1. Backend / API Developer
Backend developers build the server-side of web applications β the APIs, databases, and business logic that power websites and mobile apps. Python tools: Django, FastAPI, Flask, SQLAlchemy, Redis, PostgreSQL. Day-to-day: designing REST APIs, writing database queries, handling authentication, deploying to cloud. Salary: $90,000β$140,000 US.
# FastAPI route example
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
app = FastAPI()
class User(BaseModel):
name: str
email: str
@app.post("/users/")
def create_user(user: User):
# Save to database here
return {"id": 1, **user.dict()}
2. Data Scientist
Data scientists extract insights from data to inform business decisions. They combine statistics, domain knowledge, and Python coding. Skills beyond Python: SQL, statistics, probability, data visualization, Excel, Tableau. Day-to-day: analyzing datasets, building dashboards, creating predictive models, presenting findings. Salary: $100,000β$160,000 US.
3. Machine Learning Engineer
ML engineers build, train, and deploy machine learning models at scale. More engineering-focused than data scientists. Skills: Python, PyTorch/TensorFlow, MLOps tools (MLflow, Weights&Biases), cloud platforms, Docker/Kubernetes. Salary: $130,000β$180,000 US β one of the highest-paying tech roles.
4. DevOps / Site Reliability Engineer
DevOps engineers automate infrastructure, CI/CD pipelines, and deployments. Python used for writing automation scripts, configuration management (Ansible), and cloud infrastructure (AWS CDK). Skills: Linux, Docker, Kubernetes, Terraform, cloud platforms. Salary: $110,000β$160,000 US.
5. Test Automation Engineer / QA
Automation QA engineers write test scripts that automatically verify software works correctly. Python tools: Pytest, Selenium, Playwright, Robot Framework. This is an excellent entry point into tech β lower experience requirements, still very well paid. Salary: $70,000β$120,000 US.
6. Data Engineer
Data engineers build the pipelines that collect, clean, and deliver data to analysts and scientists. Skills: Python, SQL, Apache Spark, Airflow, Kafka, cloud data warehouses (BigQuery, Redshift, Snowflake). Salary: $110,000β$165,000 US β extremely high demand.