Data & AI engineering consultancy · London

Data platforms and AI systems you can prove are right.

We design, build and migrate the data and machine-learning platforms that financial services and other regulated businesses run on — and hand them over with the evidence that every number reconciles.

Engineering delivered for
  • CIBC Capital Markets
  • Marshall Wace
  • Barclays
  • NHS Property Services
What we do

Two practices, one standard of engineering.

From the pipelines that land your data to the models and agents that act on it, we build systems that hold up under audit, scale and change.

Data platform engineering

Modern data platforms on Snowflake and Databricks — designed for the volume, auditability and change control that regulated businesses need.

  • Greenfield platform builds and legacy platform migrations
  • Batch, streaming and event-driven ingestion
  • Analytics engineering and data modelling with dbt
  • Data quality frameworks and reconciliation
  • CI/CD and infrastructure as code for data
SnowflakeDatabricksdbtSparkAirflowTerraformAWSAzureGCP

AI & agentic automation

Machine learning and AI that runs in production, not in a notebook — and agents that take real work off your teams’ plates.

  • ML platform migrations and MLOps pipelines
  • Retrieval-augmented generation over company knowledge
  • AI agents that automate back-office and finance operations
  • LLM integration, evaluation and monitoring
  • Document ingestion and processing at scale
Vertex AIKubeflowLangChainClaudeGeminiPython
How we work

Built to be trusted, not just shipped.

Thirteen years of delivery in banks, hedge funds and the public sector taught us that the hard part of data work isn’t building the pipeline — it’s proving it’s right.

01

Proven, not assumed

Every migration ships with automated reconciliation against the system it replaces. Differences are traced to a named cause — never waved through as noise.

02

Senior engineers, hands on

The people who scope your project are the people who build it. No hand-off to a junior bench, no learning on your budget.

03

Faster and cheaper to run

Run time and compute cost are requirements, not afterthoughts. Rebuilt pipelines routinely run in a fraction of their legacy time.

04

Yours on day one

Tests, documentation and runbooks come as standard, so your team owns the platform the moment we step back.

Phase 1

Discover

Map the data, the systems and the decisions that depend on them. Agree what “correct” means before anything is built.

Phase 2

Architect

A target design sized to your team and budget — pragmatic choices over fashionable ones.

Phase 3

Build in slices

Working increments in production early, each with tests and data-quality assertions from the first commit.

Phase 4

Reconcile & hand over

Parity evidence against the legacy output, then documentation and a clean handover to your team.

Selected work

Where the numbers have to be right.

A selection of engagements we can talk about. Much of our work sits behind confidentiality agreements — we’re happy to discuss relevant experience in more detail on a call.

Marshall Wace

A regulatory-grade performance reporting engine

Led the build of the return, risk and exposure engine behind monthly investor reporting — from greenfield to production — replacing a decade-old system that had survived several failed rewrites. Position data modelled with full derivative look-through across hundreds of billions of rows.

OutcomeMonthly numbers released without per-fund manual sign-off, backed by a reconciliation strategy owned by Risk and Fund Accounting.

CIBC Capital Markets

Event-driven trade and risk data platform

Streaming ingestion on Databricks for high-volume trade and risk feeds — metadata-driven, schema-evolving and built to absorb thousands of files per trigger — feeding a dbt risk layer on a medallion architecture.

OutcomeDownstream validation rules encoded as automated tests, so outbound submissions passed receiving systems’ gates first time.

NHS Property Services

Finance reporting moved to the cloud

Migrated on-premise business data to Azure through fault-tolerant pipelines, and replaced a legacy finance reporting solution with a cloud data warehouse.

OutcomeLess manual reconciliation and more accurate monthly finance reporting across an estate covering around 10% of the NHS.

Sectors we know well Capital marketsAsset managementBankingInsurance & retirementRetailPublic sector
Contact

Got a data problem worth solving?

Tell us about the platform, the migration or the process you want automated. We’ll come back within two working days with honest thoughts on whether — and how — we can help.

Or email us directly contact@nephorium.com

We only use your details to reply. Privacy notice.