Blockchain Engineer

Rollco Digital; Singapore; On-site; SGD 70,000 - 100,000; Full time

Job summary

A leading blockchain technology firm in Singapore is seeking a Software Engineer with expertise in Golang and Rust. You will extend the Geth client, develop swap simulators, and optimize transaction performance. Ideal candidates should have at least 3 years of experience and a deep understanding of Ethereum internals. Join a talented team and make a meaningful impact in the blockchain space.

Benefits

Work alongside best in class talent

Company with a solid track record

Opportunity to make a positive impact

Qualifications

• At least 3 years of experience in Software Engineering or System Architecture.
• Proficiency in Golang and/or Rust programming.
• Deep understanding of Ethereum internals and Geth client architecture.

Responsibilities

• Extend or customize the Geth client to index liquidity pools from on-chain state.
• Develop an EVM-based swap simulator to compare swap outcomes across multiple DEXs.
• Implement routing algorithms to determine optimal swap paths.

Skills

Golang

Rust

Ethereum internals

DeFi protocols

Job description

The Role :

• Extend or customize the Geth client (or Rust-based executor) to index liquidity pools directly from on-chain state.
• Develop an EVM-based swap simulator to compare swap outcomes across multiple DEXs(Uniswap, 1inch, ParaSwap, KyberSwap).
• Implement routing algorithms (e.g., graph-based shortest path) to determine optimal swap paths.
• Build high-performance transaction builder to generate, sign, and broadcast raw transactions.
• Benchmark aggregator performance against leading API-based aggregators (1inch, Paraswap).
• Optimize system performance for low latency and scalability.
• Collaborate on building APIs or dashboards for exposing swap routes and analytics.

Ideal Profile :

• You have at least 3 years experience, ideally within a Software Engineer or System Architect role.
• Proficiency in Golang and / or Rust programming.
• Deep understanding of Ethereum internals, EVM execution, and Geth client architecture.
• Experience with blockchain data parsing, state inspection, and transaction simulation.
• Strong knowledge of DeFi protocols, especially Uniswap, Curve, Balancer, and other DEXs.

What's on Offer?

• Work alongside & learn from best in class talent
• Work within a company with a solid track record of success
• Opportunity to make a positive impact