React, Next.js and Node.js Development Partner in Poland
Senior engineers only. Start within days.
We build React, Next.js and Node.js products for CTOs and founders across Europe - senior engineers only, live in weeks, not months. We stay for the long run, not just the launch.
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Immersey is an AI-powered platform that lets anyone create, visualize, and interact with digital characters. Built on the foundations of Foregamer, a developer-focused NPC tool, it makes advanced AI accessible through a simple and engaging experience.
Product design / UX/UI design / Quality Assurance / Backend and API’s / Custom software development
Denmark's first drink-experience marketplace, live in 7 weeks. Customers book bartenders, mixologists, and sommeliers directly - no middlemen. Ships with an AI drinks planner that builds a full shopping list for your event.
Product design / End to End development / UX/UI design / Backend and API’s / Quality Assurance
We built the AI backend powering Foregamer's NPC system and wired it into the live game BattleRise in 3 months. NPCs run on a custom RAG architecture - pulling from lore data in milliseconds and maintaining coherent memory across player sessions.
LLM / Gen AI / End to End development / DevOps / GCP / Quality Assurance
Rebuilt the customer app for Sweden's largest home services company from the ground up. Rated 4.5★ on the App Store. Part of a long-term partnership covering their full product suite and engineering team.
Mobile app & mobile development / React & React Native / Node / DevOps / Backend and API’s / Product design
We are more than just a software company - we are innovators. Our dedicated product team combines technical excellence with creativity to bring your digital vision to life.
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The headquarters of Dev and Deliver is based in Cracow, Poland - the technological capital of Central Europe. However, if you are looking for a Polish software house in other cities (such as Warsaw) we are here to help you as well!
Our team specialises in building high-quality, end-to-end digital solutions that combine innovation with reliability. By leveraging modern practices like API development, automation, and integration, we ensure that every digital solution is scalable and future-ready. In addition, we place strong emphasis on agile delivery and software testing, both manual and automated, to guarantee stability and performance at every stage of development.
As we continue to grow as a company, we believe it is important to uphold the core values that drive us. Quality, transparency, and attention to detail are what make our software products stand out, and they remain central to the way our teams work. These values we've carried across 300+ projects delivered for clients from Krakow to Scandinavia and beyond.
They trust our software development expertise and choose us as their long-term partner for building custom solutions.
Every project follows the same proven lifecycle: workshops and prototyping first, then design and development, then launch and ongoing support. It's the same process that's kept Speeki with us for 5+ years, growing from a single product feature into a platform now serving 100+ enterprise clients.
We're a senior-only team built around React, Next.js, Node.js and NestJS - not a generalist agency that dabbles in everything. That focus is what lets our engineers move fast on enterprise platforms, mobile apps, and AI-driven products without a learning curve slowing things down.
Our custom software development work isn't just about writing code - it's about designing solutions that hold up for years, not just past launch. Every project is a chance to turn an idea into a product your users actually rely on.
Trusted custom software development company
At Dev and Deliver, we know a successful software project takes more than technical skill - it takes understanding the business behind it. That's why our custom software development work is built around collaboration and transparency, from the first discovery call through to launch and beyond, planned and executed by senior engineers rather than handed off down a chain of juniors.
AI is part of how we build now, not a separate offering bolted on - our engineers use it to move faster on the same React, Next.js and Node.js stack we've always specialised in, not as a replacement for senior judgment.
As a custom software development partner, we're committed to combining that speed with reliability. We don't just ship applications - we stay on as the long-term team behind them. Every project starts as a conversation about outcomes, not a spec sheet.
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