Speak · 6 hours ago
Senior iOS Engineer
San Francisco Bay Area
Full-time
Onsite
Senior Level
5+ years expSpeak is an innovative company dedicated to reinventing language learning through AI-powered tutoring. The Senior iOS Engineer will be responsible for enhancing user experience, running A/B tests, and launching new markets and languages while collaborating closely with cross-functional teams.
Artificial Intelligence (AI)E-LearningLanguage LearningSpeech Recognition
Responsibilities
Improve “freemium” experience to increase conversions
Support the launching of new markets and new languages
Implement various paywall tests, such as pricing, design changes, delayed paywalls, discounted offers, etc
Improve our speech-to-text system
Improve our audio and video streaming systems
Qualification
Required
5+ years of industry experience working as a Mobile Engineer, preferably in a fast-paced startup environment
Proficiency in Swift, with a strong understanding of common mobile architectures including MVC/MVVM
Reactive programming(RX Java, etc)
Knowledgable in mobile build practices(eg jenkins, bitrise)
Knowledgable in Apple StoreKit/RevenueCat
Excellent problem-solving and communication skills, and the ability to work independently or as part of a team
Coach and mentor other engineers
Strong product sense: ability to think broadly/cross-functionally about product experiences
Preferred
worked on an app that has been used by 1M users
Experience in SwiftUI
Experience in mobile streaming technologies (websockets, ll-hls)
Benefits
Join a fantastic, tight-knit team at the right time: we're growing very quickly, we've most recently raised our Series C from some of the top investors in the valley, and we've achieved product-market fit in our initial markets. You'd join at a magical time when a single person could significantly change the course of the company.
Do your life's work with people you’ll love working with: we care strongly about our craft and want every person at Speak to feel like they're growing every day. We believe in the idea that working with people you both enjoy and have respect for makes everything better. We hire thoughtfully and only work with people we admire deeply.
Global in nature: We're live in over 40 countries and launching in a number of new markets soon. We have dedicated offices in San Francisco, Ljubljana, Seoul, and Tokyo, and you’ll have the opportunity to talk to users in each of these regions on a regular basis as well as travel.
Impact people's lives in a major way: Learning a language is one of the single most life-changing skills one can learn, and right now 99% of people never achieve their goal because the process is broken. We’re helping millions of people achieve their goals and improve their lives.
Company
Speak
The language learning app that gets you speaking
51-200 employees
H1B Sponsorship
Speak has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2024 (3)
Funding
Current Stage
Growth StageTotal Funding
$152MKey Investors
AccelBuckley VenturesLachy Groom
2024-12-10Series C· $78M
2024-06-21Series B· $20M
2023-07-19Series B· $16M
Leadership Team
Andrew Hsu
Cofounder & CTO
Recent News
2025-12-11
2025-12-03
Company data provided by crunchbase