Explore 5 backend python software engineer jobs from 3 hiring companies in Deer Park, CA, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Backend Python Software Engineer

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Backend Python Software Engineer Jobs

Keysight Technologies

Liberate

Astera Institute

Hybrid

Onsite

<h1>About Astera:</h1>Astera is a private foundation on a mission to steer science and technology toward an abundant future. We believe the coming years will bring an era of unprecedented scientific and technological advancement as exponential progress in AI converges with central advances in other fields to dramatically accelerate innovation. This inflection point provides an unparalleled opportunity to fundamentally rethink the institutions, systems, and tools that drive scientific progress.Unlike traditional non-profit research organizations, projects supported by Astera operate like high-velocity startups, allowing us to focus on ambitious goals, match structure to problem, and attract strong technical talent and leadership. You can read more about our mission, vision, and programming <a target="_blank" rel="noopener noreferrer nofollow" href="https://astera.org/vision/">here</a>.<h1>Position Summary:</h1>The Astera Institute is seeking a full-time software engineer to help build and scale The Stacks (<a target="_blank" rel="noopener noreferrer nofollow" href="https://thestacks.org">https://thestacks.org</a>), a new content platform designed to meaningfully improve how scientific, technical, and intellectual work is shared, discovered, and built upon. The ideal candidate is a highly capable, hands-on generalist who has built and maintained complex content platforms or large-scale web applications, and who is comfortable redesigning core systems as the product’s identity evolves. Beyond technical skill, you should have strong architectural judgment, a user-centered mindset, and enthusiasm for building tools that accelerate knowledge-sharing.This is a unique opportunity to shape a core piece of public digital infrastructure at the earliest stages. Successful candidates will be comfortable working in fast-moving environments, collaborating across multiple teams, and making thoughtful architectural decisions that support long-term growth. Open-source experience and enthusiasm are a major plus.<h1>Key Responsibilities:</h1><ul style="min-height:1.5em"><li>Contribute to the architecture, development, and maintenance of The Stacks—including backend services, frontend interfaces, data models, and integrations.</li><li>Design flexible internal structures that can adapt as The Stacks platform develops.</li><li>Implement high-quality user-facing interfaces and experiences using modern web technologies.</li><li>Build reliable APIs and services and integrate content-management fundamentals such as search indexing, metadata enrichment, static/dynamic content generation, and back-office tools for moderation and curation.</li><li>Ensure data integrity, performance, scalability, and maintainability for both content and user data.</li><li>Work closely with product and design teams to develop user-centric features and iterate rapidly based on feedback.</li><li>Manage and deploy cloud infrastructure, ensuring high availability, observability, and smooth development workflows.</li><li>Maintain high-quality engineering practices including version control, testing, documentation, and CI/CD workflows.</li><li>Provide ongoing support and improvements post-launch, including bug fixes, feature development, and performance optimization.</li><li>Contribute to open-source components of The Stacks when appropriate.</li><li>Collaborate with related internal teams across Astera’s connected programs and external partners as needed.</li></ul><h1>Qualifications and Experience:</h1><ul style="min-height:1.5em"><li>BA/BS in Computer Science, Computer Engineering, or equivalent experience.</li><li>7+ years experience building and maintaining production-grade, user-facing software systems.</li><li>Demonstrated experience with content-heavy or knowledge-based platforms, such as:<ul style="min-height:1.5em"><li>publishing systems</li><li>large documentation or archival sites</li><li>hybrid static/dynamic content architectures</li><li>search indexing and metadata pipelines</li><li>user-generated content, content moderation</li><li>back-office workflows</li></ul></li></ul><ul style="min-height:1.5em"><li>Strong engineering fundamentals and experience owning complex systems over time, including refactoring or re-architecting major components as products evolve.</li></ul><ul style="min-height:1.5em"><li>Proficiency with modern backend and frontend technologies (e.g., Python, TypeScript, SQL databases, Flask/FastAPI, React, etc.)—specific technologies matter less than your ability to learn and adapt.</li><li>Experience deploying and managing cloud infrastructure (AWS or equivalent).</li><li>Ability to move quickly in environments with evolving requirements, ambiguity, and rapid iteration cycles.</li><li>Highly adaptable and comfortable working across disciplines.</li></ul><h1>Location:</h1>On site at our office in Emeryville, CA. Some travel may be required from time-to-time for in-person collaboration and work.<h1>Compensation:</h1>The posted salary range is based on location in the Bay Area. The successful candidate will receive a competitive compensation package, commensurate with their experience and location.

Senior Software Engineer, The Stacks - Radial Science

Senior Software Engineer

7+ years in production-grade software; experience with content-heavy or knowledge-based platforms; BA/BS in CS/CE or equivalent; strong backend/frontend skills; cloud experience; open-source experience is a plus.

Overview:
<a href="https://www.keysight.com/us/en/about.html" target="_blank" style="color: #e90029;" rel="noopener">Keysight</a> is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more <a href="https://www.youtube.com/watch?v=ykxkSz5DlPo&t=16s" target="_blank" style="color: #e90029;" rel="noopener">about what we do.</a> Our <a href="https://jobs.keysight.com/awards" target="_blank" rel="noopener">award-winning</a> culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers. We are seeking a Senior Full-Stack Software Engineer – AI Applications to design and build end-to-end AI-enabled applications, from user experience to backend services. This role focuses on application architecture, usability, security, and workflow orchestration, enabling users to leverage AI capabilities that integrate with Keysight hardware, software, and services. This is a product-focused software engineering role centered on building scalable, production-ready AI applications and components. 

Responsibilities:
<ul><li data-start="1273" data-end="1387">Design and implement end-to-end AI-based applications, including frontend user interfaces and backend services</li><li data-start="1388" data-end="1572">Build applications that integrate AI workflows with Keysight hardware, software, and services, including design software, calibration software, emulation tools, and cloud platforms</li><li data-start="1730" data-end="1845">Design, implement, and maintain backend APIs and services that orchestrate AI workflows and system integrations</li><li data-start="1846" data-end="1959">Collaborate closely with AI/ML engineers, product managers, and domain experts across multiple business units</li><li data-start="1960" data-end="2072">Translate complex technical capabilities into usable, scalable, and production-ready application experiences</li><li data-start="2073" data-end="2159">Ensure high standards for usability, reliability, performance, and maintainability</li><li data-start="2160" data-end="2283">Contribute to application-level architecture decisions and help define UX and workflow patterns for AI-enabled products</li></ul>

Qualifications:
<ul><li data-start="1178" data-end="1290">Design and implement end-to-end AI-based applications, including frontend user interfaces and backend services</li><li data-start="1291" data-end="1475">Build applications that integrate AI workflows with Keysight hardware, software, and services, including design and calibration software, emulation tools, and AI platforms</li><li data-start="1476" data-end="1632">Develop intuitive user experiences for AI workflows such as data management, model training and fine-tuning, inference, optimization, and explainability</li><li data-start="1633" data-end="1748">Design, implement, and maintain backend APIs and services that orchestrate AI workflows and system integrations</li><li data-start="1749" data-end="1869">Build and maintain CI/CD pipelines to support reliable development, testing, and deployment of AI-based applications</li><li data-start="1870" data-end="2068">Ensure applications follow secure software development practices (e.g., secure SDLC / SSDF), including authentication, authorization, and proper use of encryption for data in transit and at rest</li><li data-start="2069" data-end="2174">Collaborate closely with AI/ML, AI platform, domain, and product teams across multiple business units</li><li data-start="2175" data-end="2287">Translate complex technical capabilities into usable, scalable, and production-ready application experiences</li><li data-start="2288" data-end="2374">Ensure high standards for usability, reliability, performance, and maintainability</li><li data-start="2375" data-end="2486">Contribute to application-level architecture decisions and help define patterns for scalable AI experiences</li><li data-start="2531" data-end="2617">Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field</li><li data-start="2618" data-end="2694">5+ years of experience building production-grade full-stack applications</li><li data-start="2695" data-end="2816">Strong experience with modern frontend frameworks (React preferred) and designing user interfaces for technical users</li><li data-start="2817" data-end="2917">Backend development experience using Python and/or Node.js, including building scalable services</li><li data-start="2918" data-end="3004">Experience designing and consuming RESTful APIs and service-oriented architectures</li><li data-start="3005" data-end="3106">Experience building data-driven applications that ingest, process, and visualize complex data</li><li data-start="3107" data-end="3217">Experience with CI/CD practices to support build, test, and deployment of production software applications</li><li data-start="3218" data-end="3363">Experience applying secure software development practices (e.g., secure SDLC / SSDF), including authentication, authorization, and encryption</li><li data-start="3364" data-end="3487">Strong software engineering fundamentals, including data structures, debugging, testing, and performance considerations</li><li data-start="3488" data-end="3590">Experience working in production codebases and collaborating in cross-functional engineering teams</li><li data-start="3591" data-end="3693">Ability to translate complex technical workflows into intuitive and usable application experiences</li></ul> <a style="color: #ff0000;" href="https://about.keysight.com/en/jobs/careers_privacy_statement.pdf" target="_blank" rel="noopener">Careers Privacy Statement</a> Keysight Technologies Inc. is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other protected categories under all applicable laws. Pay is based on experience, education and skills, most offers will be between the minimum and the midpoint of the Salary Range listed below.Colorado pay range: MIN $119,850 - MAX $199,750California pay range: MIN $129,450 - MAX 215,740 Note: For other locations, pay ranges will vary by region This role is eligible for Keysight Results Bonus Program US Employees may be eligible for the following benefits:<ul><li style="margin: 0in 0in 0in 1in;">Medical, dental and vision</li><li style="margin: 0in 0in 0in 1in;">Health Savings Account</li><li style="margin: 0in 0in 0in 1in;">Health Care and Dependent Care Flexible Spending Accounts</li><li style="margin: 0in 0in 0in 1in;">Life, Accident, Disability insurance</li><li style="margin: 0in 0in 0in 1in;">Business Travel Accident and Business Travel Health</li><li style="margin: 0in 0in 0in 1in;">401(k) Plan</li><li style="margin: 0in 0in 0in 1in;">Flexible Time Off, Paid Holidays</li><li style="margin: 0in 0in 0in 1in;">Paid Family Leave</li><li style="margin: 0in 0in 0in 1in;">Discounts, Perks</li><li style="margin: 0in 0in 0in 1in;">Tuition Reimbursement</li><li style="margin: 0in 0in 0in 1in;">Adoption Assistance</li><li style="margin: 0in 0in 0in 1in;">ESPP (Employee Stock Purchase Plan)</li></ul>

Senior Full-Stack Software Engineer – AI Applications

Senior Full-Stack Software Engineer

Design and build end-to-end AI applications; develop frontend and backend; integrate AI workflows with hardware/software; ensure scalable, secure, production-ready systems.

Overview <a href="https://www.keysight.com/us/en/about.html" target="_blank" style="color: #e90029;" rel="noopener">Keysight</a> is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more <a href="https://www.youtube.com/watch?v=ykxkSz5DlPo&t=16s" target="_blank" style="color: #e90029;" rel="noopener">about what we do.</a> Our <a href="https://jobs.keysight.com/awards" target="_blank" rel="noopener">award-winning</a> culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers. We are seeking a Senior Full-Stack Software Engineer – AI Applications to design and build end-to-end AI-enabled applications, from user experience to backend services. This role focuses on application architecture, usability, security, and workflow orchestration, enabling users to leverage AI capabilities that integrate with Keysight hardware, software, and services. This is a product-focused software engineering role centered on building scalable, production-ready AI applications and components.  Responsibilities <ul><li data-start="1273" data-end="1387">Design and implement end-to-end AI-based applications, including frontend user interfaces and backend services</li><li data-start="1388" data-end="1572">Build applications that integrate AI workflows with Keysight hardware, software, and services, including design software, calibration software, emulation tools, and cloud platforms</li><li data-start="1730" data-end="1845">Design, implement, and maintain backend APIs and services that orchestrate AI workflows and system integrations</li><li data-start="1846" data-end="1959">Collaborate closely with AI/ML engineers, product managers, and domain experts across multiple business units</li><li data-start="1960" data-end="2072">Translate complex technical capabilities into usable, scalable, and production-ready application experiences</li><li data-start="2073" data-end="2159">Ensure high standards for usability, reliability, performance, and maintainability</li><li data-start="2160" data-end="2283">Contribute to application-level architecture decisions and help define UX and workflow patterns for AI-enabled products</li></ul> Qualifications <ul><li data-start="1178" data-end="1290">Design and implement end-to-end AI-based applications, including frontend user interfaces and backend services</li><li data-start="1291" data-end="1475">Build applications that integrate AI workflows with Keysight hardware, software, and services, including design and calibration software, emulation tools, and AI platforms</li><li data-start="1476" data-end="1632">Develop intuitive user experiences for AI workflows such as data management, model training and fine-tuning, inference, optimization, and explainability</li><li data-start="1633" data-end="1748">Design, implement, and maintain backend APIs and services that orchestrate AI workflows and system integrations</li><li data-start="1749" data-end="1869">Build and maintain CI/CD pipelines to support reliable development, testing, and deployment of AI-based applications</li><li data-start="1870" data-end="2068">Ensure applications follow secure software development practices (e.g., secure SDLC / SSDF), including authentication, authorization, and proper use of encryption for data in transit and at rest</li><li data-start="2069" data-end="2174">Collaborate closely with AI/ML, AI platform, domain, and product teams across multiple business units</li><li data-start="2175" data-end="2287">Translate complex technical capabilities into usable, scalable, and production-ready application experiences</li><li data-start="2288" data-end="2374">Ensure high standards for usability, reliability, performance, and maintainability</li><li data-start="2375" data-end="2486">Contribute to application-level architecture decisions and help define patterns for scalable AI experiences</li><li data-start="2531" data-end="2617">Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field</li><li data-start="2618" data-end="2694">5+ years of experience building production-grade full-stack applications</li><li data-start="2695" data-end="2816">Strong experience with modern frontend frameworks (React preferred) and designing user interfaces for technical users</li><li data-start="2817" data-end="2917">Backend development experience using Python and/or Node.js, including building scalable services</li><li data-start="2918" data-end="3004">Experience designing and consuming RESTful APIs and service-oriented architectures</li><li data-start="3005" data-end="3106">Experience building data-driven applications that ingest, process, and visualize complex data</li><li data-start="3107" data-end="3217">Experience with CI/CD practices to support build, test, and deployment of production software applications</li><li data-start="3218" data-end="3363">Experience applying secure software development practices (e.g., secure SDLC / SSDF), including authentication, authorization, and encryption</li><li data-start="3364" data-end="3487">Strong software engineering fundamentals, including data structures, debugging, testing, and performance considerations</li><li data-start="3488" data-end="3590">Experience working in production codebases and collaborating in cross-functional engineering teams</li><li data-start="3591" data-end="3693">Ability to translate complex technical workflows into intuitive and usable application experiences</li></ul> <a style="color: #ff0000;" href="https://about.keysight.com/en/jobs/careers_privacy_statement.pdf" target="_blank" rel="noopener">Careers Privacy Statement</a> Keysight Technologies Inc. is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other protected categories under all applicable laws. Pay is based on experience, education and skills, most offers will be between the minimum and the midpoint of the Salary Range listed below.Colorado pay range: MIN $119,850 - MAX $199,750California pay range: MIN $129,450 - MAX 215,740 Note: For other locations, pay ranges will vary by region This role is eligible for Keysight Results Bonus Program US Employees may be eligible for the following benefits:<ul><li style="margin: 0in 0in 0in 1in;">Medical, dental and vision</li><li style="margin: 0in 0in 0in 1in;">Health Savings Account</li><li style="margin: 0in 0in 0in 1in;">Health Care and Dependent Care Flexible Spending Accounts</li><li style="margin: 0in 0in 0in 1in;">Life, Accident, Disability insurance</li><li style="margin: 0in 0in 0in 1in;">Business Travel Accident and Business Travel Health</li><li style="margin: 0in 0in 0in 1in;">401(k) Plan</li><li style="margin: 0in 0in 0in 1in;">Flexible Time Off, Paid Holidays</li><li style="margin: 0in 0in 0in 1in;">Paid Family Leave</li><li style="margin: 0in 0in 0in 1in;">Discounts, Perks</li><li style="margin: 0in 0in 0in 1in;">Tuition Reimbursement</li><li style="margin: 0in 0in 0in 1in;">Adoption Assistance</li><li style="margin: 0in 0in 0in 1in;">ESPP (Employee Stock Purchase Plan)</li></ul>

Design and implement end-to-end AI-based applications; build AI workflows; frontend and backend; secure SDLC; CI/CD; REST APIs; 5+ years full-stack; React; Python/Node.js.

<h2>About Us:</h2>
Liberate builds AI agents to automate manual tasks for the $2.7T insurance industry. We started with voice — the hardest and most valuable channel in insurance — and are now expanding into full workflow automation across sales, servicing, and claims. Our long-term vision is to build reasoning agents capable of handling the entire spectrum of insurance carrier and broker operations. We've raised $72M to date, including a $50M Series B in October 2025, backed by top-tier venture firms.
&nbsp;
Location: Boston or San Francisco (Berkeley), hybrid (2 days/week in office)
<h3>About the Role</h3>
As a Staff AI Agent Engineer, you are a force multiplier for customer deployments and agent quality. You own complex customer launches end to end and turn hard, bespoke problems into repeatable patterns. You operate with strong judgment, raise the engineering bar in the work, and reduce dependency on leadership by owning outcomes directly.
This role is hands-on, customer-facing, and deeply technical. You are not a solutions engineer. You are an engineer who ships.
<h3>What You’ll Do</h3>
<ul>
<li>Own complex, high-impact agent deployments from design through production</li>
<li>Design, build, and iterate on agent workflows, prompts, evals, and integrations</li>
<li>Turn customer-specific learnings into reusable templates, playbooks, and patterns</li>
<li>Partner with Product and Platform to influence roadmap based on real-world usage</li>
<li>Debug and improve agent behavior using structured evals, monitoring, and analysis</li>
<li>Lead technical reviews for agent design, launch readiness, and post-launch quality</li>
<li>Mentor other Agent Engineers through example and direct coaching</li>
<li>Raise the bar on engineering quality, operational rigor, and reuse in deployments</li>
</ul>
<h3>What We’re Looking For</h3>
Must Have
<ul>
<li>6+ years of professional software engineering experience</li>
<li>Strong hands-on experience building and operating production systems</li>
<li>Fluency in Python and modern backend systems (APIs, services, cloud)</li>
<li>Experience working with LLM-based systems, prompts, tools, or agent frameworks</li>
<li>Ability to reason about quality, failure modes, and operational risk</li>
<li>Comfort working directly with customers on technically complex problems</li>
<li>High ownership, good judgment, and the ability to operate under pressure</li>
</ul>
Nice to Have
<ul>
<li>Experience with agentic systems, eval frameworks, or AI observability</li>
<li>Prior work in B2B SaaS, enterprise software, or regulated environments</li>
<li>Experience turning bespoke solutions into reusable systems</li>
</ul>

Staff AI Agent Engineer

6+ years software engineering; Python; backend; LLMs; customer-facing; strong ownership.

6+ years software engineering; hands-on production systems; Python and backend/cloud; experience with LLM-based systems; customer-facing; strong ownership.

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