Cloud Architecture
Reference architectures for AWS and Azure, designed for failure from the first diagram. Network topology, identity — Entra, IAM, OAuth2 — and the cost model, all decided before a line of code.
Learn moreAWS · Azure · C#/.NET
Distributed systems, engineered to hold.
Atinian is a senior engineering consultancy led by a single principal engineer — twenty years of production in finance, energy trading, fintech and cybersecurity. We build event-driven, eventually consistent systems on AWS and Azure, and integrate them with the legacy systems you can't rip out.
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years in production
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sectors, from finance to consumer
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third-party integrations designed & delivered
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major clouds in depth — AWS & Azure
// capabilities
What we do, and do well
A focused practice, not a menu. Every engagement is led by a principal engineer who has shipped the same class of system before.
Distributed Systems
Event-driven, eventually consistent architectures, with event sourcing where the data demands it. We turn scale and partial failure from risks into solved problems — and prove it with rehearsal.
Learn moreMigration & Modernisation
Monoliths to the cloud without the drama. Strangler-fig decoupling, live data migration, dual-run verification and feature-flagged hot switching — with a tested rollback plan for every step.
Learn morePlatform & SRE
Golden paths, full-stack observability with Datadog, Elastic and Application Insights, and a working incident culture — built for teams that ship daily and measure themselves on SLOs.
Learn more// why atinian
Small on purpose. Accountable by default.
We built Atinian because enterprises kept paying for large consultancies and getting staffed by people who had never been paged. So we did the opposite: a firm where the seniority is structural, not contractual.
01 Only senior engineers
No leverage model, no juniors learning on your budget. The person on the call is the person writing the code.
02 No account layer
One principal, no intermediaries. You talk directly to the person doing the work — and that's the person who reads your codebase.
03 We stay for the hard part
Cutover, hypercare and the first incidents are where projects live or die. We stay through all of it, and we measure ourselves on your SLOs.
They decoupled our platform's verticals while we kept shipping daily. Reliability became measurable, the search stack got cheaper, and the team was stronger at the end of it than the start.
// recent work
Engagements, in brief
Client names are withheld under NDA. The problems are real, and the numbers are auditable.
Continuous ingestion, rearchitected
An ISO 27001-certified cybersecurity platform now ingests continuously from hundreds of third-party integrations — each one a first-class, versioned contract.
Extending a trading platform without replatforming
An FTSE-listed energy trader extended a third-party ETRM through a message bus, hardened its OAuth2 estate, and automated the software development lifecycle.
// next step
Tell us what's not scaling.
A thirty-minute call with the principal engineer. No deck, no sales motion — a straight answer on whether we can help, and what it would take.
Book a consultation· we reply within one business day