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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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 contract 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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Definition of our software house

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.

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Some clients of our software company

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

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logo 8billion

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Latest posts

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Our expertise in software development services

We believe that every software development project deserves a structured approach and expert guidance. That’s why we follow a proven development lifecycle, from initial workshops and prototyping to deployment and ongoing support. This approach allows us to reduce risks, ensure scalability, and deliver consistent quality.

As a top software development team, we combine the creativity of every software engineer with best practices in software development development to deliver products that solve real business challenges. Whether it’s enterprise-level platforms, mobile solutions, or AI development, our engineers tailor technology to your unique goals.

Our custom software development services are not just about writing code—they are about designing solutions that align with your vision, improve workflows, and create measurable results. Every software project we take on is an opportunity to turn an idea into a product that users truly value.

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 recognise that launching a successful software project requires more than technical skills—it requires understanding business needs, industry trends, and user expectations. That’s why our custom software development services are built around collaboration and transparency. From early discovery to final delivery, our development lifecycle ensures no detail is overlooked.  Each stage is carefully planned and executed with strong project management practices by experienced software engineers to create reliable and sustainable digital products.

With strong expertise in AI development, we also help companies leverage emerging technologies to gain a competitive edge.

As a custom software development firm, we are committed to combining innovation with reliability. We don’t just create applications—we deliver software development solutions that grow with your business and stand the test of time. Every software development project is treated as a partnership, ensuring results that drive long-term success.

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What our clients say

Anna Jarzabek
Anna Jarzabek

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

Anna Jarzabek

Owner, Kidway, Poland

Daniel Olufsen

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
Michał Stasiak
Michał Stasiak

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

Michał Stasiak

Michał Stasiak

Owner, Foregamer, Poland

see immersey case study
Mike Chew

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
Shawn Kernon
Shawn Kernon

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

Shawn Kernon

Owner, Mixmatch, Denmark

see mixmatch case study

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