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I am a Senior Full-Stack Engineer with over eight years of experience building scalable platforms in industries such as FinTech, E-commerce, EdTech, and HealthTech. I specialize in React, Node.js, .NET Core, FastAPI, Prisma, and PostgreSQL, having delivered high-performance systems that significantly improved speed and reduced latency. I thrive in Agile environments, communicating effectively and solving problems proactively while mentoring developers and ensuring clean architecture for maintainability. I enjoy collaborating cross-functionally, taking full ownership of features from design to deployment. My passion lies in building efficient, reliable, and user-friendly software solutions that meet business goals and exceed user expectations.…I am a Senior Full-Stack Engineer with over eight years of experience building scalable platforms in industries such as FinTech, E-commerce, EdTech, and HealthTech. I specialize in React, Node.js, .NET Core, FastAPI, Prisma, and PostgreSQL, having delivered high-performance systems that significantly improved speed and reduced latency. I thrive in Agile environments, communicating effectively and solving problems proactively while mentoring developers and ensuring clean architecture for maintainability. I enjoy collaborating cross-functionally, taking full ownership of features from design to deployment. My passion lies in building efficient, reliable, and user-friendly software solutions that meet business goals and exceed user expectations.

Simeon Lai

Full Stack Developer, Developer, Programmer, +2

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I am a Senior Full-Stack Engineer with over eight years of experience building scalable platforms in industries such as FinTech, E-commerce, EdTech, and HealthTech. I specialize in React, Node.js, .NET Core, FastAPI, Prisma, and PostgreSQL, having delivered high-performance systems that significantly improved speed and reduced latency. I thrive in Agile environments, communicating effectively and solving problems proactively while mentoring developers and ensuring clean architecture for maintainability. I enjoy collaborating cross-functionally, taking full ownership of features from design to deployment. My passion lies in building efficient, reliable, and user-friendly software solutions that meet business goals and exceed user expectations.…I am a Senior Full-Stack Engineer with over eight years of experience building scalable platforms in industries such as FinTech, E-commerce, EdTech, and HealthTech. I specialize in React, Node.js, .NET Core, FastAPI, Prisma, and PostgreSQL, having delivered high-performance systems that significantly improved speed and reduced latency. I thrive in Agile environments, communicating effectively and solving problems proactively while mentoring developers and ensuring clean architecture for maintainability. I enjoy collaborating cross-functionally, taking full ownership of features from design to deployment. My passion lies in building efficient, reliable, and user-friendly software solutions that meet business goals and exceed user expectations.

Available to hire

I am a Senior Full-Stack Engineer with over eight years of experience building scalable platforms in industries such as FinTech, E-commerce, EdTech, and HealthTech. I specialize in React, Node.js, .NET Core, FastAPI, Prisma, and PostgreSQL, having delivered high-performance systems that significantly improved speed and reduced latency. I thrive in Agile environments, communicating effectively and solving problems proactively while mentoring developers and ensuring clean architecture for maintainability.

I enjoy collaborating cross-functionally, taking full ownership of features from design to deployment. My passion lies in building efficient, reliable, and user-friendly software solutions that meet business goals and exceed user expectations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Full-Stack Engineer at Pipedrive

March 1, 2025 - August 5, 2025

Worked remotely from Tallinn, Estonia, developing a European CRM platform for FinTech and E-commerce sales teams. Built GDPR-compliant onboarding systems that reduced KYC processing time by 75% and onboarding costs by 32%. Developed real-time product recommender systems that boosted average order value and conversions. Delivered multilingual dashboards with React improving vendor retention, refactored UI components to enhance frontend load speed, and introduced Prisma ORM with Docker testing to improve schema reliability and reduce QA effort. Collaborated in Agile squads to ship features with a focus on scalability, performance, and maintainability.

Middle Full-Stack Developer at Sunrate

August 1, 2021 - August 5, 2025

Remotely contributed to a global B2B FinTech platform for cross-border payments in Singapore. Developed currency exchange microservices, reducing latency by 40% and doubling transaction throughput. Built internal tools to improve compliance review times and delivered consistent user experiences across desktop and mobile using shared React logic. Integrated KYC verification flows to meet AML/PSD2 compliance. Developed batch FX reconciliation services and maintained CLI tools for streamlined data processing.

Full-Stack Developer at Glints

April 1, 2018 - August 5, 2025

Worked in a hybrid role in Singapore on an HRTech platform focused on hiring and workforce development. Built core web pages and server-side logic that enabled candidate workflows. Enhanced frontend interactivity with Vue.js and created analytics dashboards reducing reporting time significantly. Developed REST APIs for syncing external LMS content and supported early DevOps tasks including deployment scripts and logging.