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Internship Sr Python Developer Jobs in Irvine, CA

Cotality

Principal Software Engineer (Python)

Irvine, CA · On-site

$144K - $194K/yr

This senior-level position is responsible for creating scalable, high-quality software solutions ... Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing ...

Logic

Sr Project Cost Analyst

Pomona, CA · On-site

$84K - $107K/yr

We are seeking an experienced Sr Project Cost Analyst to support a portfolio of capital ... Working knowledge of Python programming and basic familiarity with MS Access. * Strong ...

Danaher

Software Engineer Internships

Pomona, CA · On-site

Preference for students who have completed 3+ years of coursework by the internship start date * Experience with object-oriented programming (e.g., C#, Java, Python, C++) * Strong analytical and ...

Boeing

DevOps Developer (Lead or Senior)

Seal Beach, CA · On-site

$176K - $239K/yr

DevOps Developer (Lead or Senior) Company: The Boeing Company Boeing Defense, Space and Security ... Experience with scripting, particularly in shell scripting in sh and csh variants, Bash, Python ...

Boeing

DevOps Developer (Lead or Senior)

Seal Beach, CA · On-site

$176K - $239K/yr

DevOps Developer (Lead or Senior) Company: The Boeing Company Boeing Defense, Space and Security ... Experience with scripting, particularly in shell scripting in sh and csh variants, Bash, Python ...

VSolvit

JUNIOR SOFTWARE DEVELOPER (C++)

Norco, CA · On-site

$36 - $48/hr

Candidates with internship experience, academic projects, personal software projects, or ... Develop software solutions using C++ under the guidance of senior developers and technical leads

Apolis

Senior C++/ Java Developer

Irvine, CA · On-site

Apolis is seeking a Senior C++ / Java Developer with strong experience in modern C++, backend ... Preferred : • Multithreaded C++ programming. • Boost Libraries. • Python (pytest). • BDD ...

Fervorly

SRE AIops Engineer (AWS)

Irvine, CA · On-site

$61.25 - $81.25/hr

Senior SRE AIOps Engineer (AWS) Experience Level: 5-8 Years Location: USA Primary Environment ... AWS DevOps Guru * Datadog Watchdog * Dynatrace Davis * Strong Python programming skills with AWS ...

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Internship Sr Python Developer information

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$59K

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$209.3K

How much do internship sr python developer jobs pay per year?

As of Jul 13, 2026, the average yearly pay for internship sr python developer in Irvine, CA is $152,395.00, according to ZipRecruiter salary data. Most workers in this role earn between $130,400.00 and $175,500.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an Internship Sr Python Developer, and why are they important?

To thrive as an Internship Sr Python Developer, you need strong proficiency in Python programming, a solid understanding of software development principles, and ideally a degree in computer science or a related field. Familiarity with tools like Git, frameworks such as Django or Flask, and knowledge of databases are typically expected, while certifications in Python or web development can be advantageous. Excellent problem-solving skills, teamwork, and effective communication set candidates apart in collaborative tech environments. These competencies are crucial for delivering quality code, integrating seamlessly with development teams, and adapting to evolving project requirements.

What does an Internship Sr Python Developer do?

An Internship Sr Python Developer is typically an intern with advanced Python programming skills who assists with software development projects, often working on challenging tasks under the guidance of senior developers. They may be involved in coding, debugging, testing, and maintaining Python applications, as well as collaborating with team members on project requirements and solutions. This role is ideal for students or recent graduates looking to gain hands-on experience in real-world Python development environments, and it often serves as a stepping stone to full-time developer positions.

What typical projects or tasks can an Internship Sr Python Developer expect to work on during their internship?

As an Internship Sr Python Developer, you can expect to contribute to real-world projects such as developing new features for web applications, automating data processing tasks, or improving existing codebases for better performance and readability. You may also be involved in code reviews, debugging, writing unit tests, and collaborating closely with other developers, QA engineers, and product managers. This hands-on experience is designed to deepen your proficiency in Python while exposing you to industry-standard tools and agile development practices. The internship often provides mentorship opportunities and exposure to collaborative workflows, preparing you for more advanced roles in software development.
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Principal Software Engineer (Python)

Cotality

Irvine, CA • On-site

$144K - $194K/yr

Full-time

Medical, Life, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Job description

At Cotality, we are driven by a single mission-to make the property industry faster, smarter, and more people-centric. Cotality is the trusted source for property intelligence, with unmatched precision, depth, breadth, and insights across the entire ecosystem. Our talented team of 5,000 employees globally uses our network, scale, connectivity and technology to drive the largest asset class in the world. Join us as we work toward our vision of fueling a thriving global property ecosystem and a more resilient society.
Cotality is committed to cultivating a diverse and inclusive work culture that inspires innovation and bold thinking; it's a place where you can collaborate, feel valued, develop skills and directly impact the real estate economy. We know our people are our greatest asset. At Cotality, you can be yourself, lift people up and make an impact. By putting clients first and continuously innovating, we're working together to set the pace for unlocking new possibilities that better serve the property industry.
Job Description:
The hybrid-remote Principal Software Development Engineer leads the design, development, and testing of complex software systems and applications. This senior-level position is responsible for creating scalable, high-quality software solutions while providing technical leadership, driving engineering excellence, and providing mentorship to engineering teams.
The Mission: You will take the helm of our existing Semantic Layer Web Service and lead its evolution into a high-scale, automated intelligence platform. Your mission is to break the current manual bottlenecks-moving the service from 130 manually curated attributes to a system capable of managing thousands. You will bridge the gap between "boutique" internal tools and a fully automated, GraphRAG-enabled enterprise ecosystem.
Job Responsibilities:
  • Architect and Evolve the Semantic Layer: Lead the redesign and scaling of the existing Semantic Layer Web Service, transitioning it from a manual 130-attribute baseline to an automated, high-availability enterprise intelligence platform.
  • Take the Team Anchor Role: Serve as the primary technical lead for the delivery team, owning the architectural vision for Knowledge Representation and Semantic Search while ensuring "fiduciary-grade" performance as the system scales to 1,000+ attributes.
  • Implement Advanced Reasoning: Design and deploy Hybrid Graph/Vector search architectures (GraphRAG) to enable complex global reasoning across disparate enterprise data assets.
  • Develop High-Performance AI Services: Utilize Git or similar, Unix command line, Python, FastAPI, FastMCP, and ADK to build and enhance robust backend services that bridge core enterprise data with Agentic AI.
  • Model Optimization (LLM & SLM): Partner with the Data Science team to architect intelligent routing logic that leverages Small Language Models (SLMs) for high-speed classification/extraction and Large Language Models (LLMs) for complex synthesis.
  • Automate Metadata Ingestion: Collaborate with the Knowledge Engineering team to build automated workflows for Ontology Management and Entity Linking, eliminating single-resource bottlenecks and manual curation constraints.
  • Establish Systematic Evaluation: Collaborate with Knowledge Engineering and Data Science teams to replace "vibe checks" with rigorous automated testing frameworks, utilizing metrics like Faithfulness, Answer Relevance, and Context Precision (RAGAS) to ensure quality during rapid scaling.
  • Conduct Expert Code Reviews: Ensure high code quality, adherence to AI engineering standards, and architectural integrity across the Python/AI stack.
  • Drive Test-Driven Development (TDD): Implement rigorous TDD practices, writing comprehensive unit and integration tests to ensure the reliability of non-deterministic semantic pipelines.
  • Apply Advanced Algorithms: Utilize specialized algorithms for Entity Disambiguation and Ontology Evolution to solve complex knowledge-graph scaling and schema-drift challenges.
  • Optimize Performance and Scalability: Independently plan and execute system optimizations to ensure the Semantic Layer remains performant under enterprise-scale loads and high-dimensional search requirements.
  • Troubleshoot Complex AI Issues: Resolve deep technical challenges related to model hallucinations, "Lost in the Middle" context window phenomena, and retrieval latency.
  • Stay Updated on Emerging AI Trends: Monitor and provide recommendations on the rapidly evolving AI landscape, including SLM success areas, prompt engineering, and synthetic data generation.
  • Mentor Senior & Junior Engineers: Act as a technical mentor and coach, sharing expertise in Python, Semantic AI, and Cloud Architecture to upskill the broader engineering organization.

Job Qualifications:
  • Education & Experience: Master's or Bachelor's degree in Computer Science, AI, or a related field, with 10+ years of professional software engineering experience.
  • Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing production web services in an asynchronous Python environment.
  • Semantic & Graph Expertise: Deep understanding of Knowledge Representation, Ontologies, and Graph Reasoning; experience taking "boutique" internal tools and turning them into high-availability platforms.
  • Advanced RAG Knowledge: Professional experience with Vector Databases, Hybrid Search, and advanced retrieval strategies (e.g., Query Expansion, HyDE, and Reranking).
  • AI Orchestration Mastery: Advanced proficiency in ADK or similar model abstraction tools, with a strong grasp of the operational trade-offs between LLMs and SLMs.
  • Evaluation Rigor: Familiarity with AI evaluation frameworks (RAGAS, DeepEval) and the use of LLMs to generate synthetic testing suites for benchmarking.
  • Analytical & Scale-Minded: Strong ability to apply complex data structures and algorithms to solve scaling bottlenecks and non-deterministic logic problems.
  • Cloud Architecture: Experience deploying and managing scalable AI services in cloud environments (GCP, AWS, or Azure).
  • Communication & Leadership: Excellent communication skills with a track record of leading high-performing engineering PODs and collaborating with cross-functional stakeholders.

#LI-Hybrid
Annual Pay Range:
154,600 - 180,000 USD
Application Window:
This opportunity is expected to remain posted through the date identified below, subject to business needs.
Thrive with Cotality
At Cotality, we offer more than just a job, we provide a benefits experience designed to support your whole self. From a flexible working model to competitive time off and standout health coverage with meaningful perks and growth opportunities, our package is built to help you thrive at work and in life.
Highlights, depending on role classification, include:
  • Time off: Generous PTO and 11 paid holidays, plus well-being and volunteer time off.
  • Family Support: Up to 16 weeks of fully paid parental leave and a baby stipend.
  • Health: Multiple medical plan options with mental health and wellness support offerings.
  • Retirement: 401(k) with company match and vesting after one year.
  • Financial Perks: $400 annual well-being stipend and tuition assistance up to $5,250.
  • Extras: Recognition Rewards, Referral bonuses, exclusive discounts and more!

Cotality is an Equal Opportunity employer committed to attracting and retaining the best-qualified people available, without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability or status as a veteran of the Armed Forces, or any other basis protected by federal, state or local law. Cotality maintains a Drug-Free Workplace.
Cotality is fully committed to a work environment that embraces everyone's unique contributions, experiences and values. We offer an empowered work environment that encourages creativity, initiative and professional growth and provides a competitive salary and benefits package. We are better together when we support and recognize our differences.
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