Are you a versatile pace setter, strong strategist and serious operator who will thrive as the anchor point for a fast-moving, venture backed company? Do you feel ready to step up and be trusted to run the day-to-day, and act as a founders right hand? If owning the London operation of a category-defining AI therapy company, while partnering closely with a New York–based CEO, sounds like your kind of challenge, we should talk.At Mojo we believe the quality of our lives is built on the quality of our relationships.And in this regard, society is in crisis. 60% of couples are unhappy, 1 in 3 young people haven’t had sex in the last year, 61% experience weekly loneliness, and millennials and Gen Z face a 31x increase in psychological sexual issues since 2000. Modern life is drowning people in screens, bad advice, and unrealistic expectations.Mojo is the world’s first AI Sex & Relationship Therapist, making expert psychological support accessible exactly when and where people need it most. We combine 50+ years of sexology research with frontier AI technology to deliver scalable, affordable, and shame-free support.With 1M+ members across 150 countries, we've experienced incredible global growth backed by two of Europe's top VC firms. You might have even seen us on the front cover of the Sunday Times. With offices in New York and London, Mojo's vision is a world where quality intimate relationships are the foundation of mental health and human flourishing.Check us out here: https://mojo.soThe RoleThis is a London-based Chief of Staff role with significant ownership of our UK team and operations.Our founder is based in New York. You will be the most senior operator on the ground in London and act as the CEO’s trusted right hand, running the London office, keeping the company operating smoothly day-to-day, and ensuring nothing important drops between time zones.You’ll work closely with the CEO being his proxy across internal decision-making and being the connective tissue between UK and US teams.As an early-stage startup, this role comes with significant autonomy and trust. The scope will evolve as the company grows, and you should be excited by responsibility, ambiguity, and being “the person who makes things work.”Owning core business operations across people, legal, compliance, and governance as the company scales across the UK & USRunning our finance function with external accounting support, including budgeting, forecasting, cashflow management, and investor reportingPreparing the company for Series A fundraising, including financial models, data rooms, and internal readinessCoordinating and negotiating with external advisors and translating advice into clear internal plansWorking closely with the senior leadership team to improve ways of working, decision-making clarity, and cross-functional collaborationIdentifying and leading high-leverage strategic projects that don’t have a natural functional ownerActing as a calm, trusted problem-solver, bringing structure to ambiguity and momentum to complex problemsWe are building a team of people that have real ownership over the business. To be successful here, you should be willing to roll your sleeves up and get your hands dirty on anything that will help the business be more successful. RequirementsYou are:A highly capable operator with +4 years experience in fast-growing startups or consulting or Venture CapitalComfortable acting as a founder’s right hand, holding context, making judgement calls, and driving executionEqually strong at strategy and detail, happy building a model one moment and running a company All Hands meeting the nextOrganised, reliable, and trusted to handle sensitive information with discretionCommercially and financially literate, with experience owning or partnering closely on financeConfident working across functions and seniorities, and able to bring clarity without egoMotivated by ownership, responsibility, and building something meaningful from the insideWilling to roll your sleeves up and do whatever is needed to move the business forwardCompassion, empathy, understanding, or interest in mental healthAbility to keep up-to-date with the latest tools and trendsBenefits£110-120k, with chunky seed round equity packagePrivate health, optical, audiological, and dental insurance with Vitality HealthHybrid working, 3 days in and 2 days out, with great offices in Old StreetThree remote working fortnights a year (read more in our handbook)36 days off (inc local bank holidays)Parental leave for primary and secondary caregiversWorkplace nursery benefit and emergency child-sitting allowance Monthly team outings £500 personal wellbeing budgetUnlimited professional development allowanceA £100 budget for noise-cancelling headphones to help with deep workCycle to work scheme and Santander Cycles membershipIf you want to learn more about how we work check out our Employee HandbookWe want to build a diverse team with different backgrounds, outlooks and experiences. If you need any adjustments or support when you’re applying, no worries. Just let us know at work@mojo.so
Updated: 18 January 2026
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