Freelance software engineer · web · iOS · Android
I design the architecture, build the backend, web, and mobile app, and take the product through release. I work directly with companies and founders who need an experienced developer able to own the entire technical side of the product.
You have an idea, a prototype, or a process you want to turn into a working product. I design a sensible first version and build the application from the backend through the user interface.
Web applications · mobile applications · SaaS · client portals
Your current solution is no longer enough, or it relies on technology that is holding you back. I design a gradual modernization or a complete rebuild without unnecessary risk.
Technical audit · new architecture · data migration · modernization
I build backends, APIs, and data integrations for products that need to communicate reliably with other systems.
Ruby on Rails · Python · PostgreSQL · REST · GraphQL · external services
A complete rebuild of the original digital product: a new backend, web application, and mobile apps for iOS and Android. I am responsible for the architecture, development, infrastructure, and release.
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An independent SaaS product for planning, pedagogical observations, evaluation, and working with the Czech curriculum framework. I designed and built the backend, web app, mobile app, and production infrastructure.
Visit neposedi.czI am Jarka Košanová, a software engineer with more than 15 years of experience. I spent nine years at GitLab, progressing from backend engineer to Staff Engineer and leading a team as an Engineering Manager for one year.
I designed complex enterprise features, permissions, and integrations. Today I build complete web and mobile products — from the data model and backend through the user interface, release, and operations.
I work personally, without agency layers or handing the work off.
„Jarka has a pragmatic approach, takes ownership, and consistently delivers high-quality work on time.“
„She understood the complexity of the whole system and solved some of our hardest technical problems.“
„She has the technical ability and persistence to take a demanding project through to a successful finish.“
We discuss the users, the business goal, the current state, and what the application really needs to solve.
I prepare the technical design, split the development into meaningful parts, and set a realistic scope for the first version.
I work in small steps and deploy regularly. You see the result as it takes shape, not for the first time right before release.
I take care of production operations, monitoring, and mobile app releases. After launch, we can continue with development or support.
