Hire Top Freelance Distributed Systems Engineering Developers

Olajide Olanrewaju

Freelance Distributed Systems Engineering Developer5.0 (305 reviews)

I am a **Multi-talented** professional adept in **Full Stack Web Development**, **Web Security Research**, and **Robotics Engineering**. As a dedicated Web Security Researcher and ethical hacker, I uncover vulnerabilities and mitigate security risks, bridging the gap between development and cybersecurity. Additionally, as a Robotics Engineer, I design and build sophisticated robotic systems, applying my deep understanding of mechanics, electronics, and programming. Passionate about crafting clean, scalable code and innovative robotics solutions, I contribute to projects that prioritize both robust development, cybersecurity practices, and cutting-edge robotic technology.

Sudipta Kumar Paik

Senior Full Stack Developer with 14+ years of experience using technologies such as Backend: Java, Python, NodeJs, TypeScript and AWS Lambda Framework: Spring Boot, Magnolia CMS, Django, Flask, FastAPI, ExpressJs, AWS SAM Frontend: ReactJs, VueJs, NextJs, NuxtJs, Electron and Bootstrap CSS Database: PostgreSQL, MySQL, MongoDB, DynamoDB, Redis Cloud: AWS S3, Cognito, CDK, EC2, Fargate, Textract, SQS, IAM, Route53, API Gateway, Terraform I have worked as a technical lead and team lead in various companies. I led the development of 14 travel websites which reduced aws cost overhead by 86%. I’ve also crafted innovative solutions for industries such as ridesharing, e-commerce, and healthcare. I continually expand my skill sets to deliver exceptional results. I hold a Bachelor Degree in Computer Science and Engineering and a certificate of AWS Certified Developer Associate from AWS

Krishna Tej Chalamalasetty

I have 8 years of experience in building products , developing microservices and RestAPIs using Java and Python. Throughout my career, I have been instrumental in building multiple successful products and have dabbled with different domains such as SRE. My diverse skill set and ability to deliver high-quality code, combined with my passion for technology and drive to continuously learn, make me a valuable asset to any team. I am confident in my abilities and am always eager to take on new challenges.

Abdullah Al Masud Tushar

# 👋 How Do I Help? Just like a good doctor with a patient. I listen carefully, analyze deeply, and work toward the best solution. When mentoring, I approach with extra care, empathy, and patience. --- # ⚖️ My Work Ethic - **Honesty first**: No false promises, no wasted time. - **Client satisfaction matters most**: I only accept payment when clients are happy with the outcome. --- # 🔗 Find More Details - **LinkedIn**: [linkedin.com/in/rctushar07](https://www.linkedin.com/in/rctushar07) --- # 🌟 Why Choose Me? - **6+ years** in Full-Stack, Cloud & Data Engineering within the tech industry - Contributed to **5 industrial projects**, collaborating within large teams - **10 years of coding experience** and **2000+ competitive programming problems solved** - **10 LinkedIn recommendations** from international clients & teammates - **100+ aspiring professionals mentored** throughout my journey - Featured as **Top Full-stack Python Developer** in Prog.AI Analysis 👉 [Prog.AI Feature](https://www.linkedin.com/posts/prog-ai-hiring_python-python3-javascript-activity-7296196512563257345-Fx11) --- # 🎯 What Do I Offer? ## 💻 Development Services - **Web apps** using Django, Flask, FastAPI, React, NextJs - **N8N Automation** - **Cloud infrastructure development** & serverless apps - Database design & **performance optimization** - Troubleshooting & debugging with clear communication - **Data Engineering** & ETL pipelines - Web scraping, data collection, and visualization - Data ingestion, processing, and transformation for analytics - Workflow automation with **Python scripts** - Custom **Python libraries** & reusable Django apps - Third-party API integration (Stripe, social media, etc.) ## 👨‍🏫 Personalized Mentorship - Guidance for college/university projects & assignments - Short & long term mentorship on **backend, cloud, or data engineering** - Live **1:1 resume review** - Mock **DSA coding interviews** - Code reviews with professional insights - Project planning & management guidance (methodologies, challenges, team dynamics) - Advice on handling **stress & challenges** at work (deadlines, communication, disagreements, etc.) ---

Gianfranco.JS

### [Escuela.dev](https://escuela.dev/en) Learn how to code in Malaga, Madrid or online. Perfect for aspiring developers or career changers. Book a free trial lesson <https://escuela.dev/en/free-class/> ## Generative AI skills: - Text generation (OpenAI, Anthropic, Groq, Amazon Bedrock, Google Gemini models) and offline models such as LLaMA - LangChain, Autogen, CrewAI - DALLE and Stable Diffusion for image generation 🤖 - MongoDB Vector Database for RAG (Retrieval-Augmented Generation) models. ## Software Development skills: - JavaScript and TypeScript (React, React Native, Next.js, Astro) 📱 - NodeJS, GraphQL, REST APIs (Express, Fastify, Mongoose) 🚀 - Web development (SCSS, CSS, HTML) 🌐 - Testing (Jest, Vitest, Playwright) - Python 3 (Flask, FastAPI) 🐍 - MongoDB, PostgreSQL and Redis ## DevOps and SysAdmin skills: - Linux (Ubuntu, Debian and Bash) 🐧 - Virtualization (Docker) 📦 - Amazon AWS, Google Cloud, DigitalOcean, MongoDB Atlas, Vercel ☁️ - Cloud Functions (AWS Lambda, Vercel Edge) 🐑 - Monitoring and Backup (New Relic, Sentry, Coralogix) - Continuous Deployment (CD) and Continuous Integration (CI) (GitHub Actions, Jenkins) 🚀 Open source enthusiast: ❤️ https://github.com/gianpaj ⬅️ Click on the **Let's Chat** button to discuss your goals.

Olly Rennard

Senior software engineer with 10 years of experience delivering scalable and high-impact systems, now bringing that expertise to AI-powered applications. Confident across the stack and fluent in Python, JavaScript, and TypeScript, with a strong grasp of cloud infrastructure and system design. Experience building solutions spanning modern LLM-based systems, deep learning, and classical machine learning, with a focus on integrating these capabilities into real products. Known for learning quickly, solving hard problems, and building pragmatic, reliable software. Right now I'm looking for my next adventure so feel free to reach out to me!

Durotola Iyanu Tomiwa

Dedicated Backend Developer with more than 8 years of hands-on experience analyzing requirements and contributing to all phases of application development according to specifications and project needs through complete software development life cycle. Demonstrated expertise in optimizing performance by fine tuning application modules, streamlining business processes, and enhancing productivity. Skilled in implementing technologies such as Golang, Node.js, java, jQuery, CSS, Express, React.js, MySQL, Postgres, Cassandra, RethinkDB, and MapReduce. Experienced with Microservices architecture for scalability and RESTful services.

Kirill Erokhin

I teach Operating Systems and functional programming fundamentals to CS students and guide fellow professionals through legacy codebase maintenance, practical software architecture, and new language/framework learning skills. For students, I offer two types of sessions - one is a lecture-style session where I can go over course notes/slides on a particular topics and offer additional explanations and examples to improve your understanding of the material. Another type is an assignment take-up session where I can go over a past assignment and guide you through steps to solving it. For working professionals, I offer the following options: * Focused problem-solving sessions - if you have a particular issue that you're stuck with in a project you're working on, I can pair with you over Zoom screen-sharing * Code review - if you cannot understand how to work with part of your codebase or if you'd like a second opinion on work that you've just completed, I can pair with you over Zoom and do a live code review and/or prepare ahead of time and go over my findings on a call * Long-term mentorship - if you would like to learn some more fundamental skills or pick up a framework/design pattern/best practices, I can develop a custom-tailored learning plan that fits your skill level and schedule and offer regular teaching sessions with optional take-home exercises A bit about me --- I am a tech founder and a senior polyglot/full-stack developer, with a passion for teaching and mentorship. In a bit of spare time from my work, I am looking to help fellow software developers get more comfortable with our craft and exercise my teaching skills while I'm at it. So far, I've done a wide range of work - web app front-end and back-end, data pipelines at scale, DevOps/infrastructure, mobile (quite a bit of iOS and previously some Android) and some security. I have a reasonable taste for UI design and user experience, despite that not being my primary specialization. The industries I've worked in so far were heavily concentrated around finance/banking/FinTech and GovTech, although I've also been a founding developer at a couple of B2C startups and learned a lot throughout that experience. My personal research interests include operating systems and programming language theory. As cliche as it sounds, I try to learn something new all the time and I consider this of vital importance to my professional skillset. I always prioritize systems understanding and learning how to learn over memorizing APIs - and it's a philosophy that I try to share with my students as well. Teamwork and constant exchange of expertise with my peers is a close second most important value to me. A software product can be almost meaningless without a team that welcomes learning from failures, encourages curiosity and fosters true human friendships, and empathy both towards each other and towards the customers of the software we create. New client intake process --- 1. Intro/triage call [free of charge] [15 min] - this is a Zoom video call where I try to understand your background, the problem you're looking to solve and whether I believe we'd be a good fit for a productive mentor/mentee relationship. 2. Supplemental terms acceptance - as an independent contractor and not an employee of Arc, I ask my clients to accept a few additional terms that make session time measurement, scheduling and work product acceptance more precise, and further clarify the extent of our mentorship relationship. 3. Creation of Freelance Job/Scheduled Session on Codementor - if you haven't done that yet, I will ask you to create and assign me a freelance job and/or a scheduled session with a precise description of the topics we would be covering. For certain sessions, preliminary preparation may be required - if that is the case, we would discuss the details and estimated time ahead of time and a Freelance Job would be required to cover the effort of the preparation. Availability --- Please take a look at my Codementor calendar to plan intro calls and sessions. Generally, I am available between 3:30pm and 8pm Eastern Time (New York/Toronto), Monday to Saturday, but I try to schedule all of my teaching engagements between 6pm and 8pm whenever possible. *IMPORTANT: Urgent sessions are unfortunately not available at this time.* I am currently working through Codementor as a mentor, and unable to work as an on-call freelance developer. Please also note that I cannot provide consultations over chat - in my experience, it's generally more time-consuming for everyone, and copy-pasting code over chat can get messy. For those reasons, I only work through Zoom video calls with screen sharing. If you have any questions about the process or would like to book a call, I am happy to chat on Codementor - I should be usually available Monday-Saturday, 1pm - 8pm Eastern Time, subject to my other engagements. While I try to respond as soon as I can, I may take up to one business day or longer depending on how busy my schedule might get.

Dato Simó

### Arc.dev profile Senior backend engineer / DevOps / SRE roles. Ex-Google, years of experience working as a freelance developer. ### Codementor profile I studied an MEng in Computer Science in Spain, and moved to Ireland to work at Google as a Site Reliability Engineer for five years. Them I moved in Argentina, to teach in the country’s biggest University. * I have wide experience teaching how to program, and in explaining the foundational concepts of Computer Science. * I can also help delving into more low-level topics like network programming and operating system internals. * Finally, Data Science & Machine Learning is an area of interest, and I can help you in courses that touch these topics.

Jacob Lindahl

I love working with medical technology or anything on the web. I also enjoy ballroom dancing and riding the unicycle. I look forward to working with you!