Data Warehouse & Lake Modernisation

Your SQL Server
Wasn't Built for This.

Years in Business
18 +
Customer Retention
97 %
Data Migrated for Clients
100 TB+
ISOCertified
27001

HST Solutions migrates legacy SQL Server, Oracle, and on-premises data warehouses to Snowflake, Databricks, and cloud data lakes for organisations across Ireland, the UK, and Europe. Proven with Waystone’s €1.3T+ AUM platform. ISO 27001 certified.

Why teams bring us in

Queries that took seconds now take hours. Reports miss deadlines.
Discovery phase never ends. Nothing ships.
SQL Server Enterprise isn't getting cheaper.
The person who built it left. Nobody knows the dependencies.

You don’t need another cloud readiness assessment.

You need workloads running in a modern data platform.

Who brings in a Managed Data Warehouse Engineer

regulated

Enterprises with ageing SQL Server data warehouses

Built 10+ years ago, performance degrading
person

CTOs facing SQL Server license renewals

Looking for cost reduction without rebuilding everything
trams

Fund administrators with regulatory reporting pressure

Systems can’t handle volume growth
companies

Teams with "Migration projects" stuck in planning

Need engineers who actually ship
sla

Organisations wanting to adopt Snowflake or Databricks

But lack internal expertise

What is Data Warehouse Modernisation?

Data warehouse modernisation is the process of migrating legacy on-premises data warehouses (typically SQL Server, Oracle, or Teradata) to modern cloud-native platforms like Snowflake, Databricks, Amazon Redshift, Azure Synapse, or Google BigQuery.

Modern cloud data warehouses offer virtually unlimited scale, pay-per-use pricing, separation of storage and compute, and native support for semi-structured data. They also integrate better with modern BI tools, data science workflows, and real-time streaming architectures.

HST provides senior data engineers who execute data warehouse migrations from assessment through cutover without the 18-month consulting timeline. We migrate incrementally, proving value before expanding scope.

WHAT YOU GET

Data Warehouse Pod

Senior Data Warehouse Engineer​

Project Manager

Architecture Reviews​

DevOps Assist​

SLA & Compliance

One monthly price. One embedded seat. A full bench behind it.

Migration Approaches

Lift & Shift (Fast)

01
database
Move existing warehouse to cloud equivalent (SQL Server → Azure SQL, SQL Server → RDS) with minimal changes. Fastest path to cloud, lowest risk, good for immediate license savings.

Re-Platform (Balanced)

02
datatbase_license_renewal
Migrate to cloud-native platform (SQL Server → Snowflake, Oracle → Databricks) with schema optimisation. Better long-term architecture, moderate effort.

Re-Architect (Comprehensive)

03
Search
Full redesign from warehouse to data lakehouse (dimensional model → medallion architecture). Best for organisations wanting to consolidate analytics, ML, and streaming on one platform.​

We recommend the approach that matches your timeline, budget, and technical goals — not the approach that generates the most consulting fees.

What We Migrate

Source Platforms

Target Platforms

Technology Stack

We don't force a platform. We recommend based on your existing ecosystem, use cases, and team skills.

Case Study

Waystone — SQL Server to AWS Data Lake

Global fund governance firm with €1.3T+ assets under management

12-Week Migration Programme

We deliver pilot workloads by week 6. You see value before committing to full migration.

Why companies choose HST over alternatives

Big 4 / ConsultanciesPlatform VendorsSolo Contractors
HST Icon HST
Migration experience
  • Generic consultants
  • Sell their platform
  • Variable
  • Migrated €1.3T+ fund admin production systems
Objectivity
  • Sell what they partner with
  • Only their product
  • Dashboard only
  • Platform agnostic we recommend what fits
Support structure
  • Account managers
  • Tier 1 support
  • Solo
  • Engineer + PM + Architecture
Speed
  • 8–12 weeks to start
  • Training + self-service
  • Depends / Available
  • 7–10 days
Accountability
  • Change requests
  • Not your migration
  • Walks away
  • SLAs, ISO 27001, IP assignment
Pricing
  • €500k+ projects
  • Platform + services
  • Hourly
  • €5–6k/month fixed

How We Work

Week 1

Embed

01
Search
Engineer joins your Slack/Teams, gets access, meets the team. PM establishes cadence.
Week 2

Assess

02
Search
Audit existing warehouse, document dependencies, identify quick wins, propose target architecture.
Week 3+

Migrate

03
Search
Workload-by-workload migration. Weekly demos. Parallel running for validation. Documentation as we go.
Cutover

Support

04
Search
Production cutover support, monitoring setup, knowledge transfer. Stay for stabilisation or hand off.

Pricing

Weekly demos, architecture reviews, SLAs, ISO 27001 certified, full IP assignment.

Proof that Reduces Risk

Years in Business
18 +
Projects Delivered
250 +
Customer Retention
97 %
Certified
ISO 27001
Certified
ISO 22301
Aligned
DORA
COMMON QUESTIONS

Frequently asked questions

Typical enterprise migrations take 3-6 months depending on complexity. Our 12-week programme delivers pilot workloads by week 6 and production cutover by week 12. Very large migrations (petabyte-scale, hundreds of dependencies) may take 6-12 months. We scope realistically no 18-month discovery phases.

It depends on your use cases. Snowflake excels at analytics, BI, and data sharing — it’s easier to manage and has excellent governance. Databricks excels at unified analytics plus machine learning — it’s more flexible but requires more engineering. If you’re pure analytics/BI, Snowflake. If you’re doing ML and want lakehouse architecture, Databricks. We help you decide based on your actual needs.

We convert SSIS packages to modern equivalents typically dbt for transformation logic and Airflow or ADF for orchestration. We don’t do a “lift and shift” of SSIS to the cloud (that just moves the problem). We convert incrementally, validating that outputs match before decommissioning old packages.

Yes. We always run parallel systems during transition. Old warehouse keeps running while we build and validate the new one. We only cutover when the new system is proven and stakeholders are confident. Regulatory deadlines don’t move — we don’t take risks with your production data.

Data quality validation is built into every migration. We create automated comparison checks between source and target, validate row counts, checksums, and business logic. If something doesn’t match, we investigate before proceeding. Migration is the perfect time to clean up data quality issues but we do it intentionally, not accidentally.

7–10 business days from signed agreement to engineer embedded in your team.

Give us 20 minutes. We'll show you a realistic migration plan.

FLEXIBLE ENGAGEMENT MODELS

Find The Perfect Solutions For Your Project

Managed Team

Your product, our dedicated team. From concept to conception, we handle it all.

Staff Augmentation

Need extra hands? Our experts seamlessly join your team, providing the skills you need, when you need them.

Fixed Cost

Upfront price, guaranteed delivery. Your project completed on time and within budget.

    EXPLORE MORE WAYS WE CAN HELP

    Need a Different Approach?

    Compare All Engagement Models

    What is 4 + 4?

    Certified Capability

    ISO 27001 Certified

    Data & AI, Azure

    Google Cloud Partner

    WHAT MAKES US STAND APART

    We Have Deep
    Technical & Industry Experience

    One Team, One Dream

    At HST, there is no such thing as not my problem.

    Build Trust with Every Interaction

    We’re accountable to our clients and to each other. which means being open even when things aren’t going smoothly.

    Improve Everything

    The world of software and business moves fast so we re always learning and honing our skills.

    Own It

    We are a team of doers and we take responsibility for the success of everything we do.

    Obsessed: Over Results

    We’re obsessed with driving business value for our clients and we know that starts with gaining a deep understanding of the problems they’re facing

    Proven Excellence

    Our word is our bond. With 250+ projects delivered on time and within budget, we’ve built a reputation for keeping every promise.

    Partners in Precision

    Financial services, insurance, healthcare, retail, media. Trust built where excellence is the only option.

    Who Are We ?

    Creativity, Efficiency, & Advanced AI

    Strategy

    We've got all the big ideas and creative talent of an ad agency or creative studio except we deliver working products, not expensive presentations.

    Engineering

    We develop lean, stable code using all the best practices of any leading dev shop, except we focus on the user experience so people actually like using what we build.

    Design

    We validate, design, and prototype proof-of-concepts like any "creative technology" studio, but we do it in less time and for less money.

    Co-paired AI

    Co-paired AI development ensures twice the efficiency at a lower cost. We prioritize your software for innovative, precise, scalable, and quality-assured applications.

    Strategy

    We've got all the big ideas and creative talent of an ad agency or creative studio except we deliver working products, not expensive presentations.

    Engineering

    We develop lean, stable code using all the best practices of any leading dev shop, except we focus on the user experience so people actually like using what we build.

    Design

    We validate, design, and prototype proof-of-concepts like any "creative technology" studio, but we do it in less time and for less money.

    Co-paired AI

    Co-paired AI development ensures twice the efficiency at a lower cost. We prioritize your software for innovative, precise, scalable, and quality-assured applications.

    Contact Us

    Tell us about your custom software project

    Let our team, be your team

    Get a technical conversation about your project — not a slide deck. Whether you need AI integration, a software engineering team, or a data platform, we’ll tell you honestly if we’re the right fit.

    Years in Business
    18 +
    Flawless Ratings
    5 .0
    Successful Projects
    250 +

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