Senior Blockchain Engineer — Production Web3 Infrastructure

Alchemy Health; New York (NY); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Private Health Insurance

Gym Reimbursement

Commuter Benefits

Flexible Time Off

In-Office Group Meals

Learning & Development Stipend

Company Sponsored Conferences & Events

Books & Audiobook subscription with <i

Job summary

Alchemy Health is seeking a seasoned engineer to advance blockchain infrastructure concepts from idea to production. You will design experiments, read protocol specs and code, and prototype across clients, RPC, indexing, and backend services to prove feasibility and value.

You will evaluate security, cost, and performance, document decisions, and drive production implementations with cross-functional teams. A strong emphasis on collaboration and measurable outcomes is required.

Qualifications

• A track record of taking ambiguous engineering problems through working prototypes and production delivery.
• Deep hands-on knowledge of at least one blockchain: its execution model, transaction lifecycle, state, finality, and failure behavior.
• Strong software engineering skills and experience building backend or distributed systems.
• The ability to read unfamiliar code and specifications, form a testable hypothesis, and design an experiment that can disprove it.
• Experience designing reproducible performance benchmarks and using profiling to distinguish CPU, memory, storage, and network bottlenecks.
• Evidence of careful reasoning about correctness and security, especially where mistakes affect funds or chain state.
• Product judgment: explain who needs a capability, what it improves, and whether the result warrants further investment.
• Clear collaboration and documentation so another team can operate or extend what you build.

Responsibilities

• Identify developer or infrastructure problems that could justify a new blockchain capability or product, working with engineering, Product, and customer-facing teams.
• Define each experiment’s hypothesis, success criteria, constraints, and time limit before building.
• Prototype across the layers the problem requires: blockchain clients, RPC, indexing, transaction infrastructure, backend services, or smart contracts.
• Read protocol specifications and implementation code, then test assumptions with reproducible benchmarks and failure cases.
• Evaluate developer or operational value alongside technical feasibility, security, operating cost, and the effort required to support the system.
• Take validated ideas through production design, testing, rollout, observability, and operational documentation with partner teams.
• Write concise recommendations to continue, change direction, or stop, supported by the experiment’s results.
• Participate in production support and incident response for the systems you ship. Own monitoring, runbooks, and fixes after launch.

Skills

Prototype to production

Blockchain expertise

Backend systems

Code comprehension

Performance benchmarks

Security reasoning

Product judgment

Documentation skills

Tools

Rust

Go

C++

RPC

Job description

Alchemy Health is seeking a seasoned engineer to advance blockchain infrastructure concepts from idea to production. You will design experiments, read protocol specs and code, and prototype across clients, RPC, indexing, and backend services to prove feasibility and value.

You will evaluate security, cost, and performance, document decisions, and drive production implementations with cross-functional teams. A strong emphasis on collaboration and measurable outcomes is required.