Infrastructure Engineer (Blockchain)

Location: Singapore

Company

hirify.global develops and operates blockchain infrastructure, including RPC platforms and block-building systems for the hirify.global ecosystem.

What you will do

• Develop and optimize BSC Builder for transaction and bundle ingestion, block building, bid submission, payment flows, and builder-to-validator integrations.
• Improve backrun and block-construction performance through pathfinding, parallel transaction optimization, EVM simulation, and execution deduplication.
• Build tracking, observability, and storage systems for bids, transactions, bundles, and backruns.
• Implement BSC protocol and hardfork upgrades across Builder and MegaNode, including client/API compatibility and downstream-service adaptation.
• Develop MegaNode components for high-throughput RPC, block/state-diff collection, trace/debug APIs, and lightweight-node infrastructure.
• Diagnose production issues and improve reliability, latency, capacity, monitoring, releases, and incident response across critical RPC and builder services while collaborating with protocol, DevOps, and QA teams.

Requirements

• 4+ years of backend, infrastructure, distributed-systems, or blockchain engineering experience.
• Strong proficiency in Go.
• Strong understanding of concurrent programming, distributed systems, Linux, networking, and production debugging.
• Hands-on experience with EVM-compatible blockchains, including transactions, mempools, EVM execution, JSON-RPC, and full-node operations.
• Familiarity with blockchain client internals such as go-ethereum, BSC, Reth, or comparable node implementations.
• Experience designing and operating high-availability, low-latency production services.
• Ability to investigate ambiguous issues, identify root causes, and deliver robust fixes independently.
• Ability to collaborate across engineering, QA, and operations in a fast-moving environment.

Nice to have

• Experience with Rust, C++, or Java.
• Experience with BNB Smart Chain, BSC Builder, PBS, MEV, block bidding, transaction bundles, or backrun strategies.
• Experience with gRPC, Kafka, S3/object storage, Prometheus, Grafana, Kubernetes, or cloud infrastructure.
• Experience optimizing EVM simulation, transaction execution, RPC trace APIs, or state-diff/indexing pipelines.
• Experience with hardfork upgrades and compatibility work across blockchain clients and downstream infrastructure.
• Experience building public RPC products or developer-facing blockchain APIs.
• Contributions to open-source blockchain infrastructure projects.

Culture & Benefits

• Ownership of production infrastructure at the core of the hirify.global ecosystem.
• Deep technical work across RPC platforms, blockchain clients, MEV, and distributed systems.
• High autonomy, fast feedback loops, and direct impact on platform reliability and performance.
• Competitive compensation and flexible working arrangements.