Power BITableauScheduled reportsEmail alertsAPI exports
Technology we specialise in
Our core tooling
We go deep on these. Not broad and shallow across everything.
Azure Synapse
Warehouse
Snowflake
Warehouse
dbt
Transformation
Azure Data Factory
Ingestion
Azure Blob Storage
Storage
Fivetran
Connectors
Power BI
Visualisation
Tableau
Visualisation
BigQuery
Warehouse
Service offerings
Everything under one roof
Data warehouse implementation
Architecture, schema design, modelling and governance — built from scratch, not from a template.
Data integration & pipelines
ADF, Fivetran or custom ETL — automated pipelines that keep your warehouse current.
Power BI development
Semantic models, DAX, RLS and full Power BI Service deployment.
Tableau development
Live warehouse connections, LOD calculations and Tableau Server or Cloud deployment.
Fractional data team
Monthly retained support — dashboards, pipelines, data quality and advisory.
Build your data team
Design, hire, onboard — then hand over a fully documented platform your team owns.
BI tools in depth
Power BI & Tableau — both, done properly
Production dashboards used by leadership teams every day.
Power BI — Microsoft-native BI
Integrated with Microsoft 365, Azure and Dynamics. We build semantic models, configure RLS and deploy to the Power BI Service.
DAX measures & calculated columns
DirectQuery & Import mode
Row-level security (RLS)
Paginated reports for finance
Power BI Premium & Embedded
Automated refresh via gateway
Sales performanceLive
Revenue
£4.2M
↑ 12%
Deals
142
↑ 18
Win rate
34%
↑ 5pts
Revenue by month
Tableau — best-in-class visualisation
When stakeholders need to explore, Tableau is our tool. Live warehouse connections, Tableau Server or Cloud deployment.
Live & extract connections to your warehouse
LOD expressions (FIXED, INCLUDE, EXCLUDE)
Tableau Prep for upstream data shaping
Tableau Server & Tableau Cloud deployment
Embedded analytics in your applications
Geospatial & map-based visualisations
Regional performanceLive
Regions
6
Active
Top region
London
↑ 22%
Coverage
94%
Target met
London & SE — 50%
Midlands — 20%
Other regions — 30%
How we work
A proven delivery framework
01
Discover
We assess your systems and objectives to understand where the value is.
02
Design
Warehouse schema, pipeline architecture and tooling choices — tailored, not templated.
03
Build
Warehouse, pipelines, dbt models and dashboards — tested and documented.
04
Support
Ongoing maintenance, dashboards and advisory as your platform grows.
About Dataleks
Helping businesses unlock the full value of their data
Dataleks was founded on a simple belief: better decisions start with better data. We build modern data warehouses for mid-market businesses that have outgrown spreadsheets but don't have a 50-person data department.
We work across the full stack — schema design, dbt models, ADF pipelines, Snowflake or Azure Synapse, Power BI and Tableau. Small team, senior people, real ownership.
50+
Data warehouse projects delivered
8
Industries served across the UK
100%
Client retention on ongoing contracts
3 days
Average reporting time saved per client
The team
Senior people, not juniors with a template
Update these with your real names and bios.
DL
Founder & Lead Consultant
Data Architecture & BI
10+ years building data platforms. Specialist in Azure, Snowflake and Power BI.
DE
Data Engineer
Pipelines & Transformation
Specialist in dbt, Fivetran and Azure Data Factory.
BA
BI Developer
Power BI & Tableau
Certified in Power BI and Tableau. Builds dashboards people actually use.
Common questions
Things people ask us
Most initial builds take 6–12 weeks depending on the number of source systems and reporting requirements. We'll give you a realistic timeline in the discovery phase — not an optimistic one to win the work.
No — data quality issues are part of what we diagnose and fix. Most clients come with messy data. We'd rather see the reality early than have you waste time tidying it up first.
Yes, frequently. We can audit what's there, keep what works and rebuild the rest on a proper foundation — including migrating to dbt or a cloud warehouse.
Primarily Azure (Synapse, ADF, Blob Storage, Azure SQL), Snowflake and BigQuery. We'll recommend the right platform based on your existing stack and data volume.
Yes — this is one of our specialisms. We design the team structure, help you hire the right people, get them productive and document everything so your team owns the platform long-term.
Book a free 30-minute consultation via the Contact page. We'll talk through your situation and come back with a realistic proposal within a week.
Data training & education
Launch your career in data — properly
We teach SQL, Tableau and the data engineering process. Practical, hands-on, taught by practitioners.
200+
Students trained
85%
Job placement rate
4.9/5
Average student rating
SQL · Tableau · Engineering
Core subjects taught
Training programmes
Choose your path
Beginner
Data foundations bootcamp
Perfect if you're completely new to data. No prior experience needed — just curiosity and commitment.
SQL from scratch to advanced queries
Introduction to data modelling
Tableau — connecting, visualising, dashboards
How data warehouses work
Hands-on project using real data
8 weeks · Part-time evenings & weekends
Career switcher
Data engineering accelerator
For professionals switching into data engineering. Intensive, practical, job-focused. You'll build a real warehouse end-to-end.
Snowflake & Azure Synapse in depth
dbt — models, tests, documentation
Azure Data Factory & Fivetran pipelines
Azure Blob Storage & Data Lake
Star schema & dimensional modelling
CV review & interview preparation
12 weeks · Full-time or part-time options
Advanced
BI & analytics mastery
For analysts who want to go deeper — advanced Tableau, analytical SQL and understanding the full data engineering process.
Advanced Tableau — LOD, calculated fields, Prep
Window functions & analytical SQL
The data engineering process end-to-end
dbt — models, tests and documentation
Dashboard design & data storytelling
8 weeks · Part-time evenings
After you finish
What you'll walk away with
Solid SQL skills
From writing your first SELECT to joins, window functions and query optimisation — you'll be comfortable with SQL in a real working environment.
Tableau proficiency
You'll know how to connect to data, build meaningful visualisations, and create dashboards that actually communicate something useful.
Data engineering foundations
How data warehouses are structured, how data moves through pipelines, and how tools like dbt and ADF fit into a modern data stack.
A real project to show
You'll have worked through a hands-on project — not theory exercises — that you can walk through confidently in an interview.
What students say
Hear from our students
"I went from working in customer service to landing a junior data engineer role in 4 months. The dbt and Snowflake content was genuinely employer-level — not watered down."
JK
James K.
Junior Data Engineer, London
"I was a Business Analyst looking to move into a more technical role. The programme gave me the hands-on data engineering skills I needed to make that step to Technical BA."
SR
Sonia R.
Technical Business Analyst, Manchester
"The project work was what set me apart in interviews. I had something real to talk through — not just theory. Had 3 offers within 6 weeks of finishing."
MT
Marcus T.
Data Analyst, Birmingham
Apply now
Start your data career
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