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Find jobsAccelerate app performance with NoSQL databases. Firestore devs rapidly build scalable backend solutions—hire quickly and onboard in less than a week.
Piotr is a proactive Middle-to-Senior developer with over 8 years of experience in such technologies as Golang, React, Next.js, Flutter. He is passionate about self-development within dynamic start-up environments and is focused on the quality end result. His biggest strength - Go, he's been developing with it since 2015 and acquired extensive knowledge in everything related to this technology - architecture, microservices, system components, testing, and covering all the required databases.
Dmitry is a talented Flutter developer who has already successfully completed several projects through Lemon.io and worked as our technical interviewer. He will not only be able to build out your product but also help out with the business side of things if needed: Dmitry created MVPs and co-founded several projects himself. His key achievements include scaling an engineering team to over 70 people, building a new Flutter department from scratch, and improving team productivity by 40% through strategic process optimization.
For over a decade, Karen has been mastering the art of creating beautiful mobile apps using iOS/Swift and Android/Kotlin. His Senior-level hard skills with both OSs are smoothly blended with solid-level soft skills: Karen is an easygoing guy who can contribute efficiently to any discussion as well as proficiently build an architecture of the application from scratch. His prior projects include working with IoT, automotive, and smart home, among others. With such a blend of tech expertise and personal qualities, your project needs him 🌟
Abbas is a Senior Mobile developer with more than 20 (!) years in the industry. Currently, he specializes exclusively in Flutter and brings 5 years of expertise to the table. With a pragmatic approach to work and extensive experience combined with solid soft-skills, Abbas is an asset to any team. His previous projects include developing a crypto wallet, working with several SaaS companies, and contributing to an AR museum project.
Badr-Eddine is a strong AI Engineer with 7 years of experience, combining deep ML expertise built at a large-scale product search team with real end-to-end product ownership. His core strength is production-grade ranking and retrieval — multi-stage cascade ranking, neural retrieval, and RAG systems — underpinned by an MSc in Mathematics from Oxford and a published research paper (ACM 2025) on cascade ranker cost-efficiency. Alongside his main role, he independently co-founded and shipped two AI products with paying users, demonstrating the kind of full-stack ownership startups actually need. He's rigorous, metrics-first, and honest about the boundaries of his knowledge.
João is an experienced Front-End and Mobile Developer with a strong background in React, React Native, Next.js, and TypeScript, delivering high-quality applications for industries including e-commerce, fintech, agritech, and education. Skilled in developing scalable front-end architectures, microfrontends, and cross-platform mobile solutions for both Android and iOS, he also excels in consulting and architectural decisions. Passionate about building impactful, user-centered products, he combines strong technical expertise with collaborative leadership to deliver reliable, maintainable, and elegant solutions across platforms.
Rizky is a Senior Mobile Engineer with deep expertise in React Native and TypeScript, complemented by native development experience in Kotlin and Swift. He has delivered complex mobile applications, demonstrating strong architectural skills, performance optimization, and a focus on UI/UX. He demonstrates strong passion and enthusiasm for mobile engineering, applying his skills thoughtfully to deliver reliable, high-quality apps.
Josh is a strong Flutter developer with 6+ years of commercial experience across fintech and healthtech startups, combining strong mobile depth with a solid TypeScript/Node.js backend track record. He was part of the founding engineering team at a healthtech company that scaled from 5 people to 30+ FTEs and £10m+ ARR, owning the Flutter frontend, TypeScript backend, BLE wearable integrations, and architecture decisions end-to-end. He uses AI tooling daily with a disciplined, production-minded approach — and has recently shipped commercial LLM-powered products as a solo founding engineer.
Meet Douglas — a Senior Mobile Engineer with over 10 years of experience building high-quality mobile applications across industries such as retail, fintech, healthcare, HR tech, and cybersecurity. Since 2018, his core focus has been on Flutter, where he has led and delivered complex, production-grade apps, often bridging native Android (Kotlin) and iOS (Swift) integrations when needed. Recently certified in Generative AI, Douglas will be happy to apply his knowledge in projects!
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Onboard the chosen one
Your developer starts with a project—we deal with a contract, monthly payouts, and what not
Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.
We had an excellent experience. Process is fast from the initial intake through setting up payment.
The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.
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On a quick 30-min call, share your expectations and get a budget estimate
Shortlist the best matches
Get 2-3 expertly matched candidates within 24-48 hours and meet the worthiest
Handle the paperwork
Your developer starts with a project—we deal with a contract, monthly payouts, and what not
The lemon tea
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Cost
Every one of our 1300+ senior engineers has passed through our four-step vetting process, covering everything from soft to hard skills.
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We provide you with a list of senior devs just 48 hours after you tell us what skills you're looking for, allowing you to hire devs faster so you can get moving again.
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Our risk-free replacement guarantee comes without caveats, restrictions, or questions asked. If you want a different dev, just tell us and we'll match you with another, free of charge.
Why hire Firestore
High-quality web apps
Firestore's modular approach lets devs reuse components, so they can seamlessly manage app complexity.
Faster development process
Firestore's architecture and a vast library of pre-built components speed up development, so you can get to market sooner.
Enjoyable user experience
From smooth, responsive interfaces to reduced loading times, devs can use Firestore to boost usability.
Scaling made easy
Firestore's modular, component-based architecture makes it easy to scale applications as traffic grows.
The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.
We needed extra developers to clean off all these bugs so the company could skyrocket.
We needed extra AI engineers to keep our ambitious project running.
You can search for Firestore developers on LinkedIn and get connected to pros having skills in Firebase and Firestore. You can seek on GitHub, Stack Overflow, and even in the r/firebase subreddit. Also, look on freelance platforms to hire a specialist for any short-term or project work. If you want a much faster and more personalized approach, consider Lemon.io. We will match you with pre-vetted Firestore developers in just under 48 hours. Thus, you can avoid wasting your time on tedious tasks associated with hiring.
Lemon.io offers a 20-hour no-risk trial with a Firestore developer. This is a paid trial that you can try before a subscription or direct hire. This way, you can be sure that the developer will get the job done and fit in well with your current team. If the selected candidate does not meet your expectations or is not a good fit for your team, we will find another specialist for you. However, replacements are extremely rare and are only a last resort that we mention to clients.
Yes, there is. The demand for Firestore developers is high since Firebase Firestore itself is growing as one of the most popular real-time and scalable NoSQL database solutions. The main point is that Firestore deals with real-time data synchronization. This is very important for modern applications where a user needs to see information updated all the time, such as in messaging or collaboration applications and e-commerce sites. It has good integration with other Firebase services and works nicely under heavy traffic. Thus, Firestore is shining in the market.
Within 48 hours, we will connect you with the top Firestore developers. We will arrange a few calls between you and the candidates you’d like to e-meet. Our team carefully selects only competent and loyal professionals who go through a multi-stage selection process that includes thorough profile, soft skills, and hard skills checks. We’re here to make your experience as easy and stress-free as possible!
Lemon.io is a fast and cost-effective way to find a contractor. Our service saves you a lot of time. In just two days, we deliver you a profile of pre-screened developers. We guarantee that all of our contractors have been through a very rigorous selection process, which includes a profile review and soft and hard skills checks. You can rely on us for flexibility. Our subscription models and direct hire options come with a no-risk, paid 20-hour trial period, performance monitoring, and replacements. If you’re not satisfied, we’ll find a different specialist. Yet, Lemon.io has an extremely low replacement rate.
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