Python Fastapi Developer Jobs in Los Angeles, CA

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 Senior Professional, Software Development Engineering position is responsible for independently designing, developing, and testing software systems for enhancements and new products. This role focuses on creating scalable, quality, flexible, and user-friendly applications while applying engineering principles, resolving complex bugs, and mentoring junior colleagues.

Job Responsibilities:

• Drive the end-to-end development of the Cotality Unified Semantic Hub and its associated Ops Portal, bridging the Semantic Layer with bulk repositories to ensure high-performance data integration.

• Architect Automated YAML Generation: Build and maintain the API-enabled engine (Python microservices) responsible for generating OSI-compliant, AI-ready metadata YAML files for delivery to Snowflake and Databricks.

• Develop Ontology Authoring Tooling: Design and implement interactive UI components that enable domain modelers, data stewards, and SMEs to create, view, and manage the unified enterprise ontology without direct code edits.

• Operationalize Data Governance & Scale: Build functional components to refine "fiduciary-grade" metadata. Implement features to monitor data quality, ensuring the Hub remains the single source of truth for all AI translation tasks.

• Full-Lifecycle Software Development: Design, code, test, and debug complex software across a broad system scope. Develop detailed specifications to satisfy both internal and external customer requirements.

• Drive Code Excellence & Testing: Write clean, maintainable, and well-documented code utilizing Test-Driven Development (TDD). Collaborate with the QA team to define scope, improve testing methods, and ensure system reliability.

• Collaborate & Consult: Work closely with Technical Anchors, Product Managers, and business partners to evaluate feasibility, define technical requirements, and translate business needs into actionable architectural solutions.

• Provide Operational Support & Innovation: Diagnose and resolve complex production incidents. Research new technologies/platforms and actively disseminate knowledge throughout the department.

• Mentorship & Leadership: Mentor junior colleagues through rigorous code reviews, sharing expertise on API design, and software development lifecycles.

• Apply engineering principles and methodologies to assigned projects and tasks.

• Communicate progress regularly and identify blocking issues to maintain project momentum.

Job Qualifications:

• Education & Experience: Bachelor's or Master's degree in Computer Science, AI, or a related field, with 5+ years of professional software engineering experience working through all phases of development.

• Backend & API Mastery: Expert-level Python/FastAPI developer with a strong understanding of scalable microservices architecture and API integrations.

• Full-Stack Capability & UI/UX: Proficiency in building interactive UIs and authoring portals tailored specifically for technical users (data stewards, modelers, SMEs).

• Data Platform Proficiency: Strong hands-on experience with Snowflake and Databricks, specifically regarding how they consume and map external metadata.

• Semantic AI & Governance Mindset: Solid understanding of Knowledge Representation and Ontologies, paired with the ability to design systems that maintain consistency across high-volume enterprise data assets.

• Cloud Architecture: Experience deploying, maintaining, and managing scalable AI/data services in cloud environments (GCP, AWS, or Azure).

• Agile Execution: Familiarity with Agile development methodologies (Jira, Confluence) and a proven ability to translate conceptual ideas into structured projects and tasks.

• Communication & Collaboration: Excellent problem-solving and analytical skills with a keen attention to detail.

• A customer-oriented mindset with a track record of meeting commitments and collaborating seamlessly with cross-functional stakeholders.

• Strong proficiency in software development principles and methodologies.

• Proven track record of delivering components for larger functional areas or applications.

• Strong problem-solving skills for investigating and fixing software bugs.

• Experience mentoring junior colleagues and sharing technical knowledge.

#LI-Hybrid

Annual Pay Range:

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 Opportunityemployer committed to attracting and retaining thebest-qualified people available, without regard torace, color, religion, national origin, gender, sexualorientation, gender identity, age, disability or statusas a veteran of the Armed Forces, or any other basisprotected by federal, state or local law. Cotalitymaintains a Drug-Free Workplace.

Cotality is fully committed to a work environment that embraces everyone's uniquecontributions, experiences and values. We offer anempowered work environment that encouragescreativity, initiative and professional growth andprovides a competitive salary and benefits package. We are better together when we support and recognize our differences.

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