What We Build
Bespoke web applications and SaaS platforms. Cloud-native systems and API development. Legacy software modernisation and monolith-to-microservices migration. Mobile-responsive web apps. Real-time data systems and dashboards. Integration platforms connecting your CRM, ERP, and marketing stack.
Our Tech Stack
React, Next.js, TypeScript, Node.js, Python, FastAPI. PostgreSQL, MongoDB, Redis for data. AWS (ECS, RDS, CloudFront, Lambda, Secrets Manager), Google Cloud. Docker and Kubernetes for containerisation and orchestration. GitHub Actions for CI/CD.
Who This Is For
Funded startups (Seed–Series B) who need production-grade software fast. Scale-ups that have outgrown their current platform. Enterprises with legacy systems that need modernising without downtime. Companies that have been burned by agencies and need a reliable, senior team.
Our Development Process
Discovery Sprint (2 weeks, Fixed timeframe): technical architecture design, stack selection, timeline and cost estimate. Build sprints (2-week cycles): working software every sprint, weekly demos. QA and testing: automated tests, staging environment, security review. Deployment: CI/CD pipeline, monitoring, runbook documentation. Handover: full code ownership transfer, 90-day warranty period.
Pricing & Engagement Models
Discovery Sprint: Fixed timeframe price, 2 weeks. Project-based: fixed price agreed at Discovery Sprint completion. Time-and-materials retainer: from £15,000/month for a dedicated pod of 3 engineers. Embedded team: we augment your existing engineering team with senior specialists.
Frequently Asked Questions
How much does custom software development cost in the UK?
Custom software development costs in the UK typically range from £25,000 for a focused MVP to £250,000+ for a complex enterprise platform. Brantum offers a fixed-price Discovery Sprint at £5,000 that scopes and validates your project before any large commitment. Day rates for senior full-stack engineers range from £700–£1,100 per day. We offer fixed-price, time-and-materials, and retainer engagement models.
How long does custom software development take?
A well-scoped MVP typically takes 8–16 weeks with an experienced team. A full SaaS product with integrations, multi-tenant architecture, and production-grade infrastructure typically takes 20–36 weeks. Brantum's Discovery Sprint (2 weeks, Fixed timeframe) gives you a precise timeline and cost estimate before committing.
Who owns the code after the project?
You do. Brantum operates with a full code ownership model. At project completion, all source code, documentation, and intellectual property transfer to you entirely. No lock-in, no ongoing licensing fees for code we wrote.
Do you use agile methodology?
Yes. Brantum uses agile sprint methodology with 2-week sprints, weekly demos, and continuous integration/continuous deployment (CI/CD). Every sprint includes QA, automated testing, and deployment to a staging environment. You see working software every two weeks — not just status updates.
Can you take over a software project that another agency started?
Yes. We regularly take on projects mid-build. We start with a technical audit of the existing codebase (included in our Discovery Sprint) to assess technical debt, architecture quality, and what to preserve versus rebuild. This typically takes 1 week.
