Core Expertise * Backend Developer * Micro services Developer * Banking * Crypto * Healthcare * Agile Methodologies

Senior Software Engineer with over 8 years of experience in building scalable, high-performance back-end systems. From planning, architecting, development and deploying I can build any type of back-end software that you want, expert in Elixir, Node.js, and Golang.

Experienced web/software developer with very wide range of skills, can-do attitude, phenomenal time management skills, 6+ years of experience in the full SDLC and a strong user focus. • Languages: Python, Java, C++, C#, Erlang, PHP, Javascript, Go, Clojure, Lua • Technologies/Frameworks: ◦ Backend - Flask, Django, Spring, Play, Laravel, Lumen, Wordpress, Node.js, ASP.NET MVC ◦ Frontend - Angular, React, Java Swing, HTML5, CSS3, LESS, SCSS, Bootstrap, jQuery, Ajax ◦ Data Storage - MySQL, PostgreSQL, MongoDB, SQLite, Memcached, Redis, Firebase ◦ Platforms - AWS (EC2, S3, Cloudfront, Lambda, API Gateway, DynamoDB, Cloudformation, Cloudwatch, IAM, Cognito), GCP (Compute, App), Kubernetes, Linux, Apache, Nginx, Docker ◦ Architectures - Microservices, Service-Oriented, REST, Layered, Client-Server(n-tier) • IDE: PyCharm, WebStorm, Eclipse, IntelliJ IDEA, Visual Studio, Xcode, Sublime Text • Misc: Google Maps API, payment gateways, CRMs, JWT, Git, Bash, Gulp, CDN, Linux, Terminal, Browser Stack, Jira, Meister Task, Confluence, Trello If you need someone to build/manage/maintain/setup your servers/web services, feel free to contact me.

Greetings! I am Steven Cooper from Elizabeth, New Jersey, United States. I am a highly skilled Linux System Administrator with 10+ years of hands-on experience in managing and optimizing Linux server environments. My expertise extends to a wide range of Linux distributions, including Ubuntu, CentOS, Debian, and Red Hat. I am fit for work DigitalOcean, AWS, Linode, vultr cloud infrastructure. I am dedicated to ensuring the stability, security, and performance of your server infrastructure. Current Skills: Server Administration: Proficient in setting up, configuring, and maintaining Linux servers, ensuring they run smoothly and securely. Security Enhancement: Expertise in implementing robust security measures, including firewalls, intrusion detection systems, and regular security audits. Performance Optimization: Skilled at fine-tuning server performance, optimizing resource utilization, and troubleshooting performance issues. Scripting and Automation: Proficient in Bash, Python, and other scripting languages to automate routine tasks and streamline server management. Server Hardening: Strong knowledge of hardening Linux servers to protect against vulnerabilities and unauthorized access. Backup and Disaster Recovery: Experienced in creating and managing backup solutions, ensuring data integrity and disaster recovery readiness. Monitoring and Alerting: Proficient in setting up monitoring tools like Nagios, Zabbix, or Prometheus to proactively identify and resolve issues. Software Installation and Updates: Expertise in installing, configuring, and updating software packages and applications on Linux systems. Why Choose Me: Proven Track Record: I have a successful track record of managing complex server environments for clients across various industries. Responsive Communication: I believe in clear and timely communication to keep you informed about the status of your servers. Tailored Solutions: I customize solutions to meet your specific needs, whether it's a single server or a large-scale infrastructure. Cost-Efficiency: My services are cost-effective, helping you get the most out of your IT budget. Client Satisfaction: My primary goal is your satisfaction, and I am committed to delivering high-quality service. If you're looking for a Linux System Administrator who can ensure the reliability and security of your server infrastructure, please don't hesitate to contact me. I'm ready to take on your challenges and help your business thrive in the digital world.

Effective with a number of tools. Particularly interested in using Clojure to solve difficult problems, quickly.

I help software teams build reliable backend systems, internal tools, AI integrations, and developer workflows. I’m a senior Clojure / platform engineer with 15+ years of experience across backend development, architecture, infrastructure, and technical leadership. My strongest areas are Clojure, Java, PostgreSQL, Kafka, AWS, Terraform, Docker, Kubernetes, APIs, and internal platform tooling. What I can help with: - Clojure / Java backend development - Claude / AI app integrations and internal AI tooling - MCP-style tool integrations and developer workflow automation - API design and system integration - PostgreSQL-backed backend systems - DevOps, deployment, Docker/Kubernetes, AWS, Terraform - Internal tools, admin systems, dashboards, and engineering productivity improvements - Technical leadership, architecture review, code review, and mentoring I’ve led engineering work in banking, automated fulfillment, betting platforms, and retail/e-commerce environments. I’m comfortable working across backend, frontend, infrastructure, and product-facing requirements, and I can operate both as a hands-on engineer and as a technical lead. I work best with clients who need a senior engineer to take ownership of ambiguous technical problems, design a pragmatic solution, and deliver production-quality software without unnecessary process overhead.

I am a multi-disciplined programmer with over 10 years industry experience. I am an expert at multi-paradigm programming (functional, object-oriented, and logic paradigms), and use the paradigm that is most appropriate for the problem. I study programming languages as a hobby. I am pretty much language agnostic — I don't care too much what language I use, or even if I know it prior to the project — but I do prefer languages that are conducive to a multi-paradigm approach, such as Clojure, Scala, Python, etc. I enjoy learning new things, and am constantly honing my skills. I seek software development jobs that will both exercise the skills I already have, as well as help me develop new skills.

With 9+ years of experience, I help startups and product teams build production-ready frontend systems in React, Vue, Electron, and React Native. I use AI tools like Cursor and Codex to speed up development. Still, the real value is knowing how to keep AI inside safe engineering boundaries: clear requirements, practical architecture, automated tests, code review, and regression checks. My years of team-based development experience help me turn AI-generated output into reviewed, tested, maintainable production code. What I can help you with: 🚀 Fast frontend delivery: from requirement to production with clear milestones 🤖 AI-assisted development: Cursor/Codex workflows for implementation, refactoring, documentation, and test generation 🧪 Testing systems: Playwright scenarios and regression checks for reliable, fast delivery 💳 Payments: Stripe onboarding, checkout, subscriptions, discounts, payouts, and billing management 🖥️ Complex frontend apps: Electron desktop apps, dashboards, internal tools, and admin systems ⚡ Performance optimization: smoother rendering for high-frequency data updates and large datasets Why clients work with me: ✅ Senior frontend experience across React, Vue, Electron, Nuxt, and React Native ✅ Practical AI-assisted workflow without losing control of code quality ✅ Strong testing mindset for critical flows such as payment, onboarding, and checkout ✅ Clear communication, clean code, useful documentation, and predictable handoff ✅ Business-focused mindset: I care about product outcomes, not just code Selected experience: - Built Stripe onboarding, checkout, payment method management, subscriptions, discounts, payouts, and billing interfaces for a production education platform. - Created Playwright test scenarios for critical onboarding and checkout flows. - Supported marketing teams with UTM strategy, GTM tracking, analytics events, and Looker Studio / Databox reporting. - Built and maintained a reusable HTML email template system with 80+ production templates and SendGrid migration support. - Led frontend architecture for a Linux Electron application with high-frequency sensor data rendering, large file uploads, map/tree interaction, and offline deployment constraints. - Mentored frontend developers, reviewed pull requests, selected practical libraries, and built shared UI components. If you need a senior frontend developer who can combine AI speed, test discipline, and production delivery, let’s talk.

I'm an expert web developer, I begin my development from the design process by carrying out UI/UX research and the designing beautiful and modern websites. I also build fully responsive and dynamic websites using Vue.js frontend and Laravel backend. I can also design any company logos or graphics as you may need. Let's bring your idea to life together.

Thanks for checking out my profile! I have lots of experience working with different technologies and I love learning. Here's a few technical things I'm proud of: - M.S. in Computer Science from Georgia Tech - Co-founder and CTO of Vistaly.com - Co-founder and developer of one of the top question apps on the App Store (Party Qs) - Contributor to the aws-cdk library - AWS Certified I love Clojure, JavaScript, serverless technologies, and open-source. You can check out my GitHub @dehli