DATA ENGINEERING AND BIG DATA
TALENT SOLUTIONS
Processing Big Data has become crucial to countless businesses. Those who decide to pursue a career within Big Data face complex development challenges, too tough for relational database systems. After all, there is no Data Science without Data Engineers.
Whilst businesses may have vast quantities of data at the ready, it holds no real value unless it can be stored, harnessed and utilised. It’s estimated that most UK companies have at least 100 terabytes of data stored which could be used for various purposes around the business, as well as newly accessible hard-to-process sources such as web data, image data, and social media data.
This is where those who work in Data Engineering become extremely valuable, as they develop Data Platforms that allow this kind of volume to be processed and used by Data Scientists and analysts across the business.


WHY
HARNHAM?
OUR
SERVICES
-
Permanent and Contract Recruitment: We offer both permanent and contract recruitment solutions, adapting flexibly to support the dynamic requirements of your Big Data and Data Engineering projects.
Â
-
Executive Search: Our executive search service focuses on identifying and securing top-tier leaders in the Data Engineering domain who can advance your strategic goals and technological advancements.
Â
-
Industry-Specific Expertise: Our operations span multiple industries, providing specialized recruitment solutions tailored to the distinctive challenges and opportunities of your sector.
Â
Contact us today to discover how our custom talent solutions can bolster your organization's Data Engineering prowess.

JOBS
LATEST
OPPORTUNITIES
Harnham are a specialist Data & AI recruitment business with teams that only focus on niche areas.

Founding Full-Stack Engineer
New York
$200000 - $300000
+ Data Engineering
PermanentNew York
To Apply for this Job Click Here
Founding Full-Stack Engineer (React + Rust)
AI Infrastructure – Open Source
$200,000 – $300,000 + Equity (~1%)
Onsite – Williamsburg, NYC
Join a deeply technical AI startup as a founding engineer, building the open-source infrastructure powering the future of LLM optimization. With world-class backers and a team of Stanford, Oxford, and CMU alumni, this is an opportunity to own critical product features from day one and help shape a category-defining developer platform.
THE COMPANY
This stealth-mode startup is building an open-source platform that helps teams optimize LLMs in production – think observability, inference routing, and programmatic evaluation in one powerful feedback loop. The company is backed by investors behind OpenAI, ClickHouse, and Anthropic, and has years of runway to support deep open-source investment.
THE ROLE
As Founding Full-Stack Engineer, you will:
- Lead the build of the observability dashboard and core user-facing tools
- Work in React and Rust to craft high-performance, developer-first experiences
- Collaborate directly with the CEO, CTO, and ML researchers to shape product and infrastructure
- Contribute open source code that impacts the broader LLM/devtools ecosystem
- Influence product direction and engineering culture as a true early team member
YOUR SKILLS & EXPERIENCE
- Strong technical foundation with experience driving 0→1 product builds
- Proficiency in React and Rust (must-have)
- Experience designing technical UIs for engineers/ML users
- Track record of OSS contributions or a strong GitHub presence is a plus
- Passionate about developer experience and the craft of software engineering
- Open to H1B or O1 transfer for exceptional candidates
BENEFITS
- $200K-$300K base + meaningful equity (~1%)
- Work alongside an all-technical founding team from Stanford, Oxford, CMU, AWS, and Meta
- Learn from leaders in OSS (Radix UI, RemixJS), Rust, and ML research (NeurIPS, Meta AI)
- Contribute to open-source every day
- Onsite collaboration in a top-tier Brooklyn workspace
To Apply for this Job Click Here

Founding Engineer
New York
$140000 - $180000
+ Data Engineering
PermanentNew York
To Apply for this Job Click Here
Found Engineer
AI Technology
New York, NY
$150,000 – $180,000 + Equity
We’re partnering with a fast-growing AI-native startup that’s revolutionizing hotel operations through automation. They are looking for a Technical Co Founder who can build their engineering team.
The Role:
This is an opportunity to be the first technical leader at a company solving massive, overlooked problems in hospitality. As the Founding Engineer, you’ll lead development across the stack and help bring AI-native workflows-from chatbots to pricing agents-to life. You’ll work directly with the CEO and founding team to architect scalable systems, own key business outcomes, and help define the product experience end-to-end.
Key Responsibilities:
- Build and scale the platform across the full stack (Python, Node, React, AWS)
- Implement agentic solutions using AI frameworks like LangChain and RAG pipelines
- Collaborate closely with the founding team to shape product and technical direction
- Manage and mentor engineers as the team scales
- Translate complex business needs into simple, reliable software that drives results
- Establish engineering best practices, timelines, and delivery standards
Skills and Experience:
- Strong experience in fullstack development using Python, Node.js, and React
- Entrepreneurial mindset-hungry, resourceful, and ready to own the outcome
- Proficiency in AWS and building production SaaS applications
- Exposure to AI/ML concepts, especially chatbots and retrieval-augmented generation
- Exceptional communication and collaboration skills
- Must be NYC-based or open to relocating for a hybrid culture
The Benefits:
As a Founding Engineer, you’ll receive a $150,000 – $180,000 salary plus a performance-based bonus, along with equity. You’ll also help shape the future of a company with massive upside, clear product-market fit, and a team ready to move fast.
Keywords
Founding Engineer, Fullstack, Python, React, Node, AI, LangChain, SaaS, Hospitality Tech, NYC, Startup, Agentic Workflows, Dynamic Pricing, Technical Co-Founder
To Apply for this Job Click Here

Senior Data Scientist / Engineer
Paris
€45000 - €60000
+ Data Engineering
PermanentParis, ÃŽle-de-France
To Apply for this Job Click Here
SENIOR DATA SCIENTIST / ENGINEER
UP TO 60K€ PACKAGE
2-3 JOURS DE TÉLÉTRAVAIL
Python – SQL – Pyspark – AWS – Tableau
Une startup parisienne dans le domaine de la santé recherche un Senior Data Scientist / Engineer expérimenté. Si l’environnement startup vous intéresse, alors cette offre est faite pour vous !
LE POSTE
Rattaché au Head of Data, vous rejoindrez l’équipe data composée de deux personnes. Vous serez en charge de l’extraction, la collecte et l’interprétation des données à fort enjeux business. Vos missions au quotidien :
- Collecter, centraliser et organiser les données s’assurant de leur qualité et leur disponibilité
- Détecter et corriger les données erronées, doublons ou incohérences, tout en garantissant un entrepôt de données bien structuré
- Améliorer occasionnellement des pipelines de données, concevoir des algorithmes d’analyse et des modèles prédictifs fiables, créer des POC sur des sujets IA
- Créer des dashboards, rapports et visualisations claires pour aider les équipes métier à exploiter les données
- Suivre les innovations data, proposer de nouvelles approches/outils pour améliorer les pratiques du pôle data
VOTRE PROFIL
- Bac+5 au sein d’une top 10 école d’ingénieur en mathématiques, statistiques ou data science
- Minimum 3 ans expérience sur un poste similaire au sein d’une startup/scaleup
- Expérience solide avec Python, SQL, Pyspark
- Maîtrise d’un cloud public (AWS, GCP ou Azure)
- Vous êtes autonome, bon communicant et aimez le travail d’équipe
POUR POSTULER
Merci de joindre votre cv à jour et nous reviendrons vers vous rapidement.
To Apply for this Job Click Here

Platform Support Engineer
London
£40000 - £45000
+ Data Engineering
PermanentLondon
To Apply for this Job Click Here
Role: Platform Support Engineer
Salary: £45,000
WFH: Hybrid – 2-3 days/week in Central London office
Overview
Our client is a fast-growing, outcome-led financial technology company helping individuals build a better relationship with their money. As part of a mission to deliver a world-class wealth platform, they’re hiring a Platform Support Engineer to bolster internal operations and enhance infrastructure reliability across their growing team.
Sitting within a technically diverse and highly collaborative Platform Team, you’ll play a key role in supporting end-users, maintaining core systems (AWS, Google Workspace, MDM), and driving hands-on infrastructure projects from start to finish. The role blends operations, project ownership, and platform optimisation in a modern, Mac-first, cloud-native environment.
Key Responsibilities
- Manage internal support tickets via Jira and provide high-quality end-user support
- Administer Google Workspace and support Mac, Windows, and Linux devices using MDM tools
- Support operational changes and handovers from Platform Engineering
- Own technical projects end-to-end, from scoping through to delivery
- Assist with infrastructure support and occasional patching of office systems
Ideal Candidate
- Solid experience with Linux system administration and command-line navigation
- Proficient with Google Workspace configuration and support
- Strong understanding of basic networking and connectivity troubleshooting
- Experience working with ticketing systems like Jira and documentation tools like Confluence
- Comfortable owning and delivering infrastructure and platform-focused projects
- Excellent communication skills and a user-first mindset
Nice to Haves
- Experience with Docker or containerisation workflows
- Exposure to managing larger or more complex Linux environments
- Familiarity with network administration or office infrastructure management
Tech Stack / Tools
- Linux (macOS, Windows also supported)
- Google Workspace
- MDM Tools
- Jira / Confluence
Benefits
- Outcome-led, flexible culture with true work-life balance
- 25 days holiday + flexible hours for life admin (no leave needed for appointments)
- Regular team socials and a friendly, inclusive environment
- Hybrid working model (2-3 days/week in the office)
- Mental and physical wellbeing perks (online fitness, discounted gyms)
- Salary sacrifice scheme to support your financial future
- Family-friendly policies and flexible support for parents
Interview Process
- Intro Chat – With team member(s) for culture and alignment
- Technical Interview – Problem-solving and platform knowledge
- Final Interview – Meet with wider team members on-site or virtually
To Apply for this Job Click Here

Azure Cloud Engineer
€45000 - €55000
+ Data Engineering
PermanentHauts-de-Seine, ÃŽle-de-France
To Apply for this Job Click Here
AZURE CLOUD ENGINEER (MCO)
IDF – 2 jours de télétravail
UP TO 55K€ FIXES + 2K variable
Azure – Kubernetes – Terraform
L’ENTREPRISE
C’est une entreprise du retail qui développe des solutions innovantes. Dans un contexte de forte croissance, l’entreprise recherche un expert sur Azure pour assurer la maintenance en condition opérationnelle de ses outils devops.
LE POSTE
Rattaché directement au Manager Devops et au sein d’une équipe de 5 personnes, vous aurez un rôle à 80% maintien des outils et 20% de taches Devops :
- Gérer les incidents et les SLA/SLO
- Analyser et lire des logs
- Suivre les tableaux de bord et les alertes.
- Automatiser et exécuter les processus de Build et de déploiement
- Identifier et répondre aux incidents de production et piloter l’analyse des root causes et les mesures correctives.
- Surveiller et prendre en charge de manière proactive la plateforme de l’entreprise
- Définir et mettre en Å“uvre des solutions de contournement et des mesures d’atténuation.
- Assurer la distribution, les performances et l’évolutivité de la plateforme.
- Vérifier les livraisons, les déployer dans un environnement de préparation et assurez la qualité
- Mettre en œuvre des améliorations, par exemple via des scripts ou des outils disponibles.
LE PROFIL
- Master ou équivalent en informatique
- Minimum 2 ans d’expérience dans l’utilisation de Linux, avec une expérience en automatisation et déploiement
- Connaissance obligatoire de Kubernetes et de Terraform
- Excellente maîtrise technique d’Azure ARM, PowerShell
- Des certifications Azure sont un atout
- Niveau d’anglais B2 requis
POSTULER
Merci de joindre votre cv à jour et je vous recontacterai dès que possible.
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.
-
Use SQL and Python (Pandas) to transform and load data into analytics environments.
-
Conduct thorough quality checks, spotting inconsistencies or issues proactively.
-
Support senior consultants by ensuring data is ready for robust comparative analysis and final reporting.
Why This Role Stands Out
-
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.
-
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.
-
Requires expert-level SQL and Python (Pandas) skills to handle hundreds of millions to billions of rows across diverse data sources.
Key Requirements
-
3-5 years’ data-focused experience in professional services or consulting environments.
-
Proven track record in a Big Four or similar consultancy, delivering on complex, high-pressure projects.
-
Advanced SQL for building, optimising and troubleshooting queries on very large static datasets.
-
Expert Python scripting, with deep use of Pandas for data manipulation.
-
Strong experience handling multiple data formats: Oracle databases, text files, XML.
-
UK-based, with flexibility for occasional days in the London office.
Desirable
-
Experience with financial crime, regulatory or other forensic investigations.
-
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
-
Develop and maintain ETL pipelines, including manual and semi-manual data loads
-
Connect and integrate diverse data sources across cloud platforms
-
Collaborate with analytics and design teams to create bespoke, scalable data solutions
-
Support data migration efforts from Azure to Databricks
-
Use Terraform to manage and deploy cloud infrastructure
-
Build robust data workflows in Python (e.g., pandas, PySpark)
-
Ensure the platform is scalable, efficient, and ready for future AI use cases
REQUIRED SKILLS & EXPERIENCE
-
Strong experience with Azure and Databricks environments
-
Advanced Python skills for data engineering (pandas, PySpark)
-
Proficiency in designing and maintaining ETL pipelines
-
Experience with Terraform for infrastructure automation
-
Track record of working on cloud migration projects, especially Azure to Databricks
-
Comfortable working onsite in London 2 days/week and engaging cross-functionally
-
Strong communication and problem-solving abilities
NICE TO HAVES
-
Experience with Qlik or other data visualisation tools
-
Exposure to AI product integration or readiness projects
To Apply for this Job Click Here

Platform Support Engineer
London
£45000 - £50000
+ Data Engineering
PermanentLondon
To Apply for this Job Click Here
PLATFORM SUPPORT ENGINEER
CENTRAL LONDON – 2 DAYS PER WEEK IN OFFICE
£45,000 – £50,000 + BENEFITS
Are you a highly motivated and curious individual with a passion for systems administration and a drive to learn and grow within a cutting-edge environment? This is a unique opportunity to join a well-funded and innovative firm that’s reshaping how individuals manage their financial insights.
THE COMPANY:
This company specialises in providing sophisticated financial insight, aggregating vast amounts of data to offer a holistic view across various financial profiles. They help clients understand their life goals and provide actionable insights to help them achieve those ambitions.
Having secured significant later-stage venture capital funding, they manage substantial assets for hundreds of clients. The founders bring diverse expertise from finance and technology, ensuring a company with strong financial backing and a clear vision.
THE ROLE:
You’ll be a crucial part of the engineering team, reporting directly to the Technical Team Lead and working alongside another Platform Support Engineer. This is a fantastic opportunity to gain broad exposure and develop your skills within a sophisticated platform environment.
This role is about being a versatile – someone who loves technology and is eager to jump in and support various aspects of their robust platform. Your primary responsibility will be to provide 1st, 2nd, and 3rd line support, mainly assisting the core Platform Engineering team. This will involve significant system administration work. They are keen to find someone with a passion for the field, perhaps demonstrated through personal projects or a home lab, rather than extensive professional experience.
YOUR SKILLS AND EXPERIENCE:
The ideal candidate will have strong communication skills and a curious, proactive personality. They don’t require specific professional experience in a similar role, as passion and potential are key.
- System Administration skills and a keen interest in this area.
- Linux & Network administration knowledge.
- A “self-starter” mentality with a strong passion for technology.
BENEFITS:
- Company bonus scheme.
- Generous holiday allowance (starting at 25 days, increasing to 30).
- Enhanced pension.
- Potential for equity review after probation (not guaranteed).
HOW TO APPLY:
Please send your CV via the Apply link on this page.
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:
-
Wrangle, format, and organize large financial data sets for reporting and analysis
-
Develop and maintain Python scripts (using pandas) for forensic data processing
-
Write and optimize SQL (T-SQL and Oracle) for data extraction and validation
-
Perform comparative and lineage analysis to identify data inconsistencies
-
Initially able to work onsite regularly with flexibility, particularly during early stages of the contract
KEY SKILLS & REQUIREMENTS
-
3-5 years minimum in data engineering or forensic analytics
-
Very strong SQL skills, including T-SQL and Oracle
-
Proficient in Python scripting with pandas
-
Experience working with large financial data sets and complex formats
-
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
-
Comfortable working in on-premise environments
-
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.
To Apply for this Job Click Here

CAN’T FIND THE RIGHT OPPORTUNITY?
GET IN TOUCH
today
If you can’t see what you’re looking for right now, send us your CV anyway – we’re always getting fresh new roles through the door.
Industry Hub
HARNHAM
News & Blog
With over 10 years experience working solely in the Data & AI sector our consultants are able to offer detailed insights into the industry.
Visit our Blogs & News portal or check out our recent posts below.
Download ‘How to Hire in AI’: Our AI Hiring How-to Guide
In a landscape dominated by discussion of AI, companies can find it hard to navigate the marketplace….
The Role of Data Governance in AI: Landscape in the Netherlands
By Ross Henderson & Robin Buitendijk, Harnham Netherlands The transformative power of technology has entered an exciting…
The Practical Power of Generative AI in Business
By Miguel Sanchez, Data Coach at Rockborne AI is everywhere, true, but how do businesses move beyond…
AI Contracting Jobs Are Everywhere—So Where Are the Contractors?
by Jose Gomez, Manager of Contract Recruitment AI jobs are everywhere, so why are companies struggling to…
AI in 2025 – The Effect On the Job Market
By Thomas Savidge The UK is positioned to become a major leader in AI, driven by an…
The Importance of Market Mix Modelling from a Recruitment Perspective
At Harnham, we’ve witnessed a significant rise in demand for talent in the Market Mix Modelling (MMM)…
Predictions for AI in 2025: The Big, the Bold, and the Inevitable Shifts Ahead
2024 was a landmark year for artificial intelligence (AI), with generative AI moving from novelty to necessity….
Budget 2024: What It Means for Data & AI Jobs in 2025
The Autumn Budget 2024 places digital transformation and innovation at the core of the UK’s economic strategy,…
Important Statement Regarding Unaffiliated Company Claims
We have been made aware of claims of Harnham and Rockborne’s association with a company called Scrutinex….
Préparer Son Entretien de la Meilleure des Manières (FR)
Un recruteur qui parle de préparation d’entretien ? Oui, encore un discours sur l’importance de se préparer,…
Testimonials
Client and
candidate
testimonials
A trusted partner of professionals
across the globe.
We understand the challenges our
customers face and offer the
recruitment solutions needed to drive
business success through Data &
AI.