MongoDB Consulting · London
MongoDB Consulting in London
MongoDB advice for London organisations, starting from a correction that saves a great deal of trouble. There is always a schema — the question is only whether it is written down in the database or held implicitly in application code, and a collection where five shapes coexist has a schema that nobody has agreed and everyone must handle.
Why this comes up
The problem
Documents written over four years have five different shapes, and every read path defends against all of them.
What you get
What we deliver
- The implicit schema documented, so what actually exists is known
- Historic document shapes reconciled or migrated rather than handled forever in code
- Validation introduced to prevent further divergence
- Index coverage reviewed against the queries running in production
- Aggregation performance examined, since complex pipelines are easy to write badly
- An honest view on whether a relational database would suit the workload better
Want this scoped for your business in London?
Thirty minutes, no charge, no sales script. You leave with a written summary of what mongodb consulting 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
- MongoDB
- Atlas
- Node.js
- Python
Who we work with
Industries we serve
- SaaS businesses
- Media companies
- Retail
- Technology companies
- Startups
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 MongoDB Consulting services, everything we do in London or browse everything we do.
MongoDB Consulting in London — common questions
- Is schema flexibility a problem?
- Only when it is unmanaged. Being able to add a field without a migration is genuinely useful; ending up with several document generations that every query must accommodate is a cost paid on every read path, by every developer, indefinitely.
- How do we fix divergent documents?
- Establish what shapes exist, then either migrate them to one or accept a small number deliberately with validation preventing more. The alternative — defensive handling in application code — spreads the problem across the codebase rather than solving it.
- What causes slow queries here?
- Usually a missing index or an aggregation doing work the database cannot optimise. Reviewing what production actually runs, rather than what the code appears to run, is the fastest route to the small number of operations responsible for most of the load.
- Would a relational database be better?
- Sometimes, and it is worth asking honestly. Highly relational data with many joins and strong consistency requirements is what relational databases are for, and a document store chosen for flexibility can end up reimplementing joins in application code.
- 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 MongoDB Consulting 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