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.

explore

Recent work

Immersey

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

Mixmatch

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

Foregamer

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

Hemfrid Customer App

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

View all work

What we do

Software development

Mobile app development

IT outsourcing / Team augmentation

Website development

Product & UX/UI design

More our skills

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.

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.

teammates

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.

More about us

Companies that trust us

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

Latest posts

Next.js vs React Router v7 vs Astro in 2026: a practical comparison

Development

2026-08-11

Next.js vs React Router v7 vs Astro in 2026: a practical comparison

News

2026-08-07

Top 10 leading software development companies in Poland

News

2026-08-06

Top leading companies offering Next.js developers

NestJS vs Express vs Fastify in 2026: a practical comparison

Development

2026-07-17

NestJS vs Express vs Fastify in 2026: a practical comparison

News

2026-07-01

Top 10 NestJS development companies: Your ultimate guide to finding the perfect partner

React Native vs Flutter in 2026: a practical comparison

Development

2026-06-02

React Native vs Flutter in 2026: a practical comparison

Frontend

2026-04-21

Next.js 15 vs 16: What actually changed, and should you upgrade your production app?

Poland's Top Node.js developers: a comprehensive review - update for March 2026

News

2026-04-07

Poland's Top Node.js developers: a comprehensive review

Next.js Cache Components: Fix Runtime Env Variables and Maximize Static Rendering with PPR

Development

2026-04-01

Next.js Cache Components: Fix Runtime Env Variables and Maximize Static Rendering with PPR

From "Vibe" to "Verified": How to ship AI-generated apps to production

Development

2026-02-25

From "Vibe" to "Verified": How to ship AI-generated apps to production

Our expertise

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.

A software house that sticks around

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.

Want to light up your ideas with us?

Kickstart your new project with us in just 1 step!

Prefer to call or write a traditional e-mail?

(+48) 789 188 353

hi@devanddeliver.com

Dev and Deliver

sp. z o.o. sp. k.

Address

Józefitów 8

30-039 Cracow, Poland

VAT EU

PL9452214307

Regon

368739409

KRS

94552994

Proud Member of

Swedish-Polish Chamber of Commerce