5G Core Developer Job at Rebaca (Kolkata)

Sr Engineer, Systems Architecture - 5G Core Packet Gateways

This role develops and evolves technical network and service architectures to su...

Location

United States , Bellevue

Salary:

100100.00 - 180600.00 USD / Year

T-Mobile

Expiration Date

Until further notice

Requirements

Bachelor's Degree plus 5 years of related work experience OR Advanced degree with 3 years of related experience
Acceptable areas of study include Computer Science or Engineering or related field
5+ years of technical engineering experience with focus on mobile or packet core networks
Experience with packet core technologies across 4G EPC and/or 5G core networks
Hands-on experience with packet gateway platforms (e.g., Cisco, Nokia or similar), including system configuration and deployment
Strong understanding of packet core interfaces and protocols such as HTTP/2, GTP, PFCP, and IP networking fundamentals
Experience supporting deployment and integration of network platforms in production environments
Familiarity with cloud-native or containerized environments (e.g., Kubernetes, OpenShift)
Strong troubleshooting skills using logs, traces, packet captures, and performance metrics
Experience with scripting or automation tools such as Python, Bash, or Ansible

Job Responsibility

Contribute to the design and implementation of packet core network solutions across 5G (SA/NSA) & 4G EPC environments, including SMF, UPF, SGW, and PGW
Design and support deployment of containerized packet core elements on platforms such as Kubernetes/OpenShift
Perform hands-on configuration and initial setup ("day 0") of packet core gateway platforms, including system bring-up, service provisioning, routing, and policy configuration
Support repeatable deployment and integration of packet core platforms into the network, working across engineering and operations teams
Design scalable and resilient solutions aligned with 3GPP standards and existing architecture frameworks
Collaborate with internal teams and vendors to translate business and service requirements into deployable network solutions
Analyze signaling and user-plane behavior to troubleshoot performance, interoperability, and service issues
Develop and maintain technical documentation including architecture designs, implementation procedures, and operational guidelines
Evaluate network simulations, test results, and platform performance to inform design improvements
Apply scripting and automation to improve deployment efficiency, configuration consistency, and operational workflows

What we offer

Annual stock grant
Employee stock purchase plan
401(k)
Free year-round money coaches
Medical insurance
Dental insurance
Vision insurance
Flexible spending account
Paid time off
Up to 12 paid holidays

Fulltime

Core Network Delivery Engineer

At Vodafone, we're not just shaping the future of connectivity for our customers...

Location

Italy , Pozzuoli

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Degree qualified
Fluent in Italian and English (at least B2/Upper Intermediate)
At least 2 years professional experience in Telecommunications
Knowledge of telecommunication principles and protocols
Expert in the engineering of core mobile networks for 2G, 3G, 4G and 5G technologies
Preferred experience with network virtualization and containerization solutions, as well as transport and networking technologies, including routing and switching protocols, and IPv4/6

Job Responsibility

Integrate Voice Core technologies and functions into Vodafone-managed networks
Define low-level designs
Support engineering and development of the Voice Core Network
Ensure quality, availability, and robustness
Perform acceptance tests for new software and network elements
Guarantee end-to-end integration including interconnect with other operators
Promote harmonization across countries
Oversee detailed planning, low-level design, configuration, and integration with mobile and fixed interconnected operators
Manage the lifecycle of systems within the Voice Core domain
Ensure hardware and software acceptance in the network

Operations Manager

We’re the team behind the UK’s telecom networks—building, upgrading, and keeping...

Location

United Kingdom , Livingston

Salary:

Not provided

Comex 2000 UK Ltd

Expiration Date

Until further notice

Requirements

Proven operational management experience within telecoms, fibre networks, utilities, or comparable field‑based infrastructure environments, with a strong emphasis on civils delivery
Demonstrated leadership capability managing multidisciplinary delivery teams and subcontractors across complex build programmes
Deep understanding of telecoms build methodologies, SSHEQ requirements, and regulatory compliance frameworks
Strong commercial awareness, including experience in budgeting, forecasting, and managing cost and delivery risks
Excellent communication and stakeholder management skills, with the ability to influence and collaborate effectively
Highly organised, capable of coordinating multiple concurrent projects in fast‑paced operational settings
Proficient in Microsoft Office and relevant operational management systems
Solid understanding of core civils construction techniques, including excavation, duct installation, chamber construction, and reinstatement activities
Knowledge of reinstatement standards (HAUC, SROH) and practical experience ensuring compliance with NRSWA requirements
Hands‑on experience with traffic management, including safe and compliant signing, lighting, and guarding arrangements

Job Responsibility

Lead day‑to‑day operational delivery across telecoms build and installation programmes
Ensure all projects meet KPIs for safety, quality, timelines, productivity, and budget
Maintain strong field presence to monitor progress, resolve issues, and support teams
Drive financial performance including forecasting, cost control, margin management, and subcontractor governance
Act as a senior operational contact for clients, local authorities, and key stakeholders
Ensure full SSHEQ compliance, including RAMS, audits, incident management, and quality assurance
Identify opportunities to improve efficiency, customer experience, and delivery performance
Lead, develop, and retain multi‑disciplinary teams, ensuring capability aligns with business needs
Manage multiple live telecoms projects, ensuring effective planning, prioritisation, and resource allocation

Fulltime

Networking Account Manager

Sales Specialists & Consultants are product, services, software or solution spec...

Location

Mexico , Mexico City

Salary:

Not provided

Hewlett Packard Enterprise

Expiration Date

Until further notice

Requirements

University or Bachelor’s degree preferred
Specialization in networking (Data Center, Wi-Fi/Switching, Routing, SASE, Firewalls and Private 5G)
Demonstrated achievement of progressively higher quota, diversity of business customer and higher level customer interface
Detailed knowledge of key customer types or customers on given products
Typically 6-10 years of experience in specialty sales
In depth knowledge about product, service, solution and differentiators between own offerings and what competitor’s offerings
Applies specialized technical product/service/ solution knowledge in working with account teams to screen and prioritize multiple leads for feasibility
Use knowledge in specialty, and consultative selling skills, to proactively help customers with making IT business decisions
Assesses solution feasibility from a technical and business perspective to determine “qualify-in”/“qualify-out” status
Solid communication and presentation skills within IT at the manager level

Job Responsibility

Actively prospects within accounts to discover or cultivate solutions sales opportunities within area of technical specialty (in close cooperation with the account manager
Manage sales pipeline
Formulate and expand solutions to generate additional product or service attachments and up sell revenue
Certain roles may also sell through the channel
Establish a professional, working, and consultative, relationship with the client, by developing a core understanding of the unique business needs of the client within their industry
Work with the client up to IT management level
Contribute to building of the pipeline by generating leads and referrals and new customer opportunities within specialty area
May focus on growing contractual renewals for small-to-mid size accounts with limited complexity, to higher-total contract-value renewals
Interface with both internal and external/industry experts to anticipate customer needs and facilitate solutions development
Build sales readiness and reduce client learning curve through effective knowledge transfer in area of specialization

What we offer

Health & Wellbeing
Personal & Professional Development
Unconditional Inclusion

Fulltime

Baseband Software Developer

We are looking for highly skilled 5G L1/L2 software designers to be part of our ...

Location

Canada , Ottawa

Salary:

101500.00 - 133350.00 USD / Year

Ericsson

Expiration Date

Until further notice

Requirements

Bachelor’s or Master’s degree in Computer Science, Telecommunications, Electronics, or related field
5+ years of experience in telecom software development with specialization in 4G/5G L1/L2
Strong proficiency in C/C++ and embedded systems programming
Solid understanding of 3GPP 5G NR standards and protocols
Experience in multi-core, multi-threading programming, and performance optimization
Experience in cloud-native and containerized network functions
Knowledge of O-RAN and virtualization technologies
Familiarity with AI/ML applications in telecom

Job Responsibility

Design, develop, and optimize high-performance 5G L1/L2 software modules
Collaborate with global teams on the full product development lifecycle
Innovate solutions for 5G NR capabilities with a forward-looking eye toward 6G readiness
Debug, test, and integrate features to meet stringent industry standards and operator requirements
Participate in design reviews, code reviews, and technical discussions to ensure best-practice implementations

What we offer

Choice of 3 medical and dental plan options
Core level coverage paid for fully by Ericsson
Group Retirement & Savings Program with automatic 2% company contribution into the Pension Plan
50% match of employee’s contribution into the Registered Retirement Savings Plan, up to 8% of the employee’s contribution (maximum of 4% match)
Total company contribution potential of 6%
Basic life insurance and basic accidental death and dismemberment coverage at two-times annual base pay at no cost
Short-term disability coverage
Stock Purchase Plan
Minimum of 18 days of accrued vacation per year
At least 3 personal days

Fulltime

Quality E2e & Core Performance Lead

This is a role within Mobile Network Quality function, ensuring mobile core netw...

Location

United Kingdom , London

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Deep understanding of Core network architecture and performance monitoring
In-depth understanding of mobile network technologies, including 2G (GSM), 3G (UMTS), 4G (LTE), and 5G NR, with a focus on mobile core network architecture (IMS, MMEs, GiLAN chains…) and performance characteristics
Expertise in mobile core optimisation techniques, such as TCP Optimisation techniques, traffic shaping, etc.
Knowledge of key mobile performance KPIs, such as call setup success rate (CSSR), drop call rate (DCR), throughput, latency, and coverage metrics, and how they correlate with customer experience indicators like rNPS
Ability to translate complex technical models and performance insights into clear, compelling narratives, tailored for both technical and non-technical audiences, enabling effective decision-making across the business
Experience mentoring technical teams, with the ability to guide junior analysts and reporting teams in analytical best practices, model development, and performance interpretation
Strong stakeholder engagement and cross-functional collaboration skills

Job Responsibility

Act as the subject matter expert on mobile performance, specialized in core aspect of it, within NQCXI department, enabling effective prioritization of wider Networks department actions to improve customer experience (rNPS) and achieve marketing claims (UK’s Best Network, etc.)
Represent NQCXI department in Networks engineering forums, building strong relationships, to provide timely information to NQCXI team on ongoing Core activities, and to provide impact analysis of said Core activities to everyone
Lead the analysis and provide regular insights into mobile core network performance deviations that impact customer experience and mobile network benchmarking results
Conduct E2E trace analysis of critical customer and network issues to identify root causes and drive resolution
Provide regular mobile core network performance reporting to the wider Networks department
Provide technical leadership and mentoring to junior analysts and mobile performance reporting teams within wider NQCXI department, fostering a culture of innovation and accountability
Support mobile network benchmarking and supplier performance initiatives with an end-to-end lens

What we offer

Excellent basic salary plus bonus and Vodafone benefits
Up to 28 days off plus bank holidays
Paid time for charity work
Discounts
Vouchers
Pension plan
Amazing learning tools
Top-notch parental leave policies

Fulltime

Monetization & Charging Senior Engineer

The Charging Service implements all the Tariff Plan, Promotions and Regulatory s...

Location

Greece , Athens

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

MSc/BSc in Computer Science or similar
Fluent in English
Analytical ability, creativity and problem-solving
Deep knowledge on IT and network protocols, including 5G SA architecture
Cloud (AWS/Azure/GCP) deployment, Kubernetes, Red Hat
Charging and Rating Services and Digital Services experience
DevOps process and tools (Harbor, Helm, Jenkins, GitLab, JMeter) and Programming skills and experience
Strong experience in managing complex and inter-functional projects
Knowledge in charging applications

Job Responsibility

Deliver harmonized convergent rating and charging solutions cross markets and cross vendors in line with the architectural and strategic guidelines
Coordinate cross European programs, both for the design phase and for the delivery phase ensuring compliance with deliverables, costs and quality
Research and develop new products and services leveraging the leading technologies of convergent rating and charging, in line with Vodafone Digitalization strategy
Design, Drive and Deliver the Convergent Charging Service (CCS) on Cloud Transformation program in the Market(s), leading CCS to a Cloud, 5G ready system
Design and Engineer the solution based on Cloud technologies, such as Containers, Open-Source components (Graphana, Kibana), CI/CD (Jenkins, JMeter)
Design and Engineer the software for complying with state-of-the-art Cyber Security guidelines and requirements
Design and Develop backend applications using technologies like JAVA, Python, etc
Designing PoC as well as designing and developing integrations based on opensource components and APIs using CI/CD process
Owns solution HLD and LLD including IP design. Chooses technologies and standards used for the underlying capabilities. Determines dimensioning and configuration data per node. Ensures security requirements are imbedded in the design
Design and integrate the new 5G Core with CCS for developing innovative monetization streams

What we offer

Award-winning work environment -certified #1 Top Employer in Greece
Competitive pay, bonus & remuneration package
Private Health & Medical Insurance
Hybrid way of working: a blend of remote and office-based working, including the option to work from abroad
Unlimited access to learning resources and trainings
Vodafone Parental Leave: 16 weeks of fully paid parental leave to all employees regardless of gender, sexual orientation or length of service
Spirit of Vodafone Day: one day each quarter dedicated to your personal development
Extra days off: Vodafone Day, Family Day, Volunteering Day
Office amenities (subject to the office location): such as restaurant, beauty corner, gym and parking
Special employee offers and discounts

Fulltime

Network Acceptance Coordinator

As a Network Acceptance Coordinator, you will play a pivotal role in ensuring th...

Location

Romania , Bucuresti

Salary:

Not provided

Vodafone

Expiration Date

Until further notice

Requirements

Experience in telecom networks: operations, delivery, integration, or testing
Proven track record in managing testing projects in complex environments with multiple stakeholders
Knowledge of telecom technologies: 2G, 4G, 5G, Core functions and fixed network technologies (e.g., DOCSIS, GPON, BNG, CPEs)
Familiarity with telecom service platforms: TV platforms, AAA, PKI, PCF, virtualization and container-based platforms
Understanding of project management methodologies
Proficiency in test management tools such as qTest, Jira, ALM, or similar
Strong English communication skills (verbal and written)
Analytical mindset, well-organised, and structured
Positive, proactive attitude with commitment to teamwork and cooperation

Job Responsibility

Coordinate and manage activities during the acceptance testing phase
Participate in requirements and design reviews to ensure testability and identify design defects
Create and execute test cases and regression tests to detect deviations between specifications and implementations
Implement test automation where applicable
Develop and manage test schedules to meet deadlines
Propose and contribute to process improvement initiatives
Collaborate with the Testing Lead to identify and mitigate risks affecting quality, using our QA framework

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

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5G Core Developer

Job Description

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