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fin-house

Financial Controller

Posted 4 Hours Ago
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In-Office
London, Greater London, England, GBR
Senior level
In-Office
London, Greater London, England, GBR
Senior level
Lead finance across a portfolio of 5-7 clients: own P&L, cashflow and balance sheet, run budgeting/forecasting and scenario planning, build financial models for fundraising/M&A, manage AP/AR/payroll/VAT operations, coach 2-3 direct reports, drive systems/process improvements and act as a trusted finance advisor to founders.
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About fin-house

We build human-first finance teams for ambitious, fast-growth businesses. Embedded fractional teams that feel like our clients' own, from day-to-day operations to board-level strategy.

We believe finance should be a growth engine, not a back-office function. And we want our people to outgrow us. You'll grow faster here than almost anywhere else - across more industries, business models and finance levels than any single in-house role can offer

The key bits

Location: We are based in Waterloo (London) with a minimum of three days in the office a week.

Salary: £70,000 to £80,000 depending on experience

The role

Our fin-leads head up finance across a portfolio of 5-7 clients.

Forecasting, planning, and commercial insight. Challenging thinking, assessing risk, shaping decisions. Connecting day-to-day performance with long-term strategy, and building high-performing teams underneath you to scale the impact.

You're not the CFO; that's a different seat. You're the trusted finance voice in the room, turning finance into something founders actually use.

The fast track

Joining as a fin-lead puts you on the fastest finance leadership track we know.

You'll lead finance across multiple ambitious businesses at once. The variety and depth you'll get in 18 months here would take a decade in a single in-house role. You'll work directly with founders on the conversations that actually matter - fundraising, scaling, making the hard calls - across industries, business models and growth stages most finance leaders only ever see one of.

Next stop: FD. After that, CFO. We'll give you the experience, the coaching and the network to get there.

What you'll lead

•       Own the financial narrative across your clients - P&L, cashflow, balance sheet - translating complexity into clear guidance that founders can act on

•       Own the operational backbone - AP, AR, payroll and VAT - across your portfolio, keeping clients confident nothing slips

•       Lead budgeting, forecasting and scenario planning, connecting commercial reality with long-term strategy

•       Build sophisticated financial models for fundraising, M&A, and investment decisions

•       Challenge assumptions, flag risks early and shape decisions, not just report on them

•       Coach and develop fin-managers and fin-operators across your portfolio (typically 2-3 direct reports), building high-performing teams

•       Drive systems and process improvements, setting the standard for how Xero is configured and used

•       Help fin-house grow - through referrals, the relationships you build, and how you represent the brand externally


RequirementsWhat you'll bring

•       You want to lead innovative, impact-driven finance teams across exciting startups and SMEs

•       You're a team player and want to be part of a tight-knit, ambitious culture

•       You live for driving business change and challenging the status quo

•       Intellectual curiosity and a passion for continuous learning

•       Excellent communicator, strong people skills, high self-awareness

•       Impeccable time management and organisation

What you'll need

•       Minimum 7 years' experience in an accountancy or finance role

•       An accountancy qualification (ACA / ACCA / CIMA) is desirable; we'll consider strong alternative paths

•       Proficient in Excel and/or Google Sheets

•       Experience with Xero and/or QuickBooks is highly desirable

•       Experience working with a portfolio of clients is highly desirable


Benefits

💰 Competitive salary of £70,000-£80,000 based on experience

💸 Company-wide performance-related bonus scheme

🌳 Tailored personal development plan, to help you grow

✈️ 23 days annual leave, plus bank holidays

🎂 Birthday day off - celebrate another year older and wiser however you like!

🎄 Office closed between Christmas and New Year

💝 Monthly Juno wellbeing credits to spend your way

🥂 Monthly socials with the team

HQ

fin-house London, England Office

London, United Kingdom

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