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    Senior Software Engineer, Agentic Harness Quality and Performance

    Goodnotes
    London•Paddington
    Remote
    Senior
    Full Time
    AI-native productquality engineeringagentic harnesscoding agentsstatic analysissenior software engineeron-site roleLondon Paddington

    Requirements

    • •5+ years in software or quality engineering including quality frameworks, platforms, or harnesses
    • •Experience building agentic workflows beyond chat
    • •In-depth knowledge of static analysis including custom lint rules and dependency rules
    • •Experience designing pre-commit and CI flows with fast and slow checks
    • •Proficiency in at least one of Swift, TypeScript, Rust, Go, or Java
    • •Ability to write scripts and small systems quickly
    • •Experience making teams self-serve with tools that others adopt and extend
    • •Ability to judge 'good enough' to avoid overwhelming teams or agents
    • •Strong collaboration skills with engineers, designers, and product teams
    • •Ability to set own agenda, act proactively, and handle ambiguity and conflict

    What You'll Do

    • •Design, build, test, ship, and operate software products
    • •Set up and lead the quality practice for the engineering team
    • •Build the agentic harness, guides, and automated checks around coding agents
    • •Teach engineers to extend and use the quality harness
    • •Design guides and automated checks to steer coding agents before and after actions
    • •Track and report on the effectiveness of quality checks
    • •Implement fast feedback loops with deterministic checks at various stages (agent session, pre-commit, CI)
    • •Study defect classes and design protections against defects
    • •Partner with squads to find defects before release using AI-native approaches
    • •Support quality practices across multiple platforms (iOS, Android, Mac, Windows, web, backend)
    • •Enable engineers to build and tune their own quality checks

    Nice to Have

    • •Experience building LLM-as-judge checks or evaluation suites for AI product output
    • •Experience writing architecture fitness functions for performance, security, or observability
    • •Knowledge of web, desktop, or mobile test tools, especially iOS and Android
    • •Experience working on full-cycle teams and operating what was built

    Benefits

    • •Customized growth and wellness budgets including stipends for headphones, training, personal development, and health activities
    • •Global connectivity with sponsored visits to office locations for face-to-face collaboration
    • •Company-wide offsites once a year for team celebration and alignment
    • •Comprehensive health coverage including premium medical insurance for employee and dependent
    • •24 remote working days per year for flexible work location

    About Goodnotes

    Goodnotes turns complexity into clarity. Goodnotes 6 - Notes Reimagined.

    London, UK
    250 - 500
    Productivity