• Organise joint events and relationship-building forums

  • Design and run high-quality FS-focused events (e.g. roundtables) that deepen relationships and create market signal.
  • Organise closed-door roundtables, private dinners, technical briefings, executive sessions, partner workshops, and coalition follow-ups.
  • Use events to move beyond generic AI discussion and into specific FS themes: sovereign deployment, governed software engineering, AI assurance, legacy systems, risk, resilience, and operational control.

• Help build the GTM team in financial services

  • Help define what the FS GTM motion should become as Cosine scales.
  • Build the early playbook for account selection, stakeholder mapping, discovery, qualification, event-led selling, partner-led entry, pilot design, and commercial progression.
  • Help recruit, onboard, and develop future GTM hires focused on financial services.
  • Establish the operating cadence for the sector: account reviews, pipeline tracking, event follow-up, customer insight capture, and internal reporting.
  • Work closely with SDRs, partnerships, marketing, founders, and enterprise sales to make FS a repeatable vertical

What good looks like in the first 6 months

• Multi-threaded relationships established across the most important accounts.
• The three top priority accounts are established, including existing coalition partners and new high-priority targets, and business cases set out.
• A structured view of FS sovereign AI use cases, buyer priorities, objections, and buying triggers.
• Qualified opportunities progressing into discovery, technical deep-dives, pilots, or commercial proposals.
• A clear FS GTM playbook that future hires can build from.

Success metrics

Relationship and market development

• Number of priority FS accounts actively engaged. That said, depth is more important than raw number here.
• Number of senior stakeholder relationships built across target accounts.
• Number of multi-threaded accounts with executive, technical, and commercial coverage.
• Quality of customer insight captured on sovereign AI priorities, deployment requirements, and use cases.

Commercial progression

• Qualified FS opportunities created.
• Workshops, technical deep-dives, pilots, or proposals initiated.
• Pipeline generated or influenced.
• Conversion of coalition engagement into live commercial next steps.
• Evidence that Cosine is becoming a serious strategic partner in target accounts.

Team and operating system

• FS account map and stakeholder tracker built and maintained.
• Repeatable cadence established for account reviews, event follow-up, and sector reporting.
• Future FS GTM hiring profile defined.

Cosine’s responsibilities

Cosine Will Support The Role With

• Founder access for senior meetings and strategic accounts.
• Existing coalition relationships and warm routes into relevant FS organisations.
• Support from partnerships, marketing, product, engineering, ML, and legal where needed.
• Enterprise-grade materials on sovereign AI, deployment models, security, product architecture, and ROI.
• Budget for high-signal dinners, roundtables, workshops, and customer events.
• Clear internal ownership for technical escalation, pilot scoping, legal/procurement, and product feedback.
• A single accountable line manager for commercial direction and prioritisation.

Candidate profile

This Role Is Likely To Suit Someone Who

• Has sold, partnered, or built relationships inside financial services, ideally with banks, insurers, payments firms, exchanges, or regulated infrastructure providers.
• Can credibly engage senior stakeholders while still doing the account-by-account follow-up work themselves.
• Understands complex enterprise buying cycles and knows how to move from relationship to qualified opportunity.
• Is comfortable with ambiguity, sector-building, and founder-led GTM rather than inheriting a mature sales machine.
• Can organise high-signal executive events and turn them into commercial momentum.
• Thinks commercially, writes clearly, and can build account plans, briefing notes, proposals, and internal decision materials without heavy supervision.
• Has the judgement to know when a conversation is just interesting and when it is becoming real pipeline.

Summary

The Founding Head of Financial Services should make Cosine impossible to ignore for the right FS organisations.

They should understand what these institutions actually need from sovereign AI, build the relationships required to be taken seriously, create the forums where those conversations happen, and turn that trust into qualified commercial opportunities. Over time, they should also build the team, playbook, and operating cadence that make financial services a repeatable Cosine vertical rather than a founder-led experiment.

Why join Cosine

• Opportunity to sell a genuinely differentiated product into mission-critical defence and national security environments
• Meaningful early equity with real upside
• Direct impact on product direction and go-to-market strategy
• Small, elite team with high standards and strong technical depth

What you can expect:

• Competitive salary, benchmarked to the market
• Equity / share options, so you share in the upside you help create
• 30 days’ holiday + bank holidays
• Work hard in the office, collaborate closely, and switch off properly
• Dog-friendly office - bring your dog to work
• Weekly team breakfast & lunch
• Monthly socials
• Pension
• High-quality equipment to do your best work

How We Work

We are an in-office, high-ownership team. You will work closely with leadership, product, and engineering and play a key role in shaping Cosine’s defence and government GTM strategy. Our current tooling includes Attio, Lemlist, PostHog, Notion, Slack, and Google Workspace, with flexibility to evolve as we scale.

Equal Opportunity

We’re an equal opportunity employer. We value diverse backgrounds and encourage applications from everyone who meets the role requirements, even if you don’t tick every box.