Best Telecom Infrastructure Tech Companies in San Jose, United States
The 35 best Telecom Infrastructure Tech companies in San Jose, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: 2Wire.
Ranked: Best Telecom Infrastructure Tech companies in San Jose
| # | Company | Disclosed funding | Last round | Stage | Employees | Founded | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2Wire Network equipment provider | $200M | 286 mo ago | Acquired | 1,600 | 1998 | Brian Hinman Co-Founder & ex - CEO | 162 patents Broadband DSL line interface circuits and network access/control equipment | — |
| 2 | Alkira Provider of cloud networking solution and network wide unification | $192M | 29 mo ago | Acquired | 75 75 → 187 (+149%) | 2018 | Amir K President & CEO / Founder | 38 patents Enables multi-tenant VPN virtualization, dynamic routing, and microsegmentation in cloud networks | — |
| 3 | Pluribus Networks Cloud & software-defined networks OS for data centers | $145M | 60 mo ago | Acquired | 133 | 2010 | C Yang Co-Founder | 43 patents Distributed network operating system and fabric for scalable, virtualized switching infrastructure | — |
| 4 | Vivace Networks Multiservice IP switches provider | $118M | 311 mo ago | Acquired | — | 1999 | — | — | — |
| 5 | Viptela Providing Secure Extensible Networks | $108M | 124 mo ago | Acquired | 124 | 2012 | — | 25 patents Secure SD-WAN overlay routing with dynamic path selection, NAT traversal, and key management | — |
| 6 | Graphiant Provider of software-based connectivity solutions for data management and network infrastructure 37Moat top 37%Talent top 38%Funding top 41%Patents top 45% All 9 signals ▾Moattop 37% Talenttop 38% Fundingtop 41% Patentstop 45% Innovationtop 47% Techbottom 46% Globalbottom 39% Marketbottom 36% Newsbottom 18% Moat: Editorial + unicorn rating 7/10 · IP moat: 8 patents Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 37/100 | $96M | 17 mo ago | Series B | 99 | 2020 | Stefan Olofsson Founder & CTO | 8 patents Patents concentrated in electrical & electronics | — |
| 7 | Tasman Networks Routers and internet access solutions | $93M | 269 mo ago | Acquired | — | 1997 | Paul Smith ex - CEO & President | — | — |
| 8 | LGC Wireless Global leader in network infrastructure solutions for communication networks | $83M | 253 mo ago | Acquired | 80 | 1996 | John B Georges President and Co-founder | 119 patents Designs distributed antenna systems for metropolitan wireless signal distribution and TDD management. | — |
| 9 | SkyCross Manufacturer and designer of antenna solutions | $70M | 146 mo ago | Acquired | 201 | 2000 | — | 205 patents Patents concentrated in electrical & electronics | — |
| 10 | Pacific Broadband Cable modem termination systems provider | $50M | 306 mo ago | Acquired | — | 1999 | Rami Rahim CEO | — | — |
| 11 | Talari Cloud solutions for communications, networks, applications, and digital business experiences | $45M | 111 mo ago | Acqui-Hired | 69 | 2004 | — | — | — |
| 12 | ArrayComm MIMO antenna signal processing | $45M | 228 mo ago | Series D | 95 | 1992 | — | 149 patents Advanced massive‑MIMO beamforming, spatial signature calibration, and power‑controlled channel sharing | — |
| 13 | Edgewater Networks IP based network devices and orchestration solutions provider | $31M | 137 mo ago | Acquired | 79 | 2002 | — | 34 patents Redundant IP network health monitoring, traffic identification, and VoIP codec management | — |
| 14 | Bay Microsystems Internetwoking Products for Optical and packet switching | $26M | 230 mo ago | Acqui-Hired | 39 | 1998 | Chuck Gershman Co-Founder | 37 patents Enterprise WAN data transport, mesh networking, optical clocking, and traffic policing solutions | — |
| 15 | Xpliant Provider of Ethernet Silicon Switches for SDN (software-defined networking) | $19M | 153 mo ago | Acquired | — | 2011 | — | 114 patents Patents concentrated in computing, sensing & instrumentation | — |
| 16 | Swan Labs Network optimization and app acceleration | $15M | 265 mo ago | Acquired | — | 2004 | Dan Kolkowitz Co-Founder | — | — |
| 17 | Lumina Networks Open-source SDN controller and other networking products | $14M | 85 mo ago | Deadpooled | 75 | 2017 | — | — | — |
| 18 | Propel Internet acceleration and network optimization solutions provider | $12M | 265 mo ago | Acqui-Hired | 101 | 1999 | — | 28 patents Wearable bioelectronic textiles with conductive hybrid yarns and moisture‑managed electrodes | — |
| 19 | Qulsar Precision timing and synchronization solutions for diverse industries and applications | $5M | 107 mo ago | Series A | 12 | 2010 | — | 13 patents Precise network and radio-based time synchronization using distributed hybrid clocks | — |
| 20 | Broadway Networks Optical subsystems provider | $5M | 196 mo ago | Acquired | 10 | 2006 | Wen Li Co-Founder & CTO | — | — |
| 21 | Ionos Networks Provider of enterprise network management solutions | $1M | 130 mo ago | Seed | 5 | 2014 | Vishwas Manral Founder & CTO | — | — |
Top 12 Telecom Infrastructure Tech companies in San Jose
#1
Series B · San Jose, California · founded 2020 · 99 employees$96Mraised▾
Provider of software-based connectivity solutions for data management and network infrastructure. The company delivers network solutions for cloud, SaaS, B2B, branch networking, and AI. It offers tools for data assurance, security, and compliance management. The company’s solutions aim to simplify network infrastructure, ensuring speed and agility for data capitalization.
- May 2025Series B$19M
- Mar 2023Series B$62M
- Dec 2020Series A$33.5M
#2
Acquired · San Jose, California · founded 2018 · 75 employees$192Mraised▾
Provider of cloud networking solution and network wide unification. The platform allows users to connect various networks, sites, and clouds, while also providing network solutions and resiliency. The businesses can streamline the multi cloud network provisioning process and gain visibility across the network infrastructure.
- May 2024Series C$100M
- Aug 2022Series B—
- Oct 2020Series B$54M
- Apr 2020Series A$30M
#3
Acquired · San Jose, California · founded 2010 · 133 employees$145Mraised▾
Pluribus Networks provides performance-oriented network virtualization for private and public cloud data centers. Its two main products are Netvisor OS and Freedom Server-Switches. Netvisor functions as a distributed network operating system with hypervisor bare-metal virtualization capabilities of computing resources - CPU, memory, and storage & merchant silicon switch chip. The Freedom Server-Switch includes a Solaris-based server for hosting and executing network service applications, combined with a 10/40G Ethernet merchant silicon switch and network processor.
- Oct 2021Series D$20M
- Jan 2015Series D$52M
- Mar 2013Series C—
- Dec 2012Series C$23M
#4
Acquired · San Jose, California · founded 1998 · 1600 employees$200Mraised▾
Provides broadband service delivery platforms. The company offers global telecom carriers with broadband products, software, and service platforms that enable an integrated multi-play of networked data, voice, and media services. Its products and services include residential gateways, multi-service media platforms, intelligent home servers, remote management systems, and call center customer support, as well as intelligent gateways, including modem, router, wireless access point, and firewall.
#5
Acquired · San Jose, California · founded 1997$93Mraised▾
Tasman Networks (known as Tiara Networks till 2002) is a provider of enterprise-grade mid-range and branch-office routing systems for enterprises. It enables enterprises to use multi-megabit Internet access through its WAN internet protocol routers, converged service routers and Internet access solutions.
- May 2004Series G$14.4M
- Jul 2002Series F$15M
- May 2001Series E$22.5M
- Oct 1999Series D$21M
#6
Acquired · San Jose, California · founded 2012 · 124 employees$108.5Mraised▾
Viptela's provides a Secure Extensible Network (SEN) which is made up of products. vEdge routers: They sit at the perimeter of a site (such as remote offices, branches, campuses, data centers) and provide secure data connectivity over any transport. vSmart SDN Controller: This is the brain of the Viptela solution and centrally manages routing, policy, security, segmentation, and authentication of new devices that join the overlay network. Manage the Network Management System (NMS): This enables centralized configuration and management of the Viptela SEN solution and provides a real-time dashboard on the health of the network. Viptela has focused much on its launch of the security implications of today’s WAN architectures.
- May 2016Series C$75M
- Mar 2014Series B$33.5M
#7
Acqui-Hired · San Jose, California · founded 2004 · 69 employees$45.3Mraised▾
Cloud solutions for communications, networks, applications, and digital business experiences. It offers a comprehensive suite of cloud-native applications and secure network infrastructure solutions. The company focuses on enabling businesses to evolve their networks, grow revenue, and create new digital experiences. Its offerings include 5G core network solutions, network analytics, converged charging systems, and automation tools. It provides consulting services to help deploy solutions quickly and efficiently. The company supports cloud-scale monetization, service orchestration, and unified operations. It also offers enterprise performance management, human capital management, and enterprise communications platforms. The company's solutions cater to industries seeking to leverage network insights and manage cloud-based services, with a focus on digital business experience, ERP, supply chain management, and retail operations. The company's offerings are cloud-based and support subscription models.
- Jul 2017Series E$1000K
- Nov 2013Conventional Debt$7.5M
- Nov 2013Series D$15M
- Oct 2012Series B$9.5M
#8
Acquired · San Jose, California · founded 1999$118Mraised▾
Multiservice IP switches provider
#9
Acquired · San Jose, California · founded 1996 · 80 employees$83Mraised▾
Global leader in network infrastructure solutions for communication networks. The company provides essential infrastructure for communication, offering a wide array of products and services across various network types, including broadband and access network systems, cable assemblies, and cable management solutions. They cater to central offices, data centers, enterprise networks, and more, with a focus on innovation and reliability. Their offerings include fiber optic cables, connectors, panels, and related tools and accessories. The company supports the evolution of HFC networks, FTTX deployments, and enterprise structured cabling. They also provide solutions for video processing, security, and delivery systems. The company's portfolio includes software and integration services, managed networks, and outside plant services. They are committed to sustainability and ethical practices, offering resources like case studies, webinars, and self-service tools. The company serves as a partner for IT infrastructure solutions, network transformation, and critical access network evolution.
- Sep 2005Series B$13M
- Jan 2002Series B$19.3M
#10
Acquired · San Jose, California · founded 2002 · 79 employees$31.4Mraised▾
IP based network devices and orchestration solutions provider. It is a monitoring solution that consists of modules for VoIP analytics, real time reports of converged infrastructure, API for Network Operation Control. Intelligent edge solutions include unified communications, EdgeMarc Enterprise Session Border Controllers, and EdgeMarc Multi Service gateways. These solutions are used to connect cloud based services such as hosted Private branch exchange.
- May 2015Series C$4.8M
- Apr 2014Conventional Debt$5M
- May 2010Series C$5M
- Jun 2009Series C$2M
#11
Acquired · San Jose, California · founded 2000 · 201 employees$69.6Mraised▾
Skycross is a USA based company which designs and manufactures antenna and radio-frequency (RF) solutions. Its products include VersiTune-LTE Antenna, a tuning antenna product that supports LTE and carrier aggregation to be commercially brought to market. Other products include internal and external Wi-Fi antenna solutions and wireless antenna modules for machine-to-machine applications.
#12
Series D · San Jose, California · founded 1992 · 95 employees$45Mraised▾
ArrayComm develops software for wireless infrastructure and client device applications in LTE and WiMAX to improve baseband performance. Also provides a Multi-antenna signal processing suite, A-MAS, for base station and mobile CPE applications in 4G. Its solution combines MIMO, beamforming, and interference cancellation aspects to improve user experiences and network economics through enhanced coverage, data rates, and system capacities.
- Sep 2007Series D$30M
- Sep 2000Venture Debt$34M
- Apr 2000Series C$15M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Telecom Infrastructure Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on 5G / 6G Networks is moving in the United States
A read on the academic research around 5G / 6G Networks — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 7,631 United States-affiliated papers.
- The University of Texas at Austin253
- Princeton University249
- Georgia Institute of Technology223
- Concordia University182
- Northeastern University163
- Beamforming519→1075
- Telecommunications14→150
- Electronic engineering150→265
- MIMO324→419
- Wireless42→125
- Telecommunications37→139
- Beamforming897→971
- Electronic engineering191→249
- Wireless63→114
- Antenna (radio)96→132
- Telecommunications6→11
- Physical layer1→5
- Phased array7→10
- Transmission (telecommunications)5→6
- Channel (broadcasting)6→7
Where 5g 6g is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing 5g 6g patents in the United States
United States 5g 6g patent filing is accelerating — 499,540 filings from 8,000 assignees (2016–2025), led by Qualcomm, Intel, Apple; annual filings 46197→46569.
- Qualcomm180521
- Intel33840
- Apple32311
- Microsoft18458
- IBM15530
- Google15131
- Interdigital Patent Holdings14759
- Interdigital TECH14106
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.