Sam Sikder

Web Developer Consultant

• Job Details:Built and shipped 5+ responsive web applications using React.js, Vue.js, Tailwind CSS, JavaScript (ES6+), and TypeScript, leading to a 40% reduction in load times and a noticeably smoother user experience. Constructed and maintained 20+ RESTful APIs and backend services with Python (Tornado server, Flask), optimizing database performance for SQL (PostgreSQL, MySQL) and NoSQL (MongoDB), reducing API response times by 30%. Designed and managed GitLab CI/CD pipelines, reducing deployment time by 60% and eliminating 95% of manual deployment errors across multiple environments. Implemented infrastructure automation using Ansible and Molecule, standardizing configuration across 5+ environments and improving deployment stability by over 80%. Optimized performance-critical computations by integrating C++ with Python using Nanobind and applying R-tree spatial indexing algorithms to accelerate complex mathematical and geospatial calculations by up to 50x. Diagnosed and resolved 100+ full-stack issues by conducting root cause analysis and comprehensive testing, resulting in a 70% reduction in system downtime and enhanced system reliability. Contributed to 15+ new features and enhancements based on evolving business requirements and client feedback, improving customer satisfaction by 25%. Collaborated with 4+ cross-functional teams to deliver 15+ scalable features on time.

Freelancer

• Job Details:Delivered 4+ full-stack web applications by designing and implementing both frontend interfaces (Vue.js, Tailwind CSS) and backend APIs (Flask, Laravel), which automated business workflows and saved clients 15+ hours per week. Developed secure, scalable platforms with custom payment integration and product management tools, helping 3+ small business clients automate e-commerce workflows and reduce manual operations by up to 40%. Designed and optimized REST APIs and relational databases (MySQL, PostgreSQL), which resulted in data consistency and reduced server response time by 15%. Configured and deployed applications on cloud-based VPS servers using Linux CLI and Nginx, maintaining 100% uptime during 3+ pilot launches and ensuring smooth go-lives. Worked closely with international clients across 4+ projects to shape technical strategy, clarify scope, and deliver results on time and within budget.