

Tact
Senior Data Engineer (Outside IR35)
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Data Engineer (Outside IR35) with a 3-month contract, based in London Bridge, offering a 4-day workweek. Key skills required include Python, AWS, Dagster/Airflow, Terraform, and PostgreSQL, with experience in Data Lakehouse architecture preferred.
🌎 - Country
United Kingdom
💱 - Currency
£ GBP
-
💰 - Day rate
Unknown
-
🗓️ - Date
August 7, 2026
🕒 - Duration
3 to 6 months
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🏝️ - Location
Unknown
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📄 - Contract
Outside IR35
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🔒 - Security
Unknown
-
📍 - Location detailed
London Area, United Kingdom
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🧠 - Skills detailed
#FastAPI #Data Science #Data Lake #Data Lakehouse #Python #Terraform #Langchain #Delta Lake #AI (Artificial Intelligence) #Security #Data Engineering #PostgreSQL #Airflow #MLflow #AWS (Amazon Web Services)
Role description
Senior Data Engineer | Outside IR35 Contract | London Bridge / 4-day working week contract / 3-month contract with a strong chance of extension.
I honestly can't remember the last time I saw 4-day working week contract outside contract. You'll always have Friday off! The dream...
If you've been contracting for a while, you'll know how rare a setup like this is.
Why is this contract needed?
The business is scaling quickly following continued growth and demand from enterprise FTSE 500 customers, so they're investing heavily in their AI and data platform.
They're looking for an experienced Senior Data Engineer to help build the next generation of their data infrastructure, working directly alongside the Head of Data and Lead Data Scientist. You'll help shape the architecture before building production-grade solutions, with genuine ownership from day one.
You'll get to work with all the latest tech on a greenfield project.
The role:
You'll be designing and building the data platform that powers enterprise AI applications.
You'll need experience with:
• Python
• AWS
• Dagster or Airflow
• Terraform
• PostgreSQL
• Data Lakehouse architecture
• Parquet / Delta Lake
• Security-first engineering
Experience with RAG pipelines, LangChain, Google ADK, pgvector, FastAPI, MLflow, AWS EKS or SOC2/ISO27001 environments would be a HUGE bonus.
Why would you want this contract?
• Genuine 4-day working week (Monday-Thursday, Friday off.)
• Outside IR35
• Initial 3-month contract with a strong chance of extension - project expected to last ~6+ months
• High-ownership engineering role
• Work directly with senior AI and Data leaders
• Influence architecture as well as implementation
• Working with all the latest tech
Senior Data Engineer | Outside IR35 Contract | London Bridge / 4-day working week contract / 3-month contract with a strong chance of extension.
I honestly can't remember the last time I saw 4-day working week contract outside contract. You'll always have Friday off! The dream...
If you've been contracting for a while, you'll know how rare a setup like this is.
Why is this contract needed?
The business is scaling quickly following continued growth and demand from enterprise FTSE 500 customers, so they're investing heavily in their AI and data platform.
They're looking for an experienced Senior Data Engineer to help build the next generation of their data infrastructure, working directly alongside the Head of Data and Lead Data Scientist. You'll help shape the architecture before building production-grade solutions, with genuine ownership from day one.
You'll get to work with all the latest tech on a greenfield project.
The role:
You'll be designing and building the data platform that powers enterprise AI applications.
You'll need experience with:
• Python
• AWS
• Dagster or Airflow
• Terraform
• PostgreSQL
• Data Lakehouse architecture
• Parquet / Delta Lake
• Security-first engineering
Experience with RAG pipelines, LangChain, Google ADK, pgvector, FastAPI, MLflow, AWS EKS or SOC2/ISO27001 environments would be a HUGE bonus.
Why would you want this contract?
• Genuine 4-day working week (Monday-Thursday, Friday off.)
• Outside IR35
• Initial 3-month contract with a strong chance of extension - project expected to last ~6+ months
• High-ownership engineering role
• Work directly with senior AI and Data leaders
• Influence architecture as well as implementation
• Working with all the latest tech






