We build software
that launches
startups
From mobile apps to SaaS platforms, we build complete systems from scratch. Flutter, React Native, Next.js, NestJS — from idea to production since 2018.
Building from
day one
Since 2018, DeliriumDev has been partnering with startups and companies from their earliest days. We don't just write code — we build entire systems from the ground up, helping bring products to life. From the first line of code to production, we work alongside founders to turn ideas into scalable, real-world software that users love.
We've helped build benefits platforms for gig workers in the UK, payment infrastructure for fintech startups, insurance tech systems that automate policy generation, and dozens of other products across industries. Whether you need an MVP to validate your idea or a production-grade system ready for thousands of users, we've been through it and know what it takes.
...and many more across fintech, healthtech, e-commerce, and SaaS.
Not just another dev shop
We're the team that sticks around long after launch day.
Startup DNA
We've been in the trenches with founders from day one. We understand the pace, constraints, and pivots that come with building a startup — and we thrive in that environment.
End-to-End Delivery
We don't hand off half-built projects. From architecture and design to deployment and maintenance, we own the full lifecycle of your product and deliver it ready for production.
Long-Term Partnership
We're not a revolving door of freelancers. We build lasting relationships with our clients, scaling teams and systems together as your product and business grow.
What we build
Mobile Development
Cross-platform mobile apps built with Flutter and React Native. We deliver polished, performant apps for iOS and Android from a single codebase — cutting development time without sacrificing quality or native feel.
Web Development
Modern, responsive web applications with React and Next.js. From interactive dashboards to customer-facing portals, we build fast, SEO-friendly web experiences that work flawlessly across all devices.
Backend & APIs
Scalable server architecture with NestJS and Express. We design and build robust REST and GraphQL APIs, handle database architecture, set up CI/CD pipelines, and ensure your backend can grow with your user base.
SaaS Platforms
End-to-end SaaS products from MVP to scale. We handle authentication, billing integration, multi-tenant architecture, admin dashboards, and everything else you need to launch and grow a subscription-based product.
How we work
A straightforward process that keeps you in the loop at every step.
Discovery
We start by understanding your business, your users, and your goals. We map out requirements, identify technical challenges, and define the scope — so we build the right thing from the start.
Design & Architecture
We plan the system architecture, choose the right tech stack, and design the user experience. This is where we make the decisions that keep your product fast, scalable, and maintainable.
Build & Iterate
We develop in short cycles with frequent demos and feedback loops. You see working software early and often — not a big reveal months later. We adapt as your vision sharpens.
Launch & Support
We handle deployment, monitoring, and the inevitable post-launch adjustments. We don't disappear after go-live — we stay on to optimize, fix, and help you scale as your user base grows.
Tools we use
Battle-tested technologies that let us move fast without cutting corners.
Mobile
Cross-platform frameworks that let us ship native-quality apps to both stores from a single codebase.
Frontend
Modern web technologies for building fast, interactive, and type-safe user interfaces.
Backend & APIs
Scalable server frameworks and databases — we pick the right storage layer for your data model.
Infrastructure & DevOps
Cloud hosting, containerization, and automated pipelines to keep your deployments fast and reliable.
Let's build
something
Have a project in mind? Tell us about it and we'll get back to you within 24 hours.