React, Next.js and Node.js Development Partner

in Poland

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.

Trusted by:

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weber logo
speeki logo
toja logo
8billions logo
joule group logo
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What we do

We're a senior-only React, Next.js and Node.js team - not a generalist agency that dabbles in everything. From the first workshop through prototyping, design, and development, to launch and ongoing support, we build products that hold up for years, not just past launch.

Our custom development work spans MVPs, full-cycle product builds, and modernising legacy systems - the same process that's kept Speeki with us for 5+ years, growing from a single feature into a platform now serving 100+ enterprise clients.

We've delivered 300+ projects for startups, mid-sized businesses, and enterprises. Whether you're starting fresh or need to take over an existing codebase, our team ensures your product is scalable, senior-built, and future-proof.

We provide iOS and Android mobile app development services using the latest technologies such as React Native and others. We back this up with Node.js environment.

Thanks to extensive knowledge and long-term experience, our mobile app developers create mobile products of outstanding quality that could be downloaded by thousands of end users in Google Play or App Store markets. You'll have access to an international development team, ready to tailor the product to each client's specific needs.

We offer versatile solutions to strengthen your development efforts, whether you need an entire team or a single specialist. Our full teams are built to deliver exceptional results, operating under proven processes and high standards. From developers to PMs, DevOps, architects, QAs, and UX/UI designers, we provide a complete crew ready to drive your project forward with efficiency and expertise. If you’re just missing a key player, we can help there too. Whether it’s a React developer, a Node.js expert, or a top-notch UX designer. We specialize in JavaScript technologies and can fill gaps in your existing team. For smaller projects, we offer flexible team augmentation options - hire a developer or team for a set duration or on a fixed budget. Struggling to build your own IT team? We can help kickstart it by blending your hires with experienced members of our crew, transferring best practices and ensuring your team gets off to a strong start.

At Dev and Deliver, we always strive to build highly performant websites that meet both the aesthetic and technical requirements of even the most demanding clients. We offer a holistic approach to web development, from a consult to deployment. 

It does not matter whether you are ready to start your own project or come to our company with the intention of using a template you have purchased before - remember, you are important to us!

As a creative software house, we design intuitive and user-friendly products as well as create from scratch or rebuild websites, mobile applications, and web applications.

Our Design Team cares for your project at every stage, explores your ideas and industry specialization, prepares high-fidelity wireframes, prototypes them, and then, in close cooperation with you, delivers final designs.

We also conduct UX audits to identify usability issues and enhance user satisfaction, ensuring seamless and engaging experiences. With a strong focus on UI design and UX design, we craft interfaces that are not only visually compelling but also highly functional and user-centric.

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Our team

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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Who we are

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.

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Companies that trust us

They trust our software development expertise and choose us as their long-term partner for building custom solutions.

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Joule group icon

Adidas icon

Flipside icon

3di icon

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speeki logo

Gents icon

Toja logo

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Latest posts

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Our expertise in software development services

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.

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computers

From AI tooling in our workflow to AI features in your product

We use AI tooling - Cursor, Copilot, Claude, custom agents - across the full development cycle. Not to replace engineers, but to ship faster without cutting corners. The same senior judgment, less time spent on the mechanical parts.

We've built AI into production products - a compliance assistant guiding users through whistleblower reports, an NPC engine processing lore in milliseconds, a character platform where every persona has persistent memory across conversations. If your product needs AI that actually works under real load, we've been there.

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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What our clients say

mixmatch logo

Dev and Deliver moved fast without cutting corners, and weren't afraid to challenge our ideas when it made the product better and unique. Exactly what we needed.

Shawn Kernon

Owner, Mixmatch, Denmark

see mixmatch case study
speeki logo

After six years together, Dev and Deliver feel like part of our own team. They know our product inside out and care about it like we do.

Mike Chew

Product Director, Speeki, Hong Kong SAR

see SPEEKI case study
hemfrid logo

Cooperation from Stockholm has been effortless - quick responses, clean and well-documented code, and a team that understands what we're trying to achieve as a business.

Daniel Olufsen

CEO, Hemfrid, Sweden

see hemfrid case study
immersey logo

DND were excellent to work with and helped bring our vision for intelligent, immersive characters to life.

Michał Stasiak

Owner, Foregamer, Poland

see immersey case study
kidway logo

Working with Dev and Deliver was a great decision - we trusted the team from day one, and they delivered a high-quality app that exceeded our expectations.

Anna Jarzabek

Owner, Kidway, Poland

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FAQ

How quickly can we actually get started?

Who will actually be working on our project?

Can you take over a project that's already in progress - or in a mess?

What makes you different from other software houses?

How do I know if Dev and Deliver is the right fit for my project?

Want to light up your ideas with us?

Kickstart your new project with us in just 1 step!

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