Comcast
Sr. Backend Engineer C++ - Reston 2 Days Hybrid - FreeWheel
$142K–$213K
VA - Reston, 11951 Freedom Dr Ste 900 · Senior · Full-time · Posted Oct 28, 2026
- Experience
- The posting lists 3 years or above relevant work experience under Required Skills and Experience, and 7–10 years under Relevant Work Experience.
- Education
- Bachelor's Degree or above; the posting also says applicants may be considered with coursework and experience or extensive related professional experience.
About the job
Designs, builds, and supports high-performance backend services for FreeWheel’s video advertising platform.
What you'll do
- Design and develop software applications and backend services, and optimize performance and reliability.
- Collaborate with stakeholders, cross-functional teams, and Quality Assurance to deliver and release software.
- Mentor engineers and document development activities.
What they ask for
- Strong proficiency in modern C++, including multithreading, concurrency, asynchronous programming, and memory management.
- Experience developing high-performance, low-latency, highly concurrent backend services.
- Experience with Linux performance profiling, benchmarking, debugging, and system-level optimization.
- Understanding of RPC frameworks, HTTP/gRPC protocols, and distributed service architectures.
Nice to have
- Familiarity with online machine learning inference or model serving frameworks such as NVIDIA Triton or ONNX Runtime.
- Experience with inference scheduling, batching, and CPU/GPU resource optimization.
Pay
USD 141,850.78 - USD 212,776.16 base salary
Tools
C++, Linux, RPC, HTTP, gRPC, NVIDIA Triton, ONNX Runtime, CPU/GPU
AI focus
May involve online machine learning inference or model serving, including inference scheduling, batching, and CPU/GPU resource optimization; these are listed as pluses.
Model-written summary · the original posting is authoritative