Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m Fereidoon Barikzehi, a full-stack senior software engineer with 10+ years of hands-on experience building and scaling backend systems for SaaS and cloud-native platforms. I’m particularly focused on reliability at scale—designing for high availability, tuning performance under real production load, and keeping architecture clean as systems grow. Recently, I designed and operated a modular multi-module PMIS platform (dide2.com) end to end, achieving strong real-time behavior and operating at 99.5% uptime for 500+ active users. I’ve also improved responsiveness and reduced latency across multiple production applications through targeted query optimization, caching, and systematic performance tuning, while collaborating closely with teams through code reviews, sprint planning, and mentorship.…I’m Fereidoon Barikzehi, a full-stack senior software engineer with 10+ years of hands-on experience building and scaling backend systems for SaaS and cloud-native platforms. I’m particularly focused on reliability at scale—designing for high availability, tuning performance under real production load, and keeping architecture clean as systems grow. Recently, I designed and operated a modular multi-module PMIS platform (dide2.com) end to end, achieving strong real-time behavior and operating at 99.5% uptime for 500+ active users. I’ve also improved responsiveness and reduced latency across multiple production applications through targeted query optimization, caching, and systematic performance tuning, while collaborating closely with teams through code reviews, sprint planning, and mentorship.

Fereidoon Barikzehi

Full Stack Developer, Developer, Back-End Developer, +5





I’m Fereidoon Barikzehi, a full-stack senior software engineer with 10+ years of hands-on experience building and scaling backend systems for SaaS and cloud-native platforms. I’m particularly focused on reliability at scale—designing for high availability, tuning performance under real production load, and keeping architecture clean as systems grow. Recently, I designed and operated a modular multi-module PMIS platform (dide2.com) end to end, achieving strong real-time behavior and operating at 99.5% uptime for 500+ active users. I’ve also improved responsiveness and reduced latency across multiple production applications through targeted query optimization, caching, and systematic performance tuning, while collaborating closely with teams through code reviews, sprint planning, and mentorship.…I’m Fereidoon Barikzehi, a full-stack senior software engineer with 10+ years of hands-on experience building and scaling backend systems for SaaS and cloud-native platforms. I’m particularly focused on reliability at scale—designing for high availability, tuning performance under real production load, and keeping architecture clean as systems grow. Recently, I designed and operated a modular multi-module PMIS platform (dide2.com) end to end, achieving strong real-time behavior and operating at 99.5% uptime for 500+ active users. I’ve also improved responsiveness and reduced latency across multiple production applications through targeted query optimization, caching, and systematic performance tuning, while collaborating closely with teams through code reviews, sprint planning, and mentorship.

Available to hire

I’m Fereidoon Barikzehi, a full-stack senior software engineer with 10+ years of hands-on experience building and scaling backend systems for SaaS and cloud-native platforms. I’m particularly focused on reliability at scale—designing for high availability, tuning performance under real production load, and keeping architecture clean as systems grow.

Recently, I designed and operated a modular multi-module PMIS platform (dide2.com) end to end, achieving strong real-time behavior and operating at 99.5% uptime for 500+ active users. I’ve also improved responsiveness and reduced latency across multiple production applications through targeted query optimization, caching, and systematic performance tuning, while collaborating closely with teams through code reviews, sprint planning, and mentorship.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Beginner

Beginner

Language

English

Advanced

Work Experience

Full-Stack Developer (Team Lead) at Befico

December 1, 2021 - Present

Architected and built dide2.ir, a modular PMIS platform covering project management, procurement, inventory, workflow automation, and reporting. Designed a modular/clean architecture with a configurable workflow & approval engine, role-based access control, inventory & procurement modules, and real-time reporting/notifications. Optimized the data layer and frontend rendering to cut page load times by 40% and improve responsiveness by 50%. Reduced project-tracking latency by 55% by replacing a slower approach with real-time tracking. Led a 6-engineer team for sprint planning and code reviews, delivering a project-planning platform for 400+ users ahead of schedule. Owned uptime and performance across 10+ production applications; performance tuning reduced downtime and improved response times by 30%, saving an estimated $10K/year.

Full-Stack Developer at Freelance

June 1, 2021 - Present

Engineered 5+ full-stack projects ensuring 100% client satisfaction and 15% faster completion times. Redesigned the backend for estekhdam.vip managing 3,000+ monthly users, boosting performance by 65% with enhanced database queries and caching. Implemented patient management system and backend API improving scheduling by 30%. Revamped custom reporting system cutting manual time by 50% and increasing accuracy by 35%. Developed the dide2.ir PMIS for 500+ users leading to 99.5% uptime, 40% faster load times, and 50% improved responsiveness, driving 20% higher engagement.

Full-Stack Web Developer at Befico

May 31, 2021 - July 19, 2025

Promoted to Full-Stack Developer within 12 months and led a 6-member Scrum team delivering a project planning system for 400+ users two weeks early. Streamlined workflows increasing team efficiency by 25% and reducing project delivery time by 15%. Supervised 10+ applications maintaining 80% uptime and 40% downtime reduction. Refined server configurations achieving 30% faster response and reducing costs by $10K annually. Developed real-time event project progress tracking system using SignalR reducing latency by 55%.

Full-Stack Developer (Freelance) at Freelance (Remote)

September 1, 2018 - November 30, 2021

Delivered 5+ full-stack projects for independent clients with 100% satisfaction and completion roughly 15% faster than scoped timelines. Improved backend query performance for a job-listing platform used by 3,000+ monthly users by redesigning the query layer and adding caching, reducing response times by 65%. Built an end-to-end scheduling API for a medical practice and a reporting tool for an engineering firm as the sole engineer. Applied event-driven patterns to isolate failures across shared client infrastructure.

Full-Stack Developer at Freelance

September 1, 2018 - November 1, 2021

Delivered 5+ end-to-end full-stack projects for independent clients with 100% satisfaction, completing engagements about 15% faster than scoped timelines. Solved backend query bottlenecks for a job-listing platform (3,000+ monthly users), cutting response times by 65% using query redesign and caching. Built a scheduling API for a medical practice and a reporting tool for an engineering firm as the sole engineer. Introduced event-driven patterns to isolate failures across shared client infrastructure.

Junior Software Developer at Wira

August 31, 2018 - July 19, 2025

Refactored legacy ASP.NET and Windows Forms apps, cutting data load times by 40% and enhancing performance by 50%. Built Best Practices and Solutions System reducing report generation time by 70% for 100+ stakeholders. Elevated customer satisfaction by 70% through system response time improvements and user experience optimizations.

Software Developer at Wira

November 1, 2016 - August 1, 2018

Refactored legacy applications that were reducing team velocity, improving performance by 50% and cutting load times by 40%. Built a best-practices tracking system for a government natural-resources organization, reducing their reporting turnaround by 70%. Worked on modernization and maintainability improvements to increase delivery speed for the team.

Software Developer at Asia System

October 31, 2016 - July 19, 2025

Architected N-Layered backend for multiple applications enabling scalability and reducing development time by 50%. Mentored developers improving code quality by 35% and reducing production issues. Led development on e-commerce, salon, and meeting management systems achieving 90% on-time completion and 70% client satisfaction increase. Implemented caching reducing server load by 40%. Developed student service tracking for 10,000+ users reducing response times by 40% and boosting retention by 15%. Collaborated with cross-functional teams increasing delivery speed by 25%.

Software Developer at Asia System

May 1, 2012 - October 1, 2016

Designed a layered backend architecture reused across multiple client products, cutting feature delivery time by 50% for the broader team. Led a student-services tracking system for 10,000+ users, improving retention by 15% and response times by 40%. Mentored newer developers on code review and testing practices to strengthen engineering quality.