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Top freelance OAuth 2.0 developers available to hire
Full Stack Developer with 8+ years of experience in building high-performance web applications. Proficient in modern JavaScript frameworks like React.js, Angular, and Vue.js, along with backend expertise in Node.js, Express.js, Python, and Django. Adept at optimizing UI/UX with Material UI and Tailwind CSS while ensuring seamless data flow using Redux, Context API, and MobX. Passionate about performance optimization, cloud solutions (AWS), and implementing scalable, secure architectures. Committed to staying ahead of industry trends to deliver innovative and impactful solutions.
Software Developer with over 6 years of experience specializing in back-end engineering. Proven ability to design and build resilient, scalable micro-services using Java, Spring Framework, and cloud-native technologies. Consistently delivers high-performance software that enhances user experience and drives operational efficiency. Open to new challenges in Software Engineering roles.
I am a senior full-stack & DevOps developer with a track record of maintaining distributed infrastructure, recent deep experience in large-scale data pipelines and a growing skillset and interest in applied AI/LLM integration.
My recent work at an e-commerce search engine startup had me building and maintaining scrapers and a data pipeline that ingested over 10M product SKUs into an OpenSearch index, which was used for hybrid vector+lexical product search, enriched with LLM signals extracted as part of the pipeline. I've used reranking techniques like RRF to enhance relevance after retrieval, and RAG/grounding for features that answered personalized user queries with recommendations grounded in real customer reviews.
My earlier work was heavily full-stack and always involved infrastructure where I often built and supported systems end-to-end, very often in context of a regulated market - with great examples like Deckard (PropTech/GovTech), Sick Children's Hospital/RareConnect (Healthcare-adjacent), and Ethoca \[now MasterCard\] (FinTech).
I've also led IaC initiatives at Ethoca (Chef/Ansible, in 2016-17), and even implemented IaC from scratch for two startups - Pastel Labs (Terraform automation of AWS infrastructure for a B2B SaaS and a tutoring marketplace, in 2021), and Rilara (Pulumi for AWS infrastructure of their e-commerce product, in 2025-26).
My startup experience is proven track record of working independently, but I also thrive as part of a team, with most recent example of being part of Deckard's distributed remote engineering team of 25+ people spread across the US and Australian timezones.
Claude Code is part of my everyday workflow, and I am happy to consider myself a relatively-older senior developer who has successfully adapted to an AI-assisted/AI-first SDLC without compromising the quality of my work.
I would be very excited to continue my journey with an opportunity in healthcare or finance, where I could apply my IaC skills while continuing to explore the world of LLM applications to improve user experience in these regulated environments.
Should you have any questions about any of the background I mentioned here or on the attached resume, I would be glad to answer them in an interview at a time of your convenience.
Thank you!
I succeed or your **money back**. 💰
P.S.: I am travelling till August 2, so you can expect delays in response
Diving into, understanding and debugging codebases alien to me is one of my core expertise.
Welcome! 👋 As a Senior Software Engineer, I have sharpened my leadership and problem-solving skills to provide top-notch software solutions. With 8+ years of experience in web development using React.js, Node.js, Vue.js and Python, I have successfully built products used by top NBFCs and unicorns in India. My strengths lie in design, innovation, architecture, development, and deployment of web applications. I have strong operations acumen and can lead software and web development projects from system architecture design to end-to-end engineering and management. With a proven track record, I have effectively managed teams of up to 9 engineers to deliver business services to valued clients.
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How does it work?
We start a 1:1 session.
Both of us join the zoom call.
You start the session timer and pause it.
You share your screen and explain the problem statement.
I do some research if necessary.
We resume the timer and I try to help.
Full refund if I do not succeed.
Experienced Microsoft C# .NET and SQL developer with 18+ years of experience in application development, solution architecture, and mentoring teams. Skilled in designing scalable systems, improving legacy code, and implementing best practices like SOLID principles. Passionate about architecting solutions by understanding the big picture and driving innovation.
Software Engineer with more than 12 years experience mainly with C#, WPF, WCF and Web Development like Node.js, Angular, React also more than 7 years experience with Oracle DB and other databases, SQL , SQLITE and Progress, MongoDB.
Experienced Full Stack & Blockchain & AI/ ML Developer with 10+ years of success building decentralized, real-time web applications and optimizing legacy systems. Specialized in EVM smart contract development, crypto payments, and Web3 integrations (Metamask, WalletConnect, Coinbase Wallet). Also Specialized in LLMs (GPT-4, LangChain, Haystack), RAG pipelines, and intelligent agent workflows. Proven track record in modernizing codebases, scaling blockchain infrastructure, and enhancing UI/UX fsor Web3 ecosystems. Adept at Solidity, Node.js, Golang, React, and cloud-native DevOps. Passionate about revolutionizing digital experiences in music, finance, and identity through blockchain..
I mentor programmers and development teams. I have the skill set to get you out of any development problem. That includes but not limited to: Java, C#, .NET, JavaScript, TypeScript, Python, Spring, Angular, React, and Agile methodologies. I have a focus on writing "clean code", secure coding, and identity management (SAML 2.0 & OAuth 2.0).
Experienced (18+ years) developer and friendly Ruby on Rails and React/Next.js/Redux Developer/Mentor (with passion for helping others learn) | ★ 3,655+ 5 ★ sessions/jobs. 10+ years on top of the Codementor Ranking ★
https://www.codementor.io/ruby-on-rails-experts
I am a Senior Software Engineer from Toronto, currently working as a Ruby on Rails and React/Redux Developer at theScore Inc. I am passionate about helping and mentoring people, especially those who are new to web development and the programming world. I am specialized in explaining the core concepts of Ruby and Rails, Javascript, React, APIs and everything else along with the best practices. I focus on the learning experience of my students and make sure they get exactly what they want. I have excellent academic track records (Bachelor of Science in Computer Science and Masters in Computer Engineering from the University of Toronto) along with strong development and industry experience in Software Development and Web Development (18+ years coding experience in total).
I have helped more than 800 individuals here at CodeMentor (with 3,655+ 5 ★ sessions) with their projects implementation, bug fixes, architecture advices, performance improvements etc. I have worked with a bunch of CEOs and CTOs of YC start-ups and helped them with their projects. Made long term relationships with many of them which I help in a regular basis today.
I have helped a LOT of bootcamp students here at CodeMentor and helped them build their web development career path and getting jobs after the completion of their bootcamp cohorts.
Here at CodeMentor, I have helped people from all levels: From someone who is brand new to programming to 30+ years of experienced Senior Software Engineers, Product Managers and everyone in between. It's been an amazing journey here at CodeMentor for the last 8+ years! :-)
I started programming and solving problems in 2006, at the age of 18. Since then, I wrote programs in a variety of programming languages such as C, C++, Java, PHP, Ruby, Python, Javascript, etc. These days, I use Ruby and Rails and React JS as my primary programming languages and frameworks.
I can help with debugging your issues as well as refactoring your code according to the best practices and conventions out there. Helping people is my passion and motto in life. If you think I can help you in any way, please get in touch!
Specialties:
* Building scalable and performant backend APIs in Ruby on Rails (Active Model Serializer, GraphQL, Grape, Jbuilder, RABL, etc.) for android, iPhone or web applications. (For more than 12 million users).
* Integration of backend APIs with Javascript frontend framework (ReactJS) using JSON Web Token (JWT).
* Built highly scalable Push Notification System for theScore sports application (For ~10 million users).
* Implemented instant player, team and news article search for the theScore and theScore eSports apps which have more than 6 million monthly active users using ElasticSearch and Rails.
* Backend Ruby on Rails Development (With scaling, performance optimizations, database query optimizations, caching best practices, etc.).
* Test Driven Development with clean code and best practices.
* Web Scraping (Nokogiri, Mechanize) (Scrape data from anywhere on the internet!).
* Reverse engineering complex APIs and web applications to write automated scripts to mimic and automate user behaviour and extract required data.
* Explain concepts/solutions clearly and concisely according to the level of the client/student. (Helped over 800 people on CodeMentor with 3,655+ 5 ★ sessions)
* Giving architecture advice for your application. Explain which tools/gems to use and why.
* Setting up SSL certificates for Rails application (Nginx server) on AWS EC2 instance and securing your application.
* Suggesting best practices and focusing on the best learning experience and long-term achievements.
* Showing cool tips and tricks that I have learned over the past 18+ years (and still learning!) as a professional Ruby on Rails developer to be more productive and efficient at work.
* Upgrading Ruby/Rails versions for your existing application.
* Finding bottlenecks and Optimizing performance for your slow Rails applications.
* I can help you to prepare for interviews for Ruby on Rails developer position, or any other Software Development position. I have successfully guided many developers who got their dream jobs after practicing coding interviews with me!
I am a seasoned IT professional with extensive expertise in Python and JavaScript development, proficiently delivering scalable and efficient solutions. My proficiency extends to DevOps practices, where I excel in automating deployment pipelines, ensuring seamless integration, and enhancing overall efficiency. Leveraging cloud technologies, I specialize in designing and implementing robust, scalable, and secure solutions on major cloud platforms. With a solid foundation in both development and DevOps, I bring a holistic approach to building and maintaining cutting-edge applications in cloud environments.
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Frequently asked questions
How long do OAuth 2.0 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 OAuth 2.0 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 OAuth 2.0 request on Codementor, check out our article.
How much does it cost to hire a freelance OAuth 2.0 developer?
We don’t charge anything when you post a freelance hiring request for OAuth 2.0 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 OAuth 2.0 developers different?
We do a comprehensive technical and communications screen of all OAuth 2.0 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 OAuth 2.0 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 OAuth 2.0 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.