Blockchain Engineer

Mono Protocol; United Kingdom; Remote; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Competitive salary

Flexible, remote-first policy

Generous PTO

Equipment & home office stipend

Professional development budget

Health & wellbeing support

Transparent culture

Job summary

A decentralized protocol company is looking for a Blockchain Engineer to build and maintain SDKs, APIs, and indexers. The ideal candidate should have strong backend engineering skills in Node, Go, Rust, or Python, as well as experience in API development and on-chain data indexing. This role offers a competitive salary, flexible remote work options, generous PTO, and professional development support, making it an attractive opportunity for passionate engineers.

Qualifications

• Strong backend engineering skills in Node, Go, Rust, or Python.
• Experience building APIs and SDKs for decentralized protocols.
• Familiarity with on-chain data indexing and GraphQL.
• Production deployment, monitoring and observability experience.

Responsibilities

• Build and maintain SDKs, APIs, indexers and developer docs.
• Work with The Graph, subgraphs, or custom indexers for on-chain data.
• Ensure reliable node/RPC infrastructure and developer experience.

Skills

Backend engineering (Node/Go/Rust/Python)

API development

SDK building

On-chain data indexing

GraphQL

Production deployment

Monitoring and observability

The Graph

Tools

GraphQL

The Graph

Job description

• Strong backend engineering (Node/Go/Rust/Python), experience building APIs and SDKs.
• Familiarity with on-chain data indexing and GraphQL.
• Comfortable with production deployment, monitoring and observability.

Nice to have:

• Experience building public SDKs, developer portals or sample apps.

Position Flow:

• Build and maintain SDKs, APIs, indexers and developer docs.
• Work with The Graph, subgraphs or custom indexers for on-chain data.
• Ensure reliable node/RPC infrastructure and developer DX.

What We Offer:

Competitive salary (market-aligned & location adjusted).

Flexible, remote-first policy – work where you're most productive.

Generous PTO and public holiday policies (location dependent).

Equipment & home office stipend to set you up for success.

Professional development budget + conference allowance.

Health & wellbeing support – benefits or stipends where applicable by country.

Transparent culture: regular all-hands, clear milestones, early-stage influence.

Ready to build the future of decentralized protocols? Join us as a Blockchain Engineer!