Fintech API provider in London
A payments API handling several hundred requests per second was outgrowing its Node.js service under peak load; we rewrote the hot path in Go with Gin and cut resource use enough to drop from two VPS instances to one.
Go Development Services in the UK
Programming Services · United Kingdom
Go development services in the UK cover high-throughput microservices, internal APIs, CLIs and event-processing systems, built with Gin, Fiber or gRPC and deployed on VPS or Kubernetes infrastructure we run ourselves. Go's low memory footprint and predictable concurrency model make it the practical choice once a Java or Node service starts costing more to run than it should.
- Gin, Fiber and gRPC services built and operated by us
- Deployed on VPS or Kubernetes, sized to real traffic
- Migration support from Java or Node when Go fits better
- VPS 1–8h/month; Kubernetes on dedicated 5–10h/month depending on planIncluded hours
- Frankfurt, in the EUData centres
- EUR, VAT 20% broken out on every invoiceBilling
- English-language supportSupport
01
What we build
We build internal and public-facing APIs in Gin or Fiber, gRPC services for internal communication between microservices, and CLIs or lightweight agents that need to ship as a single static binary rather than a runtime with dependencies. Go's built-in concurrency model suits event-processing workloads, queue consumers and anything that needs to hold thousands of connections without a proportional jump in memory use.
- REST and gRPC APIs in Gin or Fiber
- Event-processing and queue-consumer services
- CLIs and lightweight agents shipped as single binaries
- Migration of hot-path services from Java or Node
02
Where it runs
Go binaries are small and start fast, which suits both a single VPS running a handful of services behind a reverse proxy and a Kubernetes cluster where pods need to scale in and out quickly under load. We containerise every service with a minimal, non-root image, so the same build runs identically whether it's on one VPS today or split across a cluster once traffic grows.
03
UK context
UK teams typically bring us a Go project once a Node or Java service is becoming expensive to run under load, or once a new API needs to handle a higher connection count than the existing stack can hold comfortably. We run everything in Frankfurt, inside the EU, with a GDPR data processing agreement available for procurement review, and invoices in EUR with UK VAT at 20% shown separately.
04
How the included hours get used
Go clients most often use their monthly hours for performance profiling once a service hits a bottleneck, migrating a hot code path out of Java or Node, adding gRPC contracts between services that previously talked over plain REST, and general testing and hardening before a service goes into production. You request the work from the client panel, and anything beyond the monthly quota is accepted and billed separately rather than queued.
How we work
Request from the panel
You open a request under Programming Services describing the Go service you need and a deadline that fits your release plan.
Scope and timeline
We confirm the framework (Gin, Fiber or plain net/http) and infrastructure, estimate the hours, and tell you what falls outside the monthly quota.
Delivery
We build and test the service against realistic load, containerise it, and deploy it once you've reviewed the result.
Handover
You receive the repository, the Docker or Kubernetes manifests, and a short runbook covering deployment, scaling and rollback.
Use cases
Logistics platform in Birmingham
A delivery-tracking system needed a gRPC service to process location updates from thousands of devices concurrently, replacing a REST polling setup that was struggling under connection load.
Media monitoring tool in Cardiff
A small team building a real-time content-ingestion pipeline needed a Go worker to consume a message queue and write to ClickHouse fast enough to keep dashboards near real time.
Technology stack
- Go
- Gin
- Fiber
- gRPC
- Docker
- Kubernetes
- PostgreSQL
- Redis
- Prometheus
Every subscription includes monthly DevOps, CyberSecurity and Programming hours: 1 h from the cPanel Advanced plan up, 1–8 h on VPS, 5–10 h on dedicated servers depending on the plan, and 10 h on GPU servers. Hours are requested from your client panel, don't roll over to the next month, and anything above the quota is accepted and billed separately.
Frequently asked questions
When does it make sense to rewrite a service in Go?
When a Java or Node service under real load is costing more in memory and CPU than the traffic justifies, or when you need to hold a high number of concurrent connections cheaply. For low-traffic internal tools, a rewrite usually isn't worth the effort.
Where can I host a Go service on 4hosting?
On VPS plans with Docker, or on Kubernetes where the service needs to scale automatically alongside others. Both run in our Frankfurt data centre with root access, so deployment isn't constrained by a managed platform's limits.
Gin or Fiber — which framework do you recommend?
Both are fast and well maintained; Gin has the larger ecosystem and more third-party middleware, Fiber is closer to Express syntax if your team is coming from Node.js. We pick based on your team's familiarity rather than a fixed preference.
Can you help us hire or find Go developers in London?
We don't place developers directly, but our included hours cover ongoing Go development and maintenance, which for many UK teams removes the need to hire a dedicated in-house Go engineer for routine work.
Do you support gRPC between services?
Yes. We define the protobuf contracts, generate the client and server code, and wire the services together, either directly or through a service mesh, depending on how many services need to talk to each other.
Is Go hosting available on a VPS or only Kubernetes?
Both. A single Go binary in a Docker container on a VPS is enough for most services; we move to Kubernetes once you need autoscaling, rolling deploys across several services, or high availability across nodes.
Talk to us about your Go project
Tell us what you're building or what's under strain today. We'll scope the work against your plan's included hours and a realistic delivery date.