Enterprise Software Engineering & Cloud Architecture | London & UK
Onesign Concept delivers high-reliability software platforms, distributed cloud architectures, and dedicated engineering capacity for enterprises, financial institutions, and growth-stage companies across London and the UK.
United Kingdom
Active sprint ceremonies, real-time code reviews, and overlapping working hours.
Fintech & Banking · Legal & Professional Services · SaaS Platforms · Digital Marketplaces
UK Enterprise Compliance & Financial-Grade Data Architecture
We architect multi-tenant SaaS platforms and cloud solutions adhering to stringent UK-GDPR, Cyber Essentials Plus, and FCA technical governance frameworks. With cryptographic audit logs, row-level security (RLS) in PostgreSQL, and UK/EU data residency guarantees on AWS and Supabase, your sensitive corporate data remains secure and legally compliant.
Direct GMT/BST Engineering Alignment & Agile Collaboration
Our systems architects and delivery leads work in full synchronization with London business hours. Enjoy real-time collaboration across Slack, Microsoft Teams, and GitHub, paired with bi-weekly sprint reviews, transparent Jira/Linear boards, and continuous integration workflows that eliminate timezone friction.
Custom Web Platforms, Mobile Apps & Dedicated Retainers
From complex Next.js micro-frontends and mission-critical payment workflows to cross-platform mobile apps and ongoing cloud infrastructure retainers, we deliver end-to-end engineering excellence with clean intellectual property (IP) assignment and production-ready source code handover.
Working with Onesign Concept in London
How do you ensure data sovereignty and UK-GDPR compliance?
All cloud architectures, databases, and backup routines are configured for UK or EU data residency regions (such as AWS eu-west-2 in London) with TLS 1.3 encryption in transit, AES-256 encryption at rest, and zero third-party data tracking.
Can our in-house engineering team collaborate directly with your developers?
Yes. We operate as an integrated extension of your technical team, sharing code repositories via GitHub/GitLab, collaborating in real-time communication channels, and leading daily standups.
Do we retain full ownership of the intellectual property (IP)?
Absolutely. Under our Master Services Agreement (MSA), 100% of the custom source code, architectural blueprints, database schemas, and documentation are transferred to your organization upon milestone completion.
Architect Your Next UK Software Platform
Schedule a technical scoping session with a senior systems architect or use our interactive estimator to calculate timeline and investment.