Role: Civil Principal Contractor Site Manager (PCSM) - National Grid Location: North London Duration: 12 months, rolling Day Rate: 600 - 650 per day (Outside IR35) Start Date: Immediate / ASAP About the Role We are seeking an experienced Civil PCSM to lead high-voltage substation and infrastructure upgrade projects. You will act as the primary point of contact for site safety, compliance, and delivery, ensuring all works align with strict National Grid standards. Key Responsibilities Site Leadership: Manage daily civil engineering and construction activities safely. Compliance: Enforce National Grid SR163 supplier requirements on-site. Safety: Direct temporary works, excavation safety, and risk assessments. Coordination: Act as the main liaison between subcontractors and stakeholders. Essential Requirements Accreditation: Current National Grid SR163 PCSM qualification. Safety: Valid SMSTS and up-to-date First Aid at Work. Technical:...

.Net Developer (Contract) Duration: 12 Months (Possibility for extension) Location: Bromley/Hybrid (3 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Overview We are seeking a skilled Software Developer to join our dynamic development team. In this role, you will be responsible for developing, enhancing, and supporting a range of critical applications built on the .NET framework (4.6+), alongside some Python work. You will collaborate with technical and business colleagues across various locations, including North Carolina, Jersey City, Singapore, India, and London. Key Responsibilities: Develop and maintain high-quality software applications using .NET (4.5+ / .NET Core) and Python. Collaborate with cross-functional teams to gather requirements and design effective solutions. Provide support to team members and stakeholders to ensure smooth project execution. Liaise...

SENIOR QUANTITY SURVEYOR LONDON 2-MONTH CONTRACT I'm currently recruiting for a Tier 1 Main Contractor looking for an experienced Senior Quantity Surveyor to join their team on a 2-month contract in London. The Role: Senior QS position with a leading Tier 1 Main Contractor London-based project 2-month initial contract 600- 625 per day - Umbrella/ Inside IR35 Up to 450 daily Ltd Company options may be considered for the right individual Immediate availability preferred Looking for: Strong Main Contractor background Proven experience operating at Senior QS level Strong commercial and contractual knowledge Experience managing packages, subcontractors, valuations, variations and final accounts Tier 1 experience highly desirable If you're a Senior QS available immediately and interested in a short-term contract with a major contractor, get in touch for more information. Aldwych Consulting values diversity and promotes equality. No terminology...

Infrastructure Engineering Specialist - DV Cleared Daily Rate: Up to 600 (inside IR35 via umbrella) Contract Length: 12 months 5 days onsite in London or Ipswich Are you ready to make a difference? Join a specialist team that is a trusted partner to governments worldwide, safeguarding critical national infrastructure and ensuring the safety and security of our nation and global communities. Your expertise will be pivotal in innovative and technologically challenging projects that promise to keep your work stimulating and rewarding! Why You'll Love Working Here: Exciting Projects: Work on rare and impactful projects that directly contribute to the safety and resilience of communities. Professional Growth: Access unparalleled opportunities for personal and professional development, where your contributions are always valued. Dynamic Environment: Collaborate with brilliant minds and utilise cutting-edge tools to shape the future of infrastructure systems. Role Impact: In this...

Job Opportunity: Financial Reporting and Control VP Are you ready to take your career to the next level in the finance industry? Our client, a leading organisation in the financial services sector, is seeking a Financial Reporting and Control VP to join their dynamic team! This exciting role offers you the chance to work across UK legal entity control teams and play a pivotal part in driving change initiatives that enhance efficiency and deliver impactful results. Contract: Until 31/03/2027 Location: London 2-3 days onsite per week Rate: .29 per day (umbrella) What You'll Do: Collaborate with legal entity F&C teams for Head Office reporting submissions. Standardise core legal entity reporting by identifying opportunities for improvement. Own and enhance sub-processes to facilitate the financial close process, including intercompany reports and reconciliations. Provide high-quality analytical support to aid senior management in decision-making....

Interim Head of Finance FCA-Regulated FinTech London / Hybrid The Client Harmonic is delighted to be partnering with a growing FinTech scale-up in the financial services space. Backed by an experienced leadership team and now trading at meaningful scale, the business is moving from its traditional finance roots toward a more product-led culture, with a finance-literate CEO driving a new phase of operational maturity. It operates in a regulated environment and is at an interesting inflection point. The Role Reporting into the COO (with a dotted line into the CEO), the Interim Head of Finance will take ownership of the day-to-day finance function through a period of leadership transition. This is a hands-on role first and foremost: the priority is to steady the function, keep financial control, reporting and planning running cleanly, and get up to speed quickly with a complex fee model. Alongside the operational core, you will act as the second-line owner for client...

Role: Interim Head of HR Sector: Civil Service Duration 6 Months Location: London, 3 days a week onsite. Salary: up to 650 UMB per day Sellick Partnership is currently recruiting for an experienced Head of HR to join our public sector client on a fixed term contract for 6 months. This role is offered on a hybrid basis with a minimum of 3 days a week onsite, in London. The Head of HR will support the HR function which is fully aligned to the delivery of the organisation's strategic objectives, including the management of people risks. The appointed candidates will provide highly informed and sound advice to managers on all staff related issues, acting as a source of trusted advice to the senior leadership team. The Head of HR will offer thought leadership on innovation and best practice across strategic and practical HR matters, ensuring that any change is relevant and achievable for the organisation. The duties of the Head of HR include: Being...

Freelance M&E Quantity Surveyor - Major Commercial High-Rise Location: City of London Sector: Commercial High-Rise / MEP Building Services Contract Type: Freelance / Contract Duration: 3-6 Months (Initial contract, with strong likelihood of extension) IR35 Status: STRICTLY INSIDE IR35 (PAYE / Approved Umbrella) Pay Rate: (Apply online only) per day (DOE) The Opportunity Are you an experienced Freelance M&E Quantity Surveyor available for an immediate or short-notice contract assignment? A Tier-1 Main Contractor is seeking an autonomous, commercially sharp MEP Contract Quantity Surveyor to join their site-based team on a flagship 650,000 sq. ft, 36-storey, all-electric commercial high-rise in the City of London. Following the transition from the pre-construction phase into main construction works, this 3 to 6-month contract assignment (Inside IR35) offers the chance to hit the ground running on one of the UK's most ambitious, low-carbon, and...

Job Title: Performance Manager Location: Warwick / London / Hybrid Contract Type: 6 months contract Job Purpose We're working with a leading organisation operating in a complex, regulated environment to appoint a Performance Manager. This is a high-impact leadership role responsible for shaping how performance is defined, measured, and understood at executive level. You will ensure senior leaders and the Board receive clear, timely, and high-quality insight that supports confident, evidence-based decision making. You will combine strong analytical capability with strategic thinking, stakeholder influence, and people leadership-translating complex operational, financial, and commercial data into clear executive narratives. What You'll Be Doing You will own and evolve the organisation's performance management approach, ensuring it is robust, relevant, and aligned to strategic priorities. Key responsibilities include: Performance Framework...

Great opportunity to work with this leading international Consulting Engineers who are looking to bring on board a driven and experienced Senior Electrical Design Engineer, Outside IR35, to be an active part of a specialist design team consultancy to work on a variety of Hyper scale Data Centre projects. Key Responsibilities:- Create electrical design drawings and specs for Data Centre Projects. Ensure designs meet all standards and regulations. Support sustainable design and use of innovative tech Work closely with colleagues, clients, architects, and contractors Manage project deadlines, budgets, and deliverables. About you: You should hold Degree (or historic equivalent) in Electrical Engineering or related field.- Should have extensive experience in Mission Critical design and building services design, specifically on data centres.- Sound knowledge of British Standards and building regulations.- Strong communication skills.-. Your expert recruitment consultant is...

Network Automation Architect Daily Rate: Up to 740 (inside IR35 via umbrella) Contract Length: 8 months Hybrid working - London, Bristol or Birmingham Join Our Innovative Team! Are you ready to take your career to the next level? Our client is seeking a talented Network Automation Architect to drive the future of complex network and data centre solutions. If you're passionate about automation, network engineering, and creating impactful solutions, we want to hear from you! About the Role: As a pivotal member of our team, you will play a vital role in translating low-level designs into production-grade automation solutions. You'll work at the intersection of network engineering and automation, utilising your deep expertise in Cisco data centre networking while building Infrastructure as Code (IaC) and CI/CD pipelines. Your work will ensure stability, repeatability, and change assurance across customer environments. What You'll Be Doing: Build and maintain network automation...

Marketing Data Operations Lead (Contract) Duration: 6 Months (Possibility for extension) Location: London (3 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Overview As the Marketing Data Operations Lead, you will provide essential operational, technical, and data management support throughout the lifecycle of our onsite and digital marketing projects. Your expertise in data-driven planning, comprehensive project management, and analytics will be pivotal in evaluating marketing outcomes and ensuring the accuracy of business impact measurement. Key Responsibilities: Data Management: Oversee the gathering, cleaning, normalisation, and maintenance of large volumes of structured and unstructured data across multiple internal systems. KPI Tracking & Analysis: Evaluate marketing outcomes through robust KPI tracking, business impact analysis, and shadow accounting...

Fractional Finance & Operations Director Investor-Backed SaaS Scale-Up 2 days per week The Client Harmonic is delighted to be partnering with a high-growth SaaS business building technology used across the global financial services space. Recently investment used to fund international expansion, the business is scaling quickly and now needs the finance and operational infrastructure to match. This is a rare chance to shape the back-office of a genuinely differentiated technology company at an early, formative stage. The Role The Fractional Finance & Operations Director will own finance, day-to-day operations, and HR across the business. This is a hands-on, broad remit for someone who is happy rolling up their sleeves across everything from management accounts and cashflow through to operational process and people administration. The role starts at around two days per week on-site, with clear scope to increase days as the business grows. You will be the...

Job Title: Senior Data Scientist Contract Type: Fixed Term (6 Months) Working Pattern:3 days per week in office Location: London, UK (Farringdon) Pay: 500 to 750 per day Inside IR35 Are you ready to dive deep into the world of data and transform complex business challenges into actionable insights? Our client, a leading organisation in the retail industry, is on the lookout for an enthusiastic and skilled Senior Data Scientist to join their innovative team! About the Role: As a Senior Data Scientist, you will play a pivotal role in harnessing the power of data to drive strategic decisions across various domains-ranging from online services and pricing to supply chain management and marketing. Key Responsibilities: Hands-On Analysis: Leverage your analytical mindset to tackle complex business problems and prototype effective solutions. Algorithm Design: Apply, modify, and design advanced algorithms and mathematical models to extract meaningful insights from large data...

Job Title: Senior Data Scientist Contract Type: Fixed Term (6 Months) Working Pattern:3 days per week in office Location: London, UK (Farringdon) Pay: 500 to 750 per day Inside IR35 Are you ready to dive deep into the world of data and transform complex business challenges into actionable insights? Our client, a leading organisation in the retail industry, is on the lookout for an enthusiastic and skilled Senior Data Scientist to join their innovative team! About the Role: As a Senior Data Scientist, you will play a pivotal role in harnessing the power of data to drive strategic decisions across various domains-ranging from online services and pricing to supply chain management and marketing. Key Responsibilities: Hands-On Analysis: Leverage your analytical mindset to tackle complex business problems and prototype effective solutions. Algorithm Design: Apply, modify, and design advanced algorithms and mathematical models to extract meaningful insights from large data...

Senior Communications Lead Location: London Contract Type: Contract (Onsite) Rate: 550- 635 per day Duration: 12 months (Inside IR35) Clearance: Must be eligible for DV clearance The Opportunity We're currently seeking an experienced and strategically minded Senior Communications Lead to join a high-performing organisation operating within a complex, fast-paced and highly professional environment. This role sits at the heart of a growing communications and engagement function, helping to strengthen brand presence, stakeholder engagement and external communications activity across a diverse portfolio of initiatives and programmes. You'll play a key role in ensuring the organisation communicates consistently, credibly and effectively across multiple channels, audiences and stakeholder groups. From developing compelling content and managing digital platforms through to supporting events, campaigns and engagement activities, you'll help shape how the...

Cassandra Database Engineer Location: London (1 - 2 days per week onsite) Contract Length: 6 Months initially Daily Rate: Up to 730 (inside IR35 via umbrella) Are you a passionate Cassandra Database Engineer looking to make a significant impact in the financial technology landscape? Our client, a leading organisation in the banking sector, is seeking a talented individual to join their Financial Crime Technology team! This is a fantastic opportunity to utilise your NoSQL expertise in a fast-paced environment and contribute to enhancing fraud detection capabilities. Key Responsibilities: Design & Implement: Craft Cassandra keyspaces, data models, and cluster architecture tailored for a high-throughput fraud detection platform. Collaborate: Work closely with application and middleware teams, ensuring seamless data integration and alignment with business goals. Optimise: Take ownership of keyspace design, performance tuning, and operational readiness of the data platform....

Interim Assistant Director, Building Control Ealing Council. Perceval House, Ealing 6 Months Initial Contract 700- 800 per day (Inside of scope of IR35) Adecco is working in partnership with Ealing Council to recruit an Interim Assistant Director, Building Control. This is a high-profile interim leadership opportunity for an experienced Building Control professional to lead Ealing Council's Building Control Service during a period of significant legislative and regulatory change. Reporting to the Strategic Director for Economy & Sustainability, you will provide both strategic and operational leadership across all Building Control functions, ensuring compliance with the Building Regulations, Building Safety Act, Fire Safety legislation and associated regulatory requirements, whilst delivering a customer-focused, commercially aware and high-performing service. You will be responsible for leading the Council's Building Control team, driving service improvement,...

Cassandra Database Engineer - NoSQL (Contract) Duration: Up until 31 March 2026 (Possibility for extension) Location: London/Hybrid (3 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Purpose The Financial Crime Technology team requires specialist Apache Cassandra (NoSQL) expertise to support the design and operational readiness of high-volume, real-time data platforms underpinning the fraud detection ecosystem. This capability does not currently exist in-house, as the team's core expertise is centred on Actimize application engineering, Oracle PL/SQL, and integration middleware (IIB/MQ). This is a time-bound requirement aligned to specific deliverables, including the real-time payment capture and replay platform and its supporting data infrastructure, rather than a permanent headcount need. As such, a contract engagement is the most appropriate and cost-effective resourcing...

Technical Delivery Manager (Contract) Duration: Up until 31 March 2026 (Possibility for extension) Location: London/Hybrid (3 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Profile This role supports the rollout of a strategic Digital Workflow Platform based on Camunda 8, aimed at modernising process orchestration and automation across EMEA. The platform will enable standardised BPMN-driven workflows, improved operational efficiency, and reduced reliance on legacy workflow technologies. The role is embedded within EMEA IT and works closely with the BPMN CoE, platform engineering teams, and business delivery stakeholders. It combines platform implementation support with hands-on project management of early adoption use cases, alongside helping to manage and prioritise a growing demand pipeline. Key Responsibilities: Manage end-to-end delivery of assigned workflow...