Back-end Engineer
Blocknative is the core development team behind Gas Network and previously provided blockchain infrastructure, open-source tooling, and APIs for gas estimation, mempool data, transaction monitoring, and wallet connectivity. Its team has joined Deloitte, while Blocknative Corporation is ceasing operations and its API services have sunset.
Maintainer signals as of 8/23/2026
Funding history
Projects
About Blocknative
Blocknative developed infrastructure for L1s, L2s, and blockchain builders, including gas prediction APIs, mempool data, L2 decoding, wallet onboarding, transaction monitoring, block building, MEV auctions, and private order flow. The company states that its team has joined Deloitte to drive Web3 innovation across Deloitte’s client portfolio; Blocknative API services and Gas Network were scheduled to cease operations on June 19, 2026.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will architect and build backend products and services, develop expertise in blockchain transaction detection, processing, notification, and analytics, and design, implement, and test backend transaction notification systems and related data pipelines. You will support customer technical inquiries, contribute documentation, learn new technologies, and help guide the product roadmap and development process.
Requirements
- Proficiency with Ethereum and/or EVM core concepts
- 3+ years of engineering experience
- Experience with JavaScript
- Experience with TypeScript
- Experience with Golang
- Experience with Rust
- Experience with Python
- Experience with SQL
- Experience with NodeJS and asynchronous programming techniques
- Experience with PostgreSQL
- Experience with stream processing pipelines and tools such as Redis, Kafka, and fluentd
- Strong ability to collaborate with cross-functional teams
Responsibilities
- Architect and build backend products and services
- Develop expertise in transaction detection, processing, notification, and analytics for blockchains
- Design, implement, and test backend transaction notification systems and related data pipelines
- Support customer technical inquiries
- Contribute documentation and customer-facing assets
- Learn new technologies and techniques
- Guide the product roadmap and development process
- Demonstrate teamwork, integrity, quality, and professionalism
Hiring Process
Application review; call with the recruitment team; call with the hiring manager; group interview with the growth or technical team; reference calls/background checks; offer.
