Senior Backend Platform Engineer - Remote (US East)

Mosaic.tech; New York (NY); On-site; USD 198,000 - 295,000; Full time

Job summary

Hex Technologies is seeking a Senior or Staff-level software engineer for the Backend Platform team. You will work on the core compute platform powering code execution, SQL querying, and data processing across the Hex application, balancing performance with developer productivity.

Responsibilities include building data systems, caching, and multi-language instrumentation, with a remote-first setup within the US and an option to use the NYC office.

Qualifications

• 6+ years of engineering experience on complex data-driven systems.
• Expert-level Python and SQL; experience with Jupyter kernels and data warehousing.
• Strong understanding of data processing trends, databases, and architectures.
• Ability to design elegant abstractions to improve correctness and productivity.
• Experience in remote-first teams and strong communication in this context.

Responsibilities

• Contribute to Backend Platform on projects spanning data systems to notebook frontend.
• Build and optimize compute, SQL, and data processing workloads.
• Design caching, graphs-based dependencies, and performance instrumentation.
• Collaborate across teams to deliver fast, reliable backend services.

Skills

Python

SQL

Jupyter kernels

Data warehousing

Performance optimization

Tools

Postgres

Redis

Kubernetes

GraphQL

AWS

Job description

Hex Technologies is seeking a Senior or Staff-level software engineer for the Backend Platform team. You will work on the core compute platform powering code execution, SQL querying, and data processing across the Hex application, balancing performance with developer productivity.

Responsibilities include building data systems, caching, and multi-language instrumentation, with a remote-first setup within the US and an option to use the NYC office.