Services

What we build, and how far we take it

Nests d.o.o. delivers complete software products. Most of our work falls into the six areas below, and a typical engagement combines several of them.

01 — Mobile

iOS & Android applications

We build mobile applications natively in Swift and Kotlin, or cross-platform in React Native when a shared codebase is the better trade-off. We will tell you honestly which of the two your project needs.

  • Native iOS in Swift and SwiftUI, following Apple's Human Interface Guidelines
  • Native Android in Kotlin with Jetpack Compose
  • Cross-platform builds in React Native where it fits
  • Offline support, push notifications, in-app purchases and subscriptions
  • Code signing, TestFlight distribution and beta testing
  • App Store and Google Play submission, including the review process and privacy declarations

Release is part of the job

A build that works on a simulator is not a finished product. We take responsibility for provisioning profiles, store listings, screenshots, age ratings, App Privacy details and the back-and-forth with app review — so the app actually reaches your users.

If you publish under your own developer account, we work inside it and hand everything back to you at the end.

02 — Web

Web applications

Software that runs in a browser and has to hold up under real use: customer portals, internal tools, booking systems, dashboards and administrative back offices.

  • TypeScript and React front ends
  • Responsive layouts tested on real phones and tablets
  • Accessibility taken seriously — keyboard navigation, contrast, screen-reader labels
  • Role-based access, audit trails and multi-tenant structures where needed
  • Marketing sites and landing pages when a product needs one
03 — Backend

Backend, APIs & cloud

The infrastructure a product depends on, built so that it can be handed to somebody else and understood.

  • REST and GraphQL APIs in Node.js and TypeScript
  • PostgreSQL schema design, migrations and backups
  • Authentication, authorisation and secure credential handling
  • Payment providers, e-mail, SMS and third-party integrations
  • Cloud deployment with automated CI/CD pipelines, logging and monitoring
04 — Design

Product & interface design

User flows, wireframes, a complete visual design and a clickable prototype. Design happens before development, so structural decisions are made while changing them is still cheap.

You approve every screen before we start building it.

05 — Support

Maintenance & support

Software does not stand still. iOS and Android release yearly, dependencies get security advisories, and store policies change. We keep live products current under a monthly agreement.

Includes bug fixes, OS compatibility updates, dependency upgrades and small improvements.

06 — Consulting

Technical consulting

An architecture review, a code audit of an inherited system, or a second opinion on a quote you have received from another vendor.

Delivered as a written report with concrete, prioritised recommendations.

Engagement

How we can work together

Fixed-scope project

A defined product, a written specification, a fixed price and a delivery date. Best when the scope is well understood before work starts.

Ongoing development

A monthly allocation of our time against a rolling backlog you prioritise. Best for products that keep evolving after launch.

Maintenance retainer

A smaller monthly agreement covering updates, fixes and a guaranteed response time for a product that is already live.