Machine Learning Engineer (GoLang)

Blueface Ltd; Washington (District of Columbia); On-site; USD 142,651 - 213,977; Full time

Benefits offered by this job

Best-in-class benefits

Job summary

Blueface Ltd is looking for a mid-level Backend Engineer to join their Machine Learning Platform team in Washington, DC. This role emphasizes building scalable backend systems that facilitate ML workloads across video, image, and document processing.

The ideal candidate will have solid experience in Golang, Kubernetes, and AWS, and will work on creating APIs and backend services that support innovative ML applications.

Qualifications

• 3–6 years of professional software engineering experience.
• Strong backend engineering experience with Golang.
• Experience building and operating APIs in production.
• Hands-on experience with Kubernetes in production.
• Experience using Terraform for infrastructure provisioning.
• Solid working knowledge of AWS cloud services.
• Experience building or supporting ML processing pipelines.

Responsibilities

• Design, build, and maintain high‑performance backend services in Golang.
• Develop REST and gRPC APIs for inference and processing pipelines.
• Implement asynchronous and distributed processing patterns.
• Integrate ML inference services into backend workflows.
• Deploy and operate backend services on Kubernetes.

Skills

Golang

API Development

Kubernetes

Terraform

AWS

ML Processing

LLMs

Milvus

Education

Bachelor's Degree

Job description

Company Overview

Make your mark at Comcast – a Fortune 30 global media and technology company. From the connectivity and platforms we provide to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Join our award‑winning technology team that turns big ideas into cutting‑edge products, platforms, and solutions that our customers love.

Job Summary

Multimodal Analysis Framework (MAF) is an end‑to‑end platform designed to process diverse content sources—including video, images, audio, and documents—to generate rich, structured metadata. The platform unifies multiple ML/AI models to extract curated insights at scale, tailored to specific business needs. MAF supports both on‑demand workloads (batch uploads, ad‑hoc analysis) and real‑time streaming workflows, enabling continuous metadata generation for live content streams.

Customers can define their metadata requirements—such as entity extraction, scene segmentation, object detection, transcription, summarization, or multimodal correlation—and the framework orchestrates the appropriate models and toolchains to deliver high‑quality outputs. Through flexible APIs and UI‑based workflows, customers and internal teams can visualize metadata, trigger enrichment, monitor processing, and integrate results into downstream applications. The platform emphasizes modularity, scalability, and extensibility to support new ML models, LLM‑based agents, and cross‑modal inference as use cases evolve.

Role Overview

We are looking for a mid‑level Backend Engineer to join our Machine Learning Platform team. This role focuses on building scalable backend systems that power ML workloads, including video, image, and document processing, and enable LLM‑driven applications through agents and MCP servers. You will work primarily in Golang, deploy and operate services on Kubernetes, manage infrastructure with Terraform, and build on AWS. A core part of the role is designing platform capabilities that allow LLMs to safely and reliably interact with tools, data, and services via agent frameworks and MCP servers.

Primary Responsibilities

• Design, build, and maintain high‑performance backend services in Golang for ML and AI platform use cases.
• Develop REST and gRPC APIs for inference, processing pipelines, orchestration, and platform services.
• Implement asynchronous and distributed processing patterns (workers, queues, event‑driven systems).
• Ensure backend services meet production standards for scalability, reliability, and security.
• Build and operate backend systems supporting video processing (frame extraction, metadata generation, embeddings, indexing).
• Build and operate backend systems supporting image processing (OCR, classification, detection, embedding generation).
• Build and operate backend systems supporting document processing (parsing, layout analysis, chunking, OCR, retrieval pipelines).
• Integrate ML inference services into backend workflows with attention to latency, throughput, and cost.
• Work closely with ML engineers and data scientists to productionize models and pipelines.
• Build LLM‑enabled backend services using structured prompting, tool/function calling, and retrieval‑augmented generation (RAG).
• Design and implement agentic workflows (multi‑step reasoning, tool orchestration, retries, guardrails).
• Develop and operate MCP servers that expose internal platform capabilities (search, retrieval, processing, data access) to LLM‑based applications.
• Enforce security, access control, and observability for agent and MCP interactions.
• Design and maintain vector‑based retrieval systems using Milvus.
• Implement embedding ingestion, indexing, and query pipelines at scale.
• Optimize retrieval quality, latency, and relevance for downstream LLM applications.
• Deploy and operate backend and ML services on Kubernetes (scaling, rollouts, resource management).
• Use Terraform for infrastructure provisioning and continuous delivery of cloud resources.
• Build and operate primarily on AWS, leveraging services such as compute, networking, IAM, object storage, managed Kubernetes, and logging/monitoring services.
• Implement observability using logs, metrics, and traces; define SLOs and alerts.
• Write automated tests (unit, integration) and contribute to CI/CD pipelines.
• Participate in on‑call rotations and incident response; drive post‑incident improvements.

Qualifications

• 3–6 years of professional software engineering experience.
• Strong backend engineering experience with Golang.
• Experience building and operating APIs (REST and/or gRPC) in production.
• Hands‑on experience with Kubernetes in production environments.
• Experience using Terraform for infrastructure provisioning and deployment.
• Solid working knowledge of AWS cloud services and core architectural concepts.
• Experience building or supporting ML processing pipelines (video, image, or document).
• Practical experience using LLMs in production systems.
• Experience developing agents and/or MCP servers, or equivalent tool‑integration platforms.
• Experience with Milvus or other vector databases in production. (Preferred)
• Familiarity with GPU‑backed workloads and ML inference optimization.
• Experience with messaging/streaming systems (Kafka, SQS, SNS, etc.).
• Knowledge of secure system design for AI platforms (IAM, secrets management, least‑privilege access).
• Experience working on internal developer platforms or ML infrastructure teams.

Education

Bachelor's Degree (preferred). Comcast may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Compensation

Primary Location Pay Range: $142,651.46 - $213,977.19. The application window is 30 days from the date the job is posted, unless the number of applicants requires it to close sooner or later.

Benefits

We provide best‑in‑class benefits to eligible employees. Our benefits are tailored to support you physically, financially, and emotionally through major milestones and everyday life. To learn more about our benefits, please visit the compensation and benefits summary on our careers site.

Application Statement

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.