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# Lead Software Engineer

- **Company:** Xfinity
- **Location:** Reston, VA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $175,427.0 - $195,000.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Amazon S3, C++ (Programming Language), Profiling, Databases, Relational Databases, Linux, DevOps, Distributed Systems, Amazon DynamoDB, MySQL, Neo4j, NoSQL, Performance Tuning, Prometheus, Software Engineering, Web Applications, Aerospike, Grafana, Caching, Perf (Linux), Kubernetes, Information Technology, Low Latency, Adserver, Terraform, Docker
- **Published:** September 13, 2026
- **Apply:** https://www.careerjet.com/job/us472100e3fcc81f549a044d74350ff98e/eaa

## About the Role

REQUIREMENTS: Bachelor's degree, or foreign equivalent, in Computer Science, Engineering, or related technical field, and seven (7) years of experience developing software for ad tech systems, including ad-serving data indexing engines, ad selection algorithms, and audience targeting pipelines; caching and optimizing relational databases including MySQL and Aurora, and NoSQL databases including Aerospike, DynamoDB, ETCD, Neo4J, and RocksDB; using sanitizer, perf, and gprof profiling tools for performance tuning; architecting and developing scalable, low-latency C++ applications on Linux; performing end to end system design and optimization; of which five (5) years include using cloud-native tools including Kubernetes, Docker, and Terraform, and AWS services including ELB, EKS, S3, DynamoDB, and Kinesis; and monitoring and troubleshooting systems using Prometheus, Grafana, ELK, and Loki stack.
SALARY: $175,427 to $195,000 per year, Grafana; Docker (Software); Aerospike Database

## Description

DUTIES: Provide technical leadership in designing and developing new software and web applications; work on ad tech systems, covering ad-serving data indexing engines, ad selection algorithms, and audience targeting pipelines; optimize relational (MySQL, Aurora) and NoSQL (Aerospike, DynamoDB, ETCD, Neo4J, RocksDB) databases through thoughtful schema design, efficient query crafting, and cache fine-tuning; leverage profiling tools (sanitizer, perf and gprof), along with custom benchmarks and tracing, to diagnose and optimize CPU, memory, and I/O performance issues; architect and develop scalable, low-latency C++ applications on Linux, designed to handle high-throughput, high-QPS workloads; architect, implement, and optimize core services across distributed infrastructure, driving improvements in throughput, reliability, and overall system efficiency; use cloud-native tools such as Kubernetes, Docker, and Terraform, alongside key AWS services including ELB, EKS, S3, DynamoDB, and Kinesis;
and work with SRE/DevOps teams to instrument systems (Prometheus, Grafana, ELK, Loki stack); support applications under development and customize current applications; assist with the software update process for existing applications, and roll-outs of software releases; analyze, test, and assist with the integration of new applications; document all development activity; research, write, and edit documentation and technical requirements, including software designs, evaluation plans, test results, technical manuals, and formal recommendations and reports; monitor and evaluate competitive applications and products; review literature, patents, and current practices relevant to the solution of assigned projects; collaborate with project stakeholders to identify product and technical requirements; conduct analysis to determine integration needs; work with the Quality Assurance team to determine if applications fit specification and technical requirements; and guide and mentor junior-level
engineers. Position is eligible to work remotely one or more days per week, per company policy.


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