Hire Top Freelance Distributed Systems Engineering Developers

Olajide Olanrewaju

Freelance Distributed Systems Engineering Developer5.0 (382 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.

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.) ---

Kirill Erokhin

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!

prashant chavan

Staff Software Engineer with 10+ years of experience building scalable backend systems and distributed platforms. Previously worked at Booking.com, Walmart, and Miro. Specialized in Java, microservices, system design, and cloud technologies, with a passion for mentoring engineers and helping them excel in technical interviews and career growth.

Shrey Agarwal

**Experienced, efficient, flexible, friendly, no charge if I can't help!** **Proven technical interviewing tutor** **Specialize in backend (C#,C++,Java,etc) coding and Azure** I have been a software engineer for the past 12 years at Microsoft, and have been solving problems for much longer than that. I am fast and efficient and will be honest about my expertise and timelines. I have an unbounded passion for anything technology, rising from an insatiable curiosity to learn more. In the plethora of technologies or fields that I already have knowledge of, I will be able to help right away. But rest assured that with me, you don't need to worry about knowledge till date. If I encounter a problem outside of my expertise, I would just jump in to researching everything about it, find pros and cons for all solutions and then helping out with the best one. Note - If pricing is an issue, ping me! We can work something out! :)

Mayckon Giovani

I am a Principal Systems Engineer specializing in post-quantum cryptography, distributed systems, and security-critical infrastructure. My work focuses on designing and building high-performance systems where correctness, security, and resilience are non-negotiable — including blockchain protocols, IIoT platforms, cryptographic infrastructure, and globally distributed backend systems. I operate across the full systems stack, from protocol design and formal methods to low-level implementation in Rust and Go, as well as scalable backend architectures and DevSecOps environments. My primary focus is engineering infrastructure that remains secure and reliable in adversarial and post-quantum threat models. I actively contribute to open-source projects involving post-quantum cryptography, distributed infrastructure, and secure systems engineering. My interests include protocol correctness, formal verification, cryptographic protocol design, and building the next generation of quantum-resilient systems. I am particularly interested in collaborating on deep-tech, cryptography, distributed infrastructure, and security-critical systems where engineering rigor and architectural excellence are essential.

Jonathan Kanaan

Do you need someone that knows the ins and outs of AI, Cloud, Software Engineering, System Scaling, and Design? I'm an experienced AI Engineer, Cloud Expert, Coder, and User Experience Researcher 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. Additionally, I've mentored people running successful startups and working in companies like Anthropic.

Willem Van Onsem

Developer by day, programmer by night. I obtained a master of science in civil engineering (computer science) and participated - together with several teams - in programming contests and hackathlons. I answer questions on StackOverflow on a daily basis and wrote courses on Artificial Intelligence and Digital Electronics. I am mainly interested in Haskell, Python, and Prolog. I worked as a researcher in the field of hyperheuristics (artificial intelligence), a teaching assistant in computer science and as a data scientist and technical lead developer in an AI startup. During my spare time I developed small (and larger) projects to help with daily routine. For me, a computer should aim to automate everything that is boring, such that one can pay more attention to what is interesting in life. After each session, I aim to write a document (usually within one week) that describes what we discussed. The public GPG key can be found here: https://pgp.mit.edu/pks/lookup?op=vindex&search=0x6A148004A6024E2B Usually available between 17:30 - 21:30 UTC (Monday to Friday) and 9:30 - 21:30 UTC (weekend). See for time conversions https://goo.gl/eWdDCG (week days) and https://goo.gl/kdvMsa (weekends).

Lasith Eranda Haputhanthiri

I am an ex Amazon now working on a elite hedge fund; graduated with a Master of Computer Science. I have professional experience in **multiple programming languages** and have designed multitude of application from ground up. I have a lot of experience in designing **scalable distributed systems**. I enjoy providing **thorough code reviews**. I am very keen to find design and coding bugs. I have done lot of technical interviews and has hands on experience in the recruitment process. I have a good track record **training people for technical interviews**.

Arpit Agrawal

Available for: - Technical Mentorship / Career Consulting - Interview Preparation Mock Interviewing (especially with respect to FAANG and similar rated companies). Around 15 years of experience primarily in Backend Development but extended to Front-End (HTML/CSS, JS, React, Angular etc) and Mobile App Development (iOS/ Android). I have worked primarily with Java but have experience working on many other languages like Javascript, Python, Ruby, Objective C, Swift etc.