Mantis Ltd
Executive Assistant
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Executive Assistant to the Managing Director
At Mantis we are looking for someone who prides themselves on accuracy, is highly organised, trustworthy, and proactive, ready to become the right hand to our Managing Director and play a key role in helping the business run smoothly at the top. This is a fast-paced role that requires juggling competing priorities and managing your time efficiently – we are looking for a high performer who works best under pressure and enjoys variety across their workload.
Established in 2018, Mantis Energy has grown into a multi-service Net Zero engineering, energy consultancy, and construction business — spanning low energy building design, energy & sustainability consulting, M&E contracting, building services engineering, project & contract management, on-site construction, energy procurement, and facilities management, delivered across the education, healthcare, commercial, residential, social housing, and renewable energy sectors.
As our Executive Assistant to the Managing Director, you will take ownership of the diary, inbox, travel, and purchasing that currently eat into the MD’s time, acting as a trusted filter and gatekeeper so that time is protected for the highest-impact work. You will become an integral part of a friendly and dynamic business based in the heart of Wilmslow town centre, working closely with the MD and senior leadership team.
This is a role built on trust, discretion, and initiative. You will make sound judgment calls on the MD’s behalf, know what genuinely needs their attention versus what can be delegated, and represent them professionally in written and verbal communication.
Our MD leads in a direct, plain-spoken, and outcomes-focused way, so this role suits someone with genuine resilience who takes feedback professionally, holds their ground, and is confident chasing people for answers.
WHAT WE OFFER:
- Total Compensation Package up to £44,000
- Base Salary £30,000 to £40,000 (Depending on Experience)
- 36 days Holiday (Including Public Holidays)
- 10% Overall Pension Contribution
- Comprehensive Training and Personal Development Plan
- Primarily Office-Based, with flexibility for occasional remote working once established (this role works best with in-person availability to the MD)
- Monday to Friday (Flexi Start / Finish Time)
ADDITIONAL COMPANY BENEFITS:
- Health Cash Back Plan
- Holiday Buy and Sell Scheme
- Electrical Vehicle Salary Sacrifice Scheme
- Cycle to Work Scheme
- Sustainable Volunteering Day
- Regular Company Funded Social Events
- We are an equal opportunities employer
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THE ROLE (but not limited to):
Diary & Time Management
- Owning the MD’s diary end-to-end — proactively scheduling and protecting time for high-impact strategic work, flagging conflicts, and building in genuine focus time
- Rescheduling meetings where appropriate and proactively reminding the MD of important commitments so nothing is missed
- Building recurring strategic planning time into the diary as a fixed, protected commitment that consistently goes ahead
Inbox, Meetings & Reporting
- Triaging and organising the MD’s inbox daily, filtering out noise, drafting and sending short routine responses within agreed parameters, and managing follow-ups so nothing important is missed
- Acting as a courteous first point of contact for the MD by phone and email, and holding regular check-ins to agree what you can action directly and what needs his input
- Attending key meetings with the MD to take clear, accurate minutes, circulating these promptly with action points, and chasing owners who are behind through to completion
- Preparing meeting agendas and briefing notes in advance, and coordinating a consistent, recurring cadence of manager reporting meetings and KPI reviews so they never slip
- Scheduling and protecting the monthly cash flow and invoicing meeting with Finance, and keeping reporting templates, trackers, and KPIs organised and up to date
Instructing, Chasing, Travel & Purchasing
- Turning the MD’s direction into clear written instructions for staff, contractors, and suppliers, and chasing outstanding information, documents, and decisions until resolved
- Negotiating routine matters (pricing, scheduling, terms) on the MD’s behalf within agreed limits, with the confidence to push back and hold people to commitments
- Introducing contacts to each other, and granting or arranging access to systems, files, and accounts as instructed by the MD
- Booking and coordinating business travel, accommodation, and itineraries, resolving issues as they arise
- Managing purchases, expenses, and supplier orders on the MD’s behalf, researching options and making recommendations rather than simply booking the first available
Business Development, Recruitment & General Support
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- Coordinating logistics for networking events, conferences, and speaking engagements, and supporting bid management administratively — chasing inputs, formatting submissions, and tracking deadlines
- Helping prepare materials for presentations, public speaking, and business promotion activity
- Coordinating interview scheduling, candidate communication, and interview packs, freeing up the MD’s time to focus on final-stage interviews and hiring decisions
- Coordinating with senior leadership, clients, and external contacts on the MD’s behalf, and supporting the MD in preparing for board meetings, client meetings, and key presentations
- Managing confidential information with discretion, anticipating needs ahead of time, and providing light personal support — personal travel, appointments, and important dates — agreed and scoped with the MD
TO BE SUCCESSFUL, THE FOLLOWING EXPERIENCE WILL BE REQUIRED:
- Proven experience as a PA, EA, or senior administrator supporting a director or senior leader
- A confident, assertive self-starter who takes ownership without needing to be chased, and a naturally consistent, reliable operator who builds routines and reporting cadences that don’t slip
- Genuine resilience and a thick skin — comfortable working with a direct, plain-spoken leader and able to take feedback and directness professionally, never personally
- Comfortable instructing, chasing, and negotiating with people at all levels, and confident holding your ground when needed
- Excellent written and verbal communication skills, with the judgement to represent the MD professionally
- Strong minute-taking skills and the discipline to track actions through to completion
- Strong organisational skills and the ability to manage multiple competing priorities calmly
- Discretion and trustworthiness when handling confidential or sensitive information
- Confident use of MS Office / Outlook calendar management, with the ability to pick up new systems quickly, and a proactive, solutions-focused approach
- Full UK driving licence
Desirable:
- Experience supporting a Managing Director, CEO, or business owner directly — this is essential; this role is not suited to someone without this experience
- Experience in construction, engineering, or a professional services environment
- Formal PA/EA qualification or training
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