Job Title

Software Engineer IDE & DevTools (AI-Powered) Toronto (Hybrid) Are you passionate about building developer tools that empower engineers? Do you want to work on the cutting edge of AI, language tooling, and semiconductor design? Were hiring a hands-on Software Engineer to join the founding engineering team of an AI-native SaaS startup revolutionizing semiconductor design. Youll help build an intelligent, high-performance Integrated Development Environment (IDE) that transforms how semiconductor engineers write, navigate, and refactor code. What Youll Build A modular, extensible IDE using Monaco (VS Code), Tree-sitter, Language Server Protocol (LSP), and AST-based analysis Intelligent features like autocomplete, go-to-definition, inline docs, and context-aware suggestions LLM-powered capabilities including inline completions, chat, code transformation, and summarization Plugin and extension systems, file/project awareness, and editor performance optimization Core Responsibilities Architect and implement advanced code editor and tooling features Collaborate with AI/ML and backend teams to integrate large language models into developer workflows Optimize editor performance through smart diffing, incremental parsing, caching, and multithreading Design and maintain plugin systems and developer extension frameworks What Were Looking For 4+ years developing developer tools, IDEs, language tooling, or related software Strong hands-on experience in TypeScript, Python, Go, or C++ Deep familiarity with editor architectures, especially Monaco, Tree-sitter, or similar frameworks Experience with Language Server Protocol (LSP), AST parsing, and semantic code navigation Built or maintained plugin/extension systems, command registries, or similar Solid understanding of developer workflows, version control, and extensibility Bonus Points Experience integrating LLMs (OpenAI, Claude, DeepSeek, etc.) into developer workflows Knowledge of embeddings, token caching, or AI-powered code refactoring Open-source contributions to IDEs, devtools, or language tooling Quick Fit Questions (Please consider before applying) Have you built or contributed to IDEs or extensions (e.g., VS Code plugins)? Have you contributed to any open-source projects? Are you proficient in TypeScript, Python, Go, or C++? Do you understand how editors like Monaco or Tree-sitter work under the hood? Have you worked with LSP, AST parsing, or developer code navigation tools? Have you built plugin or command registry systems? If you answered yes to most, we want to hear from you! Why Join? Be a founding engineer in a fast-growing AI SaaS startup shaping semiconductor design Work directly with the VP of Software and collaborate with Silicon Valley HQ Influence product and team strategy with leadership growth potential Competitive salary + early equity in a high-impact startup Flexible hybrid work environment with a low-ego, high-trust culture Interested? Send me a message or apply directly below. Tag someone who would be perfect for this! #SoftwareEngineer #IDE #DevTools #AI #LLM #TorontoTech #Hiring #EngineeringLeadership #DeveloperTools #Startups Apply: [email protected] | 416-833-3533 For more jobs check us here: https://www.linkedin.com/company/talenttohire #J-18808-Ljbffr