About Peddler

Peddler.com / Pedder.express is a fast-growing on-demand marketplace connecting consumers with nearby retailers through real-time product discovery and instant delivery. Operating across major cities with hundreds of thousands of local products, our platform transforms fragmented retail data into structured, searchable, and sellable inventory at scale.

Our engineering team builds highly scalable systems spanning distributed services, intelligent logistics, real-time inventory processing, and modern AI-assisted development workflows.

This role is based in Da Nang, Vietnam.

Responsibilities

Design and build scalable backend services and modern frontend applications
Translate complex business processes into efficient, maintainable engineering solutions
Architect APIs, microservices, and distributed systems with strong reliability and performance
Work with AI-assisted engineering workflows, including LLM agents for:

Code generation
Refactoring
Testing automation
Debugging
Documentation
Developer productivity tooling

Collaborate closely with product, operations, and engineering teams in a fast-paced environment
Contribute to engineering best practices, architecture decisions, and system scalability

Required Skills & Experience

Core Requirements

5+ years of software engineering experience in fast-paced or high-performance environments
Expert-level JavaScript/TypeScript knowledge with deep understanding of Node.js and the V8 engine
Strong understanding of scalable software architecture, asynchronous programming, and non-blocking I/O
Experience building RESTful APIs and microservice-based systems
Familiarity with OAuth 2.0 and JWT authentication
Experience incorporating AI/LLM tooling into software engineering workflows
Strong problem-solving skills with a passion for clean, maintainable, scalable code

Backend Engineering

Experience with transactional systems, persistence layers, and distributed workflows
Strong knowledge of Node.js, Python, or C++
Experience with MongoDB, Redis, GraphDB, or similar persistence technologies
Understanding of design patterns and scalable backend architecture
Bonus:
GraphQL
Functional programming
Native Node.js extensions

Frontend Engineering

Advanced React / React Native expertise
Strong understanding of frontend architecture and performance optimization
Experience with bundle splitting and mobile-first development
Strong UI/UX mindset
Solid CSS architecture skills (SCSS/SASS, BEM, responsive design)
Bonus:
E2E testing
Performance optimization experience

Technologies

Node.js / Python / C++
React / React Native
Docker & Serverless Infrastructure
MongoDB / Redis / GraphDB
AI-assisted engineering and LLM-driven development workflows

Nice to Have

Experience with TensorFlow or applied AI systems
Experience building marketplace or transactional platforms
Strong technical portfolio or open-source contributions

Why Join Us

Competitive salary package (up to $4,000)
Annual salary reviews
MacBook Pro provided
Entrepreneurial and low-bureaucracy engineering culture
International collaboration between Netherlands and Vietnam offices
Strong opportunities for technical growth and career progression
Exposure to cutting-edge AI-assisted software engineering practices

Learn More

https://peddler.com
https://techstartups.com/2018/04/17/cryptocurrency-startup-peddler-com-first-crowd-buying-marketplace-revolutionizing-shopping-digital-currency/
https://www.retailgazette.co.uk/blog/2018/02/5-minutes-james-klymowsky-founder-peddler/
https://www.telegraph.co.uk/connect/small-business/business-solutions/technology-boosting-e-commerce/

Senior Software Engineer (Backend / Frontend)