Serverless Development · London
Serverless Development in London
Applications that run without you paying for idle servers. For London businesses with spiky or unpredictable load — seasonal retail, event-driven processing, scheduled jobs — serverless bills for what actually runs and scales through a peak without anyone provisioning anything in advance.
Why this comes up
The problem
A server sized for your busiest hour sits mostly empty the rest of the time, and you pay for that emptiness every month. Sizing it for the average instead means falling over exactly when demand arrives.
What you get
What we deliver
- Functions and managed services replacing always-on infrastructure
- Automatic scaling through peaks with no capacity planning beforehand
- Event-driven processing — queues, uploads, webhooks, scheduled jobs
- Cold-start behaviour measured and mitigated where it affects user-facing paths
- Infrastructure defined as code, so environments are reproducible rather than hand-built
- Cost monitoring with alerts, because serverless bills scale with mistakes as well as traffic
Want this scoped for your business in London?
Thirty minutes, no charge, no sales script. You leave with a written summary of what serverless development 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
- AWS Lambda
- Azure Functions
- Cloudflare Workers
- DynamoDB
- Terraform
- TypeScript
Who we work with
Industries we serve
- Ecommerce
- Media and publishing
- Events and ticketing
- Logistics
- Startups and scale-ups
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 Serverless Development services, everything we do in London or browse everything we do.
Serverless Development in London — common questions
- Is serverless always cheaper?
- No. It wins decisively on spiky and low-volume workloads. At high, steady throughput a reserved server is often cheaper, and we will model both against your actual traffic rather than assuming the newer option is the better one.
- What about cold starts?
- Real, and measurable in the hundreds of milliseconds for a first request after idle. It matters on a user-facing checkout and does not matter on an overnight batch job. Where it matters, it is mitigated deliberately.
- Does this lock us into one cloud provider?
- More than containers do, yes — that is the honest trade for the operational saving. It can be reduced with abstraction, at some cost in complexity, and it is worth deciding consciously rather than discovering at renewal.
- How do we avoid a surprise bill?
- Budgets and alerts from day one. Serverless scales automatically, which means a runaway loop or an unexpected traffic spike scales the bill too. Monitoring is part of the build, not an afterthought.
- 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 Serverless Development 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