Hire Top Freelance Distributed Systems Engineering Developers

George Ndu O.

I'm an expert software engineer and I handle application development with PHP (Laravel), Dart (Flutter), Golang, Javascript (VueJs & ReactJs, Nodejs), and Typescript. Github: [github.com/omept](https://github.com/omept) LinkedIn: [linkedIn.com/in/george-onwuasoanya](https://linkedin.com/in/george-onwuasoanya)

Sourav Paul

Sourav is a Senior Software Developer at IBM Research Lab. He is working as a Full-Stack Developer in building highly scalable, resilient distributed systems. Sourav will help you with to prepare coding interviews, System Design for FAANG and other top product companies Have been passionately solving Leetcode, HackerRank, Codechef, Codeforces, Codesignal problems, and enthusiastically solving problems with the analysis of space... ♛ Career Domain - ▪️ Data structures & algorithms. ▪️ Large-scale distributed systems(HLD/LLD). ▪️ E2E Backend system architecture(API Gateways/LB/Cache/DB/Messaging Queues/Microservices). ▪️ REST APIs/Data Streams/Batch Jobs/Event-driven systems. ▪️ Java/Rx/SpringBoot/Hibernate/MySQL/Cassandra/Docker/Kubernetes/CICD/Git/Cloud. ▪️ Software engineering mentorship to the freshers/experienced professionals. ♛ Key Responsibilities - ▪️ Building scalable quality software solutions by designing, writing code, and unit tests through consistent development practices with a focus on continuous integration/continuous deployment, continuous monitoring, and automated testing(TTD/BDD). ▪️ Debugging software components, identifying code defects, and remediating the buggy flow. ▪️ Participating in code reviews and collaborating on best practices with colleagues. ▪️ Enabling the deployment, support, and monitoring of software across test, integration, and production environments. ▪️ Identifying opportunities for adopting new technologies. ▪️ Demonstrating increased self-reliance to achieve team goals. Influencing team members with creative changes and improvements by challenging the status quo and demonstrating risk-taking. ▪️ Effectively interpreting technical & business objectives, functional/non-functional requirements, involved challenges, and articulating solutions. ▪️ Collaborating with a team of Engineers, Scrum Master, and Product Owner to effectively achieve objectives by clearly communicating ideas and concepts. ▪️ Mentoring and guiding junior team members to success within the team. ▪️ Interviewing college grads/senior engineers as part of global hiring events across the org. ```Feel free to reach out for anything related to,``` ▪️ Software Design/Development/Prototyping/Pair coding. ▪️ Web Technologies/API design/Code reviews. ▪️ Career development/Consulting/Training/Mentorship/Interviews in technology/DSA/System Design. ▪️ Business Idea and its transformation into technology.

Rahul Bagai

Rahul Bagai is a senior software engineer with 14 years of experience developing cloud-based solutions for SaaS businesses. Specializing in system architecture, distributed systems, cloud computing, and Python, he currently works at AssemblyAI, focusing on SpeechAI. Previously, he contributed significantly to Meta and led significant projects at Expedia. His career is marked by his technical expertise and leadership in managing complex, impactful projects.

Kirill Erokhin

**Currently accepting students for Racket/Scheme tutoring (special rates available!)** 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.

Jonathan Kanaan

You need someone that knows the ins and outs of technology and UX. I'm an experienced data scientist, software engineer, and user experience designer that has worked for JPMorgan Chase, the United Nations, American Express, AT&T, and Lockheed Martin as well as for several startups and small businesses.

Sudip Maji

Software Engineer with a demonstrated history of working in the software industry. Skilled in developer operations, web applications development and designing distributed systems, micro-services, low latency fault-tolerant services, and managing infrastructure security.

Olajide Olanrewaju

Freelance Distributed Systems Engineering Developer5.0 (219 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.

Gene Zeiniss

With 13+ years in the HighTech industry, including 9 years in FinTech, I specialize in building scalable, high-performance backend systems for eCommerce and financial platforms. My expertise lies in Java, Spring Boot, Microservices, Domain-Driven Design (DDD), and Relational Databases, ensuring businesses have reliable, efficient, and secure infrastructures. Beyond my technical role, I am passionate about mentorship and community impact. I led a Backend Guild, fostering knowledge sharing and best practices across engineering teams. I also co-managed the Tech-Blogging Program at Baot, helping women in tech publish their first technical articles, and served as an Intuit Women’s Network ERG Leader, advocating for career growth and inclusion in tech. Over the years, I played a pivotal role in architectural transformations and financial integrations, including: ✅**Hybrid SDK for Sensitive Data Detection (Intuit)** – Designed a Hybrid SDK that enabled dynamic configuration updates without requiring SDK version upgrades. Extracted validation logic from the SDK and represented it as mathematical expressions. This approach was secured through a patented method: Secure, Dynamically Loaded Input Validation Using Mathematical Expressions. ✅ **Monolith to Microservices Transition (Behalf)** – Led the company’s first microservice transition, mentored other teams, and introduced an Anti-Corruption Layer (ACL) to bridge legacy dependencies and ensure a smooth migration. ✅ **Wells Fargo Integration** – Engineered a seamless connection to enhance payment processing. ✅ **Cross River Bank & PPP Integration** – Led the integration efforts during the pandemic, enabling SMBs to access critical funding through the Paycheck Protection Program (PPP). Now, as a freelance backend engineer, consultant, and mentor, I help businesses architect scalable eCommerce platforms, optimize payment flows, and build robust backend infrastructures tailored to their needs. 💡 What I Offer:🔹 **Backend Development** – Scalable, high-performance Java & Spring Boot applications. 🔹 **Consulting & Mentorship** – Guiding teams on architecture, best practices, and code quality. 🔹 **Code Reviews** – Ensuring clean, efficient, and maintainable codebases. 🔹 **Public Speaking & Thought Leadership** – Sharing insights on backend development, FinTech, and eCommerce. Let’s connect! Whether you need backend expertise, consulting, or mentorship, I’m happy to help. 🚀

Asif Iqbal

Greetings!! This is Asif Iqbal. I am a software engineer based in Toronto, Canada. I am more than happy to help people with solving their coding problems, design issues, databases, interview preparation and providing with any other sort of programming tutorials. My strongest language is Java and SQL. However, recently I have also worked a bit with Python and in the past worked with other languages and tehnologies as well. In general, I am kind of technology agnostic and willing to pick up anything on demand. I have been absorbed in software development and design for the past few years, with an emphasis to back-end, data pipelines, server side development, databases, performance optimization and system analysis. Over the years, I have gained expertise in object oriented programming, design patterns, best practices, reverse engineering, code re-factoring, coding standards, security guidelines, performance tuning, writing high-performance and scalable code, query optimization, finding and fixing critical bugs in existing code-base, and of course, collaborating and working in harmony with other team members. Recently I have been growing interest in big data, data analytics and data management; and looking to pursue a career with an emphasis to these areas. My ideal goal would be to join a team in where I get to pursue a role that is somewhat in alignment with these stuffs, and get to develop in depth expertise in big data engineering by successfully contributing myself as well as collaborating with and gaining knowledge from my team-mates. I am always ready and open to switch to pursue and explore any new tools and technology stack that fits the needs. As for my academics, in 2011, I completed my master's in Software Engineering from McMaster University, Hamilton, Ontario, Canada. Back in 2008, I gained my Bachelor degree in Computer Science and Engineering from Bangladesh University of Engineering and Technology.

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.