Looking for a job

David Marshall

@davidmarshall

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Senior Full Stack Engineer specializing in scalable web applications.

Singapore

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What I'm looking for

I seek senior engineering roles building scalable, real-time, and AI-enabled systems, with a collaborative culture, strong technical ownership, and opportunities to mentor and architect solutions.

Senior Full Stack Engineer with 10+ years of experience building scalable web, blockchain, and AI/ML systems across media & content platforms, fintech/crypto exchanges, Web3/NFT marketplaces, AI product studios, and warehouse automation. Hands-on expertise in JavaScript, React, Angular, Vue.js, Node.js, PHP/Laravel, Python, Golang, Java, PostgreSQL, MongoDB, AWS, and OpenAI APIs. Hands-on experience in system architecture, end-to-end product delivery, smart-contract development, real-time platforms, CI/CD, performance optimizations, compliance integrations, data-driven features that measurably reduce operational costs and accelerate time-to-market, and mentoring engineering teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Cimpatico Studios

Feb 2024 - Jul 2025 (1 year 5 months)

Led development of the Foodcare System and multiple real-time media and AI products, reducing encoding time by 64%, cutting content creation time by 44%, and increasing user engagement by 38%. Established CI/CD and containerized pipelines that lowered infrastructure costs by 28% and improved release reliability by 58%.

React Next.js Laravel Golang AWS Docker OpenAI API GraphQL PostgreSQL

Senior Software Engineer

Vaultoro

Mar 2021 - Feb 2024 (2 years 11 months)

Built Voice AI, trading APIs, and real-time anomaly detection platforms that cut call volume by 42%, reduced order latency by 35%, and lowered false positives by 45%. Refactored monoliths into gRPC microservices and automated custody reconciliation to eliminate 80% of manual tasks.

fastAPI Go PostgreSQL Kafka gRPC Kubernetes Terraform Redis Twilio

Blockchain Developer

Fayre Labs

Jan 2018 - Dec 2020 (2 years 11 months)

Designed and audited ERC-721/1155 contracts and built a cross-chain NFT marketplace that secured 100K+ mints and reduced query latency from 1.2s to 160ms, while automating deployments to cut gas costs by 30%.

Solidity Hardhat React Next.js MongoDB Redis GitHub Actions Smart Contracts

Software Engineer

AutoStore

Dec 2014 - Nov 2017 (2 years 11 months)

Built inventory and order orchestration systems processing 50K+ SKUs and telemetry pipelines streaming 180K messages/minute, improving fulfillment capacity by 57% and reducing inventory lookup time by 77%.