Interim Financial Controller AI & Hardware Deep Tech Business Hybrid The Client Harmonic is partnering with a venture-backed deep tech business that pairs proprietary AI software with its own sensing hardware, already in use with UK government customers. Having recently closed a significant funding round and grown from under ten people to more than thirty in a year, the business is moving from R&D into production, with its first batch of units in build and large contracts in sight. Finance needs to be ready before those orders land. The Role This is a hands-on interim of around six months, working alongside the Chief of Staff and closely with the COO. You will take a finance function that has grown faster than its processes, get the ledger right, deliver the December year-end and leave clean foundations and processes. It is primarily a fixer's role rather than a management one, with real scope to shape how finance works. You will also coach a...

DevOps Engineer (Platform Automation) 6-Month Contract £500-£550 per day Inside IR35 Hybrid Working We're supporting a large enterprise organisation embarking on a major platform engineering and automation transformation. They're looking for an experienced DevOps Engineer to join a high-performing team focused on modernising software delivery, security automation and cloud platforms. The Role Design, build and enhance enterprise CI/CD platforms and automation solutions. Drive DevSecOps adoption through security, compliance and governance automation. Develop Infrastructure-as-Code and platform engineering capabilities. Support IAM, access management and security controls. Improve observability, monitoring and platform reliability. Collaborate with development, infrastructure, database and security teams to deliver scalable engineering solutions. Experience Required Strong background in DevOps, Platform Engineering or SRE. Hands-on...

Machine Learning Engineer 6 Month Contract £550 to £700 per day Inside IR35 Fully Remote The Opportunity A leading FTSE 100 organisation is seeking a Machine Learning Engineer to join its growing AI and data function. You'll play a key role in delivering machine learning solutions that support business critical initiatives across the organisation. Working within a collaborative team of data scientists, analysts and engineers, you'll help build, deploy and enhance AI products in a modern cloud environment. This is an excellent opportunity for someone who enjoys taking ideas from proof of concept through to production and wants to work with cutting edge AI technologies at enterprise scale Key Responsibilities Develop and deploy machine learning models to solve business challenges. Build and maintain scalable ML workflows and pipelines. Collaborate with Data Scientists and wider technology teams to productionise models. Develop high quality...

Here's a more hands-on Azure DevOps Engineer version rather than a Manager/Lead profile: Azure DevOps Engineer Global Risk Consulting Firm £500-550/day via Umbrella London Hybrid We're supporting a leading global risk consulting firm looking for an experienced Azure DevOps Engineer to join an initial 6-month engagement, with strong potential to transition into a longer-term Associate Consultant position. This is a hands-on engineering role focused on supporting, optimising and enhancing an established Azure DevOps environment. You'll work closely with development, infrastructure and delivery teams to improve CI/CD pipelines, automation, reporting and platform performance across a large-scale enterprise programme. Assignment Details London (1-2 days per week) Initial 6-month contract with strong extension potential £500-550/day via Umbrella Company Key Experience Required Strong hands-on experience with Azure DevOps (ADO) Building and...

Fractional Financial Controller VC-Backed Hardware Tech Scale-Up London / Hybrid The Client Harmonic is delighted to be partnering with a well-funded, VC-backed hardware technology business that combines its own software with physical manufacturing. The business has grown quickly into an international, multi-site operation and is now at the point where its accounting foundations need to catch up with the scale of its operations. The Role Reporting into the Finance Director, the Fractional Financial Controller will come in part-time between now and the end of January to own a focused set of manufacturing accounting work ahead of a permanent Financial Controller hire. The scope is narrow, specialist and high impact: designing a chart of accounts that fits a growing manufacturing business, and setting up the accounting policies and processes for work in progress, inventory, fixed assets and leases. This is a hands-on technical accounting role, not a general...

Part-time Interim Senior Marketing Manager / Head of Marketing Location: Central London (Hybrid) Rate: £450-£600 per day Start Date: ASAP Hours: 20 hours per week We are looking for a commercially minded, hands-on marketer to lead and shape the London marketing strategy for a fast-growing premium healthcare and wellness business. This is a unique opportunity to become the first dedicated marketing lead in the UK, taking ownership of customer acquisition, strategic partnerships and local growth initiatives. Working closely with senior leadership, you will have the autonomy to build, execute and optimise marketing activity that drives measurable commercial results. The Opportunity This role would suit an ambitious marketer who enjoys operating in a fast-paced, entrepreneurial environment and wants the chance to make a genuine impact. You will have the opportunity to shape a growing UK business and play a key role in its future success. What...

An exciting high-growth technology business is looking for a Senior Backend / Platform Engineer Contractor to support the development and scaling of a critical internal platform. This is a hands-on role focused on backend engineering, cloud infrastructure and platform scalability within a fast-paced product environment. Based in: London (primarily remote) Occasional office travel required 6 months initially Start date: ASAP £500-£600 per day - Outside IR35 The Job As the Senior Backend / Platform Engineer , your responsibilities will include: Developing and enhancing backend services and APIs Improving platform performance, reliability and scalability Designing solutions to support growing data volumes and user demand Working with cloud infrastructure and deployment tooling Supporting integrations with third-party systems and services Implementing monitoring, logging and observability capabilities Collaborating with product and engineering...

Role: Our client is looking for immediate, temporary, FP&A Manager to assist them for 3 - 6 months. You be will be responsible for following duties: Lead the preparation of the 2027 budgets across the group. Work closely with budget owners and senior stakeholders to challenge assumptions and validate numbers Produce detailed budget commentary, financial analysis and supporting business plans Strong budgeting experience and commercial awareness Profile: The successful, temporary FP&A Manager will be qualified (Eg. ACA, ACCA, CIMA or an equivalent qualification) and have experience working within an SME business. You must be immediate or 1 weeks notice to be considered for this role. Client: Our client are a leading commercial property business based in London. You will have the opportunity to work in a fast paced, dynamic environment. Salary & Benefits: The temporary FP&A Manager roles will be paying circa £425 - £475 per day,...

Role: Our client is looking for immediate, temporary, Management Accountant to assist them for 6 months. You be will be responsible for following duties: Support project accounting activities, ensuring accurate financial reporting and analysis. Drive process improvements across the finance function, identifying opportunities to streamline and enhance existing procedures. Review and improve reporting and intercompany processes to increase efficiency and accuracy. Assist with month-end close and the preparation of monthly management accounts. Prepare and review balance sheet reconciliations and Profit & Loss accounts. Review and analyse group reporting packs, ensuring accuracy and consistency of financial information. Manage audit requests, providing supporting documentation and responding to queries. Support financial information requests from the Private Equity (PE) house, ensuring accurate and timely reporting. Assist with due diligence requests,...

Our Client Our client is a well-known international not-for-profit organisation delivering impactful programmes across multiple regions worldwide. They are embarking on a significant finance transformation programme and are seeking an experienced Transformation Consultation to lead the design and delivery of a future-fit finance operating model. This is a high-profile opportunity to shape finance processes, systems, and ways of working within a complex, mission-driven organisation. The Role Key responsibilities will include: Leading an end-to-end finance transformation programme, focusing on people, processes, governance, and technology. Reviewing existing finance operations to identify pain points, inefficiencies, and opportunities for improvement. Designing and implementing a future-state finance operating model aligned to organisational strategy. Managing the selection, procurement, and implementation of a new finance system. Driving process redesign and...

Role: Our client is looking for an immediate, temporary, Financial Modeller to assist them for 3 months. You will be responsible for the following duties: Own the group finance model Enhance current model, adjustments and improvements Maintain cashflow, working capital, convent and return on investment models. Analysis Scenario / what if modelling System - NetSuite Profile: The successful, temporary Financial Modeller will have great Excel skills and Power Query experience. You must be immediate or 1 weeks notice to be considered for this role. Client: Our client are a Renewable Energy Company based in London. You will have the opportunity to work in a fast paced, dynamic environment. Salary & Benefits: This temporary Financial Modeller will be paying circa £450-£500 per day via an umbrella company, dependant on experience. Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent...

Interim Head of Finance Scaling Payments FinTech London (Hybrid) The Opportunity We are working with a fast-scaling FinTech that has grown quickly to serve a large customer base and is now at an important turning point. There is real momentum behind the business and ambitious plans ahead, and it needs a steady, capable pair of hands to lead its finance team through a busy period of change. For an interim finance leader who likes to roll up their sleeves and make a tangible difference quickly, this is a rare one, and the client is looking to move at pace. Your Remit Working closely with the CFO, you will take the reins of the day-to-day finance function at a demanding time. First and foremost this is a hands-on role: steadying and leading the team, keeping month-end, statutory and technical accounting clean and on time, and quickly getting to grips with a complex, sector-specific P&L. Beyond the day-to-day, you will take a hard look at how the team is...

Interim Senior Finance Manager High-Growth D2C Subscription Business London/Hybrid Harmonic are delighted to be partnering with a high-growth, investor-backed D2C subscription business in their search for an Interim Senior Finance Manager on a 6 month contract, who has strong experience owning month-end and leading an external audit. The business has scaled quickly to a team of several hundred and handles a high volume of customer payments. With the year-end audit approaching, they need an experienced finance professional to keep financial control tight and lead the audit preparation, providing cover while a permanent appointment is made. This opportunity will suit someone with strong technical accounting and audit experience who is happy to be hands-on, cares about controls and process, and can get up to speed quickly. The Role Working closely with the Director of Finance and the FP&A team, you will own the month-end close, day-to-day finance operations and the...

Electrical Project Manager (Water Treatment Works) Location: Bexleyheath, Greater London / Kent Contract Rate: £450 - £500 per day (LTD - IR35 Determination Pending) Duration: 18 Months (AMP8 Framework) Start Date: Immediate / ASAP Project Overview We are seeking an experienced, Electrical-biased Project Manager to lead major electrical upgrades across an operational Water Treatment Works (WTW) in Bexleyheath. This 18-month contract offers long-term stability within the AMP8 investment cycle. You will take full end-to-end accountability for managing electrical packages-including Motor Control Centres (MCCs), high/low voltage power distribution, switchgear, cabling networks, chemical dosing systems, and instrumentation integration-from initial scope through to site installation, commissioning, and final client handover. Key Responsibilities Package & Delivery Management: Drive electrical workstreams to time and budget, ensuring...