Nyuydine Bill Leynyuy
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Product Engineering

Build web and mobile products end to end

I work across the stack when a product needs coherent delivery: Django/FastAPI backends, React and Next.js frontends, React Native mobile apps, PostgreSQL data models, payments, auth, and cloud deployment. The goal is a shipped system, not a siloed ticket queue.

Discuss a full-stack engagementTechnical stack

Who this is for

  • ›Startups that need a senior engineer who can own a vertical slice
  • ›Teams shipping a web dashboard plus mobile companion
  • ›Companies that want backend, frontend, and infra kept in sync

Capabilities

Django, Django REST Framework, and FastAPI backendsReact and Next.js product interfacesReact Native apps shipped to Play Store and App StoreAuth, payments, PostgreSQL modeling, and API designDocker-based deployment on Azure and AWS

How engagements run

01

Map the product surface

Identify users, critical flows, and the smallest architecture that can ship without boxing the team in later.

02

Build the vertical slice

Implement API, data model, and UI together so the product stays coherent from day one.

03

Integrate real-world concerns

Add authentication, billing, admin workflows, and the operational pieces products actually need.

04

Deploy and stabilize

Ship to cloud environments with CI, monitoring, and a clear path for iteration.

Good fit

  • ›You need a builder who can move across backend, frontend, and mobile
  • ›You value production delivery over framework fashion
  • ›You want clean boundaries that other engineers can extend

Not a fit

  • ›Pure design-only or marketing-site-only work
  • ›Staff augmentation for tiny unrelated tickets with no ownership

Related work

Ready to talk through a problem?

Share the product context, constraints, and what success looks like. I reply to selected engagements that are a clear fit.

Discuss a full-stack engagement