Lead Software Engineer (Python API/agentic)

Job Title

Lead Software Engineer (Python API/agentic)

Role Summary

Lead the GUI and core workflow architecture for Quantus Insight, a high-performance parasitic extraction platform. Work with R&D leadership to design scalable, multi-threaded application infrastructure, Qt-based desktop UI components, and integrations that enable AI-assisted workflows.

This role focuses on solving large-scale data and performance challenges in a Linux desktop environment while architecting agentic AI interfaces for application automation.

Experience Level

Senior — experience guidance: 4–6 years of professional software development (4+ years; 5+ years expected with an advanced degree).

Responsibilities

Design, implement, and optimize core engine, workflows, UI, and AI integration for a high-scale desktop EDA application.

• Design high-load dataflows and standardize how large datasets move between backend computation and platform workflows.
• Architect UI-agnostic core structures to optimize data throughput, memory usage, and compute-heavy cycles.
• Implement asynchronous multi-threading and parallel processing to separate heavy background processing from interactive UI threads.
• Compose and orchestrate system functionalities and APIs into AI-native, agentic workflows.
• Expose programmatic interfaces so LLMs can access application state and drive tool operations safely and deterministically.
• Ensure autonomous agent actions are reflected and synchronized in the Qt user interface in real time.
• Develop Qt Widgets-based GUI components (trees, tables, forms) optimized for lazy loading, paging, and low memory overhead.
• Profile and tune application and UI performance in Linux using tools such as GDB and Valgrind.

Requirements

Must-have technical skills and experience required to succeed in this role.

• Expert C++ (modern C++17 or newer) with solid STL usage and idiomatic design.
• High-performance engineering: multi-threading, parallel programming, and data-structure optimization for large datasets.
• Linux development: advanced debugging and profiling using GDB, Valgrind, and related tools.
• Software engineering fundamentals: object-oriented design, design patterns, and full SDLC experience.
• Python scripting for automation and tool integration.
• Ability to profile and tune both backend and UI performance under heavy memory/CPU load.

Nice-to-have:

• Experience with the Qt Framework and Qt Model/View components.
• Domain knowledge in EDA (parasitic extraction, layout connectivity, physical verification).
• Experience building or integrating agentic AI/LLM workflows or strong personal interest and experimentation with LLM APIs.

Education Requirements

Bachelor’s, Master’s, or PhD in Computer Science, Software Engineering, or a related technical field. The posting also notes experience expectations tied to degree level (4+ years experience; typically 5+ years if holding an advanced degree).

About the Company

Company: Cadence Design Systems

Headquarters: San Jose, California, USA

Cadence Design Systems is a global electronic design automation company that provides software, hardware, and intellectual property for designing advanced semiconductor chips. With over 25 years in the industry, Cadence is known for its innovative technology solutions and has been recognized by Fortune Magazine as one of the 100 Best Companies to Work For. The company is dedicated to solving complex technical challenges in order to enable customers to create revolutionary products and experiences.