Sr Software Systems Engineer

Mindlance is a company focused on developing innovative software solutions, and they are seeking a Senior Software Systems Engineer to join their cross-functional team. This role involves building features and shipping products for Yahoo's AI-powered Desktop browser using AI coding tools, with responsibilities spanning across UI components, backend service integrations, and debugging.

Responsibilities:

• Build features, fix bugs, and ship product on the Desktop browser application (macOS/Windows), which is built on top of Chromium
• Use AI coding tools (Claude Code, Codex) to write and maintain high-quality, efficient code — our team does not write code by hand
• Work across layers of the Desktop app — from UI components and browser chrome to backend service integrations — using AI tools to ramp quickly on unfamiliar areas
• Debug and resolve issues related to rendering, networking, and system integration on desktop platforms
• Participate in code reviews as applicable, weekly meetings, daily standups, and weekly demos (Fridays)
• Occasionally work across platform boundaries when needed (e.g., touching backend services or shared code used by other platforms)
• Desktop browser feature development: AI-driven features, custom browser UI, and service integrations
• Performance, stability, and quality improvements across the Desktop app
• Developer tooling, CI/CD, and build system improvements as needed
• Feature velocity — shipping user-facing desktop features within our 1-week cycle cadence
• Effective use of AI coding tools — leveraging agents for implementation, managing multiple agent sessions, and maintaining quality through review
• Ability to ramp quickly on unfamiliar parts of the codebase using AI tools to bridge knowledge gaps
• Quality — PRs pass CI, don't regress existing features, and follow established conventions
• PRs shipped per week
• Stability metrics — crash rates, bug count, CI pass rate on desktop builds
• Peer feedback and ability to unblock other engineers

Requirements:

• 6+ years of professional software engineering experience
• Strong proficiency in at least one systems or application programming language (e.g., Swift, C++, Rust, C#, or similar) — the Desktop app uses Swift (macOS) and C++ but AI tools help bridge language gaps
• Experience building and shipping complex desktop applications on macOS and/or Windows
• Strong problem-solving skills and comfort navigating large, unfamiliar codebases
• Willingness and ability to use AI coding tools (Claude Code) as the primary development method — this is non-negotiable
• 6-10+ years of software engineering with a track record of shipping consumer desktop products
• Prior experience with large-scale desktop apps (browsers, IDEs, media apps, productivity tools, or similar)
• Companies shipping consumer-facing desktop applications
• Companies with fast-moving, small-team cultures (startups, growth-stage, or small teams within larger orgs)
• Engineers who have already adopted AI coding tools in their workflow (Cursor, Copilot, Claude Code, Codex, Windsurf, etc.)
• Self-directed and autonomous — our team runs 1-week cycles with minimal process, no sprint planning or backlog grooming
• Comfortable with AI-first development — must be willing to use AI agents as the primary coding method, not just autocomplete
• Pragmatic and ship-oriented — we demo every Friday, everyone presents
• Collaborative — ideas come from everywhere (engineering, design, product)
• Comfortable with ambiguity and fast iteration — 'ship-to-learn, not plan-to-ship'
• Willing to work outside their comfort zone when needed
• Resourcefulness with AI tools — uses agents to bridge knowledge gaps rather than waiting to become an expert before contributing
• Bias toward action — ship fast, iterate, learn
• Strong communication — reaches out early for clarity rather than spinning in isolation
• Adaptability — can pick up new parts of the codebase quickly and contribute meaningfully