L

Lucida AI

Real-time speech-to-speech language coaching platform

Flutter Developer 2

Full-TimeUpdated on 10/17/2026
No salary listed
Mid
İstanbul, Türkiye
In Person
Software EngineeringMobile Engineering

About the job

Requirements
  • At least 3 years of experience with Flutter and Dart.
  • A strong understanding of mobile application architecture and state management.
  • Experience integrating REST APIs and third-party software development kits.
  • Familiarity with Git and collaborative development workflows.
  • Attention to performance, code quality, and user experience.
  • Comfort working in a fast-paced startup environment.
Responsibilities
  • Build and maintain features across Flutter applications.
  • Collaborate with Product, Design, AI, and Backend teams to deliver high-quality user experiences.
  • Write clean, maintainable, and scalable code.
  • Optimize app performance, stability, and reliability.
  • Participate in code reviews and contribute to engineering best practices.
  • Improve app quality through testing and iteration.
Desired Qualifications
  • Experience publishing apps on the App Store and Google Play.
  • Experience with Firebase, analytics, and push notifications.
  • Familiarity with native Android using Kotlin or iOS using Swift.
  • Experience building subscription-based consumer apps.
  • Active use of AI tools to improve the development workflow.

About the company

L

Lucida AI

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Website

Lucida AI is a London-based platform that enables real-time speech-to-speech practice for language coaching and global communication. It serves both consumers and enterprises with real-time pronunciation and fluency feedback during spoken practice. The product works by analyzing spoken input from a user, providing immediate feedback through its proprietary Speech Language Model infrastructure, and guiding users through practice to improve pronunciation and fluency across multiple languages. The company differentiates itself with a dedicated focus on speech-to-speech coaching (not just text-based feedback), real-time evaluation, and a scalable enterprise deployment path, supported by an expanding language base and geographic reach. Its goal is to grow its language coverage and geographic availability while deploying its technology at scale to millions of users and across business customers.

Company Size

1-10

Company Stage

Seed

Total Funding

$8.3M

Headquarters

London, United Kingdom

Founded

2024

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Simplify's Take

What believers are saying

  • Lucida said on September 13, 2026, its app added vocabulary games and role-playing.
  • Lucida reported 3 million users and 2.2 billion spoken minutes by June 2026.
  • Velocity Capital led Lucida’s June 30, 2026, $7 million seed round for expansion.

What critics are saying

  • Duolingo’s free app crushes paid conversion, making Lucida’s consumer monetization fragile in 2026.
  • OpenAI, Google, and Apple can bundle voice coaching, commoditizing Lucida’s core feature set.
  • If enterprise deployments lag, Lucida burns through seed capital before durable unit economics emerge.

What makes Lucida AI unique

  • Lucida’s proprietary Speech Language Model analyzes pronunciation, fluency, and clarity in real time.
  • Lucida serves consumers and enterprises with on-premises hosting and end-to-end encryption.
  • Lucida has multilingual, speech-first practice across English, Spanish, Portuguese, French, German, and Arabic.

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Benefits

  • Health Insurance
  • Professional Development Budget
  • Flexible Work Hours

Company News

Mobidictum
Jul 2nd, 2026
Lucida AI raises $7M to scale its speech-native AI platform and challenge Duolingo.

Lucida AI raises $7M to scale its speech-native AI platform and challenge Duolingo. London-based, Istanbul-founded speech AI startup Lucida AI has raised $7 million in a seed funding round led by Velocity Capital. The investment, joined by Next Tier Ventures, Look AI Ventures, Boğaziçi Ventures, Yapı Kredi FRWRD, and Ünlü & Co, brings the company's total funding to $8.25 million since its launch in 2024. The capital will support Lucida's goal to challenge language-learning giants like Duolingo by building a scalable, speech-native AI platform that powers global communication. The funding will also accelerate product development, support the addition of more languages, and expand Lucida's enterprise business worldwide. Founded by experienced tech entrepreneurs. Founded in 2024 by Mustafa Girgin and Mustafa Sait Demirci, Lucida AI carries a strong track record of entrepreneurship. Before launching Lucida, Mustafa Girgin co-founded the HR technology startup Coensio, which was successfully acquired by the Turkish recruitment giant Kariyer.net in 2022. Applying that experience to the AI sector, the team has quickly scaled Lucida into a speech-language model that holds real-time conversations, adapts to each user's fluency, and provides instant feedback on pronunciation, clarity, and confidence - all without typing or scripted drills. Strong traction and high retention. In just 15 months, Lucida has achieved milestones that most seed-stage consumer AI apps rarely reach: * 3 million users reached across Europe, the US, and emerging markets. * 2.2 billion minutes of spoken interaction logged. * Seven-figure Annual Recurring Revenue (ARR) reached. * Hybrid business model serving both consumers and enterprise clients with on-premises hosting and end-to-end encryption. A speech-first approach in a crowded market. While the language-learning market is dominated by gamified platforms like Duolingo (valued at $6.1 billion) and pronunciation tools like ELSA Speak, Lucida bets that making speech the primary mode of interaction - not just an add-on feature - will set it apart. Mustafa Girgin and Mustafa Sait Demirci, Co-Founders of Lucida AI, said: "AI is becoming a global race, and meaningful innovation is no longer tied to a single geography. With this round, we've partnered with investors who share our long-term vision. Our focus is clear: building a scalable, speech-native AI platform that powers global communication." Investor perspective. "Lucida AI possesses the characteristics of the types of businesses that the Velocity EIS Technology Fund looks to invest in: a strong management team, capital efficiency, and significant growth in a growing market. We are delighted to join the team on their journey." Thomas Lindup, COO at Velocity Capital "Lucida is building a speech-native learning platform with a phonetic engine that provides more accurate pronunciation feedback than generic AI tutors. It's on a clear path to becoming a category-defining company in AI-powered communication." Angelo Burgarello, Partner at Look AI Ventures Future outlook. The global online language learning market is expected to grow to $91.6 billion by 2030. With its Istanbul-founded, London-headquartered structure, Lucida AI is positioning itself for cross-border growth, focusing on multilingual expansion rather than adding global features to an English-only product later. The company's immediate challenge will be competing with Duolingo's free model while proving that its speech-native AI can become the industry standard for fluency. Lucida AI Fun-ding celebration. To celebrate the $7M raise, the Lucida AI team is hosting a special event in Istanbul for the mobile, AI, and investment ecosystem. The gathering will bring together founders, builders, and investors for an evening of networking at a Michelin-listed venue in Beyoğlu. The night will also feature a surprise DJ set by co-founder Mustafa Sait Demirci and Product Specialist Hasan Ali Ozdemir.

Tech.eu
Jun 30th, 2026
Lucida AI closes $7M seed round for speech-to-speech AI.

Lucida AI closes $7M seed round for speech-to-speech AI. Lucida AI will use the funding to expand its speech-to-speech AI platform into new languages, markets and enterprise use cases. Lucida AI, a speech-to-speech AI platform for global communication, has secured an additional $1.6 million in funding, bringing its seed round to $7 million. The seed round was led by UK-based Velocity Capital, with participation from Next Tier Ventures, Look AI Ventures, Bogazici Ventures, Yapı Kredi Frwrd Ventures and Ünlü & Co. The company had announced the initial $5.4 million close of its seed round a few months ago. As communication increasingly spans multiple languages and cultures, spoken fluency and confidence play a growing role in how effectively people interact. Founded by Mustafa Girgin and M. Sait Demirci, Lucida AI develops speech-native AI technology designed to help individuals and businesses improve spoken communication through real-time, AI-powered conversations. Powered by its proprietary Speech Language Model (SLM), the platform enables users to speak naturally with AI without relying on text prompts or scripted exercises. It adapts conversations to each user's proficiency level, providing instant feedback on fluency, pronunciation and clarity while simulating real-world situations ranging from everyday interactions to business meetings, presentations and client calls. Lucida AI is available as a mobile application for individual users and also offers enterprise deployments with on-premises hosting and end-to-end encryption. Since launching 15 months ago, the company says it has grown to more than 3 million users and generated over 2.2 billion minutes of spoken interaction across Europe, the United States and emerging markets. AI is becoming a global race, and meaningful innovation is no longer tied to a single geography. With this round, we've partnered with investors who share our long-term vision. Our focus is clear: building a scalable, speech-native AI platform that powers global communication, said Mustafa Girgin and M. Sait Demirci, co-founders of Lucida AI. The funding will support Lucida AI's expansion into new languages and markets, further development of its proprietary speech-to-speech AI infrastructure, growth of its enterprise offering and continued product development. Follow the developments in the technology world. What would you like us to deliver to you?

Tech Funding News
Jun 30th, 2026
London's Lucida AI raises $7M to challenge Duolingo with speech-native learning platform

Lucida AI, a London-based speech-to-speech language learning platform, has raised $7 million in a seed round led by Velocity Capital, bringing total funding to $8.25 million. The company, founded in Istanbul in 2024, has reached 3 million users and logged 2.2 billion minutes of spoken interaction in 15 months. Unlike text-based competitors such as Duolingo, Lucida focuses on real-time spoken conversations without typing or multiple-choice questions. Its speech-language model provides instant feedback on pronunciation and adjusts to user fluency levels. The platform offers both consumer and enterprise versions, with on-premises hosting for data sovereignty. The company has achieved seven-figure annual recurring revenue. The funding will support expansion into new languages and regions, and development of its enterprise business in the growing online language learning market, projected to reach $91.6 billion by 2030.

Bdaily
Jun 30th, 2026
Funding to help Lucida AI amplify its global voice.

Funding to help Lucida AI amplify its global voice. A London-based speech-to-speech language learning platform has secured fresh investment to accelerate its global expansion. Lucida AI has raised $7m in a seed funding round led by UK-based Velocity Capital, with participation from Next Tier Ventures, Look AI Ventures, Bogazici Ventures, Yapı Kredi Frwrd Ventures and Ünlü & Co. The latest funding follows a $1.25 million pre-seed investment, taking the company's total funding to $8.25 million. The platform enables users to hold natural, real-time conversations with AI, providing instant feedback on fluency, pronunciation and clarity. It is designed to support both everyday communication and business interactions, with mobile access for individuals and secure deployment options for enterprise customers. Since launching 15 months ago, Lucida AI says it has attracted more than three million users worldwide and generated over 2.2 billion minutes of spoken interaction across Europe, the United States and emerging markets. Bosses say they plan to use the funding to expand into new languages and markets, further develop its proprietary speech-to-speech AI platform, grow its enterprise offering and accelerate product development. Mustafa Girgin and M. Sait Demirci, co-founders of Lucida AI, said: "AI is becoming a global race, and meaningful innovation is no longer tied to a single geography. "With this round, we've partnered with investors who share our long-term vision. "Our focus is clear: building a scalable, speech-native AI platform that powers global communication." Thomas Lindup, chief operating officer at Velocity Capital, added: "Lucida AI possesses the characteristics of the types of businesses that the Velocity EIS Technology Fund looks to invest in: a strong management team; capital efficiency; data-driven; international application; significant growth in a growing market, with a broad and mixed customer base. "We are delighted to join the team on their journey." Angelo Burgarello, partner at Look AI Ventures, added: "We invested in Lucida because of the team's speed and a vision we found genuinely ambitious: making high-quality spoken-language practice accessible. "The company aims to disrupt the LLM wrappers currently available, as none can provide the same level of reliability. "Lucida is building a speech-native learning platform with real-time conversation and a phonetic engine that provides more accurate pronunciation feedback than generic AI tutors. "With a seven-digit ARR, it's on a clear path to becoming a category-defining company in AI-powered communication." Want your business, product or service to be seen regionally and nationally? Bdaily helps you get your story in front of the right audience, every day. Find out how Bdaily can help Join more than 55,000 subscribers by signing up to our daily bulletin each morning here. Explore these topics. Enjoy the read? Get Bdaily delivered. * Occasional offers & updates from selected Bdaily partners

Lucidity Insights
Apr 16th, 2026
Voice AI startup Lucida AI hits 3M users, secures $5.4M seed funding.

Voice AI startup Lucida AI hits 3M users, secures $5.4M seed funding. 16 April 2026 - Mustafa Girgin, Lucida AI Co-Founder In the startup world, "traction" is a word that gets thrown around until it loses all meaning. But then a company like Lucida AI comes along and puts up numbers that make even the most cynical VC lean in. Lucida AI, the voice-first AI language learning platform, recently announced a massive $5.4 million seed funding round. The round was headlined by Boğaziçi Ventures via their shiny new $50 million AI-focused fund, BV Growth II, which chipped in $1.2 million as its inaugural investment. Other heavy hitters joined the cap table, including Velocity Capital, Look.ai, and Yapı Kredi FRWRD Ventures. For a company that only snagged a $500,000 pre-seed just two years ago, this is more than a step up - it's a launchpad. Why the hype? It's the "SLM" Most language apps are essentially digital textbooks. Lucida AI is different because it uses a proprietary Speech Language Model (SLM). While most Large Language Models (LLMs) focus on text, Lucida's SLM is built specifically for the nuances of the human voice. It doesn't just check if you got the word right; it analyzes your pronunciation, fluency, and grammar in real-time. Even cooler? The AI has a "memory." It remembers your past mistakes and your favorite topics, evolving from a cold interface into a personalized coach that knows you're still struggling with your French "R"s. The "speedrun" to 3 million users. You don't get a $5.4M seed round in this economy without proof of life. Lucida AI hit 3 million users in just nine months. Let that sink in. But the real gold isn't just the user count - it's the data. The platform has generated billions of minutes of conversational data. In the AI arms race, data is the only real moat. By capturing how millions of people actually speak (and where they stumble), Lucida is training a model that is increasingly difficult for competitors to replicate. A turkish heart with a global pulse. Despite its roots, Lucida AI isn't playing a local game. Their user base is a masterclass in diversification: * 45% Europe * 44% USA * 11% LATAM & Asia This global-first approach is exactly what caught the eye of Barış Özistek, CEO of Boğaziçi Ventures. He noted that Lucida is a "global scale" startup that has proven its growth with hard, cold user data. The future: communication, not just coding. Co-founder Mustafa Girgin put it best: "Communication skills are more critical than language learning." In a world where AI can translate text perfectly, the value of human speech and the confidence to use it is skyrocketing. Lucida AI isn't just building an app; they are setting the global standard for how humans and AI interact to bridge the communication gap. If they keep up this pace, the "flashcard" era of language learning might finally be heading for the archives.