Domain
Backend Development
Skill Profile
MinIO, presigned URLs, multipart upload, lifecycle policies, versioning, cross-region replication
Roles
6
where this skill appears
Levels
5
structured growth path
Mandatory requirements
15
the other 15 optional
Backend Development
File & Object Storage
3/17/2026
Choose your current level and compare expectations. The items below show what to cover to advance to the next level.
The table shows how skill depth grows from Junior to Principal. Click a row to see details.
| Role | Required | Description |
|---|---|---|
| Cloud Engineer | Uses S3 / Object Storage at a basic level in Terraform/CDK. Performs simple tasks using established templates. Understands basic concepts and follows team practices. | |
| Computer Vision Engineer | Uses S3 / Object Storage at a basic level in PyTorch/OpenCV. Performs simple tasks using ready-made templates. Understands basic concepts and follows team practices. | |
| Data Engineer | Uses S3/Object Storage at a basic level in Airflow/dbt. Performs simple tasks using established templates. Understands basic concepts and follows team practices. | |
| LLM Engineer | Uses S3/Object Storage at basic level in transformers/vLLM. Performs simple tasks using ready templates. Understands basic concepts and follows team practices. | |
| MLOps Engineer | Uses S3 / Object Storage at a basic level in Kubeflow/MLflow. Performs simple tasks using ready-made templates. Understands basic concepts and follows team practices. | |
| NLP Engineer | Knows S3 basics: buckets, objects, permissions. Stores NLP artifacts in S3: text corpora, trained models, annotations. Uses boto3 for basic upload/download operations. |
| Role | Required | Description |
|---|---|---|
| Cloud Engineer | Independently implements S3 / Object Storage tasks in Terraform/CDK. Understands internals and optimizes performance. Writes tests using Terratest. | |
| Computer Vision Engineer | Independently implements tasks with S3 / Object Storage in PyTorch/OpenCV. Understands internals and optimizes performance. Writes tests using evaluation metrics. | |
| Data Engineer | Independently implements tasks with S3/Object Storage in Airflow/dbt. Understands internals and optimizes performance. Writes tests with great_expectations. | |
| LLM Engineer | Independently implements tasks with S3/Object Storage in transformers/vLLM. Understands internals and optimizes performance. Writes tests using eval harness. | |
| MLOps Engineer | Independently implements S3 / Object Storage tasks in Kubeflow/MLflow. Understands internals and optimizes performance. Writes tests using model monitoring. | |
| NLP Engineer | Independently manages NLP data in S3: lifecycle policies for corpora, versioning for models, multipart upload for large files. Configures access policies. |
| Role | Required | Description |
|---|---|---|
| Cloud Engineer | Required | Designs S3 storage architectures with lifecycle policies, cross-region replication, and intelligent tiering. Implements bucket policies and access points for multi-account environments. Mentors on cost optimization. |
| Computer Vision Engineer | Required | Designs S3-based storage for large-scale image/video datasets and model artifacts. Implements versioned dataset pipelines with S3 Select for efficient querying. Optimizes multipart uploads for training data ingestion. |
| Data Engineer | Required | Designs data lake on S3: partitioning strategy (year/month/day), Parquet/ORC for analytics, lifecycle policies for archival. Optimizes costs through Intelligent-Tiering and Glacier. |
| LLM Engineer | Required | Designs S3/Object Storage solutions for production systems. Optimizes performance and scalability. Chooses between alternative approaches. Mentors the team. |
| MLOps Engineer | Required | Implements ML artifact storage in S3: models, datasets, training checkpoints, and experiment logs. Configures lifecycle policies for automatic archival of old model versions, bucket versioning for experiment reproducibility, and DVC integration for large dataset versioning. |
| NLP Engineer | Designs S3 architecture for NLP data: data lake for text corpora, versioned model store, cross-region replication. Optimizes costs through intelligent tiering. |
| Role | Required | Description |
|---|---|---|
| Cloud Engineer | Required | Defines architectural decisions for S3 / Object Storage at the product level. Establishes standards. Conducts design review and defines technical roadmap. |
| Computer Vision Engineer | Required | Defines architectural decisions for S3 / Object Storage at the product level. Establishes standards. Conducts design reviews and defines technical roadmap. |
| Data Engineer | Required | Defines S3 strategy for data lake: naming conventions, access patterns, versioning policy. Implements bucket policies and cross-account access for multi-team data sharing. |
| LLM Engineer | Required | Defines S3/Object Storage architectural decisions at product level. Establishes standards. Conducts design reviews and defines technical roadmap. |
| MLOps Engineer | Required | Defines the ML artifact storage strategy for the team: bucket structure for model registry, feature store snapshots, and experiment artifacts. Standardizes naming conventions, configures cross-region replication for DR, and optimizes storage costs through intelligent tiering for rarely used models. |
| NLP Engineer | Defines S3 storage standards for the NLP team. Establishes naming conventions, access policies, backup strategies, and cost management for NLP data and models. |
| Role | Required | Description |
|---|---|---|
| Cloud Engineer | Required | Defines S3 / Object Storage strategy at company level. Evaluates new technologies and approaches. Establishes enterprise standards and reference architectures. |
| Computer Vision Engineer | Required | Defines S3 / Object Storage strategy at the company level. Evaluates new technologies and approaches. Establishes enterprise standards and reference architectures. |
| Data Engineer | Required | Designs object storage architecture: multi-region replication, S3-compatible storage (MinIO) for on-prem, cost optimization through storage classes. Defines governance for data retention. |
| LLM Engineer | Required | Defines S3/Object Storage strategy at organizational level. Evaluates new technologies and approaches. Establishes enterprise standards and reference architectures. |
| MLOps Engineer | Required | Designs data storage architecture for the organization's MLOps platform: unified strategy for models, datasets, features, and experiment metadata. Makes decisions on choosing between S3, GCS, and MinIO, defines data governance, encryption, and compliance policies for ML artifacts company-wide. |
| NLP Engineer | Shapes enterprise storage strategy for NLP data. Defines data lake architecture, model storage standards, and governance for NLP artifacts at organizational level. |