CrawlJobs Logo

Senior Engineer – IMS

ericsson.com Logo

Ericsson

Location Icon

Location:
India , Noida

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided

Job Description:

We are looking for a Senior Engineer – IMS to join our team and lead the coordination, execution, and troubleshooting of high-level reactive maintenance activities in Core Network domains. You will be responsible for supporting complex technical issues beyond the scope of 1st level Operations, ensuring service continuity and adherence to processes like MSTOP.

Job Responsibility:

  • Perform configuration changes, hardware expansions, and troubleshooting activities for CS Core Nodes and IMS Core Nodes
  • Ensure all actions follow approved and standardized operational processes (MSTOP)
  • Conduct RCA (Root Cause Analysis) and prepare technical reports
  • Collaborate with cross-functional teams to drive issue resolution and network enhancements
  • Maintain documentation of configurations, issues, and resolutions

Requirements:

  • Bachelor’s degree in Electronics and Communication Engineering or related field
  • 7+ years in Core Network operations and support, particularly IMS/VoLTE
  • Strong knowledge of telecom protocols including SIP, H.248, SS7, ISUP, BICC, SIGTRAN, INAP, CAP, TCAP, MAP, SCCP, Diameter
  • Deep understanding of call flows in CS Core
  • Deep understanding of IMS / VoLTE architecture and operations
  • Ability to troubleshoot and resolve complex IMS and legacy network issues
  • Strong analytical and communication skills

Nice to have:

Relevant certifications in IMS, VoLTE, or Network Operations

Additional Information:

Job Posted:
January 16, 2026

Job Link Share:

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

Briefcase Icon

Similar Jobs for Senior Engineer – IMS

Senior Network Test Engineer

Inabia is seeking a highly skilled Senior Network Test Engineer with deep hands-...
Location
Location
United States , Bellevue, WA; Redmond, WA
Salary
Salary:
Not provided
inabia.com Logo
Inabia Solutions & Consulting
Expiration Date
Until further notice
Flip Icon
Requirements
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
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
Read More
Arrow Right
New

Senior Software Engineer

This position is for Hogan team and is responsible for developing high/low level...
Location
Location
India , Hyderabad
Salary
Salary:
Not provided
https://www.wellsfargo.com/ Logo
Wells Fargo
Expiration Date
February 02, 2026
Flip Icon
Requirements
Requirements
  • 4+ years of Software Engineering experience, or equivalent demonstrated through one or a combination of the following: work experience, training, military experience, education
  • Technology oriented B.E/B Tech Degree or equivalent advanced degree
  • 3+ years of experience in HOGAN, preferably in CIS
  • Understand the various functionalities of the CIS to ascertain the deviation in the current process
  • 4+ years of experience in programming using COBOL, JCL, CICS, IMS, DB2 & VSAM.
  • Good working experience on mainframe utilities like sort, REXX, fileaid, endeavor easytrieve etc.
  • Good working experience on debugging tools like Xpediter, abend aid etc
  • Good experience in leading small to medium project by providing technical leadership.
  • Demonstrated ability to translate business requirements and functional design into technical implementation.
  • Develop and maintain Hogan programs to specifications. Includes development of COBOL, JCL, IMS, CICS and DB2 program on HOGAN platform is Must. Perform unit testing and ensure functionality meets the business requirements.
Job Responsibility
Job Responsibility
  • Lead moderately complex initiatives and deliverables within technical domain environments
  • Contribute to large scale planning of strategies
  • Design, code, test, debug, and document for projects and programs associated with technology domain, including upgrades and deployments
  • Review moderately complex technical challenges that require an in-depth evaluation of technologies and procedures
  • Resolve moderately complex issues and lead a team to meet existing client needs or potential new clients needs while leveraging solid understanding of the function, policies, procedures, or compliance requirements
  • Collaborate and consult with peers, colleagues, and mid-level managers to resolve technical challenges and achieve goals
  • Lead projects and act as an escalation point, provide guidance and direction to less experienced staff
  • Analytic and excellent organizational skills
  • Excellent communication skills
  • Proactive and can work independently
  • Fulltime
!
Read More
Arrow Right
New

Senior Core Network Engineer

Location
Location
Spain; United Kingdom
Salary
Salary:
Not provided
airalo.com Logo
Airalo
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • I’ve been a Lead/Senior Engineer in a Tier 1 Carrier or Major NEP, managing massive subscriber scale
  • I’ve worked in a high-growth MVNO or MVNE environment, building flexible and agile core services
  • I’ve worked in smaller private networks or enterprise environments
  • Decoding ULR/ULA and Authentication flows on S6a
  • Troubleshooting GTP-C/GTP-U procedures on S5/S8 or S11
  • Debugging Gx or Gy Diameter interfaces to resolve quota or QoS issues
  • Managing flows across Iu-PS (3G) or EN-DC (5G NSA) signaling
  • Designing S-NAPTR records for MME/SGSN to discover PGW/SGW nodes
  • Managing ASN assignments and BGP peering for international roaming
  • Designing HSS/UDM profiles and APN configurations for specialized services (like IoT or IMS)
  • Fulltime
Read More
Arrow Right

Senior Engineer - Ericsson HLR/HSS

We are currently seeking a talented and dedicated individual to join our Ericsso...
Location
Location
India , Noida
Salary
Salary:
Not provided
ericsson.com Logo
Ericsson
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • B.E / B.Tech. in Electronics & Communications with at least 6-8 years of Experience in NTHLR/SDM Domain
  • Administrating Ericsson HLR/HSS/CUDB/CCDU Network and Support Systems
  • Good Technical Knowledge of the specific Ericsson HLR/HSS/CUDB/CCDU nodes viz. for NTHLR/SDM Network
  • Expertise on Protocols (i.e. SS7, INAP, TCAP, MAP, SCCP, http, Diameter signaling)
  • Expertise on Ercisson HLR/HSS/CUDB/CCDU and basic knowledge of IMS/PACO/MSS/MGW
  • Hands on experience on Ercisson HLR/HSS/CUDB/CCDU
  • 2G/3G/LTE/4G, VoLTE/IMS, call flows
  • Knowledge of hardware and software alarm & Trouble shooting
  • H/W functionality of units in Ericsson HLR/HSS/CUDB/CCDU Nodes
  • Performance & Characteristics of Ericsson HLR/HSS/CUDB/CCDU Network Nodes
Job Responsibility
Job Responsibility
  • Identify, analyze, and resolve network and service faults in HLR, HSS, CUDB, CCDU and connected nodes
  • Perform root cause analysis (RCA) for service failures such as registration issues, location update failures, authentication rejections, and roaming faults
  • Analyze signalling traces (MAP, CAP, Diameter, HTTP, SS7, SIGTRAN) using tools like Wireshark, Message Analyzer, or Ericsson’s internal trace tools
  • Handle customer trouble tickets (TTs), ensuring timely resolution and escalation where required
  • Continuously monitor node KPIs, alarms, and logs to detect performance degradation or anomalies
  • Proactively identify trends, repeating faults, and configuration issues affecting subscriber database health
  • Lead high-severity incident analysis (P1/P2) ensuring minimal downtime
  • Coordinate with vendor TAC, design teams, and cross-domain experts (EPC, IMS, OSS) for complex fault resolution
  • Document findings, RCA reports, and preventive recommendations
  • Support software upgrades, patches, and corrective maintenance for HLR/HSS/CUDB/CCDU nodes
Read More
Arrow Right

Voice Core Senior Engineer

We are seeking a Voice Core Engineer to design and deliver advanced Voice Core i...
Location
Location
Romania , Bucuresti
Salary
Salary:
Not provided
vodafone.com Logo
Vodafone
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • University degree in Telecommunications, IT, or a related field
  • Strong technical knowledge of telecom and IT domains
  • Deep understanding of Voice Core technologies and protocols as per 3GPP standards
  • Skilled in software lifecycle processes: planning, development, testing, implementation, and optimisation
  • Ability to work effectively in virtual teams and collaborate with external clients
  • Knowledge of interoperability and interfacing of information systems
Job Responsibility
Job Responsibility
  • Design software and hardware requirements for Voice Core systems, including MSS/MGW, STP, DRA, HSS, HLR, SBC, CSCF, TAS
  • Create detailed specifications for low-level design and ensure timely project delivery
  • Conduct integration testing for new software releases and define acceptance plans
  • Coordinate complex cross-functional projects for Voice Core systems tailored to client needs
  • Develop network evolution plans for hardware and software platforms
  • Prepare architectural documentation, testing scenarios, and project status reports
What we offer
What we offer
  • Hybrid way of working: 2 days per week/ 8 per month
  • Medical and dental services
  • Life and hospitalization insurance
  • Dedicated employee phone subscription
  • Take control of your benefits and choose any of the below options: MEAL TICKETS/ PRIVATE PENSION/VACATION VOUCHERS/ CULTURAL VOUCHERS within the budget
  • Special discounts for gyms and retailers
  • Annual Company Bonus
  • Ongoing Education – we continuously invest in you to ensure you have everything needed to excel on the job and enhance your skills
  • You get to work with tried and trusted web-technology
  • We let you write your own story by planning vacations: go for a trip, experience new things, have fun and enjoy your 23 days off
  • Fulltime
Read More
Arrow Right

Senior Devops/cloud Engineer

Do you have extensive experience in WebLogic V12, WebSphere V9, Informatica V10 ...
Location
Location
Canada , North York
Salary
Salary:
Not provided
https://www.randstad.com Logo
Randstad
Expiration Date
March 09, 2026
Flip Icon
Requirements
Requirements
  • 10+ years of experience in systems, data communications and telecommunication technology including experience with RedHat Enterprise Linux V7+, UNIX Solaris V10 and Mainframe IMS Connect, system software and System tools
  • Extensive experience in WebLogic V12, WebSphere V9, Informatica V10 configuration, customization, upgrading, and patching
  • Extensive experience in DevOps toolsets in Azure Cloud, including but not limited to, Docker, Ansible, Packer, Terraform, Azure DevOps Pipelines, OpenShift
  • Working knowledge and experience in git, including branching and merging strategies (e.g. git-flow), collaborating via pull request and practicing GitOps
  • Working knowledge and experience of designing and implementing infrastructure as code build automation using Terraform and immutable infrastructure with Ansible and Packer.
Job Responsibility
Job Responsibility
  • Monthly Performance Status Report (where applicable)
  • Review Technical Design
  • Revise Technical Design Based on Review
  • Develop automation scripts based on technical design
  • Implement & Promote to User Test environment
  • Implement & Promote Production environment
  • Document for Knowledge transfer
  • Provide support to the development of integration and data migration requirements
  • Provide support to the Q&A phase of the project
  • Provide stabilization support post the project go-live
What we offer
What we offer
  • Earn a competitive rate within the industry
  • Potential for extension
Read More
Arrow Right

Senior Platform Engineer (Network Support)

Do you love building and pioneering in the technology space? Do you enjoy solvin...
Location
Location
United States , Bloomington
Salary
Salary:
119400.00 - 136200.00 USD / Year
capitalone.com Logo
Capital One
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s Degree
  • At least 2 years of experience using build and deployment tools (Jenkins, GitHub, or Artifactory)
  • At least 2 years of experience with AWS
  • At least 2 years of Unix or Linux system administration experience
  • At least 2 years of experience with scripting (Python, SQL, JavaScript, Bash or Ruby)
Job Responsibility
Job Responsibility
  • Coordinate and or assist with lateral and horizontal groups. (eg. Networking, storage, proxy, etc.)
  • Update on status to manager and users through calls, IM, email and in-person communication
  • Identify and troubleshoot software and hardware failures and determine network problems
  • Diagnose and resolve incidents using and documenting procedures
  • Diagnose and resolve unique, nonrecurring problems associated with applications, software and operating systems
  • determine the source of problems and classify their level, priority and nature
  • Develop workaround for application issues if incident root cause cannot be determined and continue to investigate for root cause
  • Troubleshoot through phone, hardware and software and help users engage technical resources to resolve (Help Desk)
  • Determine and research user questions. Isolate and resolve information systems problems
  • Provide assistance with escalation of applications and resources outside of our control
What we offer
What we offer
  • comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being
  • performance based incentive compensation, which may include cash bonus(es) and/or long term incentives (LTI)
  • Fulltime
Read More
Arrow Right

Senior Core Network Engineer

We are looking for an expert engineer to lead the design, deployment, and expans...
Location
Location
Salary
Salary:
Not provided
airalo.com Logo
Airalo
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experience with a Tier 1 Carrier, Mobile-Operator, or Major Network Equipment Provider (NEP) background
  • Deep understanding of SGSN, GGSN, and HLR architecture
  • Extensive experience with PGW, HSS, SGW, and MME
  • Proficiency in 5G Non-Standalone (NSA), 5G Standalone (SA), and PCC
  • Hands-on experience with Diameter S6a (HSS-MME), Gx (PCRF-PGW), and Gy (OCS-PGW)
  • Strong knowledge of IP addressing, subnetting, OSPF/BGP routing, VRFs, and ASN management
  • Expert-level DNS resolution (A, AAAA, SRV, NAPTR), DHCP, and IPX/GRX management
Job Responsibility
Job Responsibility
  • Design and dimension the Packet Core (EPC/5GC) to ensure scalability for data growth
  • Manage roaming coverage with IPX/GRX providers, roaming sponsors, and direct bi-lateral agreements
  • Define specific network profiles and configurations for HSS/UDM subscribers, including QoS, AMBR, and APN subscriptions
  • Architect the DNS hierarchy for the mobile core, focusing on S-NAPTR records for MME/SGSN to discover PGW/SGW/UPF nodes
  • Plan and implement IP routing strategies, including ASN (Autonomous System Number) management and BGP peering for internet and roaming connectivity
  • Manage Access Point Name configurations for various service types, including IMS, Internet, and IoT
  • Perform deep-dive troubleshooting of signaling procedures across 3G (Iu-PS), 4G (S1-MME, S11, S5/S8), and 5G NSA (EN-DC)
  • Apply in-depth understanding of 3GPP standards for 3G, 4G EPC, and 5G NSA mobile data call-flows
  • Analyze and optimize critical flows, specifically Attach/Registration (Authentication vectors, ULR/ULA, Create Session) and Bearer Management (Dedicated bearer creation for VoLTE/QCI 1 and default bearers)
  • Utilize protocol analyzers such as Wireshark or Tektronix to decode ASN.1 based messages and Diameter signaling (Gx, Gy, S6a, S5, S8, GTP-C, GTP-U)
What we offer
What we offer
  • Health Insurance
  • work-from-anywhere stipend
  • annual wellness & learning credits
  • annual all-expenses-paid company retreat in a gorgeous destination & other benefits
  • Fulltime
Read More
Arrow Right