Backend

Fractional CTO for Python

Python is the go-to language for data science, ML/AI, and increasingly for web backends. We help companies architect Python systems, choose between Django and FastAPI, and build maintainable applicati...

Expert Python Leadership

Python is the go-to language for data science, ML/AI, and increasingly for web backends. We help companies architect Python systems, choose between Django and FastAPI, and build maintainable applications.

Typical Timeline

Django MVP: 6-10 weeks, FastAPI service: 4-8 weeks, ML integration: add 4-8 weeks

Investment Range

$50,000-$200,000

Why Choose Us

  • Readable, maintainable code
  • Excellent for data science and ML workflows
  • Large ecosystem of well-maintained packages
  • Great for rapid prototyping
  • Strong community and documentation

Common Python Challenges We Solve

Choosing between Django (batteries-included) and FastAPI (modern async)

Performance optimization for CPU-bound operations

Async programming patterns with asyncio

Type hinting adoption and enforcement

Dependency management with pip/poetry/conda

Scaling Python web applications

Integration between web apps and ML systems

Testing strategies for data-heavy applications

Python Best Practices

Use type hints throughout with mypy enforcement

Implement proper virtual environment management

Use FastAPI for new API projects requiring async

Implement proper exception handling patterns

Use Pydantic for data validation

Set up proper logging with structlog

Use pytest for comprehensive testing

Implement proper dependency injection patterns

Complementary Technologies

DjangoFastAPISQLAlchemyCeleryRedisPostgreSQLDocker

Scaling Considerations

Python's GIL limits CPU-bound scaling on single processes. Use multiprocessing, Celery, or horizontal scaling for compute-heavy workloads.

Security Considerations

Use Django's built-in security features, validate all inputs with Pydantic, implement proper authentication, keep dependencies updated.

Performance Optimization

Profile with cProfile, use async for I/O-bound operations, cache with Redis, optimize database queries, consider PyPy for CPU-bound work.

Success Story

Seed-stage AI startup building ML-powered API

Challenge

Needed to serve ML model predictions at scale while maintaining fast iteration on model improvements.

Solution

Fractional CTO designed FastAPI architecture with model versioning, implemented async processing, set up ML pipeline integration.

Result

Serving 1M+ predictions/day with 50ms p99 latency. Model deployment time reduced from days to hours.

Timeline: 3 months

Recommended Team Structure

Python teams often include both web developers and data engineers. Typical: 2-4 backend developers, potentially dedicated ML engineers.

Python Experts by Location

Find Python fractional CTO expertise in your city. Our technical leaders work with teams worldwide.

San FranciscoNew YorkAustinSeattleLos AngelesBostonDenverAtlantaChicagoMiamiPortlandPhoenixWashington DCMinneapolisSan DiegoDallasHoustonPhiladelphiaSan JoseDetroitCharlotteNashvilleLas VegasSalt Lake CityColumbusLondonBerlinParisAmsterdamDublinStockholmZurichCopenhagenBarcelonaMunichTorontoVancouverMontrealWellingtonSingaporeSydneyMelbourneBangaloreTokyoHong KongTel AvivManchesterEdinburghFrankfurtHamburgHelsinkiOsloMilanLisbonWarsawPragueBudapestViennaTallinnVilniusBucharestSofiaAthensBrusselsPortoKrakowGothenburgRomeGenevaLuxembourgCambridgeMumbaiDelhiHyderabadPuneShanghaiBeijingShenzhenSeoulBangkokKuala LumpurJakartaManilaHo Chi Minh CityTaipeiOsakaSão PauloMexico CityBuenos AiresBogotáSantiagoGuadalajaraDubaiCape TownJohannesburgLagosCaliforniaTexasFloridaNew York StateIllinoisGeorgia StateMassachusettsWashington StateColoradoArizonaNorth CarolinaOregonMinnesotaMichiganPennsylvaniaBristolBirminghamLeedsGlasgowLiverpoolStuttgartCologneDüsseldorfLyonToulouseMarseilleRotterdamUtrechtEindhovenAntwerpMalmöAarhusEspooTampereValenciaBilbaoSevilleTurinBolognaNaplesBratislavaLjubljanaZagrebBelgradeCluj-NapocaWrocławRigaReykjavikCorkBaselLausanneBrnoOxfordNantesBordeauxChennaiKolkataAhmedabadJaipurChandigarhKochiHangzhouGuangzhouChengduNanjingSuzhouWuhanFukuokaYokohamaNagoyaKyotoBusanBrisbanePerthAdelaideAucklandChristchurchHanoiPenangCebuBandungSurabayaChiang MaiKaohsiungColomboKarachiLahoreIslamabadDhakaAlmatyTashkentKathmanduYangonBakuTbilisiAbu DhabiRiyadhJeddahDohaJerusalemKuwait CityManamaAmmanBeirutNairobiAccraKigaliCairoAlexandriaCasablancaRabatTunisDakarAbujaPort HarcourtPretoriaDurbanMombasaKampalaDar es SalaamAddis AbabaLusakaHarareMaputoLuandaKumasiMarrakechAlgiersTripoliGaboroneRio de JaneiroBrasíliaBelo HorizonteCuritibaPorto AlegreRecifeMonterreyPueblaTijuanaCórdobaRosarioMedellínCaliValparaísoLimaMontevideoSan JoséPanama CityQuitoSan JuanSanto DomingoKingstonGuatemala CityPort of SpainCaracasLa PazAsunciónSan SalvadorManaguaTegucigalpa

Need Python Expertise?

Get expert fractional CTO guidance for your Python project. Start with a free assessment.