Senior Software Engineer
About The Position
Babel Street is seeking a Senior Backend Software Engineer to build and evolve the data systems that power its enterprise applications. This hands-on role involves designing, building, and operating backend services that ingest, process, index, store, and serve large volumes of data. The engineer will collaborate with other engineers on feature enhancements and architectural decisions, delivering reliable, scalable solutions from design through production. The position also involves using AI-assisted and agentic development tools to improve engineering productivity and strengthen practices for incorporating these tools into everyday development. The role is ideally based near Babel Street’s Somerville, Massachusetts office, but remote candidates will be considered; Eastern or Central time zones are preferred. The engineer will help transform fast-moving data streams into intelligence for customers’ critical decisions, while shaping how Babel Street applies agentic development across the software lifecycle. This includes helping make coding agents effective, secure, and reliable. The role supports systems operating 24/7 and includes participation in an on-call rotation.
Requirements
- 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.
Nice To Haves
- Hands-on experience implementing and maintaining FedRAMP security controls for production software and cloud infrastructure.
- Hands-on experience deploying, operating, and scaling backend services on Google Cloud Platform (GCP).
- Experience using AI coding assistants or agentic development tools for implementation, testing, and refactoring.
- Experience with distributed systems and high-volume data-processing pipelines.
- Experience mentoring engineers and leading technical improvements.
Responsibilities
- 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; use metrics, logs, and alerts to investigate incidents, resolve issues, and implement improvements that reduce recurrence.
- 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
- Babel Street covers 85–100% of monthly premium costs for medical, dental, vision, life, and disability insurance for employees and their families.
- Traditional and Roth 401(k) retirement plans with a competitive match.
- Unlimited flexible leave.
- 12 paid Federal Holidays.
- Tuition reimbursement for continuing education.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
