# Vetting developers Lemon.io, a vetted developer marketplace, uses a rigorous multi-stage vetting process to ensure only top senior engineers make it onto the platform — only 1.2% of total applicants are accepted. Vetted developers' profile browsing on Lemon.io. *The vetting process includes:* ### Profile & experience review Every application starts with a detailed review of the engineer’s resume, LinkedIn profile, and portfolio, including an identity and consistency check. Only senior developers with proven commercial experience advance to the next stage. ### Soft skills & English proficiency Candidates go through a structured pre-screening covering motivation, availability, work style, startup fit, and English fluency. This is followed by a live 20-minute call with a Lemon.io recruiter to confirm fit and discuss next steps. Candidates who prefer a fully human-led process can opt out of automated pre-screening and speak directly with the recruiting team. ### Technical pre-screening Before the full technical interview, candidates complete a role-specific assessment covering both multiple-choice and open-ended questions tailored to their tech stack. Results are reviewed by the recruiting team, who can override automated outcomes when context requires it. ### Technical interview The tech interview at Lemon.io is conducted by a senior engineer or CTO from the Lemon.io community and includes real-world problem-solving, non-Googleable questions, live coding, debugging, and [AI tools fluency](https://lemon.io/blog/ai-engineer-requirements/). The tech interview covers: * **Experience.** How and why candidates used specific tools, and how they handled real-world challenges (legacy code, performance issues, team collaboration). ***Example:*** What’s the most difficult part of a monolith-to-microservices migration you’ve led: what broke first, and what would you do differently now? * **Theory.** Specific questions to confirm genuine knowledge versus memorized answers. ***Example:*** The given function passes tests now — how will it break if the load increases 100x? Let’s walk through the memory and CPU implications. * **Practice challenge.** System design, live coding, code review, bug fixing, or algorithm analysis. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.lemon.io/vetting-developers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.