Rubik Builders Limited is a Telford-based construction and retrofit contractor specialising in multi-measure decarbonisation, renewables, and retrofit works. Holding PAS 2035 and MCS accreditations, we deliver projects across the Midlands for housing associations, local authorities, and Tier 1 contractors on established frameworks including Fusion21 and Aster Wave 3.
We are a growing SME with a close-knit team and a strong reputation in our sector. This is a business where your contribution is visible, valued, and directly supports the MD and the wider operation.
The Role
We are looking for a highly organised and proactive Office Manager to join our Wellington office. Reporting directly to the Managing Director, you will be the operational backbone of the business — owning the day-to-day financial administration, managing office operations, and acting as the first point of contact for the MD and wider team.
This is a genuinely varied role that carries real responsibility. You will need to be dependable, discreet, and confident managing multiple priorities simultaneously in a fast-paced SME environment.
Key Responsibilities
* Process monthly payroll accurately and on time
* Manage day-to-day bookkeeping in QuickBooks — purchase ledger, sales ledger, and bank reconciliation
* Process supplier invoices, raise sales invoices, and manage payment runs
* Liaise with the company accountant on VAT returns, month-end, and financial reporting
* Monitor petty cash and manage company expense claims
Office & Administrative Management
* Act as gatekeeper for the Managing Director — managing correspondence, calls, and diary
* Maintain and organise company records, contracts, and compliance documentation
* Manage office supplies, facilities, and day-to-day operational requirements
* Support new starter onboarding including contracts, HR records, and NEST pension enrolment
* Coordinate with site teams and subcontractors on administrative matters
* Assist with document control and filing in line with company procedures
What We Are Looking For
* Proven experience in an office management, senior administrator, or equivalent role
* Competent user of QuickBooks or equivalent bookkeeping software
* Experience processing or supporting payroll
* Strong Microsoft Office skills — particularly Word, Excel, and Outlook
* Excellent organisational skills with the ability to manage competing priorities
* Discreet and professional when handling confidential information
* Strong written and verbal communication skills
* Experience in a construction, property, or trades business
* Familiarity with Signable or similar digital contract platforms
What We Offer
* Salary of £25,000 – £28,000 per annum depending on experience
* Full time, Monday to Friday
* Central Wellington office location — easily accessible from Telford and surrounding areas
* A varied and autonomous role with direct exposure to MD-level decision making
* A supportive, close-knit team within a growing, accredited, and award-recognised business
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