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Independent consultant · Solopreneur

Hi, I'm Lars Barkman.

I bring clarity to complex digital solutions and the organizations behind them — and help both work in practice.

As a solution architect, enterprise architect, and engineering manager, I connect solution design, team capabilities, and how the organization operates. Sometimes that means changing the design; sometimes it means helping the team learn, adapt, or grow.

Twenty years across insurance and pensions, shipping, manufacturing, energy, and enterprise software.

Outside client work, I’m building i26g, a self-hosted platform for independent systematic trading.

Get in touch See consulting

Writings

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Notes on organizations, technology, and the full lifecycle of digital solutions — from tactical detail to strategic perspective.

Nov 11, 2026i26gsolution-designsolopreneurship
The Interface Between i26g and Your Infrastructure
How the i26g Control Plane creates VMs, networks, storage, and DNS inside its boundary: a small, published interface with an adapter per provider, built from OpenTofu modules — rather than a facade service standing between the platform and your infrastructure.
Nov 11, 2026i26gsolution-designsolopreneurship
One Pattern for Every Integration
Why every external dependency of i26g — infrastructure, brokers, and data sources — goes through the same adapter pattern: a published interface, conformance tests, versioned sets, and versions you pin — with stricter rules where failure costs more.
Nov 10, 2026i26gsolution-designsolopreneurship
Why i26g Runs on VMs, Not Kubernetes
Why the i26g Application uses virtual machines as its infrastructure primitive rather than a Kubernetes cluster — from someone who has designed Kubernetes platforms, and chose not to build on one here.

Consulting

Solution architecture, enterprise architecture, and engineering management: stepping into the seat, making the decisions, and staying hands-on until the work holds without me.

Solution Architect
Clear technical direction. Practical architecture. Hands-on support through delivery.
Enterprise Architect
Clear ownership. Clear decision authority. An operating model that supports delivery.
Engineering Manager
Steady leadership for your engineers. A team structure that fits the work. Delivery that improves.

Ventures

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Where I build: i26g, independent systematic trading, worked as knowledge, tooling, and services — the i26g Handbook, the i26g Application, the control plane that runs it, and the adapters that connect it.

i26g Handbook
The knowledge around independent systematic trading — data, research, testing, sizing, risk, and operations — with a practical model for organising it at its core. Methods and engineering, never trade recommendations.
i26g Application
The components that together cover the complete chain required to trade — data ingestion, research and backtesting, strategy runtime, execution, risk, and the human interface — as one self-hosted system you deploy and operate on infrastructure you control. In development, not yet public.
i26g Control Plane
Being developed to validate, release, deploy, operate, and retire versions of the i26g Application, and to manage its VMs, networks, and volumes within a boundary the infrastructure owner defines — reconciled from Git, with trading-aware health checks. In early development.
i26g Custom Development
Extending an i26g deployment when the standard tooling does not cover a specific requirement — hands-on work on the i26g Application, the i26g Control Plane, or their adapters. Offered to early deployments while the tooling is in development.

© 2026 • Lars Barkman