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Python Development

Python, Django and FastAPI Development

Senior Python engineers who run Django and FastAPI in production every day - for new platforms, high-performance APIs, upgrades and legacy modernisation.

Start Your Project Common Questions
What We Build

Python Development Services

Python has been at the centre of our work for years - from enterprise e-commerce to the AI platforms we build and run ourselves.

Django Platforms and SaaS

Multi-tenant SaaS, customer portals and back-office systems with Django's admin, ORM and security built in.

FastAPI and High-Performance APIs

Async APIs, webhooks and integration layers built for low latency and high throughput.

Real-Time Applications

Live chat, notifications and dashboards over WebSockets with Django Channels and Redis.

Integrations

E-commerce platforms, payment gateways, CRMs and third-party APIs, with retries and audit trails.

Data Pipelines and Automation

Imports, feeds, scheduled processing and automation that replaces manual work.

Upgrades and Modernisation

Python 3 and Django version upgrades, and legacy systems brought up to date without a risky rewrite.

Our Stack

The Python Stack We Run in Production

Frameworks

  • Django
  • Django REST Framework
  • FastAPI
  • Django Channels
  • Flask

Data

  • PostgreSQL and pgvector
  • MySQL / MariaDB
  • Redis
  • Elasticsearch
  • MongoDB

Infrastructure

  • Linux and nginx
  • Docker and Kubernetes
  • AWS, Google Cloud, Azure
  • Terraform
  • CI/CD pipelines

AI and Data Science

Upgrades

Python and Django Upgrades Without Stopping the Business

Our founder led a two-year migration of a 960,000-line e-commerce codebase from Python 2 to Python 3, embedded in a technical organisation of hundreds - and delivered it two weeks early, while the business kept shipping.

We bring the same approach to every upgrade and modernisation: small, reversible steps, backed by tests, instead of a big-bang rewrite.

How We Upgrade

  1. Audit the codebase, dependencies and risk areas
  2. Add tests where coverage is missing
  3. Make the code run on old and new versions side by side
  4. Migrate in small releases, measuring as we go
  5. Remove the compatibility layer once everything runs on the new version

Need Python engineers inside your own team instead? See team augmentation.

Track Record

Proven on High-Stakes Work

Sector, scale and engagement model for each - the work speaks for itself.

Since Carpathica

Consumer e-commerce Nearshore team augmentation

A client that followed us home

After the Python 3 migration, the same global consumer brand kept working with us once we had moved back to Romania - the same engineering standards, delivered nearshore.

SaaS Own products

Products we build and run

Panthero and Keelr (continuous attack-and-defence security), Tissia (AI customer service) and Carpathica Academy (a complete learning platform) - designed, built and operated by our own team.

AI agents Co-founded venture

An AI-agent commerce platform

Co-founded and built an AI-agent commerce platform that lets local businesses receive and serve customers' AI assistants in their own voice - vision, architecture and delivery end to end.

Before Carpathica - our founder, in London and Cambridge

Consumer e-commerce Team augmentation

960,000 lines, Python 2 to Python 3

Embedded for two years in the engineering organisation of a global consumer brand, migrating a 960,000-line e-commerce codebase from Python 2 to Python 3 across a technical team of hundreds - delivered two weeks early.

Marketing technology Outsourced build

An AI analytics platform that replaced the market leader

Built an AI social-media analytics platform from scratch for a London social media agency. It replaced the market-leading tool the agency had been using and earned UK Government innovation credit.

FAQ

Python & Django Development: Common Questions

Django and Django REST Framework for full platforms and admin-heavy products, FastAPI for high-performance and async APIs, and Flask where a small service is the right fit. We choose the framework for the problem, not the other way round.

Yes. Our founder led a two-year migration of a 960,000-line e-commerce codebase from Python 2 to Python 3 that was delivered two weeks early. We plan upgrades so the product keeps shipping while the migration runs.

Yes. We start with a code and architecture review, stabilise what is fragile, add the tests that are missing and then improve the product in small, safe steps.

Every day. Our own products run on Django and FastAPI with PostgreSQL, Redis and real-time WebSockets, so the practices we bring to client work are the ones we rely on ourselves.

On AWS, Google Cloud, Azure or dedicated Linux servers, with Docker, CI/CD and infrastructure as code. EU hosting is the default when your data needs to stay in the EU.

Tell Us What You Need to Build

Start with a no-obligation discovery call about your scope, stack and timeline - directly with the founder, not a sales team.

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