Programming languages
Software development in Java, TypeScript, Node.js, PHP, C and C++, Go, Kotlin, Swift, Scala and Rust: back-end services and APIs for fintech, e-commerce and SaaS, web front ends, Android and iOS apps, Spark data pipelines, embedded firmware, desktop software and cloud infrastructure tooling. Dedicated developers for your team, projects delivered end to end, and take-overs of systems other teams wrote.
Languages we work in
Each page covers what we build in the language, the industries it serves, the ways to work with us and the questions clients ask first.
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.
TypeScript development
TypeScript development services: Angular, React and Vue front ends, Node.js back ends, full-stack apps, monorepos and JavaScript to TypeScript migrations, with dedicated TypeScript developers or project delivery.
Covered on our service pages
.NET development
ASP.NET Core APIs, Azure Functions, EF Core and SQL Server from our largest engineering practice, backed by a Top Rated Plus Upwork agency. Take-overs of existing codebases welcome.
Python development
Python backends, data pipelines, AI agents and vector-database work, on AWS or Azure, delivered by engineers we hire and interview for exactly that stack.
Front-end development
Front ends on Angular, React, Vue and Next.js: design systems, accessibility checks on every component, and end-to-end tests that run before every release.
Mobile development
Native iOS apps in Swift, cross-platform apps in .NET MAUI and React Native, built by engineers who also own the backend the app talks to.
The same rules in every language
A Spring Boot service for a bank, a Laravel shop, firmware in C, an Android app or a Go operator for Kubernetes: the same rules apply. Tests ship with the feature, the build ends with zero warnings, dependencies stay on current releases and a security advisory is an unconditional upgrade, and infrastructure is code. A change that breaks a rule does not merge, whatever language it is written in.
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.
Questions about languages we work in
Which programming languages do you work in?
Java, TypeScript and Node.js, PHP, C and C++, Go, Kotlin, Swift, Scala and Rust, as well as C# and .NET, our largest practice, and Python. TypeScript covers both the front end, in Angular, React and Vue, and Node.js back ends. In every language you can hire dedicated developers or have a project delivered end to end.
Which industries do you build software for?
Fintech, banking and insurance, e-commerce and marketplaces, SaaS and enterprise software, healthcare, media and consumer apps, data and analytics, ad tech, education, logistics, cloud infrastructure and telecom, cybersecurity, industrial automation, automotive and connected devices. Each language page names the industries it serves and what is built there.
Can one team work across several languages?
Yes, and that is often the point: a Rust or Go component, the .NET, Java or Node.js services around it, the TypeScript web front end and the Swift and Kotlin apps, built by one team that agrees on the contracts between them.
Who owns the code your developers write?
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 developers in a language not listed here?
Tell us the stack, the seniority and the hours. You get an answer within one business day: candidate profiles or a plan for the work.