Blockchain Developer (Protocol-Level) — Crypto Job in Miami, Florida
💼 Blockchain Engineer at DRC LLC • 🌍 Miami, Florida • 💰 $110–$150/hour
Role
Blockchain Developer (Protocol-Level)
Salary
$110–$150/hour
Hourly contract • Flexible hours
Country
United States
On-site in Miami, FL
Job posted date
August 20, 2025
Job deadline date
September 12, 2025
Applications close in 23 days
About this Crypto Job
We are building a decentralized social platform—an alternative to Reddit—designed for open participation, censorship-resistance, and credible neutrality. A working Python prototype exists for rapid iteration; production will be implemented in Go and Rust to meet demanding performance and scalability targets. This is a hands-on protocol engineering role: you will design and evolve the core blockchain, not just write smart contracts.
You’ll collaborate in person with the founder in Miami to iterate on the consensus engine, networking stack, and transaction pipeline. If you are passionate about peer-to-peer systems, applied cryptography, and the nuts and bolts of blockchain internals, this Miami-based crypto job offers the rare chance to own major pieces of a new protocol from day one.
What You’ll Do
- Improve and harden the consensus engine, including validator lifecycle, fork choice, and finality rules.
- Optimize P2P networking (peer discovery, gossip/subscription, bandwidth efficiency, DoS resilience).
- Refine transaction handling, mempool policies, and state transition throughput.
- Design abuse-mitigation strategies: rate limits, spam resistance, Sybil defenses, and anti-censorship levers.
- Profile performance bottlenecks and propose architectural upgrades across execution and storage layers.
- Translate the existing Python prototype to production-grade Go/Rust implementations.
- Write clear specifications, benchmarks, and test plans; participate in regular in-person review/testing sessions.
Requirements for this crypto job
- Deep knowledge of blockchain internals: consensus, validators, state transitions, networking.
- Applied cryptography skills (hashing, signatures, key management, merkle trees, light-client proofs).
- Demonstrated contributions to a blockchain protocol or core client (links welcome).
- Production experience in Go and/or Rust; ability to learn from and improve a Python prototype.
- Systems-level performance tuning, observability, and testing rigor.
- Miami-based and available for regular in-person work sessions.
Nice to Have
- Experience with libp2p, QUIC, or custom peer-selection/gossip strategies.
- Background in database internals, storage engines, or state pruning.
- Knowledge of economic security, incentives, and game-theoretic modeling.
- Contributions to open-source cryptography or security-critical systems.
Tech Stack & Tools
Why This Role
Unlike many listings labeled “crypto jobs” that are front-end or smart-contract focused, this position puts you at the core protocol layer. You’ll own meaningful subsystems that directly influence security, liveness, and user experience at scale. If you enjoy the craftsmanship of low-level design and the pragmatism of shipping, this is a rare opportunity to build a new social primitive on the open internet.
How to Apply
- Confirm you are based in Miami and can meet in person regularly.
- Send your GitHub and examples of protocol-level blockchain work (clients, consensus, networking, or cryptography).
- Include your expected hourly rate and availability.
- Apply via the button above or DM only if you meet all requirements.
Frequently Asked Questions
Is this a crypto job focused on smart contracts?
No — this is protocol-level engineering: consensus, validators, and P2P networking. It is not a smart-contract role.
Where is the job located? Can I work remotely?
This is on-site in Miami, Florida. Remote applicants will not be considered.
What experience is required?
Deep experience with blockchain internals (consensus, validator logic, P2P), applied cryptography, and contributions to a protocol or core client. Strong Go/Rust skills are required.
What will I work on day-to-day?
Improving the consensus engine, optimizing network performance, refining transaction handling/mempool, and translating a Python prototype into production-grade Go/Rust.
What is the pay range?
This is an hourly contract: $110–$150/hour, with flexible hours.
How do I apply?
Apply via the official link and include your GitHub, protocol-level work samples, and expected hourly rate. Only Miami-based candidates should apply.
Do you offer relocation or visa sponsorship?
No — candidates must already be in Miami and eligible to work as contractors.