08/13/2026 updated
100 % available
Senior Full-Stack Engineer | React, TypeScript, Node.js, Python, Web3
Ningbo, China
Only remote
Bachelor of Engineering, Network Engineering - Guangdong Polytechnic College (2020-2024)About me
Full-stack engineer with 5+ years of experience building SaaS, Web3, data and AI-enabled products. I deliver React/Next.js interfaces, Node.js/NestJS and Python services, PostgreSQL systems, APIs, cloud deployments and reliable 0-to-1 platforms.
Backend Engineering
Expertise in TypeScript/Node.js, NestJS, Python, Flask, SQL, PostgreSQL, MySQL, Prisma ORM, REST APIs, OpenAPI/Swagger, relational schema design and data contracts. Delivery of full-stack protocol platforms including smart-contract integration, wallet-based transaction flows and verifiable AI-asset exchange systems.
Distributed Systems & Transaction Infrastructure
Deep knowledge of transaction state machines, idempotency requirements, replay-safe transitions, retry and fallback design, RPC failure handling, reconciliation, failure taxonomy and operational metrics. Design of deterministic transaction lifecycles covering trade intent, escrow, oracle evidence, release, refund, dispute escalation and manual override.
Trading & Digital Assets
Working knowledge of market microstructure, order types and routing concepts, VWAP, rolling backtests, wallet authentication, EVM and Solana account concepts, smart-contract escrow, settlement and oracle validation. Implementation of Python research pipelines using VWAP-based features and rolling-window backtesting for crypto intraday-return signals.
Performance & Testing
Application of mixed precision, adaptive batching, memory monitoring, modular checkpoints, path autodetection, reproducible train/inference pipelines, technical acceptance criteria and failure-path validation to resolve constrained-GPU memory failures and ensure system reliability under resource constraints.
Data & ML Systems
Experience with PyTorch, FATE federated learning, Transformer recommenders, RQ-VAE, multimodal fusion, Pandas, NumPy, scikit-learn, EMD-ARIMA/SVD and model evaluation. Delivery of semantic-ID recommendation pipelines combining visual, text and collaborative signals.
Industrial & Integration Systems
Research and delivery experience in digital twins, predictive maintenance, multi-robot coordination, IoT/Edge architecture, platform-specific adapters and cross-system data workflows. Co-development of invention-patent filings in intelligent manufacturing and fault-prevention scheduling.
Cloud & Delivery
Proficiency in Docker, GitHub Actions CI/CD, Git/GitHub, AWS EC2, S3, RDS and Lambda, Vercel, release criteria and implementation sequencing for production-grade deployments.
Security & Leadership
Knowledge of RBAC, local-first privacy, differential privacy, homomorphic encryption, Sybil and referral-fraud controls, 0-to-1 product ownership, architecture documentation and cross-functional delivery.
API & Integration Architecture
Authoring of OpenAPI contracts, relational schemas, sequence flows and state machines. Building of platform-specific adapters and resilient handling for late, incomplete or conflicting upstream data. Authored 15+ OpenAPI endpoint specifications and 13+ user stories with technical acceptance criteria.
Expertise in TypeScript/Node.js, NestJS, Python, Flask, SQL, PostgreSQL, MySQL, Prisma ORM, REST APIs, OpenAPI/Swagger, relational schema design and data contracts. Delivery of full-stack protocol platforms including smart-contract integration, wallet-based transaction flows and verifiable AI-asset exchange systems.
Distributed Systems & Transaction Infrastructure
Deep knowledge of transaction state machines, idempotency requirements, replay-safe transitions, retry and fallback design, RPC failure handling, reconciliation, failure taxonomy and operational metrics. Design of deterministic transaction lifecycles covering trade intent, escrow, oracle evidence, release, refund, dispute escalation and manual override.
Trading & Digital Assets
Working knowledge of market microstructure, order types and routing concepts, VWAP, rolling backtests, wallet authentication, EVM and Solana account concepts, smart-contract escrow, settlement and oracle validation. Implementation of Python research pipelines using VWAP-based features and rolling-window backtesting for crypto intraday-return signals.
Performance & Testing
Application of mixed precision, adaptive batching, memory monitoring, modular checkpoints, path autodetection, reproducible train/inference pipelines, technical acceptance criteria and failure-path validation to resolve constrained-GPU memory failures and ensure system reliability under resource constraints.
Data & ML Systems
Experience with PyTorch, FATE federated learning, Transformer recommenders, RQ-VAE, multimodal fusion, Pandas, NumPy, scikit-learn, EMD-ARIMA/SVD and model evaluation. Delivery of semantic-ID recommendation pipelines combining visual, text and collaborative signals.
Industrial & Integration Systems
Research and delivery experience in digital twins, predictive maintenance, multi-robot coordination, IoT/Edge architecture, platform-specific adapters and cross-system data workflows. Co-development of invention-patent filings in intelligent manufacturing and fault-prevention scheduling.
Cloud & Delivery
Proficiency in Docker, GitHub Actions CI/CD, Git/GitHub, AWS EC2, S3, RDS and Lambda, Vercel, release criteria and implementation sequencing for production-grade deployments.
Security & Leadership
Knowledge of RBAC, local-first privacy, differential privacy, homomorphic encryption, Sybil and referral-fraud controls, 0-to-1 product ownership, architecture documentation and cross-functional delivery.
API & Integration Architecture
Authoring of OpenAPI contracts, relational schemas, sequence flows and state machines. Building of platform-specific adapters and resilient handling for late, incomplete or conflicting upstream data. Authored 15+ OpenAPI endpoint specifications and 13+ user stories with technical acceptance criteria.
Experience
Professional experience5 - 10 years
Freelancer since2020
Languages
ChineseNative speakerEnglishNative speaker
Project history
Working on a verifiable AI-asset exchange and trust-minimised transaction platform. Designed the service and data architecture for wallet identities, asset records, proof submissions, transaction states, disputes and reputation. Built across the full-stack protocol platform with TypeScript, NestJS, PostgreSQL, Prisma, Docker, smart-contract integration, Wagmi, Ethers.js and RainbowKit. Defined a deterministic transaction lifecycle covering trade intent, escrow states, oracle evidence, release and refund paths, failure handling, dispute escalation and manual override. Structured the verification pipeline for automated endpoint testing, quota validation and proof-hash records. Established delivery and operating metrics for transaction completion, validation accuracy, latency, escalation, model regression and failure-reason analysis.
Three-portal Web3 platform with oracle-verified KPI settlement. Architected a three-portal backend model for creators, projects and administrators, integrating smart-contract escrow, oracle-verified KPIs, RBAC authentication and transaction-state management. Authored 15+ OpenAPI endpoint specifications and 13+ user stories with technical acceptance criteria, ER diagrams, sequence flows and state machines; improved sprint velocity by 35%. Designed replay-safe settlement transitions with evidence requirements, dispute escalation and deterministic fund-release conditions tied to on-chain attestation. Worked with NestJS, PostgreSQL, Prisma, Swagger/OpenAPI, Docker, GitHub Actions and AWS infrastructure.
Multimodal generative recommendation and reproducible ML infrastructure. Built a semantic-ID recommendation pipeline combining 4,096D visual, 1,024D text and collaborative signals with RQ-VAE, cross-modal attention and a causal Transformer. Improved system reliability under resource constraints through mixed precision, adaptive batching, memory monitoring, modular checkpoints, path autodetection and consistent training/inference preprocessing.
Certificates
Two Invention-Patent Filings
SUSTech2025
Bronze Award - Global Top 10
Sony Global University Innovation Challenge2024
Global Top 10 - FinTech Competition
WeBank2024
BEC Higher and IELTS Speaking 7.5
Cambridge English / British Council2024
National Gold Award - Star Plan
AVIC International / Tianma2023