Staff Mojo Tooling Engineer

Modular

. Drive development of the Mojo LLDB-based debugger from an experimental project to a mature debugger .

Posted 11/11/2026full-timeRemote • United States, Canada, United KingdomLead💰 $180,000 - $270,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing debugging tools and enhancing developer productivity through innovative solutions. Proficient in programming languages such as Python, Mojo, Rust, or C++, with a strong understanding of the LLVM ecosystem and experience in community engagement.

Highest-signal resume keywords

Mojo Debugger DevelopmentLLDB ExperienceProgramming Language ProficiencyDeveloper Relations EngagementKnowledge of Debuggers and Compilers

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringDebuggingSystems ProgrammingExpression EvaluationIDE IntegrationGPU DebuggingProfiling SupportSDK ContributionsDevelopment Tools ImprovementLinkers Knowledge

Soft Skills

CollaborationCommunity EngagementPragmatic Prioritization

Tools & Technologies

MojoLLVM EcosystemLLDBDebugging Tools

Industry Keywords

Developer ProductivityInteractive DebuggingOpen-Source ContributionsEngineering DegreeInformation Systems

Tech Stack

Tools & technologies

PythonRustC++

About the role

Key responsibilities & impact

Drive development of the Mojo LLDB-based debugger from an experimental project to a mature debugger
Work on interactive debugging, IDE integration, debug information formats, expression evaluation, and other debugging experiences
Develop potential future features including GPU debugging, agentic debugging, debugger MCP, and profiling support
Define the Mojo debugger and overall tooling roadmap
Collaborate with developer relations and the Mojo compiler team
Engage with the Mojo developer community, discuss features, capture use cases, and direct open-source contributors

Requirements

What you’ll need

Contributions to SDK and dev tools for a major programming language
Track record of improving developer productivity with tools
Bachelor's degree in Engineering, Information Systems, Computer Engineering, Electrical Engineering, Computer Science, or related field and 2+ years of Software Engineering or related work experience; OR Master's degree in a related field and 1+ year of Software Engineering or related work experience; OR PhD in a related field
1+ year of academic or work experience with a programming language such as Python, Mojo, Rust, or C++
Experience with community or developer relations teams is a strong plus
Past experience working on LLDB is a strong plus
Exposure to the LLVM ecosystem is a strong plus
Understanding of developer experience and pragmatic prioritization
Willingness to dive deep into systems programming
Knowledge of debuggers, linkers, compilers, and other development tools
Candidates based in the US, Canada, and UK are welcome to apply
All new hires complete onboarding in person
Traveling 2–4 times a year is expected for all roles

Benefits

Comp & perks

Comprehensive healthcare coverage
Retirement and savings programs
Employee stock purchase opportunities
Paid time off
Wellbeing resources
Family support programs
Learning and development opportunities
RSU grants
Regular team onsites and local meetups
Relocation assistance available for eligible candidates
Remote and in-office flexibility for senior engineers