Founding Head of Telco

About this role

Job title: Founding Head of Telco

Location: London; 4 days in-office, 1 day wfh

Reports to: Chief Commercial Officer

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COSINE AT A GLANCE

Cosine is the UK's frontier AI lab for autonomous software engineering — not another coding assistant, but our own models, agent stack, eval harnesses, and product layer. We build our agent tooling entirely in-house and post-train open-source models to deliver reliable, enterprise-grade coding performance in security-critical settings.

Our offerings can be used as SaaS, deployed on VPC, on-prem or fully air-gapped. Through this flexability, we are able to service large-scale, highly regulated enterprises and industries including defence, financial service and healthcare.

We’re backed by YC and were recently selected for the UK’s sovereign AI programme. The company is at a rare stage: deep technical work, real enterprise pull, and a chance to shape how AI is deployed inside defence, banking, government, and other high-trust environments.

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MISSION

Own Cosine’s telco engagement and GTM motion from founder-led relationship building into a repeatable commercial engine.

The role exists to build on Cosine’s existing sovereign AI momentum with telecoms, critical national infrastructure operators, and strategic technology partners, turning senior interest into deep institutional relationships, clearly understood priorities, and qualified commercial opportunities.

This is a critical sector-building role: part enterprise sales, part partnerships, part market development, part infrastructure strategy, and part GTM leadership.

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CORE RESPONSIBILITIES

1. LEAD ENGAGEMENT WITH TELCO OPERATORS

- Own Cosine’s day-to-day engagement with priority telco organisations, including national telecoms operators, managed service providers, network infrastructure providers, and telecoms technology teams.

- Build on Cosine’s existing traction and reputation across sovereign AI, secure deployment, regulated infrastructure, and AI engineering to create senior routes into the right organisations.

- Maintain a clear account map across key telco organisations, including executive sponsors, technology leaders, network engineering teams, enterprise product owners, security stakeholders, procurement teams, and commercial decision-makers.

- Move relationships from broad sovereign AI or infrastructure interest into specific, practical areas where Cosine can create value.

2. BUILD MULTI-THREADED SENIOR RELATIONSHIPS

- Develop relationships across multiple divisions, business units, and seniority levels in each target account.

- Engage CIO, CTO, CISO, Chief Digital Officer, network, platform, engineering, enterprise product, security, procurement, strategy, and commercial stakeholders.

- Identify how priorities differ across teams, for example AI compute monetisation, software engineering productivity, customer-facing AI services, secure deployment, network automation, operational resilience, and legacy system modernisation.

- Build enough trust that Cosine becomes part of the strategic conversation around telco AI, not just another vendor selling a developer tool.

3. BUILD COSINE’S UNDERSTANDING OF TELCO SOVEREIGN AI PRIORITIES

- Run structured discovery across telco organisations to understand what they truly care about in sovereign AI, AI coding, and enterprise automation.

- Capture use cases, constraints, buying triggers, objections, deployment requirements, security expectations, procurement routes, partner dependencies, and success metrics.

- Translate telco customer signal into internal intelligence for sales, partnerships, product, research, engineering, marketing, and leadership.

- Build a sector view of where Cosine has the strongest right to win, including priority use cases, highest-intent accounts, likely buyer personas, partner routes, and repeatable commercial narratives.

Priority areas to explore include:

- Sovereign AI coding and software engineering inside telco-controlled infrastructure.

- Helping telcos compete with hyperscalers by offering AI coding capabilities that run on their own infrastructure.

- AI adoption where source code, credentials, operational data, or infrastructure cannot leave the customer’s control boundary.

- Monetisation of GPU, cloud, and sovereign infrastructure investments through AI developer tooling.

- Legacy OSS, BSS, network, billing, provisioning, and internal platform modernisation.

- Software assurance, auditability, testing, review, and governance across high-scale engineering teams.

- Network automation, operational resilience, cybersecurity, and critical infrastructure workflows.

- Deployment models across telco cloud, customer VPC, on-prem, sovereign cloud, and air-gapped environments where required.

4. BUILD TOWARDS COMMERCIAL OPPORTUNITIES

- Convert relationship-building, technical education, and market development into qualified pipeline opportunities.

- Identify where there is a real business problem, budget owner, technical champion, procurement path, partner route, and reason to act now.

- Shape opportunities into concrete next steps: discovery sessions, technical deep-dives, workshops, pilots, proof-of-concepts, deployment planning, commercial proposals, or partner-led opportunities.

- Work with the wider GTM team to move qualified telco opportunities through the sales cycle.

- Keep a clear view of account status, stakeholder map, open actions, risks, next steps, deployment route, partner involvement, and commercial likelihood.

The role should focus deeply on commercial pull: serious conversations, mapped accounts, live opportunities, pilots, partner routes, and ultimately revenue.

5. WORK CLOSELY WITH PARTNERSHIPS ON TELCO…