Blockchain Developer Job November 2025

As a Mid-Level Blockchain Developer in our Engineering department, you will be at the forefront of designing and implementing robust decentralized solutions. Your core responsibilities will include:

• Extracting, normalizing, and securely storing critical data from various blockchain networks, including Ethereum, L2s like Arbitrum, and Solana, along with relevant DeFi protocols.
• Designing and implementing highly secure Solidity/EVM smart contracts to facilitate data adapters, robust allocation validation, and efficient rule evaluation within decentralized financial systems.
• Building and maintaining essential backend services that seamlessly integrate on-chain data with our internal systems and external APIs.
• Developing robust and thoroughly testable logic for event ingestion, sophisticated data orchestration, and secure state transitions.
• Implementing advanced security features such as access controls, pausability mechanisms, comprehensive monitoring solutions, and meticulous on-chain and off-chain audit trails.
• Collaborating closely with product and engineering teams to design resilient, auditable, and fully automated financial workflows.
• Contributing to shared libraries and continuously improving tooling for data ingestion, validation, and in-depth analysis.

We are looking for a proactive and detail-oriented professional with a strong foundation in blockchain development. Essential qualifications include:

• Strong proficiency in Python for data processing, backend services, and automation tasks.
• Extensive hands-on experience with Solidity, EVM tooling (e.g., Hardhat, Foundry, Truffle), and practical DeFi integrations.
• Practical experience with decentralized data indexing tools such as The Graph (subgraphs), Alchemy, Infura, Dune, Flipside, or other custom indexing solutions.
• A solid understanding of decentralized data models, event-driven architectures, and effective data indexing strategies.
• A proven track record of writing clean, maintainable, and secure code, accompanied by thorough testing and rigorous code reviews.
• Experience in owning deliverables end-to-end and a proven ability to thrive in distributed, asynchronous team environments.
• A strong background in fintech, data engineering, or DeFi infrastructure development.

**Desirable Skills:**

• Proficiency in C++ or Java for developing performance-sensitive components.
• Experience with formal verification, managing bug bounty programs, or coordinating security audits.
• Familiarity with time-series and relational data models.
• Exposure to infrastructure basics, including containers (Docker) and Infrastructure as Code (Terraform); knowledge of Kubernetes is a plus.
• Clear, structured communication, strong ownership, and the ability to break down complex problems to deliver independently while being a reliable team player.

To apply for this exciting Blockchain Developer role, please click the button below. In the application form, we encourage you to highlight your experience with Solidity, DeFi integrations, and any projects where you’ve contributed to decentralized data systems. We look forward to reviewing your application and learning how you can contribute to Archon Labs.

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Q1: What is the application deadline for this position?
The closing date for applications is **December 10, 2025**. We encourage you to apply as soon as possible to be considered.

Q2: Is this a remote or onsite position, and where is Archon Labs located?
This is an **onsite** position based in **San Francisco, United States**. We foster a collaborative in-person work environment.

Q3: What are the key technical skills required for this Blockchain Developer role?
Candidates must have strong proficiency in **Python** and **Solidity**, extensive experience with **EVM tooling**, and practical use of **DeFi integrations** and **decentralized data indexing tools** like The Graph, Alchemy, or Dune.

Q4: What kind of company culture and benefits does Archon Labs offer?
Archon Labs prides itself on a culture of innovation, collaboration, and inclusivity. We offer competitive healthcare benefits, flexible work hours, professional growth opportunities, and a dynamic environment where every voice is valued. We’re committed to your continuous learning and development.