INFORMATION FOR REGISTERED CANDIDATES WITH HARNHAM


KIDÂ DOCUMENTS
On this page you will find your KID (Key Information Document) and information about the alternative options available to you via our preferred list of Umbrella companies.
UMBRELLA COMPANY 1
GIANT - For almost 30 years giant have provided specialist, end to end workforce management software and support services to large and small recruitment agencies, internationally.

UMBRELLA COMPANY 2
PAYSTREAM - A market leading business providing a range of payroll and accountancy services for recruitment agencies and contractors.

UMBRELLA COMPANY 3
SAPPHIRE - Working through our umbrella company is a quick and easy solution for contractors, without having to file paperwork. By joining Sapphire, we’ll be with you every step of the way by offering you top of the line employment support and benefits.

UMBRELLA COMPANY 4
WORKWELL (FORMERLY JSA) - Enjoy the freedom & flexibility of contracting whilst they provide benefits such as holiday and sick pay. Unlike a limited company structure, there’s no admin to worry about – you simply work and get paid, and they take care of the rest.

JOBS
LATEST CONTRACT
OPPORTUNITIES
Harnham are a specialist Data & Analytics recruitment business with a dedicated Contract and Freelance team, working across the UK, US and Europe.

LLM Architect
London
£500 - £600
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Our client is looking for a LLM Architect to help design and build a chatbot that will assist in managing their App Store Optimization.
The chatbot will leverage data from their platform, including keyword rankings, impressions, and competitive analysis.
It will also ingest information on ASO activities performed by clients, such as metadata updates and in-app events.
You will help our client understand technical requirements, and design the overall architecture.
To Apply for this Job Click Here

Tagging Implementation Specialist – Ensighten
City of London
£300 - £400
+ Digital Analytics
ContractCity of London, London
To Apply for this Job Click Here
Tagging Implementation Specialist
£300-£400 per day (Outside IR35)
Fully remote
3 Month Engagement
Role and Responsibilities:
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Lead the transition away from Ensighten: Provide support during the initial phase of moving off the Ensighten platform, including planning, coordination, and communication, before handing over to the internal team.
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Assess and advise on cookie policy approaches: Engage with candidates and stakeholders to understand, evaluate, and recommend best practices around cookie usage and compliance.
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Extensive hands-on experience with tag management systems: Strong practical experience across multiple platforms is essential, particularly Ensighten and Segment (CDP).
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Desirable: familiarity with Droople and financial services or insurance: Experience with Droople or within financial services and insurance sectors would be advantageous.
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Client-facing skills: Confident in communicating with clients, understanding their needs, and ensuring a smooth transition process.
Requirements:
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Proven experience leading transitions away from Ensighten, with the ability to manage the early stages of migration before handing over to internal teams.
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Strong understanding of cookie policies, with the ability to assess current practices and provide recommendations in line with compliance and user experience best practices.
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Extensive hands-on experience with tag management and CDP tools, particularly Ensighten and Segment.
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Experience with Droople is desirable, as is a background in financial services or the insurance sector.
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Excellent client-facing skills, with the ability to clearly communicate technical information and manage stakeholder expectations throughout the transition process.
To Apply for this Job Click Here

Ensighten Implementation Consultant
London
£300 - £400
+ Digital Analytics
ContractLondon
To Apply for this Job Click Here
Contract Opportunity: Ensighten Implementation Consultant – £300-£400/day – Outside IR35 – Fully Remote
Are you an experienced Ensighten Implementation Consultant with a passion for clean, scalable tag management solutions? We’re working with a leading Digital Agency supporting a high-profile client in the financial services sector, and they need your expertise immediately.
The Role:
You’ll play a key role in helping the agency migrate away from Ensighten to Google Tag Manager (GTM). This is an ad hoc, flexible contract offering a great opportunity to work alongside another seasoned contractor.
✅ Key Responsibilities:
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Lead and support the migration from Ensighten to GTM.
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Provide expert implementation and troubleshooting support.
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Collaborate with internal teams and external stakeholders in a client-facing capacity.
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Ensure accurate data collection and tracking using GA4.
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Offer strategic input on best practices for tag management.
Ideal Skillset:
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Strong Ensighten experience (configuration, implementation, decommissioning).
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Proven GTM expertise.
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Solid understanding of Google Analytics 4 (GA4).
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Excellent client communication skills – this is a hands-on, visible role.
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Self-starter comfortable with remote, ad hoc work.
Bonus Points for:
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Experience with Drupal and Segment CDP.
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Background in the financial services industry.
Contract Details:
-
Rate: £300-£400 per day
-
Outside IR35
-
Fully remote – Candidate must have Right to Work in UK
-
Start: Immediate
Reach out to Grace McCrudden at Harnham for more info
To Apply for this Job Click Here

Loyalty Manager
City of London
£400 - £450
+ Advanced Analytics & Marketing Insights
ContractCity of London, London
To Apply for this Job Click Here
Loyalty Proposition Manager – 12 Month Contract
Location: Hybrid (2-3 days a week in South West London) + occasional international travel
Day Rate: £400-£450 per day (Outside IR35)
Contract Length: 12 months
Start Date: ASAP
We’re partnering exclusively with a leading international retail group to recruit a Loyalty Proposition Manager on a 12 month contract. This newly created role has been driven by ambitious strategic growth plans and offers the chance to help shape the future of loyalty across a diverse European brand portfolio.
The Opportunity
Working as part of a high-performing Centre of Excellence, you’ll support the development of loyalty strategies across a portfolio of brands – with immediate focus on two in particular. The role is strategic and proposition-focused – not about CRM execution or campaign delivery.
You’ll collaborate closely with existing loyalty team members (including a Loyalty Manager and Loyalty Specialist).
Key Responsibilities
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Develop and evolve loyalty strategies and customer propositions across key brands, both digitally and in-store.
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Take ownership of end-to-end customer journeys across channels, identifying opportunities for improvement and innovation.
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Partner with group tech, data, commercial and brand teams to roll out strategies and ensure cohesive delivery.
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Support a 3-6 month test-and-learn initiative to build a proof of concept for the two brands focusing on both online and offline scalability.
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Shape the longer term loyalty roadmap for the business based on customer insight and performance data.
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Stay ahead of loyalty trends, including tiered, point-based and subscription models.
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Operate in a consultative capacity within a Centre of Excellence model – influencing local market teams.
Who We’re Looking For
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Strong experience in loyalty proposition development.
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Experience working across both digital and in store loyalty propositions.
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Confident communicator with excellent stakeholder skills.
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Previous experience working within or alongside European markets is a strong advantage.
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Knowledge of loyalty mechanics including tier-based models or subscriptions is a plus.
To Apply for this Job Click Here

Marketing Operations Specialist (Contract)
Morristown
$51 - $60000
+ Advanced Analytics & Marketing Insights
ContractMorristown, New Jersey
To Apply for this Job Click Here
Marketing Operations Specialist
Location: Hybrid (Morristown, NJ) – ideally 3 days onsite per week, 2 days remote
Contract: 6 months with possibility of extension or conversion to full-time
About the Role
You will be joining a global company specializing in innovative skincare solutions. Its portfolio includes sunscreens, anti-aging treatments, and products addressing specific skin concerns, widely recommended by dermatologists worldwide. This is an exciting opportunity for someone who thrives in fast-paced environments, is passionate about both the creative and operational sides of marketing, and enjoys supporting a high-performing sales organization.
Key Responsibilities
Creative Design Execution
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Create and update marketing materials (sales aids, patient brochures, banners, promotional sheets, displays)
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Oversee custom promotional items (training cards, tear pads, in-office displays)
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Coordinate with outsourced designers and printers for high-quality, cost-effective materials
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Maintain organized high-resolution brand assets on shared drives
Operational & Project Support
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Coordinate with HQ to obtain material codes and set them up in SAP and warehouse systems
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Manage creation, shipment, and orderability of marketing materials
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Ensure timely design and deployment of monthly promotions
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Track and forecast inventory needs; restock materials with printers and HQ
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Support budget tracking, invoice processing, and PO preparation
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Drive projects to streamline processes, improve vendor workflows, and optimize inventory management
Sales Rep Support
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Facilitate monthly marketing orders and event-specific requests
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Manage onboarding marketing kits and business card orders
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Respond to daily rep support needs
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Track and troubleshoot shipments as needed
Must Have
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2+ years of experience in marketing operations or a similar support role
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Experience working with or supporting sales functions
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Graphic design skills with proficiency in Canva, Photoshop, or Adobe InDesign
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Strong organizational and time-management skills
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Excellent communication with a professional, clear, and proactive approach
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High sense of urgency with ability to prioritize and multitask
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Comfortable working across teams, including international counterparts and external vendors
To Apply for this Job Click Here

Software Engineer/DevOps Engineer
Worcester, MA
$60 - $70
+ Data Engineering
ContractWorcester, Massachusetts
To Apply for this Job Click Here
Role Overview
We’re looking for someone who can take the lead on building and maintaining release and deployment systems for an advanced software platform connected to physical devices. This person should be comfortable navigating complex cloud setups, managing services running in containers, and contributing to a codebase written in modern systems languages.
What You’ll Tackle
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Set up and manage automated delivery workflows across a major cloud platform, using its full feature set
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Handle container-based environments that support software controlling hardware
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Work through deployment and compilation issues in a modular, service-based system written mostly in Python and C++
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Partner with developers to get up to speed on a sophisticated codebase powering a next-generation physical product
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Make progress independently using thorough documentation and working examples-without needing close oversight
Must-Haves
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5+ years working in roles focused on infrastructure, tooling, or systems
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Hands-on experience managing containers, cloud resources, and release automation (experience with a typed scripting language is key)
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Solid programming fundamentals: understanding data structures and algorithms, and fluency in at least one mainstream language such as Python or C++
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US-based and eligible for federal work (background check required)
Bonus Skills
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Background working with physical hardware, robotics, or edge-connected devices
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Familiarity with declarative environment config tools (e.g., tools that define infra as code)
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Exposure to low-level container runtimes
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Knowledge of modular application design and orchestrated service patterns
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Worked within iterative project management frameworks (or close variants)
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Experience with logging and alerting systems tied to cloud infrastructure
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Enjoys refining development processes and tooling
Other Notes
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We’re open to individuals with 5 to 20+ years in the software world
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This is a US-only opportunity, and all candidates must pass a background screen before joining
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Two technical interviews will be required: one internal, one with the client
To Apply for this Job Click Here

Senior Full-Stack/Data Engineer
London
£450 - £500
+ Computer Vision
ContractLondon
To Apply for this Job Click Here
You’ll also support image segmentation, real-time 3D asset generation, and contribute to intelligent BI tools and RAG-based features that enrich the meeting experience.
Must-Haves
- YOLO expereince
- Generate 3D visual assets from static images
- Full-stack engineering background (TypeScript preferred)
- Strong backend and systems experience
- Comfort with AWS, DynamoDB, PartiQL
- Experience building and owning microservices end-to-end
- Experience with API integrations, scheduling, data pipelines
- Fast, pragmatic, startup-minded engineer who can wear multiple hats
Nice-to-Haves
- Image segmentation (YOLO or similar)
- 2D to 3D asset conversion
- Familiarity with real-time video/image workflows
- RAG pipelines and LLM integration
- Unreal Engine or similar 3D platforms
To Apply for this Job Click Here

Full Stack AI/ML Engineer
City of London
£400 - £500
+ Computer Vision
ContractCity of London, London
To Apply for this Job Click Here
Company Overview
This is a VC-backed spinout from a £50m+ revenue parent business, born out of a highly successful virtual events service developed during the pandemic. The original model paired high-end live video production with a managed virtual platform, used by senior executives and FTSE-level sponsors for industry roundtables.
The goal now is to take that model-traditionally powered by a live production crew-and turn it into a lower-cost, scalable SaaS platform using real-time AI, 3D graphics (Unreal Engine), and automation. The MVP is nearly ready and the platform is now hiring key engineers to help take it to the next stage.
Must-Haves
ï‚· Full-stack engineering background (TypeScript preferred)
ï‚· Strong backend and systems experience
ï‚· Comfort with AWS, DynamoDB, PartiQL
ï‚· Experience building and owning microservices end-to-end
ï‚· Experience with API integrations, scheduling, data pipelines
ï‚· Fast, pragmatic, startup-minded engineer who can wear multiple hats
Nice-to-Haves
ï‚· Image segmentation (YOLO or similar)
ï‚· 2D to 3D asset conversion
ï‚· Familiarity with real-time video/image workflows
ï‚· RAG pipelines and LLM integration
ï‚· Unreal Engine or similar 3D platforms
To Apply for this Job Click Here

Qlik Developer
London
£500 - £550
+ Advanced Analytics & Marketing Insights
ContractLondon
To Apply for this Job Click Here
Qlik Developer / Qlik Analyst (CONTRACT)
£500 – £550 PER DAY (INSIDE IR35)
6 MONTHS
HYBRID – LONDON (UP TO 3 DAYS PER WEEK IN OFFICE)
Are you confident creating impactful dashboards and delivering clear visual insights with Qlik? A major UK-based company is seeking a talented and commercially-minded individual to support their migration to Qlik Cloud and help drive analytics through agile stakeholder collaboration and creation of dasshboards.
THE COMPANY:
This leading organisation is well-established in the UK market and plays a vital role in the telecoms and digital infrastructure sector. The team works in sprints to deliver high-value data solutions across the business.
THE ROLE:
This role will support a high-profile Qlik migration to Qlik Cloud while responding to an ongoing stream of stakeholder requests. You’ll be delivering insights in an agile way and creating dashboards that make an impact.
Specific duties as a Qlik Developer include:
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Supporting the migration of existing reports and dashboards to Qlik Cloud
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Responding to stakeholder requests in sprints and prioritising delivery accordingly
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Building and optimising dashboards from scratch in Qlik based on business needs
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Communicating insights clearly to both technical and non-technical stakeholders
YOUR SKILLS AND EXPERIENCE:
To succeed in this role, you will need:
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Strong commercial experience developing dashboards with Qlik (Qlik Sense ideally)
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Deep knowledge of SQL and strong hands-on experience querying databases
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Excellent communication skills with a commercial, stakeholder-focused mindset
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Ideally, experience with GCP or another cloud platform (AWS, Azure etc.)
THE BENEFITS:
This contract offers £500 – £550 per day (Inside IR35) for an initial 6-month period, with the opportunity to work on-site in London up to 3 days per week and remote otherwise.
HOW TO APPLY:
Register your interest by clicking the apply link on this page or emailing with your latest CV and a short summary of why you’re a strong fit for the role.
UK-based candidates only.
To Apply for this Job Click Here

Data Analyst
London
£375 - £425
+ Data Engineering
ContractLondon
To Apply for this Job Click Here
Data Analyst (Data Wrangler, SQL, Python)
Location: Primarily remote (occasional collaboration days in London)
Contract: Until end December 2025 (strong possibility of extension)
Day Rate: £375-£425 (IR35, TBC)
About the Role
Join a specialist team within a leading financial services advisory consultancy, working on a high-profile, confidential investigation. This role is heavily focused on extracting, wrangling and preparing extremely large datasets to support complex forensic analysis and reporting.
Responsibilities
-
Perform extensive data wrangling to clean, structure and prepare large datasets from multiple sources.
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Use SQL and Python (Pandas) to transform and load data into analytics environments.
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Conduct thorough quality checks, spotting inconsistencies or issues proactively.
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Support senior consultants by ensuring data is ready for robust comparative analysis and final reporting.
Why This Role Stands Out
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Consultancy experience is absolutely critical – candidates must come from a Big Four or equivalent consultancy environment. This ensures the ability to operate in fast-paced, multi-stakeholder projects, with a rigorous approach to quality and delivery.
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A forensic, investigative mindset is equally essential. This work involves dissecting sensitive datasets to identify discrepancies and support complex conclusions, far beyond typical data analyst or BI dashboard work.
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Requires expert-level SQL and Python (Pandas) skills to handle hundreds of millions to billions of rows across diverse data sources.
Key Requirements
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3-5 years’ data-focused experience in professional services or consulting environments.
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Proven track record in a Big Four or similar consultancy, delivering on complex, high-pressure projects.
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Advanced SQL for building, optimising and troubleshooting queries on very large static datasets.
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Expert Python scripting, with deep use of Pandas for data manipulation.
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Strong experience handling multiple data formats: Oracle databases, text files, XML.
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UK-based, with flexibility for occasional days in the London office.
Desirable
-
Experience with financial crime, regulatory or other forensic investigations.
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Data visualisation skills to help present findings clearly.
Quick Experience Checklist
3-5 years in data-focused roles
Consultancy / Big Four background (mandatory)
Expert SQL & Python (Pandas)
Forensic, investigative approach to data
Comfortable with extremely large datasets
UK-based, willing to attend occasional London collaboration days
To Apply for this Job Click Here

Data Engineer
City of London
£600 - £650
+ Data Engineering
ContractCity of London, London
To Apply for this Job Click Here
DATA ENGINEER – INVESTMENT FIRM
6-MONTH CONTRACT
£600 PER DAY INSIDE IR35
HYBRID
ABOUT THE COMPANY
A rapidly growing investment firm headquartered in London, which has doubled its team over the past 2.5 years and continues to attract strong investor backing. With 230+ employees and ongoing expansion, the company is now focused on becoming more AI- and data-enabled, modernising its infrastructure to support more advanced analytics and automation.
THE TEAM
You’ll join a skilled and collaborative analytics team of eight, working closely with senior leadership. The team has already laid the foundations for a modern data platform using Azure and Databricks and is now focused on building out scalable ETL processes, integrating AI tools, and delivering bespoke analytics solutions across the organisation.
THE ROLE
As a Data Engineer, you’ll play a pivotal role in designing and implementing robust data pipelines, supporting the migration from legacy Azure systems to Databricks, and working closely with stakeholders to deliver tailored data solutions. This role combines hands-on development with collaborative architecture design, and offers the opportunity to contribute to AI readiness within a fast-paced business.
KEY RESPONSIBILITIES
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Develop and maintain ETL pipelines, including manual and semi-manual data loads
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Connect and integrate diverse data sources across cloud platforms
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Collaborate with analytics and design teams to create bespoke, scalable data solutions
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Support data migration efforts from Azure to Databricks
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Use Terraform to manage and deploy cloud infrastructure
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Build robust data workflows in Python (e.g., pandas, PySpark)
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Ensure the platform is scalable, efficient, and ready for future AI use cases
REQUIRED SKILLS & EXPERIENCE
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Strong experience with Azure and Databricks environments
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Advanced Python skills for data engineering (pandas, PySpark)
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Proficiency in designing and maintaining ETL pipelines
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Experience with Terraform for infrastructure automation
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Track record of working on cloud migration projects, especially Azure to Databricks
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Comfortable working onsite in London 2 days/week and engaging cross-functionally
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Strong communication and problem-solving abilities
NICE TO HAVES
-
Experience with Qlik or other data visualisation tools
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Exposure to AI product integration or readiness projects
To Apply for this Job Click Here

Senior Data Wrangler / Engineer (Financial Services)
London
£300 - £400
+ Data Engineering
ContractLondon
To Apply for this Job Click Here
SENIOR DATA ENGINEER / DATA WRANGLER – (FINANCIAL SERVICES)
6-MONTH CONTRACT
£400 PER DAY (INSIDE IR35)
ASAP START
THE COMPANY
Join a prestigious financial services consultancy supporting top-tier clients on sensitive, high-impact forensic data analytics projects. Operating under strict NDAs, the firm tackles complex financial investigations involving billions of records from multiple sources. You’ll be part of a dynamic team transforming raw data into actionable insights for reporting and compliance.
THE ROLE
As a Senior Data Engineer / Data Wrangler, you will lead the organization, transformation, and validation of massive financial datasets (Oracle, SQL, XML, CSV, text). Your focus will be on data lineage, comparative analysis, and forensic data engineering to ensure data accuracy and usability. You’ll collaborate closely with stakeholders through frequent stand-ups and continuous monitoring, driving data quality in an intense, fast-paced environment.
Key responsibilities:
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Wrangle, format, and organize large financial data sets for reporting and analysis
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Develop and maintain Python scripts (using pandas) for forensic data processing
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Write and optimize SQL (T-SQL and Oracle) for data extraction and validation
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Perform comparative and lineage analysis to identify data inconsistencies
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Initially able to work onsite regularly with flexibility, particularly during early stages of the contract
KEY SKILLS & REQUIREMENTS
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3-5 years minimum in data engineering or forensic analytics
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Very strong SQL skills, including T-SQL and Oracle
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Proficient in Python scripting with pandas
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Experience working with large financial data sets and complex formats
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Background in financial services consultancy or investigative firms (e.g., EY, PwC, Deloitte, Goldman Sachs) highly desirable
-
Ability to work onsite regularly and commit fully to project timelines
DESIRABLE
-
Experience handling sensitive financial data under NDA
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Comfortable working in on-premise environments
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Forensic data analysis experience
This is an excellent opportunity to work on a high-profile project with leading financial clients, delivering critical insights through expert data wrangling and engineering.