Crossbill Ltd builds robust, thoughtfully architected software for companies that can't afford to stand still. From product development to platform engineering.
Crossbill Ltd is a software and technology company focused on building reliable, maintainable systems. We care about architecture, code quality, and shipping things that last — not just things that ship.
Based in the UK, we work with startups and established businesses alike, bringing senior engineering expertise to every engagement. Whether you need a product built from scratch or want to scale an existing platform, we become a trusted part of your team.
End-to-end engineering capabilities from first concept to production infrastructure.
Full-stack development of web applications and internal tools. From design systems to backend APIs — we build it properly the first time.
Design and deploy scalable, cost-efficient cloud infrastructure. Kubernetes orchestration, CI/CD pipelines, and infrastructure-as-code.
Architecture reviews, technology audits, and roadmap planning. We help CTOs and founders make better technical decisions faster.
Connect your systems. We design and build third-party integrations, data pipelines, and developer-facing APIs that are a pleasure to use.
Security-first engineering. We implement best practices, conduct code reviews, and help you meet SOC 2, GDPR and ISO 27001 requirements.
Performance engineering, database tuning, and system refactors for products hitting growth pain points. We find and fix bottlenecks.
Have a project in mind, or just want to explore what's possible? We typically respond within one business day.