PreSales Solution Architect-RAN

Responsibilities:

 Act as the lead RAN / Open RAN solution architect across the full pre-sales lifecycle

– from opportunity qualification and technical discovery through proof-of-concept,

proposal, and contract award – partnering closely with Sales leadership to shape,

qualify, and grow the regional pipeline.

 Own and orchestrate end-to-end responses to RFx (RFI / RFP / RFQ), including

solution design, compliance and traceability matrices, win themes, technical

narratives, effort and Bill-of-Materials estimation, assumptions, and risk identification

– driving on-time, high-quality, fully compliant submissions.

 Design and articulate end-to-end 4G LTE and 5G (NSA / SA) Radio Access Network

architectures across macro, small-cell, and indoor layers – O-RU, O-DU and O-CU

with 7.2x split Open Fronthaul, midhaul / backhaul transport, and synchronization –

mapping the Rakuten Symphony portfolio to operator pain points and measurable

business outcomes.

 Lead RF design and radio network planning – link budgets, coverage and capacity

dimensioning, propagation modelling, frequency / PCI / PRACH planning, neighbour

and interference management, and antenna, massive-MIMO and beamforming

strategy across low-band, mid-band (C-band) and mmWave spectrum.

 Champion RAN automation and zero-touch operations – automated site bring-up and

one-click deployment, SON, closed-loop optimization, and the journey toward higher-

autonomy networks – and translate these capabilities into concrete, quantifiable

value propositions for customers.

 Architect private wireless / enterprise networks – private 4G/5G and neutral-host

solutions for manufacturing, mining, ports, logistics, utilities, and campus

environments – addressing CBRS and licensed / shared spectrum, network slicing,

on-prem and edge compute, and deterministic performance (low latency, high

reliability, URLLC).

 Design cloud-native, virtualized and containerized RAN (vRAN / Cloud RAN) on

COTS hardware – CNFs on Kubernetes, CaaS / O-Cloud, inline and lookaside

hardware acceleration, and real-time / timing profiles – positioned across centralized,

distributed and far-edge sites.

 Lead technical proofs-of-concept, lab trials, product demonstrations, and solution

integration and validation, tailoring demo environments to each customer’s specific

use cases, KPIs, and success criteria.

 Be responsible and accountable for authoring technical solution documents, high-

level designs, design proposals, sizing and Bill-of-Materials, and TCO / ROI models

that withstand customer and third-party technical scrutiny.

 Serve as the trusted technical advisor to customers and prospects – running

discovery workshops, executive briefings, and technical deep-dives – and manage

technical stakeholder relationships from engineering and operations teams up to C-

level.

 Work cross-functionally with internal teams – Product Management, Engineering,

Delivery / Professional Services, Commercial, and Bid Management – and with

external parties – operators, system integrators, hyperscalers, and O-RAN /

ecosystem partners – to assemble winning and deliverable solutions.

 Generate thought-leadership content – white papers, blogs, reference architectures,

and webinars – and represent Rakuten Symphony at industry events and standards /

community forums such as TM Forum and the O-RAN ALLIANCE.

 Stay ahead of RAN market trends – Open RAN and the O-RAN ALLIANCE

ecosystem, 5G-Advanced and the road to 6G, vRAN / Cloud RAN, RIC and rApp /

xApp marketplaces, AI-native and energy-efficient RAN, and private / enterprise

networks – and bring that insight into customer conversations and internal strategy.