TypeScript development services
TypeScript development services for web front ends in Angular, React and Vue, Node.js back ends and APIs, full-stack TypeScript applications, shared component libraries and monorepos, React Native apps, and migrations of JavaScript codebases to TypeScript, with dedicated TypeScript developers for your team or a TypeScript project delivered end to end.
What we build with TypeScript
TypeScript front ends in Angular, React and Vue
Single-page and server-rendered applications on current Angular, React with Next.js and Vue with Nuxt, in strict TypeScript with typed forms and routes, and state in signals, TanStack Query, Redux Toolkit or Pinia.
Node.js services in TypeScript
APIs and workers on NestJS, Fastify or Hono, on current Node.js LTS releases, Deno or Bun, with Zod or Valibot checking every request at the edge and Prisma, Drizzle or Kysely over PostgreSQL.
End-to-end type-safe applications
One language from the database to the browser, with tRPC, GraphQL Code Generator or a client generated from the OpenAPI document, so a back-end change that would break a screen fails the build instead.
Moving JavaScript to TypeScript
Existing JavaScript moved file by file beside feature work: allowJs and checkJs first, JSDoc types where a file cannot move yet, then strict mode directory by directory, each step released on its own.
Typed design systems in Storybook
Component libraries in Angular, React or Vue with typed props and design tokens, documented in Storybook, checked for accessibility on every component and released as versioned packages.
Monorepos with shared types
Nx, Turborepo or pnpm workspaces with project references, shared packages for types, validation schemas and API clients, and cached builds that rebuild only what a change touches.
React Native and Expo apps in TypeScript
iOS and Android apps in React Native with Expo, sharing types, validation and API clients with the web front end in the same repository.
Browser extensions and embeddable widgets
Chrome, Edge and Firefox extensions on Manifest V3, and widgets and JavaScript SDKs your customers embed in their own sites, written in TypeScript and bundled small with Vite or esbuild.
Upgrades to TypeScript 7
Projects moved to TypeScript 7, the native compiler whose full builds typically run 8 to 12 times faster, once the options it removes, such as ES5 targets, baseUrl and node10 resolution, are gone, with TypeScript 6 kept beside it where Angular or Vue template checking still needs the older API.
Hire TypeScript developers
Dedicated TypeScript developers
TypeScript developers who join your team full time, work in your repositories, tracker and meetings, and report to your lead. You interview them; we carry the Ukrainian contract, payroll, invoicing and leave.
TypeScript project delivery
A team that takes the TypeScript project from scope to release: estimate, build, tests and deployment, with a technical lead on our side who owns the plan and the quality.
TypeScript support and take-overs
An existing TypeScript system taken over from another team or kept running: a read-only review and a written list of risks first, then fixes and new features in order of impact.
The dedicated team page explains how specialists join your team, and the outsourcing page covers project delivery, take-overs and how we charge.
Who works on your TypeScript project
Front-end engineers
Angular, React and Vue in strict TypeScript
Node.js developers
NestJS, Fastify and serverless functions
React Native engineers
iOS and Android apps sharing code with the web
UI and UX designers
Figma designs and design tokens
QA engineers
Playwright end-to-end and component tests
How we work on TypeScript
Strict mode on, no any outside the boundary where untyped data arrives, and that data parsed with a schema rather than cast. Type-aware ESLint rules run in the pipeline, the build ends with zero warnings, tests ship with the feature in Vitest and Playwright, and dependencies stay current with a security advisory treated as an unconditional upgrade.
Developers work in your repositories, your tracker and your process. The Ukrainian contract, payroll, invoicing and leave stay with us, and everything they write is assigned to you.
Other languages we work in
Java development
Java development services: Spring Boot microservices, banking and payment systems, e-commerce and SaaS back ends, Kafka integrations and legacy modernisation, with dedicated Java developers or project delivery.
Node.js development
Node.js development services: TypeScript APIs, e-commerce and SaaS back ends, fintech integrations, real-time and streaming features and serverless functions, with dedicated Node.js developers or project delivery.
PHP development
PHP development services: Laravel and Symfony applications, e-commerce on Magento, Shopware and WooCommerce, APIs, WordPress and Drupal, and PHP upgrades, with dedicated PHP developers or project delivery.
C and C++ development
C and C++ development services: embedded firmware, Qt desktop software, network and telecom software, low-latency systems, security software and C++ modernisation, with dedicated C++ developers or project delivery.
Go development
Go development services: Golang microservices and APIs, fintech and SaaS back ends, Kubernetes operators, event pipelines and network and security software, with dedicated Go developers or project delivery.
Kotlin and Android development
Android app development services in Kotlin and Jetpack Compose for banking, media, shopping and health apps, plus Kotlin Multiplatform and Ktor back ends, with dedicated Kotlin developers or project delivery.
Rust development
Rust development services: backend services and APIs, blockchain and Web3, systems and infrastructure software, security tooling, embedded firmware and WebAssembly, with dedicated Rust developers or project delivery.
Swift and iOS development
iOS app development services in Swift and SwiftUI: banking, shopping, media and health apps, Apple Watch and Vision Pro apps, Objective-C upkeep and App Store releases, with dedicated iOS developers or project delivery.
Scala development
Scala development services: Apache Spark pipelines, fintech and ad tech back ends, services on Akka, Pekko, ZIO or Cats Effect, Play apps and Scala 3 migrations, with dedicated Scala developers or project delivery.
Questions about TypeScript development
Which industries do you build TypeScript software for?
E-commerce and marketplaces (storefronts, checkout and seller tools), SaaS and enterprise software (dashboards, admin panels and multi-tenant products), fintech and insurance (customer portals, onboarding and trading screens), healthcare (patient portals and clinical tools), data and AI products (analytics interfaces and AI assistants), ad tech and marketing, media and consumer apps, education, and logistics (tracking and dispatch dashboards).
Do you have TypeScript developers on the team?
Yes. Our Angular, React and Vue engineers write TypeScript every day, including the Angular front end of the platform we run our own company on.
Is it worth moving our JavaScript to TypeScript?
For code that several people change and that will live for years, yes: types catch a class of defects before review, make refactoring safer and document the code for the next developer. The move happens file by file beside feature work, so delivery does not stop for it.
How quickly can TypeScript developers start?
When the right TypeScript developer is available, the start is gated only by your interview and the NDA and IP assignment. Otherwise we run a search, which typically produces candidate profiles within two to three weeks, and nobody starts until you have said yes.
How do we hire TypeScript developers through BigTree108?
Tell us the work, the seniority and the hours you need. We propose one or two people with their profiles, you interview them the way you would interview your own hire, and you sign one agreement with BIG TREE 108 LLC and receive one invoice a month.
Who owns the work they produce?
You do. Every specialist has a signed contract with BigTree108 that assigns all work product to the company, and our agreement with you assigns it onward. Code, designs and documents are delivered into your own repositories and tools, not kept where only we can change them.
Need TypeScript developers?
Tell us the front end, the back end and the TypeScript version you run today. You get an answer within one business day: candidate profiles or a plan for the work.