18 Best Express.js Development Companies in Europe (2026)

Gilzor develops custom web products with TypeScript and Node.js, with Express listed among its backend frameworks alongside Nest.js, TypeORM, and Sequelize. Its wider web development work covers React, Next.js, Python, databases, QA, cloud infrastructure, and ongoing product support. This makes the company relevant when an Express backend is part of a larger web product rather than a standalone API assignment. Gilzor has European locations in Warsaw and Limassol.

SysGears combines Express with Node.js, TypeScript, NestJS, and several frontend and cloud technologies in its custom software work. Its service scope covers planning, software engineering, continuous QA, deployment, and post-release development, which can suit companies that want one team to handle both an Express backend and the surrounding application. The company maintains locations in Cyprus, Ukraine, and Poland, including Wrocław.

Metadrop has a dedicated Express.js practice centered on Node.js and TypeScript backend engineering. Its services include REST and GraphQL APIs, integration middleware, backend-for-frontend layers, microservices, event-driven services, modernization of older Express applications, and long-term maintenance. The team also works with Express 5, OpenAPI, PostgreSQL, MongoDB, Redis, Docker, Kubernetes, and major cloud platforms. Its Madrid base makes it a direct European option for API-heavy projects and legacy Node.js modernization.

OSKI Solutions handles full-stack JavaScript projects using TypeScript across both frontend and backend development. Its backend stack includes Node.js with Express or NestJS, while frontend work covers React, Vue.js, and Next.js. The company also supports APIs, integrations, inherited JavaScript codebases, TypeScript migration, testing, and continued product development. That mix is useful for teams that need Express development integrated with a wider product modernization or full-stack engineering project.

GoodCore develops bespoke Node.js software in the UK and explicitly includes Express.js in its technology stack. One published project used Node.js and Express.js for the backend of a web-based licence management system, with React on the frontend. The company also works on enterprise applications, web and mobile backends, APIs, real-time software, microservices, and serverless architectures. Its stack includes TypeScript, MongoDB, PostgreSQL, AWS, Azure, and Google Cloud.

NetDevs works across enterprise software using Node, .NET, JVM technologies, Python, and Go. Its broader capabilities include cloud and platform engineering, modern TypeScript frontends, legacy modernization, and dedicated engineering teams. For an Express-centered project, the company is most relevant where Node.js backend work forms part of a larger enterprise platform, cloud initiative, or mixed-stack modernization program rather than a narrowly scoped framework engagement. The company is based in Warsaw.

Devico offers dedicated Express.js developers as part of its software engineering and staff augmentation services. Its Express-focused offering covers JavaScript and TypeScript, REST and GraphQL APIs, WebSockets, databases, cloud platforms, and related Node.js frameworks such as NestJS, Koa, and Hapi. Companies can use Devico for individual specialists, staff augmentation, outsourced software development, or a dedicated team. European offices include London, Warsaw, and Lviv.

SECL Group has a dedicated Express.js development service covering web application backends, API development, maintenance, migration, software audits, and third-party API integrations. Its engineers work across the TypeScript and Node.js ecosystem, and the company also provides full-stack JavaScript development. European operations include offices in Amsterdam, Stockholm, and Lviv, giving clients several regional points of contact.

A-Listware provides web development and dedicated engineering services with Node.js among its supported backend technologies. Its web work includes backend business logic, API integration, testing, application support, modernization, and frontend development with frameworks such as React, Angular, Vue, and Next.js. Current engineering roles also call for experience with Node.js frameworks including Express and NestJS, providing additional evidence of Express capability within its JavaScript talent pool.

OmiSoft offers a dedicated Express.js development service covering backend architecture, real-time applications, API development and integration, database integration, middleware, migration, performance work, testing, deployment, and continued support. The company operates from several European locations, including Tallinn, Kyiv, and London. Its scope makes it relevant for businesses that need Express for more than simple endpoint development, particularly applications involving real-time functionality or an existing backend that needs restructuring.

AAM Services provides Express.js API development with a stack that includes Node.js, TypeScript, Passport.js, Prisma, and PostgreSQL. Its Express work emphasizes API architecture, middleware patterns, authentication, validation, testing, documentation, and extending existing applications. The company also handles custom platforms, integrations, eCommerce development, and cloud deployment. AAM operates as a remote-first UK agency, which can suit smaller or clearly scoped backend and API engagements.

SoftPro develops custom web applications from Warsaw, with Node.js included in its backend technology set alongside C# .NET, Python, and PHP. Frontend work includes React, Vue.js, HTML5, CSS3, and JavaScript, while the broader company offering covers custom software, modernization, cloud development, and long-term support. Its relevance to Express projects is strongest where a Node.js backend is one element of a broader full-stack or cloud application and the exact Node framework can be selected during technical planning.

Krify UK has a dedicated Express.js service for custom backend development. Its offering includes RESTful API development and integration, Express.js migrations, real-time applications, plugin development, and ongoing maintenance. The company also combines Express backends with frontend technologies such as React, Angular, and Vue when a project requires full-stack development. Its UK operation is based in London.

Hidden Brains UK offers Express.js development for web applications, APIs, third-party integrations, consulting, maintenance, and data migration. Its service is suitable for companies that need an Express backend built from scratch or want to move an existing application onto the framework. The UK team also works across sectors including finance, logistics, healthcare, education, retail, and media. Its office is located in Andover, Hampshire.

Kiwi Commerce provides UK-based Node.js development with Express.js, NestJS, and Fastify. Its engineers build REST and GraphQL APIs, real-time backends, microservices, and eCommerce integration layers, with Express used for lighter REST API and backend requirements. The company also offers white-label Node.js development for agencies, making it relevant for development studios that need additional backend capacity under their own brand. Its background in Magento, Shopify, and headless commerce gives the Node.js work a clear eCommerce angle.

Mobian is an Estonia-registered software development studio working on web, mobile, backend, and API projects for companies in areas such as fintech, healthcare, logistics, and enterprise software. The company supports both outsourced product development and team augmentation, with engineers working on complete platforms as well as individual application components.

Its Express experience is supported by published project work. For the Girls First Finance platform, Mobian built a backend using Node.js and Express together with AWS infrastructure and native mobile applications. The project included APIs, credit scoring, financial planning, social features, and multiple interconnected modules.

Itexus provides Node.js engineering for backend services, APIs, real-time functionality, event-driven applications, and distributed systems. Its Node.js developers work with Express.js alongside NestJS, Fastify, Koa, TypeScript, REST, GraphQL, WebSockets, Kafka, RabbitMQ, and AWS.

Express can be used for backend services built with TypeScript, while the wider Itexus technology stack covers PostgreSQL, MongoDB, Redis, Docker, Kubernetes, Azure, Google Cloud, and AWS. The company is particularly relevant to financial software and enterprise products, although its portfolio also covers healthcare, retail, insurance, IoT, real estate, and other sectors.

Lengreo combines web development with product planning, UX/UI, QA, DevOps, and post-launch improvements. Node.js is part of its core web development stack, together with React.js, TypeScript, Next.js, Laravel, and Ruby technologies. Its development services cover custom web applications, APIs, cloud-native systems, technology updates, and application development from discovery through deployment.

The company also works with the MERN stack, including MongoDB, Express.js, React.js, and Node.js. This makes Lengreo relevant for JavaScript-based web products where Express forms part of a broader full-stack architecture rather than being treated as an isolated backend technology.