Senior Platform Engineer, AI Evaluation (24 months fixed-term) at Khan Academy

ABOUT KHAN ACADEMYKhan Academy is a nonprofit with the mission to deliver a free world-class education to anyone anywhere. Our proven learning platform offers free high-quality supplemental learning content and practice that cover Pre-K - 12th grade and early college core academic subjects focusing on math and science. We have over 181 million registered learners globally and are committed to improving learning outcomes for students worldwide focusing on learners in historically under-resourced communities.OUR COMMUNITYOur students teachers and parents come from all walks of life and so do team includes people from academia traditional/non-traditional education big tech companies and tiny startups. We hire great people from diverse backgrounds and experiences because it makes our company value diversity equity inclusion and belonging as necessary to achieve our mission and impact the communities we know that transforming education starts in-house with learning about ourselves and our colleagues. We strive to be world-class in investing in our people and commit to developing you as a professional.THE ROLEWere looking for an AI Platform Engineer to evolve and extend our internal evaluation framework for assessing the quality of our AI-driven experiences at Khan Academy. This engineer will have worked with enough eval systems to quickly make sense of Khans internal eval framework and recognize opportunities for improvement. This is largely a software development role but domain experience with AI eval is essential for appreciating the hill-climbing and data science workflows we need to support. Soft skills will be important for gathering internal requirements getting buy-in for changes and then developing documentation and training materials. Youll work closely with ML data engineers and platform developers to help internal teams adopt an eval-driven development process incorporating offline benchmark tests and online experiments.As a Platform Engineer focused on evaluation youll be expected to:Be fluent in the range of offline and online evaluation strategies and when to apply the techniques over the lifecycle of developmentHave intuitions about how to specify eval pipelines succinctly using declarative syntaxUnderstand the role of stratified datasets and ground truth labelingAppreciate the range of eval scoring schemes from human raters to automated LLMs-as-judgeWe are a remote-first organization and we strive to build using technology that is best suited to solving problems for our learners. Currently we build with Go GraphQL JavaScript React & React Native Redux and we adopt new technologies like LLMs when theyll help us better achieve our goals. At Khan one of our values is Cultivate Learning Mindsets so for us its important that were working with all of our engineers to help match the right opportunity to the right individual in order to ensure every engineer is operating at their learning edge.Currently we are focused on providing equitable solutions to historically under-resourced communities of learners and teachers and guided by our Engineering Principles. You can read about our latest work on our Engineering Blog. A few highlights:Incremental Rewrites with GraphQLOur Transition to React NativeGo Services One Goliath ProjectHow Engineering Principles Can Help You ScaleHow to upgrade hundreds of React components without breaking productionWHAT YOU BRINGBachelors or Masters degree in Computer Science Data Engineering or a related field5 years of Software Engineering experience with 2 of those years working on the evaluation of generative AI systemsStrong programming skills in Go Python SQL and at least one data pipeline framework (e.g. Airflow Dagster Prefect)Familiarity with the architecture of large language models and their industry-standard APIsPreferredExperience with labeling platforms (e.g. Label Studio Scale AI Toloka) and human-in-the-loop concerns such as rubric development and inter-rater agreementExposure to MLOps practices such as model registry feature store or continuous evaluationBackground in education technology or other human-centered AI applicationsPERKS AND BENEFITSWe may be a non-profit but we reward our talented team extremely well! We offer:Competitive salariesAmple paid time off as needed Your well-being is a priority8 pre-scheduled Wellness Days in 2026 occurring on a Monday or a Friday for a 3-day weekend boostRemote-first culture - that caters to your time zone with open flexibility as needed at timesGenerous parental leaveAn exceptional team that trusts you and gives you the freedom to do your bestThe chance to put your talents towards a deeply meaningful mission and the opportunity to work on high-impact products that are already defining the future of educationOpportunities to connect through affinity ally and social groupsAnd we offer all those other typical benefits as well: 401(k) 4% matching & comprehensive insurance including medical dental vision and lifeAt Khan Academy we are committed to fair and equitable compensation practices the well-being of our employees and our Khan community. This belief is why we have built out a robust Total Rewards package that includes competitive base salaries and extensive benefits and perks to support physical mental and financial well-being.The target salary range for this position is $137871 - $172339 USD / $186306 - $232883 CAN. The pay range for this position is a general guideline only. The salary offered will depend on internal pay equity and the candidates relevant skills experience qualifications and job market data.MORE ABOUT USSals TED talk from 2011Sals TED talk from 2015Sals TED talk from 2023Our team: COMPANY VALUESLive & breathe learnersWe deeply understand and empathize with our users. We leverage user insights research and experience to build content products services and experiences that our users trust and love. Our success is defined by the success of our learners and educators.Take a standAs a company we have conviction in our aspirational point of view of how education will evolve. The work we do is in service to moving towards that point of view. However we also listen learn and flex in the face of new data and commit to evolving this point of view as the industry and our users evolve.Embrace diverse perspectivesWe are a diverse community. We seek out and embrace a diversity of voices perspectives and life experiences leading to stronger more inclusive teams and better outcomes. As individuals we are committed to bringing up tough topics and leaning into different points of view with curiosity. We actively listen learn and collaborate to gain a shared understanding. When a decision is made we commit to moving forward as a united team.Work responsibly and sustainablyWe understand that achieving our audacious mission is a marathon so we set realistic timelines and we focus on delivery that also links to the bigger picture. As a non-profit we are supported by the generosity of donors as well as strategic partners and understand our responsibility to our finite resources. We spend every dollar as though it were our own. We are responsible for the impact we have on the world and to each other. We ensure our team and company stay healthy and financially sustainable.Bring out the joyWe are committed to making learning a joyful process. This informs what we build for our users and the culture we co-create with our teammates partners and donors.Cultivate learning mindsetWe believe in the power of growth for learners and for ourselves. We constantly learn and teach to improve our offerings ourselves and our organization. We learn from our mistakes and arent afraid to fail. We dont let past failures or successes stop us from taking future bold action and achieving our goals.Deliver wowWe insist on high standards and deliver delightful effective end-to-end experiences that our users can rely on. We choose to focus on fewer things each of which aligns to our ambitious vision so we can deliver high-quality experiences that accelerate positive measurable learning with our strategic partners.We are committed to equal employment opportunity regardless of race color ancestry religion sex gender gender identity or expression national origin sexual orientation age citizenship marital status disability or Veteran status. We value diversity equity and inclusion and we encourage candidates from historically underrepresented groups to apply.As part of this commitment Khan Academy will ensure that persons with disabilities are provided reasonable accommodations for the hiring process. If reasonable accommodation is needed please contactRequired Experience:Senior IC Key Skills APIs,C/C++,Computer Graphics,Go,React,Redux,Node.js,AWS,Library Services,Assembly,GraphQL,High Voltage Employment Type : Contract Experience: years Vacancy: 1 Monthly Salary Salary: 137871 - 172339