Senior Blockchain Engineer

Key Responsibilities: Integrate company systems with existing Layer-1 blockchains. Evaluate and, where appropriate, contribute to building or extending Layer-1 capabilities to meet custody, scalability, or resiliency needs. Understand chain-level mechanics such as transaction lifecycle, finality, forks, reorgs, and event propagation. Design and build core blockchain infrastructure services, including indexers, event processors, block explorers, and chain data services. Contribute to wallet architecture and development, including blockchain-facing wallet services and transaction creation/signing workflows. Share responsibility for custody-related blockchain workflows, including on-chain transaction execution and event monitoring. Help define safe patterns for interacting with smart contracts and token standards from custody platforms. Apply modern engineering practices to build reliable, testable, and observable blockchain services.

Required Qualifications: 7+ years of professional software engineering experience. Hands-on experience building or integrating blockchain or distributed ledger systems. Strong understanding of Layer-1 blockchain protocols and transaction lifecycles. Experience building backend services, APIs, and infrastructure components. Proficiency in one or more languages such as Go, Java, Rust, or Python. Ability to work effectively across custody, security, and platform teams.

Preferred Qualifications: Experience with blockchain indexers, explorers, or chain analytics systems. Familiarity with wallet architecture and blockchain signing workflows. Exposure to crypto custody platforms or security-sensitive financial systems. Strong debugging instincts in distributed, asynchronous environments. Experience using AI tooling to support complex software development.

What Success Looks Like: Blockchain integrations are predictable, observable, and resilient. Wallet and transaction pipelines behave correctly across normal and edge-case chain conditions. Custody systems interact with blockchains safely and consistently. Incidents related to blockchain dependencies are well understood and quickly diagnosed. Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including Clearly Rateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.