decode.agency

# DECODE

> DECODE is an EU-based, full-service software development partner for growing tech companies and established mid-market businesses, with offices in Zagreb and Düsseldorf. Since 2012, we've been building and scaling complex custom software products, from early product strategy and UX through technical implementation and long-term growth.
>
> Our senior multidisciplinary teams combine agentic engineering with product thinking, so we move faster without compromising quality. Once assigned, each team is 100% focused on your product, with no context switching.
>
> We specialize in custom software development (web, mobile, backend), cloud infrastructure, AI-powered solutions, and the modernization of existing systems. Our experience spans transportation and logistics, telecommunications, healthcare, fintech, and Internet of Things.
>
> Our clients range from growing tech companies like Decidr to established mid-market businesses like Supplentia. We've also delivered at scale for global enterprises like Microsoft, AT&T, and Royal Caribbean.
>
> DECODE has more than 90 employees across Zagreb and Düsseldorf. We're also ISO 27001 certified. Clients typically engage us through dedicated teams that work as an integrated extension of their organization.

## Services
- [Software engineering](https://decode.agency/services/software-engineering/) – Custom web & mobile apps, MVPs, AI, infrastructure.
- [Web app development](https://decode.agency/services/web-development/) – Full-stack web applications and scalable web infrastructures.
- [Mobile app development](https://decode.agency/services/mobile-app-development/) – Native and cross-platform mobile apps (iOS/Android), including Kotlin Multiplatform, Flutter, and React Native.
- [Android development](https://decode.agency/android-development/) – Native Android app development using Kotlin & Java.
- [iOS development](https://decode.agency/ios-development-services/) – Native iOS app development using Swift and Objective-C.
- [Kotlin Multiplatform development](https://decode.agency/kotlin-multiplatform-development/) – Shared-code apps across iOS and Android with Kotlin Multiplatform.
- [Flutter app development](https://decode.agency/flutter-app-development/) – Flutter cross-platform app development.
- [React Native development](https://decode.agency/react-native-app-development/) – React Native cross-platform mobile development.
- [IoT app development](https://decode.agency/services/iot-app-development/) – Companion mobile & cloud platforms for connected devices.
- [Custom software development](https://decode.agency/custom-software-development/) – Custom enterprise-grade software solutions built to match your exact business requirements.
- [AI software development](https://decode.agency/ai-software-development/) – AI-powered app development, intelligent automation, and AI agent development.
- [QA and testing](https://decode.agency/services/qa-and-testing/) – Full-cycle quality assurance and test automation to ensure bug-free, high-performance software.
- [Legacy software modernization](https://decode.agency/legacy-software-modernization/) – Legacy software modernization.
- [Proof of concept development](https://decode.agency/proof-of-concept/) – Proof of concept (PoC) development.
- [MVP development](https://decode.agency/mvp-development/) – MVP development.
- [Product discovery](https://decode.agency/services/product-discovery/) – Market research, user interviews, workshops to define product strategy and roadmaps.
- [Software product design](https://decode.agency/software-product-design/) – User-centered UX/UI design, wireframes, and prototypes for intuitive interfaces.
- [Tech consulting](https://decode.agency/tech-consulting/) – Technical consulting for architecture, tech stack, efficiency, and scalability.
- [Digital transformation](https://decode.agency/digital-transformation/) – Digital transformation, business process optimization, and AI modernization.
- [MVP scoping](https://decode.agency/mvp-scoping/) – MVP scoping.
- [Technical feasibility assessment](https://decode.agency/tech-feasiblity-service/) – Technical feasibility assessment.
- [Build-Operate-Transfer](https://decode.agency/build-operate-transfer/) – Build-Operate-Transfer (BOT) model.
- [Team extension](https://decode.agency/team-extension/) – Dedicated engineers embedded in your team.
- [Dedicated development team](https://decode.agency/dedicated-development-team/) – Dedicated development team model.

## Industries
- [Fintech](https://decode.agency/work/fintech/) – Mobile banking, payments, stock trading.
- [Communication](https://decode.agency/work/communication/) – Messaging, real-time collaboration.
- [Internet of Things](https://decode.agency/work/internet-of-things-iot/) – Connected devices & ecosystems.
- [Transportation & logistics](https://decode.agency/work/transportation-and-logistics/) – Tracking, routing, freight systems.
- [Healthcare](https://decode.agency/work/healthcare/) – EHR, telehealth, clinic & patient apps.
- [Other industries](https://decode.agency/work/other/) – Hospitality, EdTech, productivity, security.

## Content Hubs (Full Inventory)
- [Full article index](https://decode.agency/article/) – 48 pages, ~675 articles.
- [All case studies](https://decode.agency/case-study/) – 74 projects.
- [Engineering guides](https://decode.agency/guide/) – 8 guides.

## Guides & Resources
- [How to build and scale engineering teams](https://decode.agency/guide/how-to-build-and-scale-engineering-teams-expert-guide/) – Expert CTO guide on building and scaling engineering teams.
- [Cross-platform vs native app](https://decode.agency/guide/cross-platform-vs-native-app/) – Pros and cons of cross-platform vs native mobile.
- [Press kit](https://decode.agency/press-kit/) – Official DECODE logos, photos, key facts, and company background.
- [The Roadmap podcast](https://decode.agency/podcast/) – Software leadership, product & engineering discussions.

## Featured Case Studies
- [Railroad reservation system](https://decode.agency/case-study/railroad-reservation-system/) – Real-time reservation system for train capacity management.
- [Decidr AI](https://decode.agency/case-study/decidr-ai/) – Suite of intelligent agents for decision-making.
- [Supplentia](https://decode.agency/case-study/supplentia/) – Connecting health professionals with patients.
- [Qrypt](https://decode.agency/case-study/quantum-powered-security/) – Quantum-cryptography-powered secure communications.
- [Apex](https://decode.agency/case-study/apex/) – Scalable fitness platform for smart bikes.
- [Vitastiq](https://decode.agency/case-study/vitastiq/) – Bluetooth vitamin & mineral tracking device.
- [Proptia](https://decode.agency/case-study/proptia/) – Mobile app for residential community security.
- [ASEE](https://decode.agency/case-study/asseco/) – Bespoke mobile banking solution for financial services.
- [Royal Caribbean](https://decode.agency/case-study/royal-caribbean/) – Crew collaboration app for 70,000 users.
- [Metaswitch (Microsoft)](https://decode.agency/case-study/metaswitch/) – Carrier-grade unified communications apps.

## Blog Highlights
- [How DECODE builds software](https://decode.agency/article/our-software-development-process/) – An inside look at our development process.
- [Agentic development at DECODE](https://decode.agency/article/our-agentic-development-process/) – How we use AI to build software.
- [How to use AI coding agents effectively](https://decode.agency/article/how-to-use-ai-coding-agents/) – 9 battle-tested tips from a CTO.
- [Claude Code](https://decode.agency/article/claude-code-guide/) – How agentic engineering works in the terminal.
- [Inside DECODE's hiring process](https://decode.agency/article/how-we-hire-software-engineers/) – How we find and hire top talent.
- [How DECODE runs R&D](https://decode.agency/article/our-r-and-d-process/) – How we turn bench time into real value.
- [How to structure your software development team](https://decode.agency/article/software-development-team-structure/) – In-depth guide.
- [Why you need a technical project manager](https://decode.agency/article/why-you-need-a-technical-project-manager/) – The case for TPMs on software projects.
- [The hidden costs of hiring in-house software developers](https://decode.agency/article/hidden-costs-hiring-in-house-developers/) – Unexpected onboarding delays, management overhead, and retention challenges.
- [Essential software development contracts](https://decode.agency/article/software-development-contracts/) – NDA, MSA, and SOW: how to structure agreements that protect IP, define scope, and prevent scope creep.
- [How to measure ROI of custom software](https://decode.agency/article/custom-software-roi/) – Key metrics and methods to evaluate financial and strategic returns.
- [MVP development for enterprises](https://decode.agency/article/mvp-development-for-enterprises/) – A roadmap for building MVPs in large organizations.
- [How to plan enterprise software development](https://decode.agency/article/enterprise-software-development-planning/) – Framework for defining goals, assessing risk, architecting, and budgeting.
- [What the EU AI Act means for AI software development](https://decode.agency/article/eu-ai-act-software-development/) – Compliance obligations under the new EU regulation.
- [Terminal of the Future: how railroad management software can save you millions](https://decode.agency/article/railroad-management-software-solutions/) – Insights into systems that optimize terminal operations and boost efficiency.
- [DECODE's ISO/IEC 27001 certification](https://decode.agency/article/iso-certification/) – What it means and why it matters.

## Testimonials
- [Client testimonials](https://decode.agency/client-testimonials/) – Hear directly from clients like Qrypt, Apex Rides, ASEE, and Contacts 411 in video testimonials showcasing project results and engineering excellence.

## Social
- [LinkedIn](https://www.linkedin.com/company/decodehq/)
- [YouTube](https://www.youtube.com/@decodehq)
- [Facebook](https://www.facebook.com/decodehq/)
- [Instagram](https://www.instagram.com/decodeagency/)
- [X (Twitter)](https://x.com/decodehq)
- [The Roadmap on Spotify](https://open.spotify.com/show/6bc8WY0DCeNAjqhlILw1Z)
- [The Roadmap on Apple Podcasts](https://podcasts.apple.com/hr/podcast/the-roadmap/id1732287729)

## Offices
- Croatia (Zagreb): Radnička cesta 47, Zagreb
- Germany (Düsseldorf): Hammer Straße 19, Düsseldorf

## Legal & Contact
- [Privacy policy](https://decode.agency/privacy-policy/)
- [Cookie policy](https://decode.agency/cookie-policy/)
- [Contact](https://decode.agency/contact/)