Finance Manager

About Us

Fifth Dimension is bringing the magic of AI automation to document-heavy industries. Today we work with leading real estate businesses in the UK and US, automating complex workflows, extracting valuable insights from documents, and empowering professionals to focus on high-impact work. Our AI workspace transforms how large investment managers handle leases, development documents, and investment decisions. We're an international startup based in London, New York, and Singapore, backed by Tier 1 American and European investors. Our founders, Johnny Morris and Dr. Kate Jarvis, bring a powerful blend of expertise: Johnny has 18+ years applying data and analytics to real estate, while Kate holds a Stanford PhD and 12 years of executive experience across Silicon Valley and London startups. At Fifth Dimension, we are demanding yet encouraging, valuing experimentation and thoughtful challenge. Our company values – Own It, Ship It, and Don't Be Boring – drive us to deliver exceptional results whilst fostering a culture of innovation and continuous improvement.

A week in the life of our Finance Manager:

• Monday: You're reviewing last week's ARR movement. A new logo closed Friday – you update the weekly management report, recalculate pipeline coverage, and send the snapshot to the leadership team first thing.
• Tuesday: Deep in the revenue model. You work backwards from our 2026 target: how many AEs do we need, what quota should they carry, what ACV assumptions hold at different close rates? You flag two scenarios to the FD before EOD.
• Wednesday: In the office on Oxford Street. Back-to-back with the RevOps team to align on HubSpot pipeline definitions – you are building the underlying data structure that makes our FP&A meaningful, not just pretty.
• Thursday: Monthly close is coming. You review the management accounts pack from our outsourced accountants, reconcile actuals to budget, and feed updated actuals into the FP&A layer – flagging variances to the FD before the leadership review.
• Friday: Unit economics. You stress-test LTV:CAC ratios across our customer cohorts and draft a short brief for the FD ahead of next week's board prep.

This is finance at Fifth Dimension. You're not a passenger – you're building the function from the ground up.

What you'll do:

• As our Finance Manager, you will build 5D's FP&A function from scratch – the financial infrastructure that guides every major commercial decision between now and Series B.
• Own weekly management reporting: ARR, pipeline coverage, forecasts – built interactively and delivered to the leadership team.
• Build and maintain monthly management reporting: GRR, NRR, CAC, LTV:CAC, burn multiple, gross margin vs. assumption – with full P&L line items across sales & marketing, R&D, and G&A.
• Build our revenue model: working back from annual targets to AE headcount requirements, quota levels, ACV attainment, marketing channel investment, and stage-weighted pipeline.
• Maintain cap table, options register, and company secretarial tasks – working with outsourced providers but owning the internal layer.
• Act as the financial interface to RevOps – partnering closely on HubSpot data integrity, pipeline definitions, and revenue operations to ensure FP&A is built on solid ground.
• Support fundraising and board prep when needed – building the narrative and the numbers.

What we're looking for:

• Qualified accountant (ACA, ACCA, CIMA or equivalent).
• 3–6 years' post-qualification experience, ideally including time in a high-growth B2B SaaS environment.
• Strong FP&A foundations: revenue modeling, unit economics, scenario planning, management reporting.
• Genuine AI literacy – you use Claude or equivalent tools heavily in your workflow; building a model without them would feel like leaving performance on the table.
• Generalist mindset: equally comfortable running a cap table audit, building a quota model, and presenting to the CEO in the same week.
• Comfort with incomplete data and an instinct for pragmatic, high-quality outputs over perfect ones.
• A growth mindset – you want to be Head of Finance or Head of FP&A in a few years, and you will push yourself to get there.

Bonus points if you have:

• Experience in proptech, real estate, or adjacent financial services.
• Exposure to multi-entity structures (UK parent, US/Singapore subsidiaries).
• Hands‑on experience with HubSpot or similar CRM from a RevOps/FP&A angle.
• Previous experience supporting a fundraise or investor reporting.

What we offer:

• £80–110k salary per annum + bonus + meaningful equity (on a standard vesting schedule).
• Enhanced pension contributions (5%).
• Unlimited annual leave.
• £100 monthly wellbeing budget.
• £1,000 annual training budget.
• Electric car scheme (salary sacrifice).
• Tailored support for exceptional challenges, which may include contributions to gender-affirming care, private specialists and diagnostic scans, ADHD/Autism diagnosis, IVF/fertility care, and therapy.
• Enhanced parental leave: 14 weeks full pay for primary caregiver (followed by statutory pay); 6 weeks full pay for secondary caregiver.
• Flexible working – hybrid (Wednesdays in our Oxford Street office), judged on output not hours.
• Quarterly team weeks in London, regular travel to New York and Singapore as the business grows.

Department: Finance; Location: London; Remote status: Hybrid