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Top freelance System design developers available to hire

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Freelance System design Developer - Olajide Olanrewaju
Freelance System design Developer5.0 (276 reviews)
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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.

Freelance System design Developer - Umair Jameel
Freelance System design Developer5.0 (17 reviews)

● Development in Javascript and its frameworks/libraries like Angular, React, Next.js, Express, Node, Express, mongodb, mongoose etc. ● Full stack development in next.js including frontend, backend and databases. ● Architecture projects from scratch as well as building new features in existing projects. ● Debug and fix errors in existing projects. ● Database architecture using mongodb, postgres, ORMs like prisma and drizzle. ● Implement the best practices of code structure, logic building and making code efficient. ● Follow pure Object Oriented Programming and Data Structures for solving problems. ● REST API development using node and its frameworks (mainly express). ● Know best practices of writing test cases (it includes unit testing and automation testing). ● Decision making in choosing programming languages, frameworks and libraries for a particular project. ● Good communication skills and understanding client requirements. ● Do research and development to stay up to date with new technologies and always keen to adopt better approaches in solving any kind of problem. ● Experience in CI/CD, docker, github actions etc. ● Teaching experience for over 5 years now. These are some projects I have worked on: https://learnwith.flashclass.io/ https://www.getconch.ai/ https://www.blackbox.ai/ https://www.dexhero.io/ https://unation.com/

Freelance System design Developer - Vijay Rangan
Freelance System design Developer

I am an 12-year veteran in software engineering and have spent the majority of my career building full stack applications with NodeJS, Java and React. I specialise in full stack web development, micro services architecture, and distributed systems. Being an AWS Certified Solutions Architect, I have also architected a payment system for a client of my own, built end to end with serverless technologies such as AWS Lambda, AWS DynamoDB and a handful more. I love to work on improving product quality and security of web applications by implementing best practices in frontend and backend development. I enjoy helping others learn more about what they do, whether it's through articles or videos or even just personal mentoring sessions on mentor cruise.

Freelance System design Developer - Mike Schinkel
Freelance System design Developer5.0 (21 reviews)

My current focus is in custom automations with API Integrations on platforms like Microsoft Power Automate and Logic Apps, Zapier, Workato, Make (Integromat), IFTT, Tray.ai, Go High Level, Superblocks, Microsoft, and other similar platforms. I can help configuring workflows directly in these platforms but I excel at implementing Webhook integrations involving completely CUSTOM/BESPOKE functionality of arbitrary complexity hosted on Heroku, Digital Ocean, Vultr, AWS, Google Cloud, Azure or other cloud platform with my preferred development language being **Go _(GoLang)_** with SQL database backends (Postgres, MySQL, Sqlite or MS SQL Server) and I have extensive skills and experience in Docker, Linux, VMware, Github Actions and other CI/CD platforms, and have built Kubernetes Controllers and Operators for clients. I am also a participating volunteer contributing sevearl houurs of my time to the OpenAPI Initiative each week. I am US-based and have 30+ years of business experience during which I have been a software developer, a programming trainer, a marketer and an entrepreneur whose startup was recognized by Inc Magazine as #123 on the Inc 500 list of fastest growing startups in the USA one year. Let me help you make your Automations with API Integrations a success.

Freelance System design Developer - shaikh hamza
Freelance System design Developer

Hi, I'm Hamza Shaikh, a Senior Full-Stack Developer with over 5 years of experience building scalable, AI-integrated web applications. I'm currently at HighLevel, where I’ve led initiatives around intelligent dashboards, natural language querying, and GPT-4-powered automation—delivering measurable impact like reducing support costs by 30% and API latency by 50%. My tech stack spans **Next.js, NestJS, Vue.js, and Hono.js**, along with deep integration experience using **OpenAI, LangChain, and RAG** frameworks to build agentic workflows and intelligent systems. I thrive in greenfield environments where I can take full ownership of a product, from idea to production. I'm passionate about crafting clean, maintainable code and building user-facing tools that solve real problems—especially in fast-paced, AI-driven environments like AI Acquisition. I’m excited about the opportunity to contribute to AI Clients and help entrepreneurs scale their businesses with cutting-edge tools.

Freelance System design Developer - Sarthak Jain
Freelance System design Developer5.0 (7 reviews)

Have 5 years of professional experience in delivering quality softwares to customers. Currently working as an **SDE at Amazon**. _Most lines of code written in Java._ Enthusiastic about Data structures, Algorithms and System Design. Have good experience in making cloud enabled scalable applications. Have been writing code since 9 years now. Focus on building efficient and optimised softwares.

Freelance System design Developer - Jason
Freelance System design Developer5.0 (181 reviews)

Experienced Engineering Manager with a robust background in cloud architecture, agile methodologies, artificial intelligence & automation. Adept at leading engineering teams to deliver high-quality software solutions, optimizing system performance, and fostering a culture of continuous improvement. Expert in scalable multi-application cloud based reliability engineering, debugging, security and uptime management.

Linux System AdministrationDesign PrinciplesMySQLServerFacebookPostgreSQLLambdaElasticsearchJiraCode ReviewDynamoDBCloudWatchCloud9Adobe PhotoshopDocumentDBTradingViewIllustrationAPI GatewayCI/CDLinux Server AdministrationElasticacheProduct StrategyJira/confluenceCustomer CareSecurity softwareDevOpsAWS Cloud InfrastructureHTML/CSSPHPNode.jsGitMongoDBWordPressMeteorLinuxBashAPIShellHTTPUbuntuLoggingAzureVimHerokuGitHubNginxSSHAmazon EC2ProxyAmazon S3phpMyAdminCentOSMongooseMigrationVideo streamingMongoidDebianCloudSmartyUnderscore.jsSSL CertificateAmazonnpmReal-TimeYAMLCorsScalabilitycPanelPackagesGitLabBootstrapMongojsLodashUnderscoreGit branchIron RouterMemcacheVarnishHAProxyRed HatMeteoriteFirewalliptablesAuthPumaDockerUnicornReverse proxyEs6GSAPReactGit webhooksAmazon SESPhp fpmDeployGoogle Cloud PlatformAmazon SQSWiresharkGit pullrequestsMEAN.ioAmazon vpcFirewallsGitHub FlowSpdyReactiveData MigrationCacheBootstrap 3MEAN StackMEAN.jsAmazon RDSPhusion PassengerAws swfAWS Data PipelinesRHELJavaScriptGit flowLoad BalancingMintNginx 1.6Resource optimizationECMAScriptGit hooksViDigitalOceanInfrastructureGit pushAWS OpsWorksAmazon SNSHhvmProxyserverAmazon EBSpfSenseGit pullHttp cachingVim pluginAmazon RedshiftFedoraAshMemcached phpApache ConfigurationAmazon elbBSDPenetration toolsLive StreamingMongolabGh pagesWebminDeployment automationGit rebaseAtmosphereMeteor upDisaster recovery planningData Center OperationsWHMAWS CloudFrontAWS PoliciesAWS VPCBlazeSpacebarsAws sdkAWS DynamoDBFlow routerAmazon elastic beanstalkVim macrosVim scriptsGit commitAmazon linuxMeteor blazeAWS LambdaInfrastructure as CodeTLSOpenBSDBackendlessAWS IoTMeteor pubsubMeteor accountsAws sesAws snsMandrivaMinimongoAmiAmazon machine imageAws amiAmazon amiNmapMetasploitGIMPNetfilterMongoadminAWS EMRAws CodepipelineAws CodebuildAws iamBootstrap 4Financial DerivativesData parsingNew RelicRESTful APIWebsite migrationDigital ForensicsFinancial AnalysisApache HTTP ServerExpress.jsAWS+198
Freelance System design Developer - Raman Trehan
Freelance System design Developer5.0 (288 reviews)

I can help you with the following: -> Design/Implement large scale distributed systems and dive deep into concurrency, communication, availability, scalability, etc. Rather than just knowing Kafka, Redis and Cassandra, it's important to understand what system features you need to put these building blocks together. -> Data structures and algorithms (Leetcode, Topcoder, etc), low level system design (object oriented programming, design patterns) and high level system design (distributed systems, etc). -> Well structured plan and mentorship (short/long term) for interview preparation, conduct mock interviews for software engineers and senior software engineers. I have extensive experience in tech interviews, as a candidate as well as being part of panel team. -> Mentoring for growing into senior software engineering roles. -> Project building (end to end). -> Pivoting from another domain/career into software engineering. -> Other tech topics that you might be interested in (AWS, Kafka, Redis, Databases, etc). About me: I write software and work with distributed systems day-in and day-out. I have worked at Qualcomm in the area of smart vehicles. I have been involved with startups like Dailyhunt to build backend systems end to end; which could scale to the order of 50k+ requests a second. Feel free to block something on my calendar: https://calendly.com/ramantrehan/30min. Kindly ping me on chat when you do so.

Freelance System design Developer - Jonathan Kanaan
Freelance System design Developer - Sven Pedersen
Freelance System design Developer5.0 (5 reviews)

Senior data-focused polyglot software engineer. Built several business intelligence systems + predictive analytics; used NLP + machine learning for metadata enrichment, has linguistic and cultural training, built payment processing systems, used various relational SQL databases and NoSQL. Specialties: Java, Clojure, Ruby, Python, Perl, text processing, data transformation + metadata enrichment, linguistics, automation (including DevOps), pattern recognition and machine learning. Also worked on PHP, Node.js, Backbone, AngularJS, iOS apps, and several other systems

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Frequently asked questions

How long do System design 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 System design 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 System design request on Codementor, check out our article.

How much does it cost to hire a freelance System design developer?

We don’t charge anything when you post a freelance hiring request for System design 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 System design developers different?

We do a comprehensive technical and communications screen of all System design 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 System design 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 System design 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.

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