Software Engineer- IDE & Dev Tools

Job Description

Job Description

Job Description

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?

We’re hiring a hands-on Software Engineer to join the founding engineering team of an AI-native SaaS startup revolutionizing semiconductor design. You’ll help build an intelligent, high-performance Integrated Development Environment (IDE) that transforms how semiconductor engineers write, navigate, and refactor code.

• 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

• 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

• 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

• 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

1. Have you built or contributed to IDEs or extensions (e.g., VS Code plugins)?

2. Have you contributed to any open-source projects?

3. Are you proficient in TypeScript, Python, Go, or C++?

4. Do you understand how editors like Monaco or Tree-sitter work under the hood?

5. Have you worked with LSP, AST parsing, or developer code navigation tools?

6. Have you built plugin or command registry systems?

7. Have you integrated AI/LLM tooling into developer platforms?

If you answered yes to most, we want to hear from you!

• 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!

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Apply: sasha@talenttohire.com | 416-833-3533

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