Jomena Group

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We build the systems others depend on.

Jomena Group is a private engineering and advisory group. We design, build and run software, platforms and infrastructure for companies in any industry, from a first product to systems that move money across borders. Our deepest work is in payments, financial systems and applied AI.

Based in the Nordics. Working with companies across Europe, the Americas and beyond.

What we do

  • Products and platforms

    New products and the platforms under them: web and mobile apps, internal tools, APIs, integrations and developer platforms, from the first version to production.

  • Systems and infrastructure

    Distributed systems, cloud and self-hosted platforms, observability and recovery paths.

  • Applied AI

    Agents and automated loops inside real operations, with results checked before they count.

  • Payments and cross-border settlement

    Bank rails, instant payments, FX and multi-currency settlement between jurisdictions, ISO 20022 and open banking.

  • Digital assets and smart contracts

    Stablecoins, tokenised assets, custody and bridges, with contracts that are tested, audited and accounted for.

  • Ledgers, reconciliation and financial reporting

    Double-entry ledgers, reconciliation, audit trails and the reports finance teams and regulators sign off on.

  • Trading, treasury and liquidity

    Exchange connectivity, order routing, liquidity and treasury automation, from quote to settlement.

  • Risk, compliance and security

    KYC and AML flows, transaction monitoring, access control and data residency designed in from the start.

  • Board and advisory

    A technical voice on your board or advisory board, technical due diligence for investors, and interim technical leadership while a company scales.

  • An external technical team

    Senior engineers who join your team, or a team of ours that owns a system end to end, working as your technical department for as long as you need one.

AI and automation

We build AI agents and automated loops that carry work from start to finish. They gather data, convert it, give it structure, run the task and check the result before it counts. The repetitive work moves off people's desks, and its errors go with it. A process that ran by hand becomes a defined system, at a scale that was not practical before.

We build them for voice, finance, software development, animation and more. A person still approves the payment or signs off the report, and a company can start with one process and grow at its own pace.

Principles

  • Every balance can be explained. Every movement of money leaves a record that adds up.
  • Systems fail. We decide how they recover before we decide how they scale.
  • Automation keeps a person in the decision where the consequence is real.
  • Fewer moving parts, proven foundations, and decisions the next team can read.

Platform

Our platform is cell-based infrastructure on our own servers. It runs serverless functions and can host anything from a single page like this one to a complex system. An application on it is made of many small cells, each a small, named piece of code with its own database. We built the layer that runs it across our machines.

  • One owner per cell

    A request wakes a cell on the machine that owns it. Exactly one machine owns a cell at a time and claims it with a conditional write to shared storage. There is no consensus service, membership protocol or control plane in the serving path.

  • Replication and recovery

    Each committed write is copied to one or two other machines and is durable once they hold it. It is then uploaded to shared object storage. If a machine is lost, another takes over its cells and restores them from the log and that storage.

  • Idle cells

    An inactive cell costs almost nothing. Idle cells are evicted from memory, and the next request wakes them.

  • Everything an application needs

    Code that runs when it is called, databases, file storage, queues, scheduled and multi-step jobs, and websites, all set up from one configuration file.

Contact

If it is a hard technical problem, in any industry, we want to hear about it.

Write to contact@jomena.group