Senior Python Engineer Jobs in USA with Visa Sponsorship
Senior Python Engineers are among the most consistently sponsored roles in the U.S. tech industry. Employers routinely file H-1B visa, O-1, and L-1 petitions for this title, and the role qualifies as a specialty occupation given its degree requirements in computer science or a related field. For detailed occupation requirements, see the O*NET profile.
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Get Access To All JobsINTRODUCTION
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
We are looking for a Senior Software Engineer to lead the technical direction of our AI Agent initiatives. This is a backend engineering role first, focused on building scalable, reliable systems that happen to use modern AI techniques. You will architect and operate production-grade backend services and agentic workflows that solve complex, non-deterministic problems. While LLMs are a core capability, success in this role comes from strong systems thinking, designing for correctness, observability, failure recovery, and long-term maintainability. You will serve as a technical anchor for the team—mentoring junior engineers, setting engineering standards, and working with leadership to turn AI concepts into dependable, customer-facing systems. Level machine learning expertise and innovation capacity are essential.
JOB DESCRIPTION
What You Will Do
Architectural Leadership
- Design and own scalable backend architectures and complex agent-driven workflows. This includes service boundaries, data flows, failure handling, observability, and performance characteristics—not just model interaction.
Agent Behavior Engineering (Not Just Prompting)
- Design and productionize agent behaviors including tool invocation, state management, memory strategies, and reasoning control. Prompts are treated as code: versioned, tested, reviewed, and evolved alongside backend logic for reliability, cost, and latency.
Systemic Quality & Code Health
- Set the bar for clean, readable, maintainable code across the Python backend. Establish patterns and standards that allow AI-heavy systems to remain understandable and operable over time.
Testing & Evaluation of Probabilistic Systems
- Design testing strategies for non-deterministic AI components, including behavioral regression testing, automated evaluations, and guardrails that reduce blast radius in production.
Technical Mentorship
- Lead code reviews as a teaching tool, run architectural discussions, and actively mentor Engineer 1–2 developers in backend fundamentals, system design, and operational thinking.
Operational Excellence & Production Ownership
- Own CI/CD, deployment, and runtime health. Lead production support efforts and help build a strong on-call culture where systems are observable, diagnosable, and resilient under real-world load.
Customer-Facing Engineering
- Partner with product and design to deliver high-traffic, customer-facing experiences where AI responses must meet clear standards for latency, reliability, and UX—not just correctness.
Cross-Functional Technical Leadership
- Translate product goals into pragmatic technical roadmaps, identifying scaling risks, technical debt, and AI-specific failure modes early.
Advanced Debugging & Incident Leadership
- Lead investigations into complex issues spanning multiple services, data pipelines, or emergent agent behaviors in production.
WHAT WE’RE LOOKING FOR
Senior Backend Engineering Depth
- Extensive experience designing, building, and operating backend systems in Python, including asynchronous frameworks (FastAPI, asyncio) and distributed service architectures.
Production Experience at Scale
- A track record of owning customer-facing systems in production. You understand uptime, latency budgets, incident response, and the cost of unreliable behavior.
AI Systems Intuition
- Hands-on experience integrating LLMs into real systems, with a clear understanding of their limitations, failure modes, and operational risks. You think in terms of workflows, control flow, and safeguards—not just prompt quality.
Agent & Tooling Experience
- Experience building AI agents that interact with tools, APIs, and external systems, including managing agent state, bounding autonomy, and preventing pathological behaviors (loops, hallucinations, cascading failures).
Support & Reliability Mindset
- Comfortable being responsible for systems after launch. You design software that is “easy to wake up to” when something goes wrong.
Strong System Design Skills
- Experience with microservices, data stores, queues, and high-throughput APIs—and the judgment to keep designs as simple as possible.
Mentorship & Engineering Culture
- A desire to raise the bar for those around you through feedback, example, and thoughtful technical leadership.
Pragmatism
- You enjoy leveraging advanced AI capabilities, but you prioritize stability, debuggability, and long-term maintainability over novelty.
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:
- Adaptability
- Critical Thinking
- Curious Mindset
- Customer-Oriented
- Python (Programming Language)
Salary:
Primary Location Pay Range: $168,328.72 - $252,493.08
Comcast intends to offer the selected candidate base pay within this range, dependent on job-related, non-discriminatory factors such as experience. The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.
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
INTRODUCTION
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
We are looking for a Senior Software Engineer to lead the technical direction of our AI Agent initiatives. This is a backend engineering role first, focused on building scalable, reliable systems that happen to use modern AI techniques. You will architect and operate production-grade backend services and agentic workflows that solve complex, non-deterministic problems. While LLMs are a core capability, success in this role comes from strong systems thinking, designing for correctness, observability, failure recovery, and long-term maintainability. You will serve as a technical anchor for the team—mentoring junior engineers, setting engineering standards, and working with leadership to turn AI concepts into dependable, customer-facing systems. Level machine learning expertise and innovation capacity are essential.
JOB DESCRIPTION
What You Will Do
Architectural Leadership
- Design and own scalable backend architectures and complex agent-driven workflows. This includes service boundaries, data flows, failure handling, observability, and performance characteristics—not just model interaction.
Agent Behavior Engineering (Not Just Prompting)
- Design and productionize agent behaviors including tool invocation, state management, memory strategies, and reasoning control. Prompts are treated as code: versioned, tested, reviewed, and evolved alongside backend logic for reliability, cost, and latency.
Systemic Quality & Code Health
- Set the bar for clean, readable, maintainable code across the Python backend. Establish patterns and standards that allow AI-heavy systems to remain understandable and operable over time.
Testing & Evaluation of Probabilistic Systems
- Design testing strategies for non-deterministic AI components, including behavioral regression testing, automated evaluations, and guardrails that reduce blast radius in production.
Technical Mentorship
- Lead code reviews as a teaching tool, run architectural discussions, and actively mentor Engineer 1–2 developers in backend fundamentals, system design, and operational thinking.
Operational Excellence & Production Ownership
- Own CI/CD, deployment, and runtime health. Lead production support efforts and help build a strong on-call culture where systems are observable, diagnosable, and resilient under real-world load.
Customer-Facing Engineering
- Partner with product and design to deliver high-traffic, customer-facing experiences where AI responses must meet clear standards for latency, reliability, and UX—not just correctness.
Cross-Functional Technical Leadership
- Translate product goals into pragmatic technical roadmaps, identifying scaling risks, technical debt, and AI-specific failure modes early.
Advanced Debugging & Incident Leadership
- Lead investigations into complex issues spanning multiple services, data pipelines, or emergent agent behaviors in production.
WHAT WE’RE LOOKING FOR
Senior Backend Engineering Depth
- Extensive experience designing, building, and operating backend systems in Python, including asynchronous frameworks (FastAPI, asyncio) and distributed service architectures.
Production Experience at Scale
- A track record of owning customer-facing systems in production. You understand uptime, latency budgets, incident response, and the cost of unreliable behavior.
AI Systems Intuition
- Hands-on experience integrating LLMs into real systems, with a clear understanding of their limitations, failure modes, and operational risks. You think in terms of workflows, control flow, and safeguards—not just prompt quality.
Agent & Tooling Experience
- Experience building AI agents that interact with tools, APIs, and external systems, including managing agent state, bounding autonomy, and preventing pathological behaviors (loops, hallucinations, cascading failures).
Support & Reliability Mindset
- Comfortable being responsible for systems after launch. You design software that is “easy to wake up to” when something goes wrong.
Strong System Design Skills
- Experience with microservices, data stores, queues, and high-throughput APIs—and the judgment to keep designs as simple as possible.
Mentorship & Engineering Culture
- A desire to raise the bar for those around you through feedback, example, and thoughtful technical leadership.
Pragmatism
- You enjoy leveraging advanced AI capabilities, but you prioritize stability, debuggability, and long-term maintainability over novelty.
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:
- Adaptability
- Critical Thinking
- Curious Mindset
- Customer-Oriented
- Python (Programming Language)
Salary:
Primary Location Pay Range: $168,328.72 - $252,493.08
Comcast intends to offer the selected candidate base pay within this range, dependent on job-related, non-discriminatory factors such as experience. The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.
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
See all 46+ Senior Python Engineer jobs
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Get Access To All JobsTips for Finding Visa Sponsorship as a Senior Python Engineer
Target companies with H-1B filing history
Not every employer sponsors visas, even for in-demand engineering roles. Focus your search on companies with a documented history of H-1B filings for software engineering positions. Migrate Mate filters for sponsors so you skip the guesswork.
Confirm your degree field matches the role
H-1B approval for Senior Python Engineers typically requires a bachelor's degree or higher in computer science, software engineering, or a closely related field. A degree in an unrelated discipline can complicate specialty occupation classification, even with strong experience.
Senior titles strengthen your H-1B case
USCIS scrutinizes whether a role genuinely requires a specialized degree. Senior-level job titles with defined technical scope, architecture responsibilities, or team leadership duties make the specialty occupation argument significantly cleaner than junior or generalist engineering titles.
O-1A is a real alternative if you have a strong track record
If you've led notable open-source projects, published technical work, or received industry recognition, the O-1A visa may be within reach. It has no lottery, no annual cap, and can be employer-sponsored or self-petitioned through an agent.
Negotiate premium processing into your offer
Standard H-1B processing can take three to six months. Premium processing guarantees an adjudication decision within 15 business days for an additional USCIS fee. Ask whether the employer covers premium processing before accepting an offer that requires status change.
L-1B is an option if you're transferring within a multinational
Senior Python Engineers at multinationals with a U.S. presence may qualify for an L-1B intracompany transfer based on specialized knowledge. This bypasses the H-1B lottery entirely and is particularly useful if you've worked for the company abroad for at least one year.
Senior Python Engineer jobs are hiring across the US. Find yours.
Find Senior Python Engineer JobsFrequently Asked Questions
Does a Senior Python Engineer role qualify as an H-1B specialty occupation?
Yes, in the vast majority of cases. USCIS considers software engineering roles specialty occupations when the position normally requires at least a bachelor's degree in computer science, software engineering, or a directly related field. Senior-level roles with defined technical scope are generally stronger candidates than generalist or entry-level titles, since the complexity of duties makes the degree requirement easier to substantiate in the petition.
What visa types do employers typically sponsor for Senior Python Engineers?
H-1B is the most common path, but far from the only one. L-1B covers intracompany transfers for engineers with specialized knowledge. O-1A applies to those with a strong track record of recognition or contribution in their field. Some employers also sponsor TN visas for Canadian and Mexican nationals, and E-3 visas for Australian citizens. The right visa depends on your nationality, current status, and the employer's willingness to sponsor.
How can I find Senior Python Engineer jobs that offer visa sponsorship on Migrate Mate?
Migrate Mate is built specifically for this. Every job on the platform is filtered for visa sponsorship, so you're not wasting time applying to roles that won't support your immigration status. Browse Senior Python Engineer listings on Migrate Mate to find employers who have an active history of sponsoring work visas for engineering roles.
What if my degree isn't in computer science, can I still get H-1B sponsorship as a Python engineer?
Possibly, but it adds complexity. USCIS allows degrees in related fields like mathematics, information systems, or electrical engineering to support a software engineering petition. If your degree is in an unrelated field, your employer's attorney will need to build a stronger case using a combination of your education and progressive work experience. A credential evaluation and detailed job duty analysis both help.
What are H-1B approval rates for software engineering roles, and how does seniority affect outcomes?
USCIS has historically approved software engineering H-1B petitions at high rates compared to more contested categories. Seniority genuinely helps: roles with senior, lead, or principal titles carry more defined technical responsibilities, which makes it easier to satisfy the specialty occupation standard. Roles that look generalist or interchangeable regardless of title face higher rates of Requests for Evidence. Employers with established immigration programs and experienced counsel tend to see stronger outcomes.
What is the prevailing wage requirement for sponsored Senior Python Engineer jobs?
U.S. employers sponsoring a visa must pay at least the prevailing wage, which is what workers in the same role, area, and experience level typically earn. The Department of Labor sets this rate to make sure companies aren't hiring foreign workers simply because they'd accept lower pay than a U.S. worker. It varies by job title, location, and experience. You can look up current prevailing wage rates for any occupation and location using the OFLC Wage Search page.
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