ETL Development

ETL development services built for change data capture, not the happy path

BinaryBrill provides ETL development services that get data out of your source systems, reshape it and land it somewhere reliable — into Snowflake, another warehouse, or wherever it needs to go next. As a data pipeline development company, we build for change data capture, schema drift and late-arriving records with in-house senior engineers, because that is where most pipelines actually fail.

A senior engineer replies within 24 hours — not a sales rep.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

Why ETL pipelines break in production, not in testing

The nightly full reload takes longer than the night

The pipeline was built when the table had a hundred thousand rows and a full reload took ten minutes. It now has forty million rows, the reload takes six hours, and it occasionally still hasn't finished when the first analyst opens their laptop. Nobody built incremental extraction because full reload was simpler at the time, and now it's load-bearing infrastructure nobody wants to touch.

A source system renamed a column and the job failed silently

An upstream API added a field, renamed another, and changed a data type without telling anyone. The pipeline either crashed with an error nobody read until Friday, or worse, kept running and quietly dropped the changed column. Schema drift is not an edge case in a system you don't control — it's a certainty, and most pipelines have no plan for it.

One monolithic script does everything, and everything fails together

Extraction, transformation and load are one long script with no clear boundaries between stages. When step four of nine fails, there's no way to retry just that step — the whole thing reruns from the top, or someone edits the script by hand to skip ahead. There's no per-task alerting, so the first sign of trouble is a downstream report looking wrong.

Bad records go in, and nobody finds out until a customer does

A record arrives with a null in a field that should never be null, or a value outside any sane range, and it flows straight through into the warehouse because nothing checked it on the way. There's no rejected-records store an analyst can look at, so the first person to notice is whoever built the report that came out wrong.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

What ETL development services should cover beyond the transformation logic

The transformation logic is rarely the hard part. Change data capture, orchestration, schema drift and data quality are where pipelines actually earn or lose your trust, and that's where we put the engineering effort.

Incremental extraction as the default, not the exception

Change data capture — via database log reading, timestamp cursors or API delta endpoints, whichever the source supports — means pipelines move what changed rather than reprocessing the whole table on a timer. Load windows shrink from hours to minutes, and source systems stop taking the full weight of a nightly extract they were never sized for.

Orchestrated dependency graphs, not one long script

Each extraction, transformation and load step is a task in a dependency graph with its own retries and its own alert. When one task fails, only that task and what depends on it reruns — backfilling a single bad day is a documented operation, not a full pipeline replay with fingers crossed.

Schema drift handled, not just hoped against

An unexpected column, type change or renamed field gets quarantined and flagged rather than crashing the run or silently dropping data. Someone gets a clear alert naming exactly what changed, and the rest of the load — the part that wasn't affected — keeps moving.

Data quality checked at every stage, with a place to look

Row counts, null checks, range assertions and referential checks run at each stage, and anything that fails lands in a rejected-records store an analyst can actually query — not a log file nobody opens. Bad data gets caught before it reaches a dashboard, not after someone screenshots it.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

What this covers

Pick the piece you need, or bring us the problem and we'll tell you which applies.

Change Data Capture Pipeline Development

Incremental extraction built on log-based CDC, timestamp cursors or delta APIs depending on what each source supports, so nightly full reloads stop being the only option and source systems stop carrying load they were never designed for.

  • Incremental extraction with change data capture, so nightly full reloads stop being the only option
  • Log-based CDC where the source database supports it, with fallback patterns where it doesn't
  • Load windows sized to actual data movement instead of total table volume

Custom ETL Solutions & Pipeline Architecture

Custom ETL solutions for sources that don't fit an off-the-shelf connector — a legacy system with an undocumented export format, an internal API with unusual pagination, or transformation logic specific to how your business defines a metric.

  • Orchestrated dependency graphs with retries, backfills and per-task alerting instead of one monolithic scheduled script
  • Custom connectors for sources no off-the-shelf tool covers cleanly
  • Backfill and reprocessing designed as a documented operation, not an emergency script

Schema Drift & Data Quality Engineering

The defensive layer that keeps a source system's unannounced changes from corrupting your data — quarantining unexpected schema changes and asserting data quality at each stage rather than trusting the happy path.

  • Schema-drift handling that quarantines unexpected changes rather than failing the whole run
  • Data quality assertions at each stage, with a rejected-records store an analyst can actually inspect
  • Row-count, null and referential checks wired to alerts a human will actually see

Data Integration & ETL Consulting Services

For teams with pipelines already running, ETL consulting services that review what exists, diagnose why loads are slow, fragile or untrusted, and give an honest recommendation on what to fix versus what to rebuild.

  • Pipeline and orchestration audits that identify the specific stage causing failures or delay
  • Migration planning from legacy ETL tools or hand-written scripts to a maintainable orchestrated setup
  • Honest build-versus-buy guidance on managed connectors versus custom pipeline code

Warehouse & Lakehouse Loading

The final leg of the pipeline — loading transformed data into its destination, whether that's Snowflake, another cloud warehouse, or a data lake, with idempotent writes so a rerun after a failure never double-counts a load.

  • Idempotent loading patterns so a rerun after a failure doesn't duplicate or double-count data
  • Destination-specific tuning for warehouses including Snowflake, BigQuery, Redshift and Synapse
  • Loading designed against the destination's actual concurrency and compute model, not a generic pattern

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

The stack we build on

Chosen to fit the problem — not because it's what we used last time.

Orchestration & transformation

  • Apache Airflow
  • dbt
  • Azure Data Factory
  • Dagster
  • SSIS

Ingestion & change data capture

  • Fivetran
  • Debezium
  • Apache Kafka
  • Airbyte
  • AWS DMS

Destinations

  • Snowflake
  • Amazon Redshift
  • Google BigQuery
  • Azure Synapse Analytics
  • PostgreSQL

Engineering & quality

  • Python
  • SQL
  • Great Expectations
  • Docker
  • GitHub Actions
  • Grafana

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

How we'll work together

Every stage ends with something in your hands — not a status update.

  1. 01

    Source and change-pattern audit

    We catalogue every source system feeding the pipeline, check what each one actually supports for change detection — log-based CDC, timestamp columns, delta APIs, or nothing usable at all — and profile the data for the drift and quality issues already lurking in it.

    You get: A source inventory documenting each system's change-capture options, current data quality issues found, and a recommended extraction pattern per source.

  2. 02

    Design the pipeline and dependency graph

    We map extraction, transformation and load into discrete tasks with explicit dependencies, retries and alerting, and design the schema-drift and rejected-records handling before writing the transformation logic itself.

    You get: A documented pipeline architecture covering task boundaries, orchestration schedule, alerting rules and the data quality checks at each stage.

  3. 03

    Build and deliberately break it

    Pipelines are built incrementally with tests alongside each stage. Before anything goes live, we deliberately fail a task mid-run and feed it a renamed column to confirm recovery, alerting and quarantine behaviour work the way they're supposed to.

    You get: Version-controlled pipeline code in your repository, a test suite, and a demonstrated recovery run against an induced failure.

  4. 04

    Parallel run and handover

    The new pipeline runs alongside any existing process so outputs can be compared on live data before the old one is retired. We hand over with a working session covering backfills, alerting and how to add the next source.

    You get: A reconciliation log from the parallel run, pipeline documentation, and a working session with your team.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

Where we've applied this

Retail & e-commerce

Order, inventory and marketing platform feeds unified through incremental extraction, so a flash-sale spike in order volume doesn't mean a longer wait for the next data refresh.

Logistics

High-frequency telemetry and consignment events captured through change data capture rather than repeated polling, keeping source system load predictable at any shipment volume.

Finance

Transaction and ledger feeds with strict data quality assertions at every stage, and a rejected-records store that keeps a discrepancy visible rather than silently reconciled away.

Healthcare

Scheduling, billing and clinical system extracts with schema-drift handling that protects against silent breakage when a vendor pushes an update to a system you don't control.

SaaS platforms

Product usage events and subscription billing data joined through pipelines that handle late-arriving events without corrupting a day that already looked complete.

Manufacturing

Sensor and production system feeds landed through orchestrated pipelines with per-task alerting, so a single failed extract from one line doesn't stall the whole plant's reporting.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

Questions buyers ask us

Is your ETL development platform-agnostic, or do we need to be on Snowflake?

Platform-agnostic. The pipelines we build extract from your source systems and can land the result in Snowflake, another cloud warehouse like BigQuery or Redshift, an on-premise database, or a data lake — whichever is your actual destination. Snowflake is one destination we work with often, not a requirement. If you're also evaluating a Snowflake build, that's a related but separate piece of work we cover under our Snowflake development services.

Use a managed connector wherever one exists and covers your source well — it's cheaper and faster, and we'll recommend it when it fits. Custom ETL solutions earn their cost when a source has no good off-the-shelf connector, when your transformation logic is genuinely particular to how your business defines a metric, or when a managed tool's pricing stops making sense at your data volume. Most real pipeline estates are a mix, and deciding which sources need which approach is part of the scoping work.

Cost is driven mainly by how many source systems are involved and how well-behaved each one is — a documented REST API with a delta endpoint is a matter of days, while an undocumented legacy system with no reliable change signal takes considerably longer. After that, the volume and complexity of data quality rules matters more than raw data volume. A single well-behaved source pipeline is typically a few weeks; a multi-source integration with orchestration and quality checks is usually one to three months.

Data stays within your own cloud accounts and infrastructure wherever the architecture allows — we don't route your data through third-party systems outside what you've approved. Where a pipeline touches sensitive fields, masking or de-identification is built into the transformation stage rather than applied after the fact, and access to the pipeline's rejected-records store and logs follows the same role-based controls as the rest of your data platform.

If you need a one-off export for a single report, building orchestrated pipeline infrastructure is over-engineering — a script or a manual query is faster and cheaper. If your data volume is small and a source changes rarely, a simple scheduled job without the full change-data-capture machinery is often enough, and we'll say so rather than build more than the situation calls for. The complexity is worth it once you have several sources, ongoing operational dependency on the data being fresh, or a track record of pipelines breaking silently.

Yes — that's the majority of the work. Pipelines are built to land data in whatever you're already reporting from, whether that's a Snowflake warehouse we didn't build, an existing Power BI semantic model, or a homegrown reporting database. We design to your destination's schema and loading pattern rather than asking you to change your downstream tooling to suit us.

Yes, and it's a common starting point. We review the existing pipelines — orchestration, error handling, data quality coverage — and give you an honest read on what's sound versus what's fragile. Sometimes it's targeted fixes to add retries and alerting; sometimes the schema-drift and quality gaps mean a rebuild of specific pipelines makes more sense. Either way you get that assessment before commitment.

Our own in-house engineers in Sahibzada Ajit Singh Nagar, Punjab — 45+ of them, with over a decade of combined delivery experience, delivering for clients in 15+ countries. Nothing is subcontracted. You meet the engineers who will be on your project before you sign, and the person demonstrating the work each sprint is the person who built it.

BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT | BINARYBRILL - BRILLIANCE IN EVERY BIT

Tell us what data needs to move and where it's going

Send us a note on your source systems and where the data needs to land. A senior engineer replies within 24 hours with a straight read on the extraction pattern and pipeline architecture that fits.