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I'm a product-minded Software Engineer and lifelong learner passionate about solving business problems through scalable and complex systems. I combine technical depth with analytical thinking to deliver impactful solutions—bridging the gap between technical execution and product strategy to create meaningful outcomes. Experienced across fintech, social media, blockchain, and more.…

Sayyid Shalahuddin

Developer, AI Engineer, Blockchain Developer, +5

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I'm a product-minded Software Engineer and lifelong learner passionate about solving business problems through scalable and complex systems. I combine technical depth with analytical thinking to deliver impactful solutions—bridging the gap between technical execution and product strategy to create meaningful outcomes. Experienced across fintech, social media, blockchain, and more.…

Available to hire

I’m a product-minded Software Engineer and lifelong learner passionate about solving business problems through scalable and complex systems.

I combine technical depth with analytical thinking to deliver impactful solutions—bridging the gap between technical execution and product strategy to create meaningful outcomes. Experienced across fintech, social media, blockchain, and more.

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

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Advanced

Work Experience

Independent Contractor

July 1, 2025 - Present

Designed and developed end-to-end AI-powered solutions, including Retrieval-Augmented Generation (RAG) pipelines, workflow automation, and intelligent chatbots to improve operational efficiency. Built scalable APIs and microservices integrating AI/ML models with modern stacks including Python, FastAPI, Node.js, Next.js, React, and Go. Implemented automation systems to reduce manual effort by up to 40%. Developed and deployed blockchain-based applications, including decentralized identity verification and tokenized assets. Collaborated with cross-functional teams to deliver production-ready applications combining AI, Web3, and cloud infrastructure.

Lead Developer at Setlary

July 1, 2025 - August 29, 2025

Led a cross-functional development team in building a fintech platform ensuring seamless and high-performance user experience. Designed and developed a scalable system enabling third-party integrations to expand the platform ecosystem. Worked directly with product and design teams to translate business requirements into innovative, user-friendly solutions. Optimized system architecture and performance, reducing load times and improving reliability by 25%. Implemented robust security measures to ensure compliance with fintech regulations and enhance data protection.

Tech Lead at LINKUPP Pte. Ltd

May 31, 2024 - August 29, 2025

Led technical and overseas teams in developing and launching a high-performance social media application, resulting in a 30% uplift in user engagement. Spearheaded debugging and app performance optimization, achieving a 25% improvement in speed and reliability. Transformed designs and wireframes into high-quality code to improve aesthetics and user experience. Integrated external data sources and REST APIs to enhance app functionality and user interaction. Pioneered adoption of cutting-edge technologies, increasing development efficiency by 20%.

Team Lead Developer at PRESTISA

January 31, 2024 - August 29, 2025

Developed and launched innovative applications, resulting in a 40% user base growth within the first year. Led the team in identifying and resolving app performance issues, enhancing stability by 15%. Converted designs and wireframes into functional code, significantly improving app interface and navigation. Utilized external data sources and REST APIs to enrich app content and functionality. Implemented new technologies, increasing development speed and efficiency by 18%.

Mobile Developer at COOP ACCESS

January 31, 2022 - August 29, 2025

Engineered and maintained multiple scalable mobile applications, boosting overall performance by 20%. Conducted comprehensive testing for app endurance, usability, and stability, enhancing user satisfaction by 25%. Translated designs and wireframes into efficient code, elevating app quality and responsiveness. Ensured optimal app performance, leading to a 10% increase in positive user feedback.

Independent Contractor at Self-employed

July 1, 2025 - Present

Designed and developed end-to-end AI-powered solutions, including Retrieval-Augmented Generation (RAG) pipelines, workflow automation, and intelligent chatbots to improve operational efficiency. Built scalable APIs and microservices integrating AI/ML models with modern stacks (Python, FastAPI, Node.js, Next.js, React, Go). Implemented automation systems to streamline business processes, reducing manual effort by up to 40%. Developed and deployed blockchain-based applications, including decentralized identity verification and tokenized assets. Collaborated with cross-functional teams to deliver production-ready applications combining AI, Web3, and cloud infrastructure.

Lead Developer at Setlary

June 1, 2024 - July 1, 2025

Led a cross-functional development team in building a fintech platform, ensuring a seamless and high-performance user experience. Designed and developed a scalable system enabling third-party integrations and expanding the platform’s ecosystem. Worked directly with the product and design teams to translate business requirements into innovative and user-friendly solutions. Optimized system architecture and performance, reducing load times and improving reliability by 25%. Implemented robust security measures to ensure compliance with fintech regulations and enhance data protection.

Tech Lead at LINKUPP Pte. Ltd

July 1, 2023 - May 31, 2024

Led both the technical and overseas teams in developing and launching a high-performance social media application, resulting in a 30% uplift in user engagement. Spearheaded the debugging and optimization of app performance, resulting in a 25% improvement in speed and reliability. Transformed designs and wireframes into high-quality code, improving app aesthetics and user experience. Integrated external data sources and REST APIs to expand app functionality and user interaction. Pioneered the adoption of cutting-edge technologies, boosting development efficiency by 20%.

Team Lead Developer at PRESTISA

November 1, 2021 - January 31, 2024

Developed and launched innovative applications, achieving a user base growth of 40% within the first year. Led the team in identifying and resolving app performance issues, enhancing stability by 15%. Converted designs and wireframes into functional code, significantly improving the app interface and navigation. Utilized external data sources and REST APIs to enrich app content and functionality. Implemented new technologies, increasing development speed and efficiency by 18%.

Mobile Developer at COOP ACCESS

August 1, 2019 - January 31, 2022

Independent Contractor at Self-Employed / Independent Contractor

July 1, 2025 - Present

Designed and developed end-to-end AI-powered solutions, including Retrieval-Augmented Generation (RAG) pipelines, workflow automation, and intelligent chatbots to improve operational efficiency. Built scalable APIs and microservices integrating AI/ML models with modern stacks (Python, FastAPI, Node.js, Next.js, React, Go). Implemented automation systems to streamline business processes, reducing manual effort by up to 40%. Developed and deployed blockchain-based applications, including decentralized identity verification and tokenized assets. Collaborated with cross-functional teams to deliver production-ready applications combining AI, Web3, and cloud infrastructure.

Independent Contractor at Independent Contractor

July 1, 2025 - Present

Designed and developed end-to-end AI-powered solutions, including Retrieval-Augmented Generation (RAG) pipelines, workflow automation, and intelligent chatbots. Built scalable APIs and microservices integrating AI/ML models with modern stacks (Python, FastAPI, Node.js, Next.js, React, Go). Implemented automation systems to streamline business processes, reducing manual effort by up to 40%. Developed and deployed blockchain-based applications, including decentralized identity verification and tokenized assets. Collaborated with cross-functional teams to deliver production-ready applications combining AI, Web3, and cloud infrastructure.