{"id":"1452355172","title":"Senior iOS Engineer","posted_at":"2026-06-12T20:52:58.000Z","apply_url":"https://job-boards.greenhouse.io/duolingo/jobs/8393272002","locations":["Pittsburgh, PA"],"employment_type":null,"workplace_type":null,"seniority_level":"senior","description_language":"en","source_name":"greenhouse","source_url":"https://careers.duolingo.com/jobs/8393272002?gh_jid=8393272002","salary":{"min":177700,"max":240400,"currency":"USD","period":"year","display":"$177,700–$240,400"},"job_summary":"Duolingo is a leading education technology company dedicated to making high-quality learning accessible to a global audience. This role involves developing and maintaining core iOS features within the Short Form Area to enhance the effectiveness and engagement of language learning sessions.","job_description":{"responsibilities":["Collaborate on software projects with product design and backend teams","Develop, release, and maintain native iOS applications using Swift","Mentor and set technical direction for junior engineers across the company"],"minimum_qualifications":["Bachelor’s degree in Computer Science or a related technical field","Solid foundation in computer science with strong competencies in data structures, algorithms, and software design","Programming experience in Swift"],"preferred_qualifications":["Strong proficiency in Swift with experience building production-level applications","Technical knowledge of iOS mobile development for iPhone/iPad using Cocoa Touch and related frameworks","Experience designing clean and maintainable APIs","Experience with multithreaded programming","Experience writing unit tests and testable code","Knowledge of iOS SDK performance tools and optimization techniques"]},"visa_sponsorship":null,"experience_years_min":null,"job_address":null,"job_city":null,"job_state":null,"job_country":null,"location_lat":40.461627,"location_lng":-79.92678,"keywords":["machine learning","data structures","collaboration","monetization","data science","maintainable","high-quality","Collaborate","data-driven","performance","advertising","engineering","mentorship","operations","production","algorithms","referral","security","business","internal","backend","writing","privacy","develop","design","Mentor","social","Google","teams","Swift","clean","email","data","APIs","iOS","SDK","ML"],"company":{"name":"Duolingo","logo_url":"https://img.logo.dev/duolingo.com?token=pk_fWx5G5QrQMm-0Ud8BW3mBg&size=64&format=png","description":"Duolingo is an education technology company that provides a mobile learning platform for languages, math, and music, alongside an English proficiency testing service.","website_url":"https://duolingo.com","linkedin_url":"https://www.linkedin.com/company/duolingo","glassdoor_url":null,"x_url":"https://x.com/duolingo","instagram_url":"https://www.instagram.com/duolingo/","youtube_url":"https://www.youtube.com/@duolingo","github_url":"https://github.com/duolingo","huggingface_url":null,"tiktok_url":"https://www.tiktok.com/@duolingo","crunchbase_url":"https://www.crunchbase.com/organization/duolingo","facebook_url":"https://www.facebook.com/duolingo/","employee_count_range":"1001-5000","employee_count":null,"founded_year":2011,"headquarters":{"address":"5900 Penn Avenue, Pittsburgh, PA 15206, United States","city":"Pittsburgh, PA","country":"US","lat":40.4406968,"lng":-80.0025666},"industry":"edtech","company_type":"enterprise","total_funding_usd":null,"locations":["Beijing, China","Bengaluru, India","Detroit, MI","India","London, UK","London, United Kingdom","New York, NY","Pittsburgh, PA","Seattle, WA"]}}