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American (native English speaker) living abroad.
I teach people how to get projects built fast and become successful developers 🔥.
I don't compete on price, but I do compete on quality, speed of training, and lack of a language barrier 🙂
**Free Resources**
▶️ I have a growing [YouTube channel](https://www.youtube.com/channel/UCPsi8tNv7UuNRljOTK5sl4A) where I cover popular requests I get.
**Why Work With Me?**
⭐ More than 250+ 5 Star Reviews (see my [Wyzant profile](https://www.wyzant.com/match/tutor/87903194) too)
🗽 Native English speaker
✅ EXTREMELY responsive (from 10am to 10pm Portugal time)
💰 Successfully started and improved software dev careers for multiple clients.
⚪ Able to communicate complex topics simply
❤️🔥 Burning passion for coding and teaching
👁️ Can provide Process Maps for visual learners
**Refund Policy**
💸 If I'm unable to help, you get a full refund. Easy 🙂
**Backstory**
I started programming in 2018 after my mentor told me that it really fits the way I think.
Before I started I was learning marketing, working in Facebook Ads and Shopify Stores (with Google Analytics, VWO, and other website optimization softwares), I was more interested in automation, and building to do tasks only once.
I started at first learning Python for automation (which is still my primary language and what I really enjoy coding in). Eventually, I learned that by itself, Python isn't that sharable if you want other non-coders to use the my apps, so I grew my way into web development, diving deep into Django, HTML & CSS, building multiple sites with only those to get experience, for example:
- My website: https://www.zackplauche.com/
- A mini app I built: https://www.dollarperhourcalculator.com
And more :)
Then eventually learning JavaScript and the Vue.js framework to take my websites, designs, and User Experiences to the next level, building at first simple apps like my DollarPerHour Calculator (https://zackplauche.github.io/DollarPerHourCalculator/), and more advanced ones, like the current one I'm developing (still in progress, but it's the biggest app I've ever build, using both Vue.js and Django).
I've been teaching programming since 2019, and my students have loved me. I have students I work with that have been working with me weekly since I first started (more than 5 years now!). They helped me keep both my coding and teaching career sustainable as I was helping them with their issues, training them to be effective developers, starting my own software agency, and building my own apps.
I'm extremely grateful to my students and truly care about and do my best to support their success in whatever their endeavors.
A full-stack software engineer passionate about crafting scalable, high-performing web solutions. With a strong focus on appealing user interfaces, efficient software design, and outstanding online platforms, I leverage my tech stack to build exceptional products. I thrive on collaborating with other talented engineers to deliver quick and effective solutions.
I’m a senior mobile + backend engineer with 20+ years in software (PHP since 2002; professional since 2005) and 10+ years building mobile apps. I help teams ship and stabilize real products—especially apps that are “almost done” but stuck on crashes, performance, flaky networking, or release blockers.
What I can help you with (fast, practical):
• iOS (Swift, SwiftUI, UIKit): crash fixes, performance/memory, concurrency issues, architecture cleanup
• Flutter (iOS/Android/macOS): reliability, state consistency, networking/retry behavior, release readiness
• Backend stability (PHP/Laravel or custom, Python/Django, Rails): idempotency, queues, DB performance, webhook safety
• Firebase + mobile reliability: Auth/Firestore rules, Cloud Functions patterns, analytics/instrumentation
• Monetization + shipping: RevenueCat/IAP reliability, App Store Connect/Play Console, CI/CD, rejection handling
Recent work includes taking a messy iOS codebase (CakeClub) to production-ready with a Firebase Cloud Functions v2 backend, stronger security patterns, CI/release automation, and RevenueCat integration; and delivering major cross-platform Flutter work (BillBlaster) including design refinements, admin tooling, and push notification features.
If you come with logs/screenshots (Crashlytics traces, network errors, repro steps), I’ll give you a clear diagnosis and a prioritized fix plan—and if it makes sense, I can execute the fixes as a focused sprint.
I'm versed in most advanced software development methodologies, software creation, integration and adaptation. I bring a wealth of technical expertise and a commitment to delivering high-quality software solutions. My ability to adapt to new technologies and my dedication to continuous learning make me an Ace of the Industry
I’m a Software Engineer with over 5 years of hands-on experience building scalable applications using JavaScript, TypeScript, ReactJS, React Native, and Node.js. I specialize in helping developers at all levels — from beginners to professionals — understand complex concepts clearly and confidently.
As a mentor, I’ve completed successful mentorship sessions publicly and privately with several upcoming developers helping them land a job in tech, that contribution I am proud of. Whether you're debugging an issue, preparing for interviews, or learning full-stack development from scratch, I provide structured guidance tailored to your goals.
I also assist with data structures, algorithms, design patterns, and mock interview preparation — ideal for those getting ready for software engineering roles or competitive programming challenges.
My mission is to make sure every session delivers real value.
An accomplished and high-motivated IT professional with 6+ years experience of IT leadership involved in web development, application development and System & Solution Architecture. My main competency is in building rich client-side applications, on both sides back-end and front-end. I strongly believe in TDD as the only way to build a bullet-proof code that makes everyone happy and it allows me to rest at night. Reaching 100% test coverage is my passion.
**SKILLS:**
✅ Specialities: Computer Engineering, Software Engineer, Web Development, Mobile development, Open Source
✅ Languages:Ruby(6 years), Javascript(4 years), Nodejs(1 year), Elixir(1 year)
✅ Backend Frameworks: Ruby On Rails(6 years), Phoenix(1 year)
✅ Frontend Frameworks: AngularJS(4 years), ReactJS(2 years)
✅ Relational database:Postgresql(6 years), MySQL(6 years)
✅ NoSql databases:Elasticsearch(4 years), Redis(3 years), MongoDB(3 years)
✅ Other technologies:Rabbitmq, Redux, Universal rendering, HTML, CSS, SCSS,
BEM, Docker, AWS, Google Cloud Platform, Webpack, Git, Progressive web apps
**LINKS:**
https://github.com/mpospelov
https://stackoverflow.com/users/2460416/mpospelov
https://codementor.io/mpospelov
https://www.upwork.com/o/profiles/users/_~0182077648cc549f21/
https://www.toptal.com/resume/mikhail-pospelov
I have over 8 years of experience building applications. I think my main ability is the way I manage things so patiently. I have experience building backend systems using Node.js, python and both SQL and NoSQL databases, Consultation, Product Management and blockchain based applications over Ethereum, Solana, Aptos and Polygon. I am eager to contribute to your mission with my skills and experiences. I am confident that my technical proficiency, coupled with my proven track record of successfully leading and delivering complex projects, makes me a strong candidate for this position.
I have 8 years of professional experience with software development mostly with Ruby on Rails, React and AWS. In my latest role as a staff software engineer I had the responsibility of keeping our platform performant and resilient while guiding a cross-funcional team of software engineers, designers, and product members to achieve company wide goals.
I'm a full stack software engineer, technical writer and computer science educator. I enjoy testing, debugging, refactoring, application design, maintaining projects and teaching.
My primary technologies are JavaScript, TypeScript, React, Express (PERN stack), Playwright, Puppeteer, Python, Flask and C. See my [Stack Overflow tags](https://stackoverflow.com/users/6243352/ggorlen?tab=tags) for more technologies ordered roughly by my interest and experience.
In addition to Stack Overflow, I'm active on [Code Review Stack Exchange](https://codereview.stackexchange.com/users/171065/ggorlen). Feel free to peek at a few of these reviews to get a sense of the insights I can offer your code.
I'm looking forward to hearing about your project!
_<sub>Profile picture by the wonderful [Emily Huston](https://emilyhuston.github.io) ❤️</sub>_
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Frequently asked questions
How long do Heroku projects normally take?
The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Heroku project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Heroku request on Codementor, check out our article.
How much does it cost to hire a freelance Heroku developer?
We don’t charge anything when you post a freelance hiring request for Heroku developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.
What makes Codementor Heroku developers different?
We do a comprehensive technical and communications screen of all Heroku developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Heroku developers’ user satisfaction rates.
What happens if I’m not happy with the freelancer’s work?
As a platform, we strive to ensure you’re always happy with your Heroku project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.
For more answers to frequently asked questions, see here.