DevArch
Taking projects for Q3
Available2 slots open · Q3 2026

Software
architecture for ambitious teams.

We design, build and ship complex web apps, AI automation and technical systems for founders and product teams who need to move fast without breaking things later.

47 products shipped
for YC, Stripe-ecosystem & EU scale-ups
4.9/ Clutch
system.architecture.devarch
ClientNext.js · React NativeEdgeVercel · CloudflareAI LayerLLM · Vector · RAGAPItRPC · GraphQLCoreServices · QueueDataPostgres · Redis · S3p95 latency87 ms▲ 2.1×
Trusted by teams
at every stage
lumen
▲ HARBOR
Fieldnote.
NORDIC
orbit
kestrel/
What we do

A studio built around hard problems — architecture, AI, and everything that keeps them shipping.

Six disciplines, one team. We staff every project with the right mix — architect, engineers, PM — and keep it stable until you no longer need us.

Architecture

System architecture & audits

We analyze your codebase and business needs, then deliver actionable roadmaps — so you prioritize the right things, in the right order.

  • Technical due diligence
  • Scaling playbooks
  • Migration plans
Learn more
AI

AI automation

LLM integrations, RAG pipelines and AI agents, built for production — not demos.

Learn more
Web

Web applications

Next.js, React and TypeScript for teams that care about performance and DX.

Learn more
Mobile

Mobile apps

Cross-platform with React Native and Flutter. One team, two stores.

Learn more
Platform

Backend & DevOps

APIs, infrastructure, CI/CD. AWS, GCP and Azure — whichever fits your team.

Learn more
Security

Security & compliance

SOC 2, GDPR, HIPAA — we harden what we build. Threat modelling and penetration tests included in every build.

  • Threat modelling
  • SOC 2 readiness
  • Secure SDLC
Learn more
Selected work

Four recent projects.
Forty-three more in the archive.

Full case study archive
01
Lumen Health
Patient triage platform with AI intake
HealthcareAIMobile
OUTCOME
6.8× faster intake
02
Harbor Logistics
Real-time fleet operations, rebuilt on event-sourcing
LogisticsPlatform
OUTCOME
$2.1M / yr saved
03
Fieldnote
Agentic research assistant for B2B analysts
SaaSAI
OUTCOME
4.9 / 5 rating
04
Nordic Bank
Core banking modernisation — 38 legacy services retired
FinanceArchitecture
OUTCOME
99.99% uptime
47
products shipped
since 2019
14d
to first ship
median
99.99%
uptime
production avg.
4.9
Clutch rating
38 reviews
How we do it

A predictable process,
so the work isn't.

Every project runs on the same three phases. The work inside is different every time — the way we run it isn't.

01
Week 0

Diagnose

Deep audit of your product, code and team. We map technical debt, quick wins and the real shape of the problem.

  • Codebase review
  • Stakeholder interviews
  • Prioritised roadmap
02
Weeks 1–12

Design & build

Small senior team, two-week sprints, shipping every Friday. Architecture decisions documented as ADRs so the knowledge stays when we leave.

  • Architecture Decision Records
  • Continuous delivery
  • Weekly demos
03
Ongoing

Hand off

We transfer to your team with pairing sessions, runbooks and incident playbooks. Follow-up retainer optional, never required.

  • Runbooks & docs
  • Pair programming
  • Retainer support
Real stories from real customers

The work speaks. The people we worked with speak louder.

DevArch rebuilt the engine of our platform while we kept flying it. Zero downtime migration, clearer architecture, and a team that actually writes the docs.

MK
Marta Kallas
CTO, Harbor Logistics

They delivered in 10 weeks what our last agency scoped at 9 months. The difference was scope discipline.

JO
James Okafor
Founder, Fieldnote

The AI intake alone paid for the project in six months. Their senior engineers felt like founding team.

LR
Dr. Lila Ravel
Head of Product, Lumen Health
What can we do for you?

Tell us what you're building.
We'll reply within a day.

Whether you have a scoped project, a rough idea, or just want a second opinion on an architecture — we read every message.

Email
hello@devarch.co
Studio
Tallinn · Estonia
Response
< 24 hours
Projects starting
July 2026
MK
JO
AV
LR
Replies come from the team,
not a sales inbox.
No sales calls. No AI replies.