Machine Learning Engineer — Intelligent Payroll (TPY)

Team: HC Forward — Intelligent Payroll Role type: Individual contributor, builder track (no client engagement) Experience: 8–10 years hands-on building production data/ML systems Openings: 2

Human Capital — HC Forward The Human Capital Offering Portfolio helps organizations manage and sustain their performance through their most key asset: their people. We see Human Capital as a topic critical to the C-Suite, and we bring together technology, insights, and services to help our clients innovate faster and proactively drive their business strategies.

HC Forward is Deloitte’s innovation engine for Human Capital — integrating technology, data, and industry expertise to create scalable solutions and assets that extend client capabilities and drive ongoing value across all Human Capital offerings.

About Intelligent Payroll

Intelligent Payroll is an HC Forward platform that uses machine learning to detect anomalies, forecast variances, and reduce manual intervention in enterprise payroll processing. It runs on Azure, ingests data from multiple HRIS sources (SAP, Oracle, ADP, Workday), normalises it into a common data model, and serves both batch ML pipelines and rule-based validation engines.

This is a builder role. You will spend your time writing production Python code, designing pipelines, and shipping features. You will not be in client workshops, executive presentations, or pre-sales.

Data Scientist, 5-8 years experience,

Work you’ll do

∙Design and ship distributed data processing pipelines in PySpark, moving raw payroll data through a medallion architecture (raw → standardised → aggregated → modelled)

∙Build ML pipelines for time-series forecasting and anomaly detection over payroll data

∙Write clean, class-based, testable Python — interfaces, factories, dependency injection, not 800-line procedural scripts

∙Submit and orchestrate Spark jobs programmatically on a managed cloud ML platform (we use Azure ML Studio, but the patterns generalise)





∙Own the contracts between subsystems: data pipelines, ML libraries, and orchestration layers are intentionally decoupled, and you will help keep them that way

∙Write tests, write docs, review PRs, and treat the pipeline as a product, not a notebook

Requirements

Required Skills These are non-negotiable. If you don’t have these, this isn’t the right role.

Production PySpark

∙You have shipped PySpark code that ran in production — not just one notebook, but a pipeline that processed real data on a recurring schedule.

∙You know the DataFrame API, schema validation, parquet I/O, partitioning, and how to debug a job that’s slow or wrong.

∙You can write a PySpark job that runs locally for development and at scale in the cloud, without changing the business logic.

Strong Python & OOP

∙You write production Python by default: classes, modules, type hints, tests.

∙You know when to reach for an abstract base class, a factory, or dependency injection — and when not to.

∙You can read someone else’s class-based codebase and explain what it does, end to end.

Engineering experience

∙You design for boundaries: schemas between steps, interfaces between modules, contracts between services.

∙You ask about data quality before you ask about model choice.

∙You can work from a config file, a CLI entry point, and a YAML pipeline definition — not just python script.py.

Cloud ML platforms

∙You have submitted Spark or ML jobs programmatically using a cloud ML SDK (Azure ML, AWS SageMaker / boto3, Vertex AI) and understand cloud environments.

Data science fundamentals

∙Hands-on with core ML algorithms, with a solid grounding in regression.

∙Time-series modelling is a plus, not required.

Desired Skills

You don’t need all of these. You don’t even need most. But each one is a real signal.

Area

What it looks like

Cloud ML platforms

Comfortable working with cloud ML SDKs (Azure ML, AWS

SageMaker / boto3, Vertex AI) and submitting Spark or ML jobs programmatically; understands cloud environments

Azure identity model

You can explain DefaultAzureCredential, managed identity vs

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