Data Engineer Skills for Your Resume: Describe Your Stack

Python appears in 82% of data engineer job postings. It is the most-mentioned skill across all engineering role types, all seniority levels and most industries.

It is also one of the least informative skill listings on most resumes.

"Proficient in Python" tells a hiring manager that you have learned the language. It does not tell them which libraries you used in production, what scale of data you processed, whether you wrote tests, or what the system outcome of your code was. Those details separate a screened-out resume from a first call.

The same problem applies to every other skill on a data engineer resume. This guide covers how to describe each layer of the modern pipeline stack in a way that actually clears parsers and gives engineering interviewers something to probe.

Want to apply this as you read? The free data engineer resume builder pairs an ATS-clean layout with skill hints from live job data — no sign-up required.

Python: the floor, not the ceiling

Python is table stakes for data engineering. 82% of postings mention it. That means Python gets you considered — it does not get you hired.

The signal is in what you did with Python and at what scale. The framework for describing Python depth on a resume:

Name the libraries at production depth. Not just "Python" — Python with PySpark (distributed processing), with Pandas (local transformation), with SQLAlchemy (database interaction), with boto3 (AWS SDK), with Airflow (orchestration logic). Libraries are the signal that you have used Python for real engineering work, not scripting.

Mention the data volume. "Python pipeline processing 3 TB daily" is parseable and memorable. "Python scripting" is not.

Attach an outcome. What did the pipeline do, for how many consumers, with what SLA? The outcome is what gives an engineer a mental model of your actual work.

Weak: Python — data processing and automation

Strong: Python (PySpark, Pandas, boto3, SQLAlchemy) — ELT pipelines, 3 TB daily, 40+ source integrations, serving 15 downstream analytics consumers

Apache Spark: specify the context

Spark appears in 58% of engineer postings and is growing. At senior level it reaches 68%. It is one of the most probed skills in engineering technical screens — if you list it, expect detailed questions.

What interviewers check when they see Spark on a resume:

• PySpark vs Scala Spark (most companies use PySpark; Scala signals more infrastructure depth)
• Cluster management layer: EMR, Databricks, GKE with Spark, standalone
• Whether you have done performance tuning (partitioning, broadcast joins, shuffle optimization, checkpointing)
• The data volume you worked with routinely

Weak: Apache Spark — big data processing

Strong: PySpark on Databricks — 8 TB daily batch and incremental loads, partition optimization reducing stage time by 62%

At entry level, Spark from a personal project is legitimate — name the cluster environment, the dataset size and what you were computing.

dbt: the fastest-growing differentiator

dbt appears in 36% of engineer postings but carries a 13–21% salary premium. The gap between demand and premium means the market is paying for a skill that not many candidates have at real depth.

dbt depth signals on a resume:

• Number of models in the project (10+ in a personal project, 50+ in a production environment is meaningful)
• Whether you wrote schema tests (not_null, accepted_values, relationships) — this signals data quality thinking
• Whether you owned the CI/CD layer for dbt (GitHub Actions, dbt Cloud, Airflow-orchestrated)
• Whether you used dbt docs / exposures for lineage documentation

Weak: dbt — data transformation

Strong: dbt — 85-model project with full schema test suite, Airflow-orchestrated, documented with dbt docs; owns model review and deployment CI/CD

Apache Airflow: orchestration specificity

Airflow appears in 42% of postings. The signal engineering teams look for is whether you understand DAG design, not just whether you can trigger a script.

What to include when describing Airflow experience:

• Number of DAGs or pipelines you owned or built
• Operator types you worked with (PythonOperator, BashOperator, custom operators, sensors)
• Whether you handled backfill scenarios, SLA alerting or dependency management
• The orchestration pattern: batch-scheduled vs event-triggered vs sensor-driven

Weak: Apache Airflow — pipeline scheduling

Strong: Apache Airflow — 30+ DAGs, custom sensors for API availability, SLA alerting, Celery executor on ECS; owns backfill tooling for 2-year historical reprocessing

Cloud depth: platform and service specificity

AWS leads at 62%, Azure at 44%, GCP at 28%. Most engineering teams run on one primary cloud — tailoring your resume to match the job description's platform is the highest-leverage keyword optimization available.

Services matter more than platform certifications. Listing "AWS" is less informative than:

AWS: S3 (data lake landing), Glue (ETL jobs), Redshift (warehouse),
     Lambda (event-driven transforms), EMR (Spark clusters),
     CloudWatch (pipeline observability), IAM (data access control)

The service specificity tells a hiring manager exactly which part of the AWS data stack you can operate without ramp time. "AWS Certified" in a certifications section adds supporting evidence — but the service list in the skills section is what engineering interviewers read first.

How skill combinations affect salary

The premium is not in individual tools — it is in combinations that signal architectural thinking.

The Spark plus Databricks combination commanding 30% above median is the clearest illustration of the scarcity premium. Most mid-level engineers know Spark in isolation — far fewer have production experience on Databricks with Unity Catalog, Delta tables and Databricks Workflows. That specific combination is what the premium reflects.

For the full data engineer resume picture — structure, annotated examples, ATS patterns and salary benchmarks — see the data engineer resume guide.

Related guides in this cluster:

• Data engineer resume guide (2026) — full market analysis, resume examples and salary benchmarks
• AWS and Azure data engineer resume guide — cloud platform depth and certification positioning
• Entry-level data engineer resume guide — building your stack description without production experience