{"schemaVersion":"jobsearcher.job.v1","id":"61ce642a93ecd96fffa6d40e","url":"https://jobsearcher.com/jobs/61ce642a93ecd96fffa6d40e","canonicalUrl":"https://jobsearcher.com/jobs/61ce642a93ecd96fffa6d40e","title":"Senior Software Engineer II, AI Developer Foundations","description":"Senior Software Engineer II, AI Developer Foundations\nUnited States\nAbout Us\nAt SimplePractice, we are improving access to quality care by equipping health and wellness clinicians with all the tools they need to thrive in private practice.\nMore than 260k providers trust SimplePractice to build their business through our industry-leading software with powerful tools that simplify every part of practice management. From admin work to clinical care, our suite of innovative solutions work together to reduce administrative burden, empowering solo and small group practitioners to thrive alongside their clients.\nAward-winning and people-first, SimplePractice is shaping the future of health tech. Recognized by MedTech Breakthrough, the Digital Health Awards, and BuiltIn's Best Places to Work.\nOur Culture\nAt SimplePractice, culture is our foundation. It influences the way we work, how we serve our customers, and how we approach accomplishing our mission. We have five core values that we strive to embody every day:\nWe think big\nWe take simplicity seriously\nWe come as we are\nWe act with humility\nWe are built on trust\nCulture is everyone's responsibility at SimplePractice. Our culture is what drives us to do better for our teammates and customers.\nConnection and collaboration are also key to our success. You will work with our talented multi-national teams and have opportunities to participate in onsites in both the US and Mexico.\nThe Role\nEngineers on the AI Developer Foundations will build the tools that build the product. It's a new team that owns how AI gets used inside engineering, product, and design at SimplePractice: the conventions for using these tools, the context agents read before they touch our code, the bar generated work has to clear before a human spends time on it, and the training that makes AI a useful tool to all of engineering.\nThis is a hands-on role reporting to the VP of Technology. You'll write code most days, mostly in and around a large Rails monolith, and you'll also write the conventions other engineers follow.\nResponsibilities\nOwn the context layer agents read: rules files, docs conventions, grounding data, with CI and named owners keeping it current\nPublish the standards for how we prompt coding agents, how we supply context, and what a spec needs to contain before it's worth handing to an agent\nDefine the review gates any AI-generated artifact clears before a human spends time on it, and get what reviewers catch flowing back into the conventions\nTake the prototypes running today and turn the ones that hold up into supported workflows that run for someone other than their author\nEvaluate harnesses, models and vendors against criteria and eval sets\nWork the product-to-engineering handoff with PMs, designers and EMs\nTeach. Documentation, worked examples, office hours, and time sitting with a squad while they work with the tools we build\nHelp us draw the boundaries for where an agent runs unattended, where a human signs off, and where we don't use one at all\nDesired Skills & Experience\nEducation & Experience\nBS/MS in Engineering, Computer Science, or related field, or equivalent experience\n7+ years building production software and then maintaining it. You’ve shipped something, lived with the decisions, and found out whether a design decision held up\nStrong problem-solving and communication skills; comfortable in fast-paced, cross-functional environments\nRuby on Rails\nRecent, direct Rails experience in a large codebase.\nAbility to read unfamiliar application code quickly and judge whether what an agent produced in it is any good\nAI-Assisted Engineering\nLLM-backed systems you've shipped to users and kept running, past the point where better prompting stops helping\nExperience building context or memory handling, and writing evals\nJudgment about what belongs in code and what belongs in the model\nTrack record evaluating tools with evidence\nDeveloper Tooling & Enablement\nInternal tools, platforms, conventions or workflows that other engineers chose to use.\nCLI and harness-shaped software, and comfort connecting systems over APIs\nStrong writing. Much of this role is getting other people to work differently, which happens through docs and worked examples rather than announcements\nComfort working outside engineering, explaining technical constraints to people who don't share your background and taking their pushback seriously\nBonus Points\nAgent harnesses, MCP servers, orchestration frameworks\nHealthcare or another HIPAA-regulated environment\nAWS, Terraform, Kubernetes, Docker\nExperience on a platform or infrastructure team where the customers were other engineers\nHaving overbuilt a platform once before the workflows existed, and learning to spot the warning signs earlier\nOur Stack\nRuby on Rails monolith, Aurora MySQL, Redis, Sidekiq, Ember.js, AWS (EKS, Bedrock and more). Linear, GitHub, Semaphore, Datadog, LaunchDarkly.\nBenefits\nWe offer a competitive benefits program including:\nMedical, dental, vision, life & disability insurance\n401(k) plan with company match\nFlexible Time Off (FTO), wellbeing days, paid holidays, and summer Fridays\nMental health resources\nPaid parental leave & Backup Care\nTuition reimbursement\nEmployee Resource Groups (ERGs)\nCalifornia Job Applicant Privacy Notice\nThank you for your interest in opportunities at SimplePractice LLC (“SimplePractice” or “us” or “we” or “our”). Please note that when you submit your resume or application materials to us for employment purposes, you are subject to the SimplePractice California Job Applicant Privacy Notice.\nFor more information about our privacy practices, please contact us at privacy@simplepractice.com.\nNotice to Candidates\nSimplePractice has been made aware of fraudulent job postings and unaffiliated third parties posing as our recruiting team. We do not have any affiliation or connection to these situations and only post open roles on our official Careers page (simplepractice.com/careers) and reputable job boards like our official LinkedIn or Indeed pages.\nAll official SimplePractice recruitment emails will be sent from the domains @simplepractice.com, no-reply@greenhouse.io or no‑reply@linkedin.com email addresses.\nExamples of fraudulent domains include careers-simplepractice.com, simplepractices.com, and simplepractice.careers.\nPlease note that SimplePractice will never ask candidates or new hires for money or payment of any kind at any stage of the recruitment or onboarding proces\nBase salary is one component of total compensation. Employees may also be eligible for an annual bonus or commission. Some roles may also be eligible for overtime pay.\nThe amount below represents the expected annual base compensation range for this job requisition. Ultimately, in determining your pay, we’ll consider many factors including, but not limited to, skills, experience, qualifications, geographic location, and other job-related factors.\nBase Compensation Range\n$208,000—$260,000 USD","company":"Simplepractice","rawCompany":"simplepractice","city":"Denver","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-08-14T14:02:28.878Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Software Engineer II, AI Developer Foundations","description":"Senior Software Engineer II, AI Developer Foundations\nUnited States\nAbout Us\nAt SimplePractice, we are improving access to quality care by equipping health and wellness clinicians with all the tools they need to thrive in private practice.\nMore than 260k providers trust SimplePractice to build their business through our industry-leading software with powerful tools that simplify every part of practice management. From admin work to clinical care, our suite of innovative solutions work together to reduce administrative burden, empowering solo and small group practitioners to thrive alongside their clients.\nAward-winning and people-first, SimplePractice is shaping the future of health tech. Recognized by MedTech Breakthrough, the Digital Health Awards, and BuiltIn's Best Places to Work.\nOur Culture\nAt SimplePractice, culture is our foundation. It influences the way we work, how we serve our customers, and how we approach accomplishing our mission. We have five core values that we strive to embody every day:\nWe think big\nWe take simplicity seriously\nWe come as we are\nWe act with humility\nWe are built on trust\nCulture is everyone's responsibility at SimplePractice. Our culture is what drives us to do better for our teammates and customers.\nConnection and collaboration are also key to our success. You will work with our talented multi-national teams and have opportunities to participate in onsites in both the US and Mexico.\nThe Role\nEngineers on the AI Developer Foundations will build the tools that build the product. It's a new team that owns how AI gets used inside engineering, product, and design at SimplePractice: the conventions for using these tools, the context agents read before they touch our code, the bar generated work has to clear before a human spends time on it, and the training that makes AI a useful tool to all of engineering.\nThis is a hands-on role reporting to the VP of Technology. You'll write code most days, mostly in and around a large Rails monolith, and you'll also write the conventions other engineers follow.\nResponsibilities\nOwn the context layer agents read: rules files, docs conventions, grounding data, with CI and named owners keeping it current\nPublish the standards for how we prompt coding agents, how we supply context, and what a spec needs to contain before it's worth handing to an agent\nDefine the review gates any AI-generated artifact clears before a human spends time on it, and get what reviewers catch flowing back into the conventions\nTake the prototypes running today and turn the ones that hold up into supported workflows that run for someone other than their author\nEvaluate harnesses, models and vendors against criteria and eval sets\nWork the product-to-engineering handoff with PMs, designers and EMs\nTeach. Documentation, worked examples, office hours, and time sitting with a squad while they work with the tools we build\nHelp us draw the boundaries for where an agent runs unattended, where a human signs off, and where we don't use one at all\nDesired Skills & Experience\nEducation & Experience\nBS/MS in Engineering, Computer Science, or related field, or equivalent experience\n7+ years building production software and then maintaining it. You’ve shipped something, lived with the decisions, and found out whether a design decision held up\nStrong problem-solving and communication skills; comfortable in fast-paced, cross-functional environments\nRuby on Rails\nRecent, direct Rails experience in a large codebase.\nAbility to read unfamiliar application code quickly and judge whether what an agent produced in it is any good\nAI-Assisted Engineering\nLLM-backed systems you've shipped to users and kept running, past the point where better prompting stops helping\nExperience building context or memory handling, and writing evals\nJudgment about what belongs in code and what belongs in the model\nTrack record evaluating tools with evidence\nDeveloper Tooling & Enablement\nInternal tools, platforms, conventions or workflows that other engineers chose to use.\nCLI and harness-shaped software, and comfort connecting systems over APIs\nStrong writing. Much of this role is getting other people to work differently, which happens through docs and worked examples rather than announcements\nComfort working outside engineering, explaining technical constraints to people who don't share your background and taking their pushback seriously\nBonus Points\nAgent harnesses, MCP servers, orchestration frameworks\nHealthcare or another HIPAA-regulated environment\nAWS, Terraform, Kubernetes, Docker\nExperience on a platform or infrastructure team where the customers were other engineers\nHaving overbuilt a platform once before the workflows existed, and learning to spot the warning signs earlier\nOur Stack\nRuby on Rails monolith, Aurora MySQL, Redis, Sidekiq, Ember.js, AWS (EKS, Bedrock and more). Linear, GitHub, Semaphore, Datadog, LaunchDarkly.\nBenefits\nWe offer a competitive benefits program including:\nMedical, dental, vision, life & disability insurance\n401(k) plan with company match\nFlexible Time Off (FTO), wellbeing days, paid holidays, and summer Fridays\nMental health resources\nPaid parental leave & Backup Care\nTuition reimbursement\nEmployee Resource Groups (ERGs)\nCalifornia Job Applicant Privacy Notice\nThank you for your interest in opportunities at SimplePractice LLC (“SimplePractice” or “us” or “we” or “our”). Please note that when you submit your resume or application materials to us for employment purposes, you are subject to the SimplePractice California Job Applicant Privacy Notice.\nFor more information about our privacy practices, please contact us at privacy@simplepractice.com.\nNotice to Candidates\nSimplePractice has been made aware of fraudulent job postings and unaffiliated third parties posing as our recruiting team. We do not have any affiliation or connection to these situations and only post open roles on our official Careers page (simplepractice.com/careers) and reputable job boards like our official LinkedIn or Indeed pages.\nAll official SimplePractice recruitment emails will be sent from the domains @simplepractice.com, no-reply@greenhouse.io or no‑reply@linkedin.com email addresses.\nExamples of fraudulent domains include careers-simplepractice.com, simplepractices.com, and simplepractice.careers.\nPlease note that SimplePractice will never ask candidates or new hires for money or payment of any kind at any stage of the recruitment or onboarding proces\nBase salary is one component of total compensation. Employees may also be eligible for an annual bonus or commission. Some roles may also be eligible for overtime pay.\nThe amount below represents the expected annual base compensation range for this job requisition. Ultimately, in determining your pay, we’ll consider many factors including, but not limited to, skills, experience, qualifications, geographic location, and other job-related factors.\nBase Compensation Range\n$208,000—$260,000 USD","datePosted":"2026-08-14T14:02:28.878Z","dateModified":"2026-08-14T14:02:28.878Z","hiringOrganization":{"@type":"Organization","name":"Simplepractice","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Denver","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"61ce642a93ecd96fffa6d40e"},"url":"https://jobsearcher.com/jobs/61ce642a93ecd96fffa6d40e"}}