Python Development Services

Python development services for web backends, APIs, AI and data products: Django and FastAPI builds, migration of legacy code and long-term support. Rated 4.9 out of 5 by our clients and ISO 27001 certified.

Trusted by

Estimate your project

Python development backed by real delivery

17+

Years in the market

Building web, mobile and AI products since 2008.

3,500+

Projects delivered

From MVPs to enterprise platforms.

900+

Clients worldwide

Product teams in 50+ countries.

4.9/5

Average client rating

How our clients rate their work with Netguru.

Medical document repository: 10+ sources in one Python system for 44 hospitals

A medical software company needed patient documentation from many hospital systems in one place, built to the standards hospitals require.

Netguru built the backend in Python and Django, compliant with XDS and HL7, and integrated more than ten documentation sources. The first release came in four months, and the system now runs in 44 hospitals in Poland.

  • 44

    Hospitals

  • 10+

    Documentation sources

  • 4

    Months to the first release

Read case study
Medical document repository case study

How a Python project runs from idea to launch

Six steps, each with a clear output you can review.

  1. Discovery and architecture

    We map users, integrations, data flows, and constraints, then sketch the architecture. You receive a scoped plan and an estimate built from your cost drivers.
  2. Stack choice

    We weigh Django, FastAPI, and Flask against your workload, then pick the database and a job queue such as Celery. You receive a written rationale for each choice.
  3. Build in sprints

    Python developers deliver working increments in short sprints, with peer review on every change. You receive a demo and a deployable build each sprint.
  4. QA and security review

    Automated tests, manual QA, and an OWASP Top 10 check run before release. You receive a test report and a list of resolved findings.
  5. Launch

    We run the release, watch the first live traffic, and keep a rollback path ready. You receive a production system and runbooks for your operations team.
  6. Post-launch support

    We fix bugs, patch dependencies, and plan the next iteration with you. You receive a support plan matched to your system.

Żabka Nano: the integration layer behind 50+ autonomous stores

Żabka wanted customers to walk into a store, pick up what they need and leave, with payment taken automatically at any time of day.

Netguru designed and built the architecture that connects authorization, payments, image recognition and store hardware, with Python services on Microsoft Azure. More than 50 Nano stores run on it.

  • 50+

    Nano locations live

  • 12,000

    Żabka stores in Poland

  • 4M+

    Transactions a day

Cooperation with Netguru allowed us to efficiently deliver our vision: the team brought valuable competencies in system architecture, backend development and cloud solutions that supported our business goals.

Paweł Grabowski

Head of Digital B2B at Żabka Future in Żabka Group

Read case study
Zabka Nano cashierless checkout screen.

Engineering standards behind every build

What a technical buyer can check before signing.

Code review and testing

Every change gets peer review and runs against automated pytest suites in CI before it merges. Where a UI is involved, we add WCAG checks.

Security practices

Our work follows ISO 27001 and OWASP Top 10 practices, with GDPR compliance for systems that handle personal data.

Framework fit

We choose between Django, FastAPI, and Flask by workload. Django suits full products, FastAPI async APIs, and Flask small services.

Performance

We profile before we tune, then fix the few hot spots that cost the most time, using caching and Celery for slow background jobs.

AI production readiness

Evaluation sets, monitoring for drift and failures, and token and cost controls ship with every model-backed feature.

Senior team composition

Teams combine senior Python developers, QA, a project manager, and a tech lead, drawn from our in-house specialists.

What our clients say

Rated 4.9 out of 5 by our clients.

One of the fastest and most successful API development processes that we've ever had.

Piotr Mlodecki

Global VP, SOL-MILLENNIUM Medical Group

If I had another project, I would directly start it with Netguru and not look for other providers.

Dr. Sayf Al-Sefou

CTO, CRIF Bürgel GmbH

If I had to choose two words to summarize our collaboration with Netguru it would be speed and efficacy.

Mark Greiner

Digital Innovation Manager, Merck KGaA

Why companies choose Python development

What Python changes for your business, and where it fits best.

Faster time to market

Django and FastAPI include authentication, admin panels and APIs by default, so a team ships the first release sooner.

One language for web, data and AI

The same Python codebase can serve your web backend, data pipelines and machine learning models, with no rewrite between them.

Lower cost to maintain

Readable code and a large hiring pool make Python products easier to hand over, extend and staff for years.

Mature libraries

Libraries such as pandas, PyTorch and Celery mean less custom code for data processing, AI features and background jobs.

How you can work with us

Three ways to start. Each one comes with the same delivery standards and a named delivery lead.

Fixed-scope project

A defined scope, timeline and budget, agreed after a paid discovery phase. It suits a first release or a well-specified module.

Dedicated team

A cross-functional team of Python developers, a QA engineer and a delivery lead that owns a roadmap with you sprint by sprint, under time and materials.

Team extension

Senior Python developers who join your in-house team, follow your process and tools, and are matched to the skills your roadmap needs.

Python development services: your questions answered

What are Python development services?

Python development services cover building, integrating, migrating, and maintaining software written in Python. That includes web apps and APIs on Django, FastAPI, or Flask, data pipelines, and machine learning features.

Unlike general software outsourcing, a Python vendor brings framework-specific experience. Read our Python glossary entry for the language basics.

How much do Python development services cost?

Cost depends on scope and the number of user roles, integrations, design depth, compliance and security needs, and team shape and engagement model.

We do not quote a figure before we understand those drivers. A discovery phase turns them into an estimate you can plan against.

How do I outsource Python development?

We usually recommend a fixed-scope project when requirements are clear, a dedicated team when the product keeps evolving, and team extension when you have a roadmap but need more engineers. Time and materials suits scope that will shift.

Start with discovery in every case, so the model matches the work.

How long does a Python project take?

Duration depends on scope, the number of integrations, data quality, approval cycles, and team size. A small API and a multi-role platform with payments and CRM sync sit far apart.

Discovery produces a timeline tied to your scope, so we do not give a generic number.

What should I ask a Python development vendor?

  • Which case studies match the system you want to build?
  • Do they hold a security certification such as ISO 27001?
  • Who owns the code, and is IP assignment in the contract?
  • Does the statement of work list milestones and acceptance criteria?
  • What support terms apply after launch?

Django, FastAPI, or Flask: which should I choose?

Our default is Django for full products that need an admin, authentication, and database models. We pick FastAPI for async APIs and model serving, and Flask for small services.

Celery handles background jobs in all three. See our Django development services.

How does Python migration and legacy modernization work?

We usually recommend refactoring in stages. A Python 2 to 3 migration starts with test coverage, moves to dependency upgrades, then converts module by module.

We rewrite only when the architecture blocks your business. Releasing in slices limits downtime, and risk falls as test coverage grows. Our enterprise Python guide covers more.

What does production-ready AI and ML take?

A demo is not a product. Production needs an evaluation set that scores output quality, monitoring for drift and failures, and cost controls on tokens and compute.

We build these in alongside the model, so you can see quality and spend after launch.

Talk to our Python development expert

Tell us about your product, and we will talk through scope, the right team and the engagement model.

Barbara Rybicka

Commercial Director

Click for the details