[Hiring] Senior Software Engineer @Babel Street

Role Description

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.
• Collaborate with other engineers to plan feature enhancements, make architectural decisions, and deliver reliable, scalable solutions from design through production.
• Use AI-assisted and agentic development tools to improve engineering productivity and help strengthen practices for incorporating these tools into everyday development.

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

Qualifications

• 10+ years of professional software development experience building and supporting enterprise applications.
• Strong proficiency in C# and .NET, including designing, building, and troubleshooting production backend services.
• Hands-on experience designing, operating, and optimizing Lucene-based search platforms, preferably Elasticsearch, including index design, mappings, query tuning, and cluster maintenance.
• Strong SQL Server and T-SQL skills, including relational schema design, stored procedures, indexing, and query performance tuning.
• Experience building, maintaining, and scaling data-intensive backend services.
• Experience deploying and supporting production workloads on AWS or Google Cloud Platform.
• Experience troubleshooting production systems using metrics, logs, and alerting.
• Ability to work independently, collaborate effectively on a distributed team, and communicate technical decisions clearly.
• Experience delivering software in an agile development environment.

Requirements

• Design, implement, test, and maintain backend services and data-processing pipelines using C# and .NET.
• Build and optimize systems for ingesting, indexing, storing, querying, and serving large datasets using Elasticsearch and SQL Server.
• Identify bottlenecks and improve service performance, query efficiency, reliability, and scalability.
• Own services throughout their lifecycle, from technical design and implementation through deployment and ongoing operation.
• Participate in an on-call rotation supporting systems that operate 24/7.
• Contribute to architectural discussions, lead design and code reviews, and mentor other engineers.
• Evaluate and recommend improvements to technology, tooling, and engineering workflows.
• Use coding agents and AI-assisted tools for implementation, testing, and refactoring while maintaining accountability for code quality, security, and correctness.
• Develop and maintain software in accordance with FedRAMP security and compliance requirements.

Benefits

• Health Benefits: Babel Street covers 85-100% monthly premium costs for Medical, Dental, Vision, Life & Disability insurances – for you and your family!
• Retirement Plans: Babel Street offers both a Traditional and Roth 401(K) with a very competitive match.
• Unlimited Flexible Leave: We trust our employees to manage their own time and balance their personal and work lives.
• Holidays: Babel Street provides employees with 12 paid Federal Holidays.
• Tuition Reimbursement: We are committed to investing in our employees with our Tuition Reimbursement Program for continuing education.

Company Description

Babel Street is the trusted technology partner for the world’s most advanced identity intelligence and risk operations. We deliver advanced AI and data analytics solutions providing unmatched, analysis-ready data regardless of language, proactive risk identification, 360-degree insights, high-speed automation, and seamless integration into existing systems.

Babel Street empowers government and commercial organizations to transform high-stakes identity and risk operations into a strategic advantage. The actionable insights we deliver safeguard lives and protect critical assets around the world.

Babel Street is headquartered in Reston, Virginia, with regional offices in Boston, MA and Cleveland, OH, and international offices in Australia, Canada, Israel, Japan, and the U.K. For more information, visit www.babelstreet.com .