Sr. Software Engineer - Cloud Security

Comcast; Philadelphia (Philadelphia County); On-site; USD 140,000 - 190,000; Full time

Job summary

Comcast is seeking a Senior Software Engineer on the Cloud Security Engineering team to design, build, and operate reliable software platforms. You will own major technical areas end-to-end, architect scalable solutions, and lead implementation across services, data flows, and automation.

This role emphasizes production systems ownership, modern Python development, and collaboration across teams in a cybersecurity space, with opportunities to apply AI where it adds value.

Qualifications

• 7–10 years of professional software engineering experience.
• Strong Python 3.10+ and clean software design.
• Experience building backend APIs with FastAPI or similar frameworks.
• Strong database experience with PostgreSQL and ORM patterns.
• Experience building data ingestion and processing systems.
• Experience designing reliable multi-step workflows with retries and observability.
• Knowledge of concurrency, async processing, and distributed execution.

Responsibilities

• Develop self-service capabilities and repeatable processes.
• Lead end-to-end design of large-scale distributed systems.
• Translate ambiguous business requirements into scalable, secure architectures.
• Define service boundaries, APIs, data models, and deployment strategies.
• Evaluate tradeoffs across performance, scalability, security, cost, and maintainability.
• Incorporate observability, fault tolerance, and operational readiness into designs.
• Produce architecture diagrams and technical design documents for teams.
• Provide technical leadership throughout implementation, testing, deployment, and production support.
• Write production-quality code delivering secure, maintainable services.
• Lead technical problem solving across the development lifecycle.
• Mentor teammates and raise engineering standards.
• Research and prototype AI approaches and agent frameworks.
• Document decisions with runbooks and proposals for diverse audiences.

Skills

Infrastructure as Code

Cloud DevOps

AWS

System Design

Technical Leadership

Agentic AI

Python Software Development

Education

Bachelor's Degree

Tools

Docker

CI/CD Pipelines

PostgreSQL

Job description

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. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.)

Job Summary

As a Senior Software Engineer on the Cloud Security Engineering team, you will design, build, and operate reliable software platforms that transform complex business and technical findings into clear actions teams can take. This is a senior software engineering role in the cybersecurity space, with opportunities to apply AI where it provides practical value. You will build systems that ingest information from multiple internal and external tools, apply business logic, and turn that information into workflows, recommendations, automation, and measurable outcomes. You will also help us develop agentic pipelines that coordinate tools, data, and multi-step processes. Prior AI experience is not required. We are looking for a strong engineer who can learn quickly, evaluate new technologies, and apply them thoughtfully. This is a senior, high-impact engineering role where you will own major technical areas end-to-end. You will design systems of significant complexity, write production-quality code, make sound architectural trade-offs, and lead implementation across services, data flows, workflow automation, and agentic pipelines. You will be expected to reason from first principles, break down ambiguous problems, learn unfamiliar tools quickly, and deliver durable software that can be operated in production.

Job Description

Core Responsibilities

• Develop self-service capabilities. Build tools and platforms that allow teams to take action, follow guidance, and implement repeatable processes with minimal manual coordination.
• Lead the end-to-end design of complex, large-scale distributed systems.
• Translate ambiguous business requirements into scalable, secure, and reliable architectures.
• Define service boundaries, APIs, data models, integration patterns, and deployment strategies.
• Evaluate architectural tradeoffs across performance, scalability, resiliency, security, cost, and maintainability.
• Identify failure modes and incorporate observability, fault tolerance, and operational readiness into system designs.
• Produce clear architecture diagrams and technical design documents that align engineering teams and stakeholders.
• Provide technical leadership throughout implementation, testing, deployment, and production support.
• Write production-quality code. Deliver secure, tested, observable, maintainable services that meet high engineering standards.
• Lead technical problem solving. Break down ambiguous, multi-step problem spaces into implementable components and guide execution across the development lifecycle.
• Review design and code rigorously. Raise quality through strong technical review, architectural guidance, and attention to correctness, maintainability, usability, and operational resilience.
• Mentor and influence. Help raise the engineering bar by coaching teammates, improving patterns, documenting decisions, and modeling strong engineering judgment.
• Research and prototype. Evaluate new approaches in applied AI, workflow automation, data processing, and cloud-native engineering. Validate ideas quickly before broader rollout.
• Document and communicate clearly. Create technical documentation, design proposals, operational runbooks, implementation guides, and decision records for diverse audiences.

What You’ll Need:

• 6+ years of professional software engineering experience, including ownership of production systems
• Strong proficiency in Python 3.10+ and clean, maintainable software design
• Experience building backend APIs and services using FastAPI or similar modern frameworks
• Strong database experience, including PostgreSQL, ORM patterns, schema design, and data lifecycle management
• Experience building data ingestion and processing systems across multiple sources
• Experience designing reliable multi-step workflows with retries, state tracking, observability, and failure handling
• Working knowledge of concurrency, async processing, and distributed execution patterns
• Ability to design layered, service-oriented systems with clear contracts and maintainable abstractions
• Ability to translate high-level requirements into practical designs, implementation plans, and deliverable work
• Curiosity and a demonstrated willingness to learn unfamiliar technologies, experiment with new tools, and apply them pragmatically

Cloud, CI/CD & Infrastructure

• Strong experience with Public Cloud services such as AWS EC2, ECS/Fargate, Lambda, RDS, S3, IAM, CloudWatch, and event-driven patterns.
• Experience with Docker and production container delivery.
• Experience building and maintaining CI/CD pipelines.
• Experience with automated testing, quality gates, dependency checks, deployment controls, and operational safeguards

Nice to Have

• Familiarity with cybersecurity as a business or technical domain
• Familiarity with security findings, alerts, vulnerabilities, policy issues, or control-related workflows
• Understanding of investigation, remediation, exception handling, or operational control workflows
• Experience with React/TypeScript for building user-facing internal tools
• Experience with Snowflake, Databricks, or similar analytical data platforms
• Familiarity with OpenSearch/Elasticsearch for search, analysis, or investigation workflows
• Exposure to AI-assisted development, LLM-based applications, or agent frameworks is helpful but not required

Disclaimer

This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications.

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.

Skills:

Infrastructure As Code (IaC); Cloud DevOps; Amazon Web Services (AWS); System Designs; Technical Leadership; Agentic AI; Python Software Development

Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That’s why we provide an array of options, expert guidance and always-on tools, that are personalized to meet the needs of your reality - to help support you physically, financially and emotionally through the big milestones and in your everyday life. Please visit the compensation and benefits summary on our careers site for more details.

Education

Bachelor's Degree

While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Relevant Work Experience

7-10 Years