01 Web and server applications
REST APIs, admin interfaces, integrations with third-party systems. From a single endpoint to a platform of dozens of services running on Kubernetes.
custom software · since 2013
We build software that can actually be run.
Applications, websites, server and database systems, automation and image processing. A small team, long projects, things that went into production — not slide decks about how it could be done.
$ sourcepaint --stack
backend Kotlin · Quarkus · Java 21 · Node.js · Python
frontend Vue 3 · Vite · TypeScript · Astro · WebGL
data PostgreSQL · Flyway · Kafka · VictoriaMetrics
ops Docker · Kubernetes · GitLab CI · Ansible · nginx
ml TensorFlow · local LLM · backtest harness
$ sourcepaint --principles
# git is the source of truth, not a click-through admin panel
# versioned migrations, deploys from a pipeline — never from a laptop
# what gets measured gets better — metrics and alerts from day oneWhat we do
Six areas with both delivered projects and systems we run ourselves. The full technology list is on its own page.
02 Data and databases
Schema design, versioned migrations, reporting. We treat the database as the source of truth — not as a store that quietly rots over time.
03 Automation and image processing
Batch pipelines over photos and video, document generation, conversions, derivatives. If a human does it by hand twice, it belongs in a script.
04 Operations, infrastructure, CI/CD
Deployment is part of the design, not the last step. Containers, Kubernetes, pipelines, certificates, monitoring and alerts — built so that somebody else can run them too.
05 3D, stereo and graphics
WebGL viewers, stereoscopy (anaglyph, side-by-side, cross-eye), aligning image series around a rotating object, lenticular printing.
06 Machine learning and LLMs
Models where they earn their place: text classification with a local LLM, predictions over time series, backtesting and evaluation instead of gut feeling.
Our own product
Subscriber Pilot
A ready-made email funnel engine: double opt-in sign-up, drip sequences, time-fading discounts, booking against a real calendar, and payment. One build, many brands — each with its own copy, domain and database.
Product page →Projects and references
From the architecture of a twenty-five-service platform on Kubernetes through an e-shop and LDAP-backed SSO to an automated photo processing system.
See the projects →Not sure where to start? The first stage is usually small and self-contained — a design and a prototype that shows whether it makes sense to carry on. How we work →