Software Developer, Chainlink & Smart Contracts
A Software Developer focused on Chainlink and smart contracts builds, tests, and deploys decentralized application code and oracle integrations across blockchain networks. This is a sample job description from Excelon Associates that you can adapt as a template for a remote Web3 engineering hire.
What does a Chainlink and smart contracts software developer do?
This developer designs, implements, and optimizes secure decentralized applications and oracle integrations across blockchain ecosystems. The work sits at the center of the crypto and Web3 stack, connecting on-chain contracts to real-world data through Chainlink infrastructure and shaping how decentralized systems behave in production.
In a typical week the role moves between writing contract logic, testing it against attack scenarios, integrating oracle data feeds, and reviewing the work of teammates. Because deployed contracts are immutable and every transaction carries a real cost, the position rewards precision and a security-first mindset more than raw output.
A smart contract is self-executing code stored on a blockchain that runs automatically when set conditions are met. A Chainlink oracle is a decentralized service that delivers external data, such as asset prices or event outcomes, to those contracts, since contracts cannot read off-chain information on their own.
What are the key responsibilities?
- Design and develop smart contracts for blockchain applications, using Chainlink oracles to ensure data security and accuracy.
- Write, test, and deploy contracts on platforms such as Ethereum, BNB Chain, and other networks.
- Build secure, robust contract solutions for use cases including decentralized finance, data verification, and beyond.
- Collaborate with cross-functional teams to build and integrate decentralized applications with Chainlink infrastructure.
- Optimize the performance and scalability of decentralized applications, focusing on oracle integration, data feeds, and off-chain computation.
- Participate in code reviews, holding the team to best practices for security and scalability.
- Stay current with developments in blockchain technology, Chainlink infrastructure, and Web3 standards.
What qualifications are required?
- Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent hands-on experience.
- Proven experience with smart contract development, preferably in Solidity or Rust.
- Strong understanding of Chainlink architecture, oracle networks, and decentralized data feeds.
- Hands-on experience with blockchain technologies such as Ethereum, BNB Chain, or Polkadot.
- Experience developing and integrating smart contracts with Chainlink oracles.
- Solid grasp of decentralized application principles and on-chain architecture.
- Familiarity with Web3 frameworks such as Web3.js, Hardhat, or Truffle.
- Strong analytical and problem-solving skills, with attention to security and performance.
- Clear communication and the ability to work effectively in a fast-paced, collaborative environment.
What skills set the strongest candidates apart?
- Experience with DeFi protocols or other blockchain-based financial applications.
- Familiarity with Layer 2 scaling solutions and cross-chain technologies.
- Knowledge of zero-knowledge proofs, cryptography, and other advanced blockchain concepts.
The core technical stack at a glance
This table summarizes the technologies a strong candidate works with day to day, and the part each plays in shipping decentralized applications.
| Layer | Technologies | Role in the stack |
|---|---|---|
| Contract languages | Solidity, Rust | The core logic that runs on-chain |
| Networks | Ethereum, BNB Chain, Polkadot | Where contracts are deployed and executed |
| Oracle layer | Chainlink data feeds, off-chain computation | Connects contracts to real-world data |
| Dev frameworks | Hardhat, Truffle, Web3.js | Testing, deployment, and dApp integration |
| Advanced concepts | Layer 2 scaling, zero-knowledge proofs, cross-chain bridges | Scalability, privacy, and interoperability |
What does this position typically offer?
- Competitive salary and equity options.
- Flexible working hours and fully remote work.
- Hands-on work with cutting-edge technology across the crypto and blockchain space.
- Professional growth inside a dynamic and innovative team.
A hiring note from Excelon
The hardest part of hiring smart contract developers is verifying real security judgment, not just language familiarity. A candidate who can list Solidity is common; one who can explain how they would prevent a reentrancy attack or audit an oracle dependency is rare. We weigh deployed contracts, audited code, and open source history far more heavily than a polished resume, because in this field the work speaks for itself on-chain.
In smart contract work, code is law and deployments are permanent, so the best developers think like security engineers first and builders second.
Frequently asked questions
Is this a remote role?
Yes. This sample role is fully remote. Blockchain and Web3 teams are often distributed across time zones, so the position is built around asynchronous collaboration and flexible hours rather than a fixed office location.
What programming languages should candidates know?
Solidity is the primary language for Ethereum and EVM-compatible chains, and Rust is common on networks such as Solana and Polkadot. Strong candidates are fluent in at least one and able to read the other.
Do candidates need a computer science degree?
A bachelor’s degree in computer science, software engineering, or a related field is typical, but equivalent hands-on experience is widely accepted. A verifiable record of deployed contracts and open source contributions often carries more weight than the credential itself.
How is a smart contract developer different from a general backend developer?
A smart contract developer writes code that runs on a public blockchain, where deployments are immutable and every transaction costs money. That demands a security-first mindset and careful gas optimization, which sets the work apart from conventional backend development.
How does Chainlink fit into smart contract development?
Chainlink provides decentralized oracle networks that feed external data, such as prices or event outcomes, into smart contracts. Contracts cannot read off-chain data on their own, so oracle integration is essential for any application that responds to real-world inputs.
Need to hire blockchain talent?
Whether you are a business seeking top developers in the crypto and Web3 space or a professional exploring your next role, Excelon Associates can help. Let’s build a stronger, more innovative technical team together.
Other Sample Job Descriptions
Templates you can adapt for your own roles.