About Me I am a Senior Full-Stack Developer with over 8 years of experience building scalable enterprise solutions for global industry leaders. Having worked within the engineering teams at Salesforce and Microsoft, I specialize in developing robust cloud architectures and high-performance web applications that serve millions of users. My Core Expertise: Enterprise SaaS: Deep knowledge of Salesforce ecosystem integration and scalable multi-tenant architectures. Full-Stack Ecosystems: Expert in React, Node.js, and .NET Core, with a focus on writing clean, maintainable code. Cloud Infrastructure: Hands-on experience with Azure and AWS to ensure 99.9% uptime and security compliance. What differentiates me? Unlike many developers, I don't just write code; I design systems with a "product-first" mindset. My time at Microsoft taught me the importance of developer experience (DX) and rigorous testing, while my tenure at Salesforce sharpened my ability to translate complex business requirements into seamless user experiences. I bridge the gap between technical complexity and business ROI, ensuring that every project is built to scale from day one. Employment and Project Experience Full-stack Developer | Microsoft Inc. January 2019 – March 2019 Contributed to the development of core web components using TypeScript and C#. Collaborated with cross-functional teams to optimize database queries, reducing latency by 15%. Refined UI/UX patterns to align with Fluent Design System standards. Senior Developer | Salesforce Inc. January 2017 – March 2017 Lead developer for custom Lightning components and Apex integration projects. Architected secure API layers to facilitate seamless data flow between third-party ERPs and the Salesforce Cloud. Mentored junior developers on best practices for cloud-native application security. Why this works (Based on Twine’s Advice): The "Hook": It immediately mentions "Salesforce" and "Microsoft" to build instant authority. Sector Knowledge: It highlights SaaS and Enterprise experience, which is what high-paying clients look for. Markdown Styling: It uses bolding and bullet points to make the bio "scannable"—a key tip from the Twine blog. Chronological Order: It lists your most recent experience first to show current relevance.

Hasan Isufov

About Me I am a Senior Full-Stack Developer with over 8 years of experience building scalable enterprise solutions for global industry leaders. Having worked within the engineering teams at Salesforce and Microsoft, I specialize in developing robust cloud architectures and high-performance web applications that serve millions of users. My Core Expertise: Enterprise SaaS: Deep knowledge of Salesforce ecosystem integration and scalable multi-tenant architectures. Full-Stack Ecosystems: Expert in React, Node.js, and .NET Core, with a focus on writing clean, maintainable code. Cloud Infrastructure: Hands-on experience with Azure and AWS to ensure 99.9% uptime and security compliance. What differentiates me? Unlike many developers, I don't just write code; I design systems with a "product-first" mindset. My time at Microsoft taught me the importance of developer experience (DX) and rigorous testing, while my tenure at Salesforce sharpened my ability to translate complex business requirements into seamless user experiences. I bridge the gap between technical complexity and business ROI, ensuring that every project is built to scale from day one. Employment and Project Experience Full-stack Developer | Microsoft Inc. January 2019 – March 2019 Contributed to the development of core web components using TypeScript and C#. Collaborated with cross-functional teams to optimize database queries, reducing latency by 15%. Refined UI/UX patterns to align with Fluent Design System standards. Senior Developer | Salesforce Inc. January 2017 – March 2017 Lead developer for custom Lightning components and Apex integration projects. Architected secure API layers to facilitate seamless data flow between third-party ERPs and the Salesforce Cloud. Mentored junior developers on best practices for cloud-native application security. Why this works (Based on Twine’s Advice): The "Hook": It immediately mentions "Salesforce" and "Microsoft" to build instant authority. Sector Knowledge: It highlights SaaS and Enterprise experience, which is what high-paying clients look for. Markdown Styling: It uses bolding and bullet points to make the bio "scannable"—a key tip from the Twine blog. Chronological Order: It lists your most recent experience first to show current relevance.

Available to hire

About Me
I am a Senior Full-Stack Developer with over 8 years of experience building scalable enterprise solutions for global industry leaders. Having worked within the engineering teams at Salesforce and Microsoft, I specialize in developing robust cloud architectures and high-performance web applications that serve millions of users.

My Core Expertise:

Enterprise SaaS: Deep knowledge of Salesforce ecosystem integration and scalable multi-tenant architectures.

Full-Stack Ecosystems: Expert in React, Node.js, and .NET Core, with a focus on writing clean, maintainable code.

Cloud Infrastructure: Hands-on experience with Azure and AWS to ensure 99.9% uptime and security compliance.

What differentiates me? Unlike many developers, I don’t just write code; I design systems with a “product-first” mindset. My time at Microsoft taught me the importance of developer experience (DX) and rigorous testing, while my tenure at Salesforce sharpened my ability to translate complex business requirements into seamless user experiences. I bridge the gap between technical complexity and business ROI, ensuring that every project is built to scale from day one.

Employment and Project Experience
Full-stack Developer | Microsoft Inc. January 2019 – March 2019

Contributed to the development of core web components using TypeScript and C#.

Collaborated with cross-functional teams to optimize database queries, reducing latency by 15%.

Refined UI/UX patterns to align with Fluent Design System standards.

Senior Developer | Salesforce Inc. January 2017 – March 2017

Lead developer for custom Lightning components and Apex integration projects.

Architected secure API layers to facilitate seamless data flow between third-party ERPs and the Salesforce Cloud.

Mentored junior developers on best practices for cloud-native application security.

Why this works (Based on Twine’s Advice):
The “Hook”: It immediately mentions “Salesforce” and “Microsoft” to build instant authority.

Sector Knowledge: It highlights SaaS and Enterprise experience, which is what high-paying clients look for.

Markdown Styling: It uses bolding and bullet points to make the bio “scannable”—a key tip from the Twine blog.

Chronological Order: It lists your most recent experience first to show current relevance.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Full Stack Developer (Freelance) at Freelance / Personal Projects
September 1, 2023 - Present
Freelance full-stack web development using React, Node.js, Express.js and MongoDB; integrated REST APIs and secure authentication; built MERN-stack applications; optimized performance and reliability.
Web Developer at Mars Design UK
July 1, 2022 - September 30, 2023
Architected and managed 15+ high-performance WordPress websites with seamless functionality, responsive design, and UX across platforms. Engineered custom WordPress themes and plugins, reducing project turnaround times by ~30%. Implemented comprehensive SEO strategies improving organic traffic by ~40% and search rankings for 20+ sites. Optimized e-commerce operations through large-scale product uploads (500+ products) ensuring data integrity and improving conversion rates by ~15%. Collaborated on cross-functional teams to deliver innovative web development solutions with strict deadlines.
3D Immersive Portfolio Developer at Independent / Personal Projects
November 1, 2025 - December 31, 2025
Architected and deployed highly immersive 3D portfolios showcasing the ability to integrate complex 3D graphics into functional web applications. Engineered interactive environments with lighting, shadow, and camera motion; created fluid animations using Framer Motion and 3D elements for a unique user experience; ensured cross-browser compatibility and robust UI.
Movie Discovery App Developer at Independent / Freelance
November 1, 2025 - December 31, 2025
Developed an interactive movie discovery platform integrating The Movie DB API, enabling users to browse 10,000+ titles with real-time data. Implemented asynchronous data fetching (Promises/Async-Await) and state management to deliver a smooth UX across devices.
Full Stack Developer at Freelance / Self-employed
September 1, 2023 - Present
Architect and deploy MERN stack applications with cloud infrastructure (Vercel, Netlify), ensuring scalability and robust performance. Develop dynamic server-side rendered (SSR) applications with Next.js, optimizing SEO performance and achieving faster page load times. Implement automated end-to-end testing pipelines with Cypress and Jest, improving reliability and accelerating release cycles. Manage client relationships and project timelines, consistently delivering projects on schedule and within budget.

Education

High School Diploma at Turkey
January 1, 2010 - January 1, 2026
High School Diploma at High School (Turkey)
January 11, 2030 - January 1, 2010

Qualifications

Complete Full-Stack Web Development Bootcamp
January 1, 2025 - December 31, 2025
The Complete Full-Stack Web Development Bootcamp
January 11, 2030 - January 1, 2025
JavaScript Course
January 11, 2030 - January 1, 2024
Complete Rigorous 61.5-hour Intensive Program (Udemy)
January 11, 2030 - January 1, 2025

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Retail