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Experienced AWS DevOps Engineer with over 6+ years of experience in designing, implementing, and managing cloud infrastructure using AWS services and terraform. Proficient in version control systems like Git and GitHub, with extensive experience in CI/CD pipelines using Jenkins and Maven. Skilled in containerization with Docker, orchestration with Kubernetes, and monitoring with Prometheus and Grafana. Adept at automating deployment processes while ensuring scalability, reliability, and security of cloud-based applications.
I'm Tom, an AI SaaS founder with 8+ years across Python, Go, Java, JavaScript, and C#. I've run 800+ mentoring sessions with a 5.0-star rating across 53 reviews. I mentor hands-on: we look at your actual code, find what's broken, and fix it together. No hand-waving, no generic "just use AI" advice. What I help with: AI/LLM app development (integrations, agents, automation), Python and Go debugging and architecture, dev-to-AI career transition, and indie hacker / SaaS building. Currently building an AI tool for X/Twitter growth in public, day 200+.
Senior Data Scientist with expertise in machine learning, natural language processing, information retrieval, and data engineering. Extensive experience in developing advanced algorithms and solutions across various industries. And, years of tutoring experience!
I started out as a Structural Engineer, graduating from UNIBEN, finishing among the top 5 in my class, before taking a path that led me deep into the world of AI/ML Engineering. That transition wasn't linear, it was built on exposure, experimentation, failure, and a lot of learning along the way. Through it all, one thing has never changed: I'm most alive when I'm at the intersection of technology and real world problems. Growing it, evolving it, building it, scaling it. That obsession has shown up in the work, from building the first-ever AI-powered RFP at TalkDEI, to finishing in the top 5 globally at Hamoye, to consistently scoring 98/100 on technical assessments. I've also had the privilege of mentoring and teaching over 5,000 individuals across various skillsets.
I started my career as a web developer 16 years ago. I like challenges where I can use my skills to develop outstanding web applications in look, performance, and efficiency. I am specialized in Front-End and back-end web technologies. For more details about technologies I know, see the expertise section below. I can help you with: • New projects or features • Front-End/Back-End development • Mentoring • UX/UI Design • Bug fixes and issue resolving If I missed something you need help with, please drop me a message and I will look for a solution.
Senior Software Engineer and Technical Lead with extensive experience designing and delivering scalable, high-performance software systems across financial services, government and enterprise environments. Strong hands-on expertise in Python, Node.js, TypeScript and Java, with a background spanning distributed systems, microservices, APIs, cloud platforms, Kubernetes and software architecture. Currently focused on AI engineering and machine learning, with hands-on experience developing LLM-powered applications, multimodal AI solutions and privacy-first AI architectures. Experienced with LLMs, local model inference, prompt engineering, speech-to-text and AI/ML integration, including technologies such as Ollama, Hugging Face, LangChain, LangGraph, Whisper and MedGemma. Combines a strong software engineering and system architecture background with practical AI development experience, enabling the design and integration of reliable, scalable and secure AI-powered applications. Experienced in technical leadership, stakeholder collaboration and translating complex technical requirements into practical solutions. AWS Certified Solutions Architect.
**I'm Karan, a Senior Mobile Engineer with 9+ years of experience designing and delivering scalable, production-grade mobile applications across iOS and cross-platform ecosystems. I've successfully shipped 50+ applications spanning healthcare, fintech, social networking, education, travel, staffing, AI, and enterprise platforms.** **My expertise includes Swift, SwiftUI, React Native, Flutter, Firebase, Supabase, JavaScript, Node.js, and REST APIs, with extensive experience building cloud-connected mobile systems, scalable backend integrations, and high-performance user experiences.** **I have strong experience developing AI-powered applications using OpenAI APIs, OCR pipelines, real-time communication features, push notifications, analytics, secure authentication, payment integrations, and production-ready mobile architectures. I've worked on real-time systems involving WebRTC, WebSockets, Socket.IO, Firebase real-time services, and low-latency communication workflows for modern mobile applications.** I enjoy owning products end-to-end, from architecture and backend integrations to App Store deployment, performance optimization, scalability, and long-term maintenance. I focus on writing clean, maintainable code while delivering reliable applications that perform well in production for startups and enterprise clients. **Senior Mobile Engineer | iOS Developer | Swift & SwiftUI | React Native | Flutter | WebRTC | WebSockets | Socket.IO | Voice & Real-Time Systems | Firebase | Supabase | OpenAI API | AI Integration | REST APIs | OCR | Mobile Architecture | Performance Optimization | App Store Deployment | 50+ Production Apps | 9+ Years Experience**
Technical cofounder, board member, and seasoned operator with experience building and growing early stage companies (pre-seed to late Series), large scale government and commercial projects, and nonprofits.
Over the last two decades, I’ve led engineering teams to build platforms for millions of users, acted as the technical right-hand to multiple CEOs, and guided startups through to successful acquisitions. I’ve been building with AI since 2017, integrating LLMs in production applications since the 2021 OpenAI GPT-3 Private Beta, and leveraging agentic software development tools from the earliest releases. I've lived through the wild swings of tech trends, from the rapid churn of web frameworks to the current AI boom. But the underlying reality never changes. Underneath the glossy interfaces, systems still rely on the same core computing principles.
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!
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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 LLM 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 LLM request on Codementor, check out our article.
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We do a comprehensive technical and communications screen of all LLM 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 LLM developers’ user satisfaction rates.
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