Crescentek

Architecture & Infrastructure Support

The architecture decisions that age well.

System design, infrastructure setup, and security planning for agencies building products that need to last. We make the hard decisions early so your clients don't pay for them later.

Based in Ireland
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System architecture — being designed
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The decisions that matter

Four architecture calls that define a project's future.

Most technical debt traces back to four early decisions made without enough information. We slow down at each one.

Build vs buy

When to use a SaaS tool, when to build custom, and when to integrate an existing open-source library. We analyse total cost of ownership, not just build time.

Database selection

Relational, document, or time-series? Managed or self-hosted? The choice is permanent — we make sure the reasoning survives the project.

Compute and scaling

VPS, container orchestration, serverless, or managed PaaS — matched to your traffic patterns, team capability, and cost constraints.

Service boundaries

What belongs in one codebase and what deserves its own service. We document the reasoning so future developers understand the architecture, not just the code.

What we cover

System design, infrastructure, and security.

Three interconnected areas that need to be addressed together — not handed off to three different specialists.

System design
Monolith vs microservices decisions
API-first architecture planning
Database schema design
Caching strategy
Queue and async processing
Infrastructure
Hosting selection and setup
CI/CD pipeline configuration
Docker and containerisation
CDN and performance setup
Disaster recovery planning
Security & compliance
GDPR technical requirements
SSL and HTTPS configuration
Secret management
Access control and IAM
Dependency vulnerability audit
Common questions

Architecture and infrastructure questions answered.

The questions Irish SMBs ask us most often.

Before writing a line of code. Architecture decisions made early are cheap to change; the same decisions made after 3 months of development are expensive. The ideal time is during scoping — when you understand what you're building but haven't committed to how.
Yes. This is a common situation — a system that worked fine at launch but hasn't aged well. We audit the current architecture, identify the highest-pain areas, and produce a prioritised improvement roadmap. Not everything needs rebuilding; most systems have specific bottlenecks worth addressing first.
Typically: monitoring setup and review, dependency updates, security patch management, performance benchmarking, and being available to advise when the team is making infrastructure decisions. It's not hands-on server management — it's technical oversight.
Yes, this is the most common profile. Strong application developers often find infrastructure and devops unfamiliar territory. We work alongside your team, explaining decisions as we go, so they build capability rather than just deferring everything to us.
Both. We work with whatever your client is already using where practical. Where there's a genuine case for changing provider — cost, performance, support quality — we make the recommendation with documented reasoning and handle the migration.
Yes. A structured architecture review is a common starting point — we produce a written assessment of the current system, identify risks and debt, and recommend a prioritised set of improvements. Some clients stop there; others use it as a roadmap for ongoing work.

Building something that needs to last?

Send us your brief and we'll tell you where the architecture risks are before you commit to a direction.

Reply within 1 working day GDPR compliant Based in Ireland