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Custom software development

Custom Software Development Services

We design, build and ship production web, mobile and enterprise software end to end — from architecture and UX to APIs, delivery and support. Built for startups and enterprises alike.

For enterprises modernizing, funded startups launching, and teams extending internal engineering capability.

For startupsFor enterprisesFor scale-ups
Software we build · end to end
Experience · web & mobile
React, mobile apps, design systems
Services · APIs & backend
APIs, microservices, business logic
Data · storage & pipelines
SQL/NoSQL, caching, search, analytics
Platform · cloud & delivery
CI/CD, infra, observability, security
Overview

What custom software development involves

Custom software is more than writing code to a spec. A product that lasts needs a sound architecture, a clear and usable experience, well-designed APIs, and the delivery and testing discipline to ship reliably and keep shipping. Cut corners on any of those and the product gets slower and more fragile with every release.

As a software development company, we build across the full stack: web and mobile front-ends, APIs and backend services, data and integrations, and the cloud infrastructure and CI/CD to run it. Whether you are launching a new product, modernising a legacy system, or extending an existing platform, we take it from idea to launch and beyond.

The problems we solve are concrete: turning an idea into a shipped product, replacing manual or legacy processes, scaling a system that has outgrown its foundations, and moving faster without breaking things. We pair strong engineering with product thinking — so what ships is usable, maintainable and built to grow.

At a glance
Who it’s for
Startups and enterprises building or modernising software.
Engagement
From-scratch builds, existing-project pickup, or advisory.
Proof
Response
Scoping reply within 2–3 business days.
Talk to our team →
What we deliver

Full-stack software capabilities

Eight capabilities that combine into a production product — take one or the full stack.

Our approach

How we run a software engagement

A disciplined path from idea to a launched, maintainable product.

01

Discovery & scoping

Requirements, users and constraints, with clear success metrics.

02

Architecture & UX design

System architecture and product design before we build.

03

Build & iterate

Short, demoable cycles with continuous integration and review.

04

QA & hardening

Automated testing, performance and security hardening.

05

Launch & release

Controlled release, monitoring and runbooks for a smooth go-live.

06

Support & scale

Ongoing support, features and scaling as usage grows.

Tech stack

Tools & frameworks we use

We choose the stack that fits your product, team and scale.

Frontend
ReactNext.jsTypeScriptReact NativeFlutter
Backend
Node.jsPythonGoJava.NET
Data
PostgreSQLMongoDBRedisElasticsearch
Infra & QA
AWS / GCP / AzureDocker / K8sCI/CDPlaywright
Proof

Products we’ve shipped

Production web, mobile and enterprise software — built end to end.

Why Magnus Mage

Built to ship, built to last

We combine from-scratch product depth with architecture that scales — so your software ships on time and stays maintainable as it grows.

We’re the engineering partner enterprises and funded startups pick when execution risk, time to launch, and long-term ownership matter — a single accountable team from architecture through operations.

Talk to our team →
01

From-scratch product depth

We’ve taken products from zero to launch — not just added features.

02

Architecture that scales

Systems designed to grow without a costly rewrite later.

03

Ship-focused

Short cycles, automated testing and reliable, repeatable releases.

04

Long-term partner

We stay to support, extend and scale as your product evolves.

FAQ

Software development questions

What buyers ask before starting a software project.

It depends on scope. An MVP is far smaller than a full enterprise platform with integrations and multiple apps. We scope against your requirements and give a clear range before work starts.

A focused MVP can ship in a couple of months; larger platforms run longer through discovery, build, QA and launch. We share a realistic timeline during scoping.

Based on your product, team and scale — not fashion. We favour proven, maintainable technologies and explain the trade-offs so you can decide with us.

Yes. We audit the codebase, stabilise it, and pick up development — whether it needs new features, a rescue, or modernisation.

Automated testing, code review, performance and security hardening, and quality gates in CI/CD so every release is safe and predictable.

Yes. You own all source code and IP we build for you, delivered with documentation and a clean handover.

Explore other services

Talk to our team

Tell us what you’re building. We’ll come back within 2–3 business days with a scoping call — straight to our team, no sales runaround.

From-scratch builds, existing-project pickup, or advisory
You own all code and IP
2–3 business day response
Thanks — we’ll be in touch within 2–3 business days.
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