Voice Core Engineer Job at Vodafone (Bucuresti)

Manager_2L Voice Core Engineer

We are seeking a skilled professional to support, manage, and optimise IMS and C...

Location

India , Bangalore

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Strong understanding of IMS architecture (CSCF, MTAS, HSS, SBC) and CS Core nodes (MSC, MGW)
Skilled in telecom protocols such as SIP, Diameter, SS7, SIGTRAN
Experienced in VoLTE/VoNR call flows and IMS registration
Familiar with virtualisation platforms (VMware, OpenStack) and Linux systems
Capable of troubleshooting using tools and scripting (Python/Bash preferred)
Comfortable working in high‑pressure, 24x7 operational environments
Effective communicator with strong collaboration abilities
Adaptable to emerging technologies including NFV, SDN, and Cloud IMS
Holds a Bachelor’s degree in Telecommunications, Electronics, or Computer Engineering
Possesses 8–12 years of experience in IMS and CS Core operations, ideally across multi‑vendor environments

Job Responsibility

Core Network Support: Support IMS network elements including Ericsson MTAS, CSCF, HSS, IPWorks, MSC, MGW, SBC, and STP
Maintain service availability, performance, and compliance with operational processes
Participate in 24x7 on‑call rotation for proactive and reactive support
Assist in service introduction and handle supplier engagement
Incident & Problem Management: Respond promptly to service degradations and major incidents
Perform root cause analysis and workarounds to minimise service disruption
Collaborate across teams to ensure timely resolution
Performance & Availability Management: Act as system owner, overseeing platform support
Monitor KPIs, analyse performance trends, and support improvement forums
Review network changes to safeguard service integrity

What we offer

Opportunity to work on cutting‑edge IMS and CS Core technologies within a global telecommunications environment
Exposure to multi‑vendor systems and advanced network architectures
Collaborative work with cross‑functional teams and international partners
Opportunities to contribute to optimisation initiatives and service enhancement
Experience in end‑to‑end lifecycle management of network platforms

Voice Core Senior Engineer

We are seeking a Voice Core Engineer to design and deliver advanced Voice Core i...

Location

Romania , Bucuresti

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

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

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

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

Product Engineer, Core & Connectivity

We build software for Airbnbs to rent themselves, with a state-of-the-art produc...

Location

Salary:

123995.91 - 154319.69 USD / Year ▼

Hospitable

Expiration Date

Until further notice

Requirements

3+ years of software engineering experience, with a focus on backend technologies
Significant experience with Laravel, PHP 7+, MySQL, and testing pipelines in a deployed web application used by paying customers
An eye for testable, maintainable, and intuitive code, but also the mentality of 'Code is a means, not an end,' avoids unnecessary abstraction
The ability to think through non-obvious usage scenarios and explore ripple effects within complex systems
High degree of empathy both toward customers and teammates
Exceptional communication skills - especially written
Self-motivated and able to make decisions when surrounded by uncertainty

Job Responsibility

Dive deep into foundational codebase to develop new features, maintain existing features, and improve platform stability and partner connectivity
Know current OTA connections inside-out to get maximum benefit out of partner APIs, improve downtime resilience, and increase edge-case coverage
Implement and maintain integrations with future connectivity partners
Add voice to product shaping discussions, ship new core platform features 0→1, and iterate based on customer feedback
Use software engineering chops to build magical user experiences
Partner with product, sales, customer success, and other engineers to develop and ship features
Work within monolithic codebase on Kubernetes-powered infrastructure-as-code stack
Implement and use observability tooling to track and debug post-deployment
Seek out and remedy performance/resource issues and feature bugs
Refactor core platform and connectivity code

What we offer

A supportive, radically transparent, and caring team environment
Options into company equity through $HOST token (RSU's) with grant value up to $76,026.50
Eligible for up to an additional $284,456.00 per year in Performance Share Units
For US employees: healthcare (including EPO, PPO and HSA), 401(k)
35 days off per year encouraged and parental leave
Complimentary mental health and emotional support with therapists on call through Slack by Spill
Earn virtual coins through peer recognition platform and redeem through gift cards, donations, or monetary rewards

Fulltime

Solutions Engineer, Core Enterprise

We are seeking a solutions engineer to partner with our Enterprise customers and...

Location

United States , San Francisco; New York

Salary:

221000.00 - 245000.00 USD / Year

OpenAI

Expiration Date

Until further notice

Requirements

8+ years of experience in a technical pre-sales or similar role
4+ years selling to Enterprise customers, managing C-level technical and business relationships with complex global organizations
thorough understanding of IT security principles and customer requirements for technical B2B SaaS products, with experience providing higher-level security and compliance support
foundational training in programming languages like Python or Javascript
delivered prototypes of Generative AI/traditional ML solutions
knowledge of network/cloud architecture
effective presenter and communicator who can translate business and technical topics to all audiences, including senior leaders
own problems end-to-end and are willing to pick up whatever knowledge you're missing to get the job done
humble attitude, an eagerness to help your colleagues, and a desire to do whatever it takes to make the team succeed

Job Responsibility

Deliver an exceptional pre-sales customer experience for Enterprise prospects and customers by providing technical expertise, outlining the value proposition, and answering product, API, and LLM-related questions
Demonstrate how leveraging OpenAI’s suite of products can meet customers’ business needs and deliver substantial business value, including building and presenting demos, scoping use cases, recommending architecture patterns, and providing in-depth technical advisory
Create and maintain documentation, guides, and FAQs related to common questions and requirements discovered during the pre-sales process
Develop and nurture strong customer relationships during the evaluation, validation, and purchasing process
Foster customer advocacy and represent the voice of the customer with internal teams by gathering and relaying customer feedback, identifying themes across customers, and incorporating them into product planning
Serve as the first line of defense for security and compliance questions, explaining standardized collateral, guiding customers toward relevant resources, and escalating complex requirements to the appropriate teams

What we offer

Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
401(k) retirement plan with employer match
Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time (1 hour per 30 hours worked, or more, as required by applicable state or local law)
Mental health and wellness support
Employer-paid basic life and disability coverage
Annual learning and development stipend to fuel your professional growth
Daily meals in our offices, and meal delivery credits as eligible

Fulltime

Senior Operations Engineer, Voice Switching Support

We are looking for a Senior Operations Engineer, Voice Switching Support to join...

Location

United States , Charlotte

Salary:

Not provided

Brightspeed

Expiration Date

Until further notice

Requirements

Extensive knowledge and experience in architecture, interoperability, operations, growth, maintenance, and life cycle of DMS-10 and legacy TDM switching systems
Subject matter expert in Nortel DMS switching applications and associated technologies and configurations
Successful demonstration of improvements to network reliability
Proficiency in interpersonal communications, particularly with up and downstream personnel at all company levels
Ability to effectively communicate across all levels of the business, i.e., suppliers, executive, market unit, technology group, cross-functional work groups, and industry entities
Effective oral, written and presentation skills, including proficiency in the Microsoft Office program suite
Effective leadership skills, including demonstration of training and/or mentoring activities and subsequent positive impacts
4-year degree in an Engineering, IT, or Telecommunications field or equivalent work experience

Job Responsibility

Proactive technical leadership regarding issues related to service assurance and delivery, network reliability, and customer satisfaction
High level analysis and identification of unique, complex, or chronic issues in the switch network
Technical management and direction in the resolution of real time, network-affecting core and peripheral elements, applications, or issues involving malfunction, degradation, and/or failure situations
Training and mentorship of lower-level Technical Support engineers and technicians, including the production and delivery of job aids, operational processes and procedures, and technical management methodologies
In-depth subject matter expertise in hardware/software/database operations for the Nortel DMS-10 switching systems
Subject matter expertise in the production of Technical Support bulletins and alerts
Reviewing and approving or deny/correct Methods of Procedures (MOP), Network Change Management System documents (NCMS) Task Orientated Practices (TOP), Product Change Notices (PCN), Vendor Manuals, Standard Configurations, etc. relative to quality, accuracy, and reliability
Technical direction of personnel and contractors in Field Operations and Core and Customer Installation, Repair, and Maintenance Centers
Engagement with manufacturers, suppliers, industry representatives, and entities
Availability and ability to perform 7x24x365 and on- call duties with limited assistance

What we offer

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

Fulltime

Senior Manager_2L Voice Core Specialist

We are seeking a skilled individual to oversee, support, and enhance IMS and CS ...

Location

India , Bangalore

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Skilled in IMS architecture (CSCF, MTAS, HSS, SBC) and CS Core network components (MSC, MGW)
Experienced in telecom protocols including SIP, Diameter, SS7, and SIGTRAN
Knowledgeable in VoLTE or VoNR call flows and IMS registration procedures
Comfortable working in virtualised environments such as VMware, OpenStack, and Linux OS
Able to apply troubleshooting skills using tools and scripting languages (Python or Bash preferred)
Adaptive, collaborative, and able to work effectively within a 24x7 operational environment
Holds experience working in multi-vendor environments (Ericsson, Huawei, Nokia)
Possesses a Bachelor’s degree in Telecommunications, Electronics, or Computer Engineering, with relevant certifications preferred

Job Responsibility

Support and manage IMS and CS Core network elements such as MTAS, CSCF, HSS, IPWorks, MSC, MGW, SBC, and STP
Safeguard service availability through maintenance, monitoring, and resolving incidents
Participate in a 24x7 on-call rotation to ensure timely support
Analyse service failures, conduct root cause analyses, and implement sustainable resolutions
Monitor KPIs, identify performance trends, and propose improvements to protect network availability
Perform regular health checks, resilience assessments, and proactive service assurance tasks
Configure new number ranges, support fraud barring requirements, and assist in isolating network nodes when needed
Support supplier and vendor management, SLA adherence, and audit preparations
Contribute to change management processes ensuring risk-free implementation of planned changes
Assist in software lifecycle management, including testing and rollout of new software versions

What we offer

Opportunities to gain exposure to advanced IMS and CS Core technologies and multi-vendor environments
Experience collaborating with global teams and industry-leading partners
Engagement in innovative transformation initiatives across the telco domain
A supportive environment encouraging knowledge sharing, upskilling, and professional growth

Fulltime

Senior Operations Engineer, Voice Switching Support

We are looking for a Senior Operations Engineer, Voice Switching Support to join...

Location

United States , Charlotte

Salary:

Not provided

Brightspeed

Expiration Date

Until further notice

Requirements

Extensive knowledge and experience in architecture, interoperability, operations, growth, maintenance, and life cycle of DMS-10 and legacy TDM switching systems
Subject matter expert in Nortel DMS switching applications and associated technologies and configurations
Successful demonstration of improvements to network reliability
Proficiency in interpersonal communications, particularly with up and downstream personnel at all company levels
Ability to effectively communicate across all levels of the business, i.e., suppliers, executive, market unit, technology group, cross-functional work groups, and industry entities
Effective oral, written and presentation skills, including proficiency in the Microsoft Office program suite
Effective leadership skills, including demonstration of training and/or mentoring activities and subsequent positive impacts
4-year degree in an Engineering, IT, or Telecommunications field or equivalent work experience

Job Responsibility

Proactive technical leadership regarding issues related to service assurance and delivery, network reliability, and customer satisfaction
High level analysis and identification of unique, complex, or chronic issues in the switch network
Technical management and direction in the resolution of real time, network-affecting core and peripheral elements, applications, or issues involving malfunction, degradation, and/or failure situations
Training and mentorship of lower-level Technical Support engineers and technicians, including the production and delivery of job aids, operational processes and procedures, and technical management methodologies
In-depth subject matter expertise in hardware/software/database operations for the Nortel DMS-10 switching systems
Subject matter expertise in the production of Technical Support bulletins and alerts
Reviewing and approving or deny/correct Methods of Procedures (MOP), Network Change Management System documents (NCMS) Task Orientated Practices (TOP), Product Change Notices (PCN), Vendor Manuals, Standard Configurations, etc. relative to quality, accuracy, and reliability
Technical direction of personnel and contractors in Field Operations and Core and Customer Installation, Repair, and Maintenance Centers
Engagement with manufacturers, suppliers, industry representatives, and entities
Availability and ability to perform 7x24x365 and on- call duties with limited assistance

What we offer

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

Fulltime

Packet Core Support Engineer

Myticas is looking for a Packet Core Support Engineer. This person will support ...

Location

United States , Memphis

Salary:

Not provided

Myticas Consulting

Expiration Date

Until further notice

Requirements

Hands-on experience in managing, operating and supporting core network nodes (EPC/IMS/5GC) for both data and voice services
Solid experience in interfaces and protocols used in 4G and 5G core networks (integration/troubleshooting)
Solid experience in Kubernetes and container environments for operating and managing Containerized Network Functions
Experience in 4G and 5G packet core operation and architecture
Experience in SDM operation and architecture
Knowledge of CNF operation and lifecycle management
O&M experience in mme, spgw, amf, smf, upf, nrf
O&M experience in pcrf, hss, pcf, udm, ausf, udr
O&M experience in cscf, TAS, sbc, mrf

Job Responsibility

Perform first level of troubleshooting/response for anomalies found in the above elements
Raise tickets with care for issues that he couldn’t solve
Support activities/migrations/upgrades on behalf of customer (those are normally carried out by care team)
Prepare/review MOPs of activities
Participate in ORT/ATP
Provide incident reports and kpi reports (if this is covered in the sow for RE)

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Voice Core Engineer

Job Description

Job Responsibility

Requirements

What we offer

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