and disability insurance fully covered
401(k) plan
Professional Development Fund after one year

Fulltime

Senior Network Test Engineer

Inabia is seeking a highly skilled Senior Network Test Engineer to support advan...

Location

Germany , Munich

Salary:

Not provided

Inabia Solutions & Consulting

Expiration Date

Until further notice

Requirements

Experience in LTE/5G and/or WiFi network testing, broadband CPE testing, or IP networking validation
Strong understanding of IP networking principles (subnetting, routing, VLANs, NAT, firewall rules, DHCP, DNS)
Hands-on experience with test tools (e.g., Wireshark, iPerf, tcpdump, TEMS, X-Cal, Actix, QXDM)
Able to build, configure, and troubleshoot complex testbeds across wireless and IP domains
Strong analytical and troubleshooting skills across RF, IP, and application layers
Excellent documentation and communication skills
Must possess the legal right to work in Germany (e.g., EU citizen, German work permit, EU Blue Card)

Job Responsibility

Perform end-to-end testing for LTE, LTE-A, 5G NSA/SA, and WiFi 5/6/6E
Validate attach/registration, CA, EN-DC, VoLTE/VoWiFi, VoNR, handovers, fallback, and mobility scenarios
Conduct throughput, latency, jitter, and packet-loss testing using standardized benchmarking methods
Analyze RAN KPIs and troubleshoot coverage, mobility, capacity, and interference issues
Test residential and enterprise broadband devices including routers, gateways, mesh WiFi systems, CPEs, modems, and home networking equipment
Execute performance, reliability, and stability tests on broadband/WAN connectivity (fiber, DSL, wireless broadband, Ethernet backhaul)
Validate LAN/WAN configuration workflows, device onboarding, and end-to-end connectivity
Configure and test IPv4/IPv6 addressing, subnetting, VLANs, DHCP, DNS, NAT, port forwarding, and firewall rules
Validate VPN tunnel setup and performance (IPsec, SSL, WireGuard, OpenVPN)
Troubleshoot routing, DNS resolution issues, gateway conflicts, and Layer 2/Layer 3 connectivity

Fulltime

Senior Network Test Engineer

Inabia is seeking a highly skilled Senior Network Test Engineer with deep hands-...

Location

United States , Bellevue, WA; Redmond, WA

Salary:

Not provided

Inabia Solutions & Consulting

Expiration Date

Until further notice

Requirements

5+ years in telecom or advanced network testing (LTE/5G/WiFi/broadband)
Strong knowledge of IPv4/IPv6, subnetting, routing, VLANs, DHCP, DNS, NAT, VPNs, and enterprise network configuration
Hands-on experience with broadband gateways, home routers, WiFi APs, 5G/LTE CPEs, or ISP-grade network equipment
Proficiency in QXDM, QCAT, Wireshark, tcpdump, iPerf, TEMS, X-Cal, or similar tools
Experience testing VoLTE/VoWiFi, IMS, SIP/RTP traffic, mobility, call flows, and service continuity
Proven ability to build, manage, and debug complex test environments
Strong documentation, troubleshooting, and communication skills
Must be legally authorized to work in the United States without sponsorship

Job Responsibility

Conduct comprehensive testing across LTE, LTE-A, 5G NSA/SA, WiFi 5/6/6E, and residential/enterprise broadband access technologies
Validate throughput, latency, jitter, packet loss, QoE, and service continuity across fixed and mobile access
Test and evaluate broadband gateways, CPEs, modems, routers, mesh systems, and indoor coverage solutions
Perform multi-RAT test scenarios: attach, registration, CA, EN-DC, VoLTE/VoWiFi, VoNR, handovers, fallback, and failover
Configure and test IPv4/IPv6 addressing, subnets, VLANs, DHCP, NAT, DNS, and routing behaviors
Validate VPN configurations (IPsec, SSL, WireGuard, OpenVPN) including tunnel setup, failover, and throughput impacts
Execute test cases involving LAN/WAN routing, QoS, firewall rules, port forwarding, and enterprise-grade security controls
Analyze L2–L7 network behavior using tcpdump, Wireshark, iPerf, TR-069/USP, SNMP, syslogs, IP routing tables, and traceroute/pathping
Build and maintain multi-node testbeds including 5G CPEs, WiFi APs, broadband gateways, SIM configs, VPN endpoints, and core network simulators
Integrate various network elements (UEs, routers, switches, servers) and configure network services to replicate real enterprise and residential environments

Fulltime

New

Senior Flight Sim Engineer

Ryanair is currently recruiting for a Senior Flight SIM Engineer to join our tea...

Location

United Kingdom , East Midlands Airport

Salary:

Not provided

Ryanair - Europe's Favourite Airline

Expiration Date

Until further notice

Requirements

Recognized Apprenticeship or Adult Training in electronic and avionic engineering
A background in aviation/flight simulation
Specializing in Digital Flight Simulation, Complex Data Networking and Process Control using Distributed Micro processing
At least 4-6 years’ experience in military and/or civilian Flight Simulation for the experienced positions

Job Responsibility

Perform daily readiness checks to ensure FSTD is ready for daily operation
Maintain Flight Simulator Equipment to EASA FSTD-A Level ‘D’ Standard
Maintain the Quality System in accordance with EASA Requirements
Review and implement aircraft and vendor service bulletins
Install and verify aircraft loadable software
Liaise with aircrew at the technical level on aircraft systems to resolve defects
Liaise with technical inspectors at initial and recurrent qualifications
Liaise with FSTD vendors to rectify defects requiring vendor support
Run and check the scheduled Quality Test Guide (QTG) Tests
Design and embody modifications on the simulators to maintain compatibility with Ryanair fleet using hardware and software engineering skills

What we offer

Competitive salary
Discounted and unlimited travel to over 230 destinations
Death in Service Benefit – Up to 2 times of annual basic salary
Unrivalled career progression

Fulltime

Senior Hardware/Software Connectivity Engineer - e-Sim

The Connectivity eSIM Electrical Engineer will define, develop, deliver and mana...

Location

United States , Belmont, CA

Salary:

165000.00 - 195000.00 USD / Year

Volkswagen AG

Expiration Date

Until further notice

Requirements

Analytical and conceptual thinking
Communication skills - interpersonal, presentation and written
Excellent teamwork ability and strong interpersonal skills
Creative and strategic problem-solving mindset – exhibit good judgement in making decisions.
Ability to work well independently with minimal supervision, proven ability to multi-task
Self starter
CA driver license
Excellent proficiency in English language
Knowledge of communication HW & SW architecture and hardware development processes.
Knowledge of GSMA eSIM technologies such as SGP.02, SGP.22 and SGP.32

Job Responsibility

System Development and Management – (60%) Working on the development of connectivity functions
Contribute to the development, launch and production of connectivity functions and ECUs, overseeing all steps of the process and coordination with product/design/contract manufacturers.
Contribute to specification and design of connectivity units and IT backend for automotive systems.
Work with internal customers to understand and specify communication requirements and deliverables, including safety and security as well as regulatory requirements
Work with software, component or chipset suppliers to select and support hardware as well as solutions.
Contribute and coordinate to establish Cyber Security and regulatory requirements while developing EE hardware / connectivity platforms
Operational Management - (40%) Ownership of the remote SIM provisioning solution in NAR markets
Own the relationship with network operator, contract manufacturer, platform provider and lead strategic discussions and technical negotiations.
Monitor compliance with relevant regulations, statutes, Board Directives, process standards (including in respect of Golden Rules and Product Compliance), procedural/operating instructions and occupational safety regulations using appropriate management controls (dual-control principle).
Identify and mitigate project technology risks and execution risks

What we offer

Eligibility for annual performance bonus
Healthcare benefits
401(k), with company match
Defined contribution retirement program.
Tuition reimbursement
Company lease car program
Paid time off

Fulltime

Sr. Staff Thermal Design and Modeling Engineer

The Enphase Energy Storage and Systems Innovation team in the office of the CTO ...

Location

United States , Austin

Salary:

110000.00 - 167000.00 USD / Year

Enphase Energy

Expiration Date

Until further notice

Requirements

BS/MS/PhD Mechanical Engineering or closely related discipline
Minimum experience: BS and 5+ years / MS and 3+ years / PhD with thermal design experience for a Senior Engineer
BS and 8+ years / MS and 6+ years / PhD and 3+ years thermal design experience for a Staff Engineer
BS and 12+ years / MS and 8+ years / PhD and 5+ years thermal design experience for a Sr. Staff Engineer
Significant experience designing active and passive thermal management solutions within a product and with key thermal components such as heat sinks, air flow systems, coolant systems, multi-phase cooling, phase change materials, and thermal interface materials
Excellent understanding of conduction, convection, and radiation
Experience with analytical approaches and simulation tools for thermal modeling (e.g., Solidworks Flow Sim, Fluent, Icepak, COMSOL, etc.)
High proficiency with an enterprise CAD package (Solidworks preferred)
Experience designing test plans, building experimental setups, collecting data, and analyzing results for thermal performance
Familiarity with design for manufacturability and reliability

Job Responsibility

Design, integrate, and validate thermal management solutions for Enphase energy storage and systems products
Build, update, and analyze computational models including heat transfer, combustion, and air flow to simulate thermal performance in energy storage and systems products
Specify key functional and performance requirements
design and execute verification test plans
Design high quality mechanical and electromechanical part and assembly designs efficiently and with good modeling practices
Produce 2D drawings and 3D CAD models, evaluate parts, and collaborate with a multi-disciplinary design team, suppliers, and contract manufacturing partners to develop product prototypes
Research, analyze, implement, and test advanced thermal management technologies to support innovative energy storage and system product designs
Complete documentation for design, testing, and analysis
Hands-on fabrication of electromechanical assemblies and prototypes
Work with a multi-disciplinary team to test and troubleshoot prototype designs

What we offer

bonus
equity
benefits

Fulltime

Senior Windows System Engineer

We are seeking a motivated and skilled Senior Windows System Engineer with stron...

Location

United States , Washington, DC

Salary:

Not provided

Bamboo Solutions Corporation

Expiration Date

Until further notice

Requirements

BS and 5+ years of experience in VMware administration (vSphere, ESXi, vCenter) and HP enterprise server hardware (ProLiant, BladeSystem, Synergy), including lifecycle management and component replacement. (4 years experience in lieu of degree)
Ability to obtain and maintain a Public Trust requiring U.S. Citizenship.
Strong background in Windows Server administration (Active Directory, Group Policy, patching, and hardening).
Experience managing Azure resources (VMs, virtual networks, storage accounts, hybrid connectivity).
Working knowledge of PowerShell scripting and automation.
Experience with monitoring and patch management tools.
Familiarity with networking fundamentals (TCP/IP, VLANs, DNS, routing).
Strong troubleshooting, documentation, and communication skills.

Job Responsibility

Administer and maintain VMware vSphere environments, including ESXi hosts, vCenter, virtual machines, clusters, and storage configurations.
Perform provisioning, patching, and lifecycle management of virtual machines and templates.
Manage and support Windows Server environments (2016/2019/2022) -- Active Directory, DNS, DHCP, Group Policy, and file/print services.
Administer and maintain HP ProLiant, BladeSystem, and Synergy servers, including firmware updates, hardware diagnostics, and performance tuning.
Perform hardware lifecycle tasks -- server builds, racking, configuration, and component replacement (disks, NICs, power supplies, etc.).
Utilize HP Integrated Lights-Out (iLO), OneView, and System Insight Manager (SIM) for monitoring and remote management.
Collaborate with network and storage teams to ensure optimal performance and capacity planning of virtual and physical infrastructure.
Support Azure IaaS and hybrid integrations, including VM deployment, and hybrid identity using Azure AD Connect.
Troubleshoot and resolve performance, connectivity, and configuration issues in virtualized and hardware environments.
Maintain detailed documentation, standard operating procedures (SOPs), and infrastructure diagrams.

What we offer

Competitive salary based on experience
Profit sharing distributed twice a year
15 days of paid time off and 10 paid holidays per year
401(k) with employer matching
Health and dental benefits
Opportunity to work with other talented technical professionals

Fulltime

Senior Network Test Engineer – Wireless, Broadband & IP

Inabia is seeking a highly skilled Senior Network Test Engineer to support advan...

Location

France , Paris

Salary:

Not provided

Inabia Solutions & Consulting

Expiration Date

Until further notice

Requirements

Professional experience in LTE/5G and/or WiFi testing, broadband/CPE validation, or IP networking
Strong understanding of IP networking fundamentals (routing, VLANs, NAT, firewalls, DHCP, DNS)
Hands-on experience with network test and diagnostic tools (Wireshark, iPerf, tcpdump, TEMS, X-Cal, Actix, QXDM)
Ability to design, configure, and troubleshoot complex testbeds across wireless and IP domains
Strong analytical, troubleshooting, and documentation skills
Fluent or professional working proficiency in English (French a strong plus)
Must have the legal right to work in France (EU/EEA citizen or valid French work authorization)

Job Responsibility

Wireless (LTE / 5G / WiFi) Testing: Perform end-to-end testing for LTE, LTE-A, 5G NSA/SA, and WiFi 5/6/6E networks
Validate attach/registration, carrier aggregation, EN-DC, VoLTE/VoWiFi, VoNR, handovers, fallback, and mobility scenarios
Execute throughput, latency, jitter, and packet-loss testing using standardized benchmarking methods
Analyze RAN KPIs and troubleshoot coverage, mobility, capacity, and interference issues
Broadband & CPE / Gateway Validation: Test residential and enterprise routers, gateways, modems, mesh WiFi systems, and CPE devices
Validate performance, reliability, and stability across fiber, DSL, wireless broadband, and Ethernet backhaul
Execute LAN/WAN configuration workflows, device onboarding, and end-to-end connectivity validation
IP Networking, Routing & VPN Testing: Configure and validate IPv4/IPv6, subnetting, VLANs, DHCP, DNS, NAT, port forwarding, and firewall rules
Test VPN technologies including IPsec, SSL VPNs, WireGuard, and OpenVPN
Troubleshoot Layer 2–Layer 7 connectivity using tools such as Wireshark, tcpdump, traceroute, and iPerf

Fulltime

Senior SIM Engineer

Ryanair - Europe's Favourite Airline

Location:
United Kingdom , London Stansted

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
January 13, 2026

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