Communications Manager

d-Matrix; United States; Hybrid; USD 80,000 - 110,000; Full time

Benefits offered by this job

Hybrid work environment

Job summary

d-Matrix, a leading AI infrastructure company in Santa Clara, seeks a Communications Manager to own internal communications and corporate social media. You’ll work directly with the VP to establish processes, create social playbooks, and support a growing communications function with CEO access.

You’ll build internal channels, partner with HR on hiring narratives, manage content calendars, draft posts, and analyze engagement across LinkedIn, X, YouTube, and other channels in a fast-paced,

Qualifications

• Proven ability to craft clear, engaging internal and external communications.
• Experience writing for newsletters, all-hands, and leadership updates.
• Strong editing skills across social posts, emails, and long-form content.
• Ability to manage multiple workstreams with deadlines and detail.
• Comfort in a fast-paced startup/tech environment with shifting priorities.
• Curiosity about AI, tech, and semiconductors; eagerness to learn.

Responsibilities

• Develop internal comms strategy and content including milestones and updates.
• Create and manage corporate social media content calendar and posts.
• Support recruitment comms, employer branding, and onboarding materials.
• Monitor engagement, report metrics, and stay ahead of platform trends.
• Provide operational support to the communications function and vendors.
• Coordinate with VP, CEO access, and agency partners on campaigns.

Skills

Strong writing

Social media management

Content marketing

Project management

B2B tech experience

Slack & SharePoint

Tools

Slack

SharePoint

Job description

At d-Matrix, we are focused on unleashing the potential of generative AI to power the transformation of technology. We are at the forefront of software and hardware innovation, pushing the boundaries of what is possible. Our culture is one of respect and collaboration.

We value humility and believe in direct communication. Our team is inclusive, and our differing perspectives allow for better solutions. We are seeking individuals passionate about tackling challenges and are driven by execution. Ready to come find your playground? Together, we can help shape the endless possibilities of AI.

About d-Matrix

d-Matrix is the semiconductor company pioneering low-latency AI inference for data centers. The company has a current valuation of $2 billion, having raised $450M from investors including Microsoft's M12, Temasek, Samsung, SK Hynix, the Qatar Investment Authority, and Singapore's EDBI. Corsair, the company's flagship inference accelerator, is in full production and shipping to hyperscalers, neoclouds, and frontier AI labs.

This is a rare opportunity to join a fast-growing AI infrastructure company at a pivotal moment in its growth.

About the Role

The Communications Manager is a versatile, hands‑on role split across two critical functions: internal/recruitment communications and corporate social media. You'll be the person who ensures d‑Matrix employees feel informed, aligned, and connected to the company's mission while also building the company's social media presence across LinkedIn, X, and other channels.

This is a building role. You'll be working directly with the VP to establish internal comms processes, creating social media playbooks, and supporting a newly formed communications function with direct access to the CEO. If you thrive on variety, move fast, and care about both the craft of communicating with purpose and the mechanics of getting things done, this is for you.

Key Responsibilities

Internal & Employee Communications (50%)

• Develop and execute internal communication strategy to keep employees aligned on company direction, milestones, and priorities
• Write and manage regular internal communications: office updates, all-hands updates, milestone announcements, and company newsletters
• Ensure employees hear company news from leadership before they read about it in the press
• Support employer branding and recruitment communications in partnership with HR — including careers page content, hiring narratives, and onboarding materials
• Support change management communications for organizational transitions, leadership hires, acquisitions, and policy updates

Corporate Social Media (50%)

• Own day‑to‑day management and content execution across d‑Matrix's corporate social media channels (LinkedIn, X, YouTube)
• Develop and maintain a social media content calendar aligned with corporate communications cadence, product milestones, events, and press coverage
• Draft social media posts for the corporate handles, including news amplification, thought leadership content, event coverage, and partner announcements
• Support the VP and PR Senior Manager with social media amplification of press coverage, executive posts, and campaign content
• Monitor social media engagement, track metrics, and report on performance
• Stay current on platform trends, AI industry conversations, and competitor social activity

Team & Operational Support

• Provide operational support for the communications function: opening and tracking POs, managing vendor invoices, maintaining team files and tools
• Maintain and organize shared resources including messaging documents and content libraries
• Support event logistics and coordination as needed, in partnership with the VP and agency partners
• Help maintain the corporate website content in coordination with marketing colleagues

What You Bring

• 3‑5 years of experience in communications, social media, or content marketing – ideally in technology, B2B, or a startup environment
• Strong writing and editing skills across multiple formats: social posts, internal emails, newsletters, and short‑form content
• Experience managing corporate social media channels and understanding of platform best practices (LinkedIn and X in particular)
• Organizational skills and attention to detail, i.e. you can manage multiple workstreams, track deadlines, and keep the team's operations running smoothly
• Comfort working in a fast‑paced environment where priorities shift and adaptability is valued
• A genuine interest in AI, technology, and the semiconductor industry – you don’t need to be a technical expert, but you should be curious and eager to learn
• Proficiency with tools like Slack, SharePoint, social media management platforms, and basic project management tools
• A team‑first mindset – you're happy to roll up your sleeves on operational tasks and understand that great communications teams run on both strategy and execution

What We Offer

• A foundational role in a growing communications function at one of the most closely watched AI infrastructure companies
• Direct exposure to executive leadership and company strategy, with your work highly visible across the organization
• Competitive salary, equity, and benefits
• A collaborative, growth‑minded team that values learning, curiosity, and editorial craft
• Hybrid work environment

Location

Santa Clara, California — hybrid (minimum 3 days in office per week).

Equal Opportunity Employment Policy

d-Matrix is proud to be an equal opportunity workplace and affirmative action employer. We’re committed to fostering an inclusive environment where everyone feels welcomed and empowered to do their best work. We hire the best talent for our teams, regardless of race, religion, color, age, disability, sex, gender identity, sexual orientation, ancestry, genetic information, marital status, national origin, political affiliation, or veteran status. Our focus is on hiring teammates with humble expertise, kindness, dedication and a willingness to embrace challenges and learn together every day.

d-Matrix does not accept resumes or candidate submissions from external agencies. We appreciate the interest and effort of recruitment firms, but we kindly request that individuals interested in opportunities with d-Matrix apply directly through our official channels. This approach allows us to streamline our hiring processes and maintain a consistent and fair evaluation of all applicants. Thank you for your understanding and cooperation.