Senior Backend Engineer — Data Systems & APIs (Flexible Time Off)

Alchemy; New York (NY); Sur place; USD 140 000 - 210 000; Plein temps

Avantages offerts par ce poste

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

Résumé du poste

Alchemy is seeking a backend data systems engineer to build and operate ingestion, indexing, storage, and API-serving systems for blockchain data. You will own end-to-end backend components, ensuring data correctness, freshness, and fast querying while collaborating with product and customer-facing teams to meet developer needs.

You will focus on production reliability, performance, and cost, with ownership of monitoring, runbooks, and incident response.

Qualifications

• Track record of designing, shipping, and operating production backend or distributed data systems.
• Strong programming skills in a production backend language, plus experience with databases, indexing, and query performance.
• Experience reasoning about consistency, partitioning, asynchronous processing, and failure recovery.
• Ability to diagnose production problems and improve the system beyond the immediate fix.
• Sound API design judgment, including compatibility, pagination, error handling, and data contracts.
• Clear communication and the ability to turn an ambiguous customer problem into a scoped engineering project.
• Blockchain experience is helpful, but not required.
• You should be interested in learning how chain behavior affects data correctness.

Responsabilités

• Build and operate blockchain ingestion, indexing, storage, and API-serving systems.
• Handle reorganizations, retries, duplicate events, and historical backfills without silently losing or corrupting data.
• Improve query performance and data freshness. Make those properties observable to the team and understandable to customers.
• Extend API capabilities and chain coverage, with tests for differences in chain behavior and data semantics.
• Develop streaming and event-delivery capabilities with explicit guarantees for ordering, replay, and failure recovery.
• Reduce the cost of storing, processing, and serving data through measured changes to architecture and query execution.
• Participate in production support and incident response for the systems you own. Maintain monitoring, runbooks, safe rollouts, and fixes that prevent recurrence.

Connaissances

Backend development

Distributed data systems

APIs design

Databases

Indexing

Query performance

Problem diagnosis

Outils

ClickHouse

Kafka

Description du poste

Alchemy is seeking a backend data systems engineer to build and operate ingestion, indexing, storage, and API-serving systems for blockchain data. You will own end-to-end backend components, ensuring data correctness, freshness, and fast querying while collaborating with product and customer-facing teams to meet developer needs.

You will focus on production reliability, performance, and cost, with ownership of monitoring, runbooks, and incident response.