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I am a Senior Full Stack Engineer with over 6 years of experience delivering high-performance, secure SaaS and financial platforms. I specialize in Node.js, Python, React, and TypeScript, and I thrive on building resilient, low-latency systems. I enjoy working in agile, remote-first teams and have a track record of implementing CI/CD automation, secure coding practices, and reliable API integrations for crypto, FX, CFD, and DeFi trading. I’m passionate about scalable architectures and real-time validation and Profit Protection mechanisms.…I am a Senior Full Stack Engineer with over 6 years of experience delivering high-performance, secure SaaS and financial platforms. I specialize in Node.js, Python, React, and TypeScript, and I thrive on building resilient, low-latency systems. I enjoy working in agile, remote-first teams and have a track record of implementing CI/CD automation, secure coding practices, and reliable API integrations for crypto, FX, CFD, and DeFi trading. I’m passionate about scalable architectures and real-time validation and Profit Protection mechanisms.

Oliver Lee

Full Stack Developer, Back-End Developer, Front-End Developer, +3

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I am a Senior Full Stack Engineer with over 6 years of experience delivering high-performance, secure SaaS and financial platforms. I specialize in Node.js, Python, React, and TypeScript, and I thrive on building resilient, low-latency systems. I enjoy working in agile, remote-first teams and have a track record of implementing CI/CD automation, secure coding practices, and reliable API integrations for crypto, FX, CFD, and DeFi trading. I’m passionate about scalable architectures and real-time validation and Profit Protection mechanisms.…I am a Senior Full Stack Engineer with over 6 years of experience delivering high-performance, secure SaaS and financial platforms. I specialize in Node.js, Python, React, and TypeScript, and I thrive on building resilient, low-latency systems. I enjoy working in agile, remote-first teams and have a track record of implementing CI/CD automation, secure coding practices, and reliable API integrations for crypto, FX, CFD, and DeFi trading. I’m passionate about scalable architectures and real-time validation and Profit Protection mechanisms.

Available to hire

I am a Senior Full Stack Engineer with over 6 years of experience delivering high-performance, secure SaaS and financial platforms. I specialize in Node.js, Python, React, and TypeScript, and I thrive on building resilient, low-latency systems.

I enjoy working in agile, remote-first teams and have a track record of implementing CI/CD automation, secure coding practices, and reliable API integrations for crypto, FX, CFD, and DeFi trading. I’m passionate about scalable architectures and real-time validation and Profit Protection mechanisms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Romanian, Moldavian, Moldovan

Advanced

Work Experience

Sr Software Engineer at EPAM Systems

March 1, 2023 - October 31, 2025

Architected and developed secure SaaS modules integrating with financial APIs for crypto and FX trading environments. Implemented Node.js and Python-based backend microservices for real-time transaction validation, reducing latency by 40%. Optimized API integration for multi-cloud deployments (AWS, Azure), enhancing global failover resilience and scalability. Integrated WebSocket APIs for live trading data synchronization across multiple brokers and DeFi smart contracts. Built a Profit Protection Engine prototype to validate trade execution profitability considering latency and fee structures. Implemented CI/CD pipelines using GitHub Actions and Docker to automate deployments and streamline MVP iterations.

Sr Full Stack Engineer at Deloitte Digital

February 1, 2023 - February 1, 2023

Developed full-stack financial dashboards with React and TypeScript for analytics and transaction monitoring. Built backend services using Node.js and Express for data aggregation from multiple exchange APIs. Implemented CI/CD pipelines with Jenkins and AWS ECS to ensure zero-downtime deployments across regions. Enhanced data security, compliance and logging to meet financial auditability standards (ISO 27001, SOC 2).

Full Stack Engineer at Cegeka Romania

March 1, 2022 - March 1, 2022

Developed API-based financial platforms supporting crypto and fiat integrations using Node.js and PostgreSQL. Built automated trade validation workflows ensuring consistency between on-chain and off-chain operations. Implemented high-availability multi-cloud systems using Kubernetes and Terraform for distributed trading nodes. Developed secure RESTful APIs for user authentication and transaction signing using JWT and AES encryption. Optimized backend and frontend performance, reducing end-to-end latency by 30% across financial transactions.

Full Stack Developer at WebZap Technologies

May 1, 2020 - May 1, 2020

Developed React and Node.js applications for fintech clients involving API integrations and trade reconciliation modules. Integrated third-party financial APIs for real-time pricing, order management, and transaction history tracking. Automated build and deployment processes using Docker and CI/CD workflows for faster iteration cycles. Collaborated with designers and backend teams to deliver secure and performant interfaces under tight deadlines.

Sr Software Engineer at EPAM Systems

March 20, 2023 - October 31, 2025