Eric Zakariasson is a Swedish software engineer, startup co-founder, and former Cursor builder developing a practical approach to agent-first software development. His central concern is how autonomous coding systems can produce reliable software while engineers retain responsibility for architecture, security, and product decisions.
From product engineering to software factories
Zakariasson worked in frontend engineering at Jetshop and full-stack development at Bokio before becoming a technical lead at Mindler. He subsequently worked as a senior software engineer and technical lead at anotherblock, co-founded Skyffel, and joined Cursor in a product-engineering and developer-experience role.
At Cursor, he developed an approach to building a software factory in which coding agents implement, test, review, and refine software under human supervision. An agent-built music-production application illustrated his method: reproducible development environments, Playwright browser tests, and recorded interactions allowed software to be evaluated through observable behavior. Separate virtual machines enabled parallel work without collisions between databases, services, or branches.
Principles for dependable autonomy
Agent-ready environments need foundations, guardrails, and enablers. Modular code, familiar project structures, and reusable patterns help agents navigate a codebase; tests and restrictions protect sensitive systems; integrations and runnable environments give agents enough context to operate independently. Zakariasson organizes these requirements into a practical development-environment framework.
Verification determines when agents can work independently. In Human in the /loop, he describes assigning measurable completion criteria, including passing tests, improved evaluations, verified interfaces, performance thresholds, and clean data. Explicit stopping conditions and human escalation prevent long-running agents from becoming unaccountable.
Rules should encode real mistakes. He favors continual learning from agent workflows: extracting recurring corrections and code-review feedback into durable guidance instead of accumulating generic instructions. Risk-sensitive review can route consequential changes to experienced humans while allowing routine work to proceed.
Agent capabilities need deliberate boundaries. His pg-mcp-server connects PostgreSQL to the Model Context Protocol with writes disabled by default, while uber-eats-mcp-server explores browser-driven integrations. His scandinavian-design project packages visual-design constraints as an agent skill.
Zakariasson favors composable software primitives and expects engineers to concentrate increasingly on defining intent, preserving architectural knowledge, and reviewing security-critical decisions. For experimental interfaces, he treats prototypes as expressions of product intent—not production systems that must inherit accidental technical choices.
