Technology

Python Development Services — Backend, AI/ML, Data & Automation

Production Python engineering — FastAPI services, async pipelines, AI/ML workloads, data engineering at scale, and the typed, tested, observable discipline production Python deserves.

What we build with Python

  • FastAPI and Starlette services with async I/O, OpenAPI-first design, and Pydantic v2 schemas
  • Django and Django REST Framework for product-grade backends
  • AI / ML workloads with PyTorch, scikit-learn, transformers, LangChain, and LangGraph
  • Data pipelines with Airflow, Prefect, and Dagster — orchestrated, observable, and recoverable
  • Strict typing with mypy or pyright, enforced in CI — no untyped code lands on main
  • Modern packaging with uv or poetry, reproducible Docker builds, and lockfile hygiene
  • Background processing with Celery, RQ, Dramatiq, or arq
  • Database integration with SQLAlchemy, Tortoise, Prisma Client Python, or async drivers (asyncpg, motor)
  • Observability with OpenTelemetry traces, structured logs, and Prometheus metrics
  • Deployment to AWS Lambda, ECS, EKS, or Cloud Run — depending on workload shape
  • Migration paths from Python 2 to 3, from Flask to FastAPI, or from untyped to fully typed Python
  • Performance tuning: async correctness, asyncio profiling, and CPU-bound delegation to Rust/Cython where it pays off

Why DiveScale

Built by engineers who ship Python in production

Python is the default backbone for AI / ML, data engineering, and fast-moving APIs. DiveScale ships production Python with the discipline you would expect of a typed compiled stack — strict typing, async correctness, observability, and CI gates that block regressions before they reach main.

We work across the spectrum: FastAPI services holding tens of thousands of concurrent connections, Django apps anchoring full SaaS products, and data pipelines moving terabytes a day on Airflow / Prefect / Dagster. Whichever shape the workload takes, we build for change — typed seams, modular services, and tests that catch real regressions.

On the AI side, Python is increasingly the lingua franca for LLM orchestration. We build agent frameworks with LangChain and LangGraph, RAG pipelines with proper chunking and re-ranking, eval harnesses with golden datasets, and production wiring that handles retries, fallbacks, and provider routing.

We wire Python sensibly into the rest of the stack: TypeScript clients with generated types from OpenAPI; Terraform-managed deployment; containerization that scales horizontally on Kubernetes or serverless on Lambda; structured logs and OpenTelemetry traces so the boring parts of operations actually work.

And we take over struggling Python codebases honestly. A 2-week audit, quick wins shipped in the first month (typing, tests, slowest queries fixed), and a 3-month plan to bring the codebase to production discipline without freezing feature work. No big-bang rewrites.

Python use cases we deliver

FastAPI services

High-throughput async APIs with OpenAPI-first contracts, Pydantic schemas, generated client SDKs, and proper auth — built for tens of thousands of concurrent connections.

AI / ML application backends

Python services orchestrating LLM calls, vector search, embedding pipelines, fine-tuning workflows, and inference workloads with proper rate-limit handling and cost discipline.

Agentic systems with LangGraph

Multi-step agents with typed tools, state, memory, and human-in-the-loop checkpoints — built on LangGraph or the OpenAI Agents SDK.

Data engineering pipelines

Airflow, Prefect, or Dagster pipelines that ingest, transform, and load — with observability, recovery, and data-quality tests in CI.

Django product backends

Admin-heavy product backends where Django’s batteries-included approach genuinely beats hand-rolling, with django-stubs and mypy keeping behavior predictable.

Automation, scripting & ops tooling

Operational automation that replaces manual ops with reproducible scripts, CI-run jobs, and Python-based internal tools.

ML platform components

Feature stores, eval harnesses, training pipelines, and model registries — the operational backbone of production ML.

Data extraction & enrichment

Python pipelines that pull, validate, transform, and enrich data from APIs, databases, scraped sources, and document stores.

Python audits & rescues

We take over slow, untyped, or fragile Python codebases and bring them to production discipline — typed, tested, observable.

Python migration projects

Python 2 → 3, Flask → FastAPI, sync → async, untyped → typed. Done incrementally without freezing feature work.

How we deliver

Our Python delivery process

  1. 01

    Stack audit & target

    We map the current architecture and target a typed, tested, deployable shape — even if we are starting from a notebook or a 7-year-old Flask app.

  2. 02

    Foundation: typing + tests

    Strict typing with mypy or pyright in CI, pytest with coverage gates, and lockfile hygiene. Non-negotiable foundation before feature work.

  3. 03

    Build with observability

    OpenTelemetry traces, structured logs, metrics on real failure modes, health checks. Production from day one.

  4. 04

    Deploy & scale

    Containerized deploys to Kubernetes / ECS / Lambda / Cloud Run — chosen per workload, not per ideology.

  5. 05

    Performance pass

    Async correctness review, asyncio profiling, query plan tuning, and CPU delegation to Rust or Cython for the hot paths that justify it.

  6. 06

    Operate or hand off

    We can stay on for ongoing platform engineering, or hand off to your team with runbooks and a clean codebase they can confidently extend.

Python — Frequently Asked Questions

FastAPI for async APIs, AI workloads, and OpenAPI-driven development. Django for admin-heavy products and rapid CRUD. Starlette when we want FastAPI internals without the magic. Flask only for legacy maintenance. We pick per project, not per preference.

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