Who is Oguzhan Coskun?

Oguzhan Coskun (Oğuzhan Coşkun) is an AWS Certified Solutions Architect and the founder of nsource limited, a London-based boutique cloud and DevOps consultancy. He has over a decade of production experience (since 2014) across fintech, travel, and high-traffic consumer platforms.

What does nsource limited do?

nsource limited designs and automates cloud platforms on AWS — infrastructure as code (Terraform, CloudFormation, CDK), Kubernetes, CI/CD, observability, security and compliance, and cost optimisation — for organisations that need production-grade reliability and audit-ready controls.

What industries does nsource work in?

Primarily fintech and regulated financial services, travel tech, and e-commerce / high-traffic consumer platforms — including PCI-DSS environments and hybrid cloud plus bare-metal estates.

Is nsource AWS certified?

Yes. nsource is led by an AWS Certified Solutions Architect and is an AWS Partner (Technical Accredited). Credentials are verifiable on Credly.

Where is nsource based and when was it founded?

nsource limited is based in London, UK, and was founded in 2019 (UK company number 12085218). It serves clients worldwide.

Cloud & DevOps

Infrastructure you can run in production

nsource is the boutique cloud practice of Oguzhan Coskun — an AWS-certified solutions architect based in London. I design and automate cloud platforms — IaC, Kubernetes, pipelines, security, and cost guardrails — so your organisation ships reliably, not on hope.

What you get: clearer runbooks, measurable cost and observability improvements, and platforms that stay compliant under audit — not slide-deck fiction.

Fintech · E-commerce · travel · regulated workloads · hybrid & multi-cloud

Why us About Read the blueprint

Proof

Why teams work with us

A few specifics — still no client logos — so you can see what “production-grade” means in practice.

Where we fit

High-transaction and regulated environments, Kubernetes estates at real scale, and organisations that need PCI-style rigour without freezing delivery.

Outcomes we drive

Stronger automation and guardrails, observability you can afford at scale, and cost work that shows up in the bill — not only in a roadmap deck.

Beyond delivery

Hands-on training (Python, Java, DevOps), long-form writing on Medium, open-source field guides (e.g. ubernodes, Kubernetes-native crypto-node operations), and public dialogue (e.g. AI Data Press on Kubernetes & AI-era infrastructure).

In the field

We keep learning where practitioners gather — e.g. AWS re:Invent and KubeCon — so recommendations reflect what ships today, not last year’s blog defaults.

Selected results — anonymised

~80% lower observability cost — re-architected a managed Prometheus service to self-hosted across 30+ EKS clusters, same SLA.
~70% network cost cut in high-traffic Kubernetes via prefix delegation and pod/subnet placement.
7 consecutive PCI-DSS audits passed — zero downtime, regulated financial-services workloads.
250k+ requests absorbed in under 30 minutes with zero downtime during an unannounced traffic surge.

Verified peer reviews

Independent, validated practitioner reviews on PeerSpot — written from production use, not marketing.

Jenkins on Hardened Ubuntu — automated weekly Ubuntu image hardening (Ansible + AMI pipeline) across 50+ CI/CD projects on AWS. Rated 10/10.
Isovalent (Cilium) — eBPF networking, security and Hubble observability for high-traffic finance Kubernetes. Rated 9/10.

Full blueprint (principles & layers) →

About

Who you’ll work with

Oguzhan Coskun — AWS-certified solutions architect, nsource limited

I’m Oguzhan Coskun, an AWS Certified Solutions Architect and cloud-native specialist with deep experience in enterprise-grade infrastructure. I combine strong engineering with practical judgment — modern AWS, Kubernetes, AI-assisted delivery where it helps, and architectures that stay understandable under audit and on-call. When an engagement needs more hands, I bring in a small circle of trusted senior specialists I’ve worked with for years.

Over a decade in production — since 2014 — across fintech, travel, and high-traffic consumer platforms, from regulated PCI-DSS estates to hybrid cloud and bare metal, plus bespoke application and WordPress work earlier in my career.

Certifications

AWS Certified Solutions Architect

AWS Partner Technical Accredited

All credentials on Credly →

Services

What we do

We don’t sell a six-box service menu.

Every cloud shop lists the same boxes — IaC, CI/CD, security, FinOps. What you actually hire is judgment that has already been to production: patterns that survived real incidents, real audits, and real bills — including the failure modes nobody writes down.

It stays current because we run today’s systems and compare notes where practitioners gather — re:Invent, KubeCon — not last year’s blog defaults. We call it battle-tested know-how, and we put it in the open: our ubernodes field guide and long-form writing are the same knowledge we bring to your platform.

IaCCI/CDKubernetesPlatform engineeringSecurity & complianceFinOpsLegacy migrationObservabilityTraining

See the blueprint ubernodes on GitHub

Writing

Latest insights

Articles on AWS, DevOps, Kubernetes, cost, and platform engineering — published on Medium.

Primary channel: insights.nsource.io — always available even if the feed below does not load in your browser.

Read on Medium All articles Blueprint

Contact

Let’s collaborate

Book a short call to talk about your cloud challenges, architecture, and how I can help.

Schedule a consultation Download CV (PDF)

nsource limited is a UK private limited company (Company No. 12085218), founded 2019.

HQ
London, UK
Email
[email protected]
Links
- LinkedIn
- GitHub
- Medium