System Integration · London
System Integration in London
Connecting the systems a London business already runs so information moves between them without a person in the middle. The decision that matters most is which system owns each piece of data — integrations that skip it produce two systems overwriting each other and nobody able to say which is right.
Why this comes up
The problem
The CRM, the accounting system and the operations tool each hold a version of the customer. Staff rekey between them, the versions diverge, and reconciling is somebody's weekly job.
What you get
What we deliver
- A system of record agreed per data type, so precedence is decided not discovered
- Field mapping documented, including what does not map and what is deliberately dropped
- Sync direction chosen per field rather than bidirectional everywhere by default
- Conflict handling defined for the cases where both sides changed
- Error visibility, so a failed sync reaches a person rather than a log file
- Reconciliation reporting, proving the systems still agree over time
Want this scoped for your business in London?
Thirty minutes, no charge, no sales script. You leave with a written summary of what system integration would actually involve — whether or not you use us.
Working in London
London
London clients usually come to us because they want senior people actually on their project rather than a large agency's B team, and because Midlands rates buy considerably more delivery per pound.
Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates.
Sectors we work with in London
- Financial Services
- Professional Services
- Technology
- Media
- Hospitality
- Retail
What we work with
Technologies and platforms
- TypeScript
- Python
- PostgreSQL
- Azure
- REST APIs
Who we work with
Industries we serve
- Manufacturing
- Professional services
- Retail
- Logistics
- Healthcare
Why us
Why London businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in London
Looking for the full picture? See our System Integration services, everything we do in London or browse everything we do.
System Integration in London — common questions
- Should syncing be bidirectional?
- Rarely for every field. Two-way sync means deciding what happens when both sides change, and most projects discover that question after a customer record has been overwritten. Choose direction per field — most data has an obvious owner once you ask.
- What is a system of record and why does it matter?
- The system whose version wins for a given data type. Without one agreed, every sync conflict becomes an argument, and the integration quietly encodes whichever answer the developer chose that day.
- Real-time or scheduled?
- Scheduled batches are simpler, cheaper and adequate for most business data — nightly is fine for a great deal of it. Real-time is worth its complexity where a delay has an actual cost, which is less often than it is requested.
- How do we know the integration is still working?
- Alerting on failure, and periodic reconciliation comparing record counts and key values across systems. Integrations fail silently far more often than loudly, and the discovery usually comes from a customer rather than a monitor.
- Do you work with businesses across Greater London?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout London, including London and the surrounding Greater London area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of London businesses do you usually work with?
- Clients here are usually replacing an agency, and want senior people on the work at rates that are not Central London rates. Beyond that we work across Financial Services, Professional Services, Technology, Media, Hospitality and Retail.
- Do you cover the areas around London?
- Yes — we work throughout London, including Reading, Milton Keynes, Cambridge, Brighton. London is an urban area of roughly 9,000,000+, and we take on work across the wider Greater London region rather than the city boundary alone.
Talk to us about System Integration in London
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise