Senior Core Network Engineer Job at Airalo

Senior DevOps Network Engineer

FinXL Professional Services is a leading IT consultancy that partners with clien...

Location

Australia , Sydney

Salary:

Not provided

FinXL

Expiration Date

Until further notice

Requirements

Extensive experience with F5 application delivery controllers (ADC)
Expertise with Python and a strong understanding of SDLC
Extensive experience in data centre networks, including Cisco ACI, switching, and routing
Experience with on-prem firewall platforms (e.g., Cisco, Fortinet, or Palo Alto)
Experience with CICD tools and pipelines (e.g., Azure DevOps Services)
Experience with infrastructure orchestration tools (e.g., Terraform or Ansible)
Familiarity with ITIL and change management processes

Job Responsibility

Design the process and build automation for software updates on Cisco and F5 products
Provide technical input into low-level detailed designs and implementation plans
Execute automation and network-related tasks within the infrastructure program
Contribute to the design and implementation of the Bank's automation platform
Engage with vendors and partner stakeholders to support Core Modernisation delivery
Facilitate change controls, scheduling, and communications aligned with ITIL processes
Communicate timeline updates effectively across the wider project program

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

Senior Software Engineer - Core

We are looking for a Senior Software Engineer to join the development team behin...

Location

Serbia , Belgrade

Salary:

Not provided

Azul Systems

Expiration Date

Until further notice

Requirements

Strong proficiency in C/C++
Core Java understanding (just a plus)
Experience with at least one scripting languages: sh/bash/ksh, powershell,..
Good understanding of operating system concepts: file systems, networking protocols, processes, IPC,..
Familarity with tooling: debuggers (gdb, windgb,..), profilers
Solid understanding of basic Computer Science concepts (data structures and algorithms)
Experience in low-level and system programming is a big plus: concurrent programming, synchronization, memory management, languages runtimes, memory standard libraries,..
Familarity with programming for Linux/Windows/macOS, Solaris is a plus
Experience with assembly for x86/Arm is a plus
BS/BA in Computer Science or equivalent

Job Responsibility

Contribute to the functionality, quality, and timely delivery of the builds of OpenJDK
Design and implement new product features and enhancements
Participate in OpenJDK development
Provide technical expertise to field engineering and customer services

What we offer

Equity Program - be part of the company success
Annual bonus based on company performance
Referral Program - bring your colleague we would all love to work with
IT Equipment - MacBook Pro or any other HW according to your preferences
Work-life balance - 5 weeks of holidays, 5 sick days, flexible working hours, 100% work from home also possible
Offices in Belgrade City Centre - if you prefer
Most importantly you will work with top experts worldwide who contribute to the Java ecosystem

Fulltime

Senior Software Engineer - Core

We are looking for a Senior Software Engineer to join the development team behin...

Location

Czechia , Prague

Salary:

Not provided

Azul Systems

Expiration Date

Until further notice

Requirements

Strong proficiency in C/C++
Core Java understanding (just a plus)
Experience with at least one scripting languages: sh/bash/ksh, powershell
Good understanding of operating system concepts: file systems, networking protocols, processes, IPC
Familarity with tooling: debuggers (gdb, windgb), profilers
Solid understanding of basic Computer Science concepts (data structures and algorithms)
Experience in low-level and system programming is a big plus: concurrent programming, synchronization, memory management, languages runtimes, memory standard libraries
Familarity with programming for Linux/Windows/macOS, Solaris is a plus
Experience with assembly for x86/Arm is a plus
BS/BA in Computer Science or equivalent

Job Responsibility

Contribute to the functionality, quality, and timely delivery of the builds of OpenJDK
Design and implement new product features and enhancements
Participate in OpenJDK development
Provide technical expertise to field engineering and customer services

What we offer

Equity Program - be part of the company success
Annual bonus based on company performance
Referral Program - bring your colleague we would all love to work with
IT Equipment - MacBook Pro or any other HW according to your preferences
Work-life balance - 5 weeks of holidays, 5 sick days, flexible working hours, 100% work from home also possible
Offices in Prague City Centre - if you prefer
Most importantly you will work with top experts worldwide who contribute to the Java ecosystem

Senior Software Engineer - Core

We are looking for a Senior Software Engineer to join the development team behin...

Location

Armenia , Yerevan

Salary:

Not provided

Azul Systems

Expiration Date

Until further notice

Requirements

Strong proficiency in C/C++
Core Java understanding (just a plus)
Experience with at least one scripting languages: sh/bash/ksh, powershell
Good understanding of operating system concepts: file systems, networking protocols, processes, IPC
Familarity with tooling: debuggers (gdb, windgb), profilers
Solid understanding of basic Computer Science concepts (data structures and algorithms)
Experience in low-level and system programming is a big plus: concurrent programming, synchronization, memory management, languages runtimes, memory standard libraries
Familarity with programming for Linux/Windows/macOS, Solaris is a plus
Experience with assembly for x86/Arm is a plus
BS/BA in Computer Science or equivalent

Job Responsibility

Contribute to the functionality, quality, and timely delivery of the builds of OpenJDK
Design and implement new product features and enhancements
Participate in OpenJDK development
Provide technical expertise to field engineering and customer services

What we offer

Equity Program - be part of the company success
Annual bonus based on company performance
Referral Program - bring your colleague we would all love to work with
IT Equipment - MacBook Pro or any other HW according to your preferences
Work-life balance - 5 weeks of holidays, 5 sick days, flexible working hours, 100% work from home also possible
Offices in Yerevan City Centre - if you prefer
Most importantly you will work with top experts worldwide who contribute to the Java ecosystem

Fulltime

Senior Engineer (Power Engineer)

Brightspeed is seeking a Senior Engineer (Power Engineer) to design, implement, ...

Location

United States , Charlotte

Salary:

Not provided

Brightspeed

Expiration Date

Until further notice

Requirements

Ideal candidate located in the North region (WI, MI, IL, IN, OH, MO)
Associate degree or equivalent education in Electrical Engineering, Power Systems Engineering, or related field, or equivalent work experience
5+ years of experience designing DC power systems in telecommunications, engineering, network planning or equivalent
Strong knowledge of -48V DC systems, rectifiers, batteries, grounding, and bonding
Proficiency with one-line diagrams, load calculations, and design packages
Familiarity with Telcordia, NEC, OSHA, and industry best practices.
Knowledgeable and skilled in planning /engineering and reading technical construction drawings/documents
Understanding of transport and router equipment/technologies and protocols, along with layer 2 and layer 3 ethernet and transport networking
Product knowledge of Cisco and Nokia routers, Ciena and Fujitsu transport devices, Calix and Adtran access devices, localized power such as fuse panels and BDFB power bays, fiber management, and fiber optic modules
Knowledgeable and some experience in systems/tools such as SAP, IQGeo, CO Power Database, WMS, Service Now, Armor, One Control for Ciena 6500, Netsmart 1500 for Fujitsu, TNMS for Infinera, Smartsheet and Microsoft Office

Job Responsibility

Designing and reviewing DC power systems for Central Office and Core locations, including rectifiers, batteries, BDFB’s, PBD’s, distribution panels, inverters, automatic and manual generator transfer switches, grounding, fused, and unfused cabling)
Preparing and maintaining detailed engineering documentation—drawings, load calculations, and material specifications
Evaluating and standardizing power equipment and configurations for reliability and compliance
Collaborating with transport, OLT, and implementation teams to align project schedules
Supporting installation and commissioning of power systems, including site reviews, troubleshooting, and test verification
Ensuring adherence to Brightspeed standards, Telcordia GR-513, NEC, and applicable safety and compliance codes
Tracking power capacity, utilization, and redundancy to support network growth
Conducting preventive maintenance programs and power audits
Providing input to RFPs, vendor evaluations, and technology pilots for DC power modernization efforts
Conducting load analysis, redundancy planning, and capacity forecasting to meet future network demands as required to ensure sufficient backup power

What we offer

competitive medical, dental, vision, and life insurance
an employee assistance program
a 401K plan with company match and a host of voluntary benefits

Fulltime

Senior RF Engineer

Managing deliverables and developing network solutions based on the customer’s g...

Location

United States , Plano

Salary:

Not provided

MobileNet Services

Expiration Date

Until further notice

Requirements

M.S. in Engineering, Electronics, Computer Information Systems, Telecommunications or related field or 8+ years of cellular/ telecommunications experience
Must speak and write fluently in English
Candidates must be legal residents or authorized to work in the US for any employer
Work flexible hours and support night or weekend work as required

Job Responsibility

Managing deliverables and developing network solutions based on the customer’s growth plans, capacity constraints, new features and technologies
Responsible for gaining the skills to ensure the technical content on network projects by analyzing the customer’s requirements and ensuring that the network solutions proposed will meet the optimum needs of the Wireless customer
Provides support to customers for questions or issues and works to respond in a timely manner, typically within 24 hours if possible
Proactively seeks methods or solutions that will better a customer network or engineering processes
Is a member of the RF Engineering team and applies their technical knowledge to issues related to the development of the RF Network Design
Communicates knowledge internally to further develop MobileNet engineers while maintaining customer confidentiality requirements
Where applicable and able, helps MobileNet develop new business via any contacts made during projects assuming no risk at discrediting or competing with current core customers

Systems Engineer (Networking)

Altera, a member of the N. Harris Computer Corporation family, delivers health I...

Location

India

Salary:

Not provided

Altera Digital Health Inc. UK

Expiration Date

Until further notice

Requirements

3+ years of experience in core Network and Security
Good Experience in data Security operations (Administration / Configuration/ Troubleshooting/ Design)
Experience in designing, implementation, and management of large-scale enterprise networks with experience in network security, multi-vendor firewalls such as Checkpoint, Cisco ASA, Cisco Firepower, Fortinet, Sonicwall
Experience in configuration and implementation of network security tools like Web Application Firewall/Network Intrusion Prevention System/Firewall Analyzer/DDOS
Detailed understanding of L3 routing protocols OSPF & BGP
Multi-Vendor deployment experience preferred (Whitebox is a plus)
Experience on any firewall like Cisco ASA, Palo-Alto, checkpoint, Sonicwall etc.
Solid understanding of client/server, networking, and Internet technologies
Experience of networking technologies such as TCP/IP, BGP, OSPF, MPBGP, MPLS VPNs, VxLAN, Multicast
Experience of DMVPN, IPSEC and Encryption Standards, Network Security

Job Responsibility

Configures, maintains, and operates routers, switches, firewalls, wireless access points, load balancers, VOIP equipment, and monitoring tools
Installs physical equipment, connects cabling, dresses communications racks, powers devices per provided documentation
Oversees the proactive monitoring of the network infrastructure via monitoring tools, addresses alerts in a timely manner, and documents topologies and changes
Mentors, coaches, and knowledge shares with junior associates and peers
Is the escalation point for junior associates handling difficult incidents/requests
Independently processes routine requests for network services, access, and documentation
Independently troubleshoots and resolves major incidents, runs outage bridges, and seeks root cause analysis for complex network issues
Independently owns network infrastructure projects from concept to completion including requirements gathering, implementation, turn up, testing, and hand off of the technology solution to the business
Independently becomes a subject matter expert in one or more network specialty domain such as datacenter, firewall, wireless, load balancing, cloud networking, or VOIP
Contributes to the implementation of major network infrastructure projects in cooperation with senior engineers and peers

Senior Core Network Engineer

Airalo

Location:
Spain; United Kingdom

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
January 22, 2026

Looking for more opportunities? Search for other job offers that match your skills and interests.

Similar Jobs for Senior Core Network Engineer

Senior DevOps Network Engineer

Senior Network Test Engineer

Senior Software Engineer - Core

Senior Software Engineer - Core

Senior Software Engineer - Core

Senior Engineer (Power Engineer)

Senior RF Engineer

Systems Engineer (Networking)

Senior Core Network Engineer

Airalo

Location:Spain; United Kingdom

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:January 22, 2026

Looking for more opportunities? Search for other job offers that match your skills and interests.

Similar Jobs for Senior Core Network Engineer

Senior DevOps Network Engineer

Senior Network Test Engineer

Senior Software Engineer - Core

Senior Software Engineer - Core

Senior Software Engineer - Core

Senior Engineer (Power Engineer)

Senior RF Engineer

Systems Engineer (Networking)

Location:
Spain; United Kingdom

Category:
IT - Software Development

Contract Type:
Not provided

Job Posted:
January 22, 2026