We are seeking a Senior Backend Software Engineer to build and evolve the data systems that power Babel Street’s enterprise applications.

In this hands-on role, you will design, build, and operate backend services that ingest, process, index, store, and serve large volumes of data. You will collaborate with other engineers to plan feature enhancements, make architectural decisions, and deliver reliable, scalable solutions from design through production.

This position is ideally near our Somerville, MA office but remote candidates will be considered. Eastern or Central time zones are preferred.

Why This Role Matters

Backend Engineering: Design, implement, test, and maintain backend services and data-processing pipelines using C# and .NET.

Data Processing and Search: Build and optimize systems for ingesting, indexing, storing, querying, and serving large datasets using Elasticsearch and SQL Server.

Performance and Scalability: Identify bottlenecks and improve service performance, query efficiency, reliability, and scalability.

Production Ownership: Own services throughout their lifecycle, from technical design and implementation through deployment and ongoing operation.

On-Call Support: Participate in an on-call rotation supporting systems that operate 24/7. Use metrics, logs, and alerts to investigate incidents, resolve issues, and implement improvements that reduce recurrence.

Technical Collaboration: Contribute to architectural discussions, lead design and code reviews, and mentor other engineers.

Development Practices: Evaluate and recommend improvements to our technology, tooling, and engineering workflows.

AI-Assisted Development: Use coding agents and AI-assisted tools for implementation, testing, and refactoring while maintaining accountability for code quality, security, and correctness.

Senior Software Engineer

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Babelstreet

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