Senior Developer Wireless Simulators (O-RAN & 5G NR)

Experience: 5.00 + years

Salary: INR 2500000-6500000 / year (based on experience)

Shift: (GMT+05:30) Asia/Kolkata (IST)

Opportunity Type: Hybrid ()

Placement Type: Full time Permanent Position

(*Note: This is a requirement for one of Uplers client - Simnovus)

What do you need for this opportunity

Must have skills required:

O-RAN, ORAN, C, C++, DPDK

Simnovus is Looking for:

Simnovus is a software-first wireless technology company focused on accelerating the validation of 4G, 5G, NTN, and emerging wireless technologies. Our solutions are used by network equipment manufacturers, device companies, operators, and technology companies to test and validate wireless networks and devices.

The Role

We are seeking a Senior Developer to design and build high-performance, low-latency simulation engines for 5G NR and O-RAN networks. You will lead the development of emulator systems for O-RAN Radio Units (O-RUs) and User Equipment (UE), focusing on PHY and MAC layer implementations using C/C++ and DPDK on multi-core Linux platforms.

Key Responsibilities

• Design, implement, and maintain high-throughput simulator engines accurately emulating O-RU behaviour and 5G NR UE protocol stacks (PHY and MAC layers)
• Develop and validate O-RAN Fronthaul interface specifications (WG4) across C-Plane, U-Plane, S-Plane, and M-Plane
• Write low-latency, highly parallel data path pipelines using DPDK and SIMD vector extensions (AVX-512/AVX2) on modern x86 architectures
• Architect robust multi-threaded and multi-process simulation pipelines using advanced IPC mechanisms, lock-free ring buffers, and shared memory
• Deploy, optimise, and profile simulator components within containerised and virtualised environments (KVM, Docker, Kubernetes)
• Implement test drivers and integrate application-layer verification protocols to validate complete simulation workflows against standard gNodeB and core network implementations
  
  

Must-Have Requirements

• Hands-on experience with O-RAN Fronthaul (WG4 interfaces — C/U/S/M-plane); keywords: O-RAN, ORAN, fronthaul
• Direct implementation or simulation experience with 5G NR PHY and/or MAC layer
• 5+ years of production-grade C or C++ systems programming in low-latency or HPC environments
• Hands-on DPDK experience — kernel-bypass packet processing, ring buffers, memory pool management
• Background at a wireless simulator or real wireless product company (not purely consulting)
• Willingness to attend an in-office POC round in Whitefield, Bangalore (mandatory, cannot be done remotely)
  
  

Good-to-Have Skills

• Rust — production-level experience in HPC or telecom/embedded contexts
• SIMD vectorization — AVX-512 / AVX2 for signal processing pipelines
• Virtualization — KVM, Docker, Kubernetes, SR-IOV
• Go (Golang) for tooling or control-plane orchestration
• Multi-threaded Linux systems programming — CPU pinning, IPC, lock-free concurrency
• Application-layer protocols — NETCONF/YANG, SCTP, TR-069
• Background from: Parallel Wireless, Mavenir, Ericsson R&D India, Nokia, VIAVI, CommScope, Qualcomm NSG, Intel Network Platforms
  
  

How to apply for this opportunity

• Step 1: Click On Apply! And Register or Login on our portal.
• Step 2: Complete the Screening Form & Upload updated Resume
• Step 3: Increase your chances to get shortlisted & meet the client for the Interview!
  
  

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