| Job Position and Company | Posted | Location | Salary | Tags |
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Bluecubeservices📍 Remote | $104k - $112k | |||
| $147k - $156k | ||||
 ISO 9001 Certified | 400+ students | Learn more | by Metana | ||
Alpaca📍 Remote | $84k - $96k | |||
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Crossmint📍 Remote | $210k - $250k | |||
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Okx📍 Remote | $91k - $110k | |||
Okx📍 Remote | $140k - $144k | |||
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| $110k - $132k |
Backend Engineer (BE + LLM)
We are looking for a Junior Software Engineer who is comfortable working across the full product development stack, including frontend, backend, and AI-powered features.
In this role, you will build internal tools, automation platforms, data-driven products, and AI-enabled workflows. You will work on user-facing interfaces, backend services, APIs, data integrations, and LLM-powered capabilities. We are looking for someone who can move fast, learn quickly, and use AI tools effectively to deliver end-to-end product features.
This is not a pure frontend or pure backend role. We value engineers who can take ownership of a feature from requirement understanding to UI implementation, backend logic, AI integration, testing, and iteration.
Responsibilities
Build and maintain end-to-end product features across frontend, backend, and AI/LLM components.
Develop user interfaces for internal tools, dashboards, AI assistants, automation workflows, and productivity platforms.
Build backend services, APIs, data pipelines, task workflows, and integrations with internal or external systems.
Integrate LLM/AI capabilities into real product scenarios, such as intelligent assistants, RAG workflows, AI agents, automation tools, classification, summarization, and issue analysis.
Use AI coding tools to improve development speed, code quality, testing, and debugging.
Work with product, operations, support, engineering, security, and infrastructure teams to understand user needs and deliver practical solutions.
Participate in product iteration based on user feedback, usage data, and business impact.
Write clean, maintainable code and contribute to documentation, testing, and engineering best practices.
Requirements
- Bachelor’s degree or above in Computer Science, Software Engineering, Engineering, or a related field.
- Solid programming foundation and ability to learn new technologies quickly.
- Hands-on experience with at least one frontend framework, such as React, Vue, Angular, or similar.
- Hands-on experience with at least one backend language or framework, such as Python, Go, Java, Node.js, FastAPI, Spring Boot, Express, or similar.
- Basic understanding of frontend engineering, including component design, state management, API integration, UI debugging, and browser fundamentals.
- Basic understanding of backend engineering, including API design, databases, authentication, async jobs, logging, monitoring, and service reliability.
- Real experience with LLM/AI applications, such as:
- LLM API integration
- Prompt engineering
- RAG
- AI agents
- Tool/function calling
- Workflow automation
- Text classification / summarization / extraction
- LLM output evaluation
- Comfortable using AI coding tools such as Cursor, Claude Code, GitHub Copilot, Cline, OpenCode, or similar tools in daily development.
- Strong ownership, good communication skills, and willingness to work on ambiguous problems.
- Ability to deliver practical solutions with both engineering quality and user experience in mind.
Nice to Have
- Experience building AI-powered products, internal tools, dashboards, workflow automation systems, or data-driven applications.
- Experience with LLM/Agent/RAG frameworks such as LangChain, LlamaIndex, Dify, AutoGen, CrewAI, OpenAI API, Anthropic API, Hugging Face, or similar.
- Experience with vector databases, embeddings, semantic search, knowledge bases, or retrieval systems.
- Experience with observability, monitoring, alerting, incident analysis, DevOps, SRE, or workflow automation.
- Experience with UI/UX design thinking or building usable internal tools from scratch.
- Experience using AI tools to build full-stack features faster, including frontend generation, backend scaffolding, tests, and documentation.
- Personal AI projects, hackathon projects, open-source contributions, or production AI application experience.
- Good technical writing and knowledge sharing habits.
What does a React developer in web3 do?
A React developer in the context of web3 is a developer who is using the React JavaScript library to build user interfaces for decentralized applications (dApps) that run on the Ethereum blockchain
These dApps often use smart contracts to facilitate transactions and other interactions on the Ethereum network
Overall, the role of a React developer in web3 involves using your skills in React development to help build cutting-edge decentralized applications that leverage the power of the Ethereum blockchain
As a React developer in web3, some of your responsibilities might include:
- Integrating the dApp with the Ethereum blockchain. This might involve using tools like web3.js and Ethers.js to connect to the Ethereum network and interact with smart contracts.
- Building the user interface for a dApp using React. This could involve creating components for the various elements of the dApp, such as buttons, forms, and other input elements.
- Implementing features that are specific to decentralized applications, such as handling cryptocurrency transactions and displaying data from the blockchain in a user-friendly way.
- Collaborating with other members of the development team, such as blockchain engineers and designers, to ensure that the dApp functions properly and meets the needs of the end users.