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Fastapi Developer Jobs in Santa Ana, CA (NOW HIRING)

Cotality

Principal Software Engineer (Python)

Irvine, CA · On-site +1

$144K - $194K/yr

Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing production web services in an asynchronous Python environment. * Semantic & Graph Expertise: Deep ...

Cotality

Principal Software Engineer (Python)

Irvine, CA · On-site

$144K - $194K/yr

Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing production web services in an asynchronous Python environment. * Semantic & Graph Expertise: Deep ...

Flip

Software Engineer

Los Angeles, CA

Software Engineer Reporting To: Software Engineer Lead LOCATION : Marina del Rey, CA (Onsite M - F ... FastAPI or Pipecat. * Familiarity with REST APIs, authentication methods (OAuth2, JWT, Bearer ...

SpaceX

Software Engineer, Simulation

Hawthorne, CA · On-site

$145K - $175K/yr

SOFTWARE ENGINEER, SIMULATION As a software engineer on the NDE & Materials Software team, you will ... Experience with web development frameworks such as Flask, SQLAlchemy, and FastAPI. * Front-end ...

SpaceX

Software Engineer, Simulation

Hawthorne, CA · On-site

$145K - $175K/yr

SOFTWARE ENGINEER, SIMULATION As a software engineer on the NDE & Materials Software team, you will ... Experience with web development frameworks such as Flask, SQLAlchemy, and FastAPI. * Front-end ...

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How much do fastapi developer jobs pay per hour?

As of Jul 14, 2026, the average hourly pay for fastapi developer in Santa Ana, CA is $54.98, according to ZipRecruiter salary data. Most workers in this role earn between $42.02 and $67.31 per hour, depending on experience, location, and employer.

What are some common challenges FastAPI Developers face when integrating third-party services or APIs?

FastAPI Developers often encounter challenges when integrating third-party services, such as handling authentication protocols (like OAuth2), ensuring compatibility between JSON schemas, and managing asynchronous calls to avoid performance bottlenecks. It’s also common to troubleshoot and adapt to inconsistencies in external API documentation or rate limits. Collaborating closely with frontend teams and DevOps professionals helps streamline these integrations, ensuring robust, scalable API solutions.

What is the difference between Fastapi Developer vs Backend Developer?

AspectFastapi DeveloperBackend Developer
Required SkillsPython, Fastapi, REST APIs, async programmingMultiple languages (Python, Java, Node.js), REST/SOAP APIs, databases
Work EnvironmentWeb development, API-focused projects, microservicesBroader software development, server-side logic, database management
Industry UsageTech startups, SaaS, API-driven servicesEnterprise, e-commerce, finance, various industries

Fastapi Developers specialize in building high-performance APIs using Python and Fastapi, often within microservices architectures. Backend Developers have a broader scope, working with multiple languages and technologies to develop server-side applications across various industries. While Fastapi Developers focus on API efficiency, Backend Developers handle comprehensive backend systems.

What are the key skills and qualifications needed to thrive as a FastAPI Developer, and why are they important?

To thrive as a FastAPI Developer, you need strong proficiency in Python programming, RESTful API design, and experience with FastAPI, often supported by a background in computer science or related fields. Familiarity with tools like SQL/NoSQL databases, Docker, and cloud platforms, as well as knowledge of asynchronous programming and API documentation tools like Swagger, is typically required. Excellent problem-solving skills, attention to detail, and effective communication set outstanding FastAPI developers apart. These skills are crucial for building reliable, high-performance APIs that meet modern application demands and facilitate seamless team collaboration.

What is a FastAPI Developer?

A FastAPI Developer is a software engineer who specializes in building web applications and APIs using the FastAPI framework, which is a modern, fast (high-performance) web framework for Python. FastAPI Developers are responsible for designing, developing, and maintaining backend services and APIs that are efficient, robust, and scalable. They often work with databases, authentication, and deployment processes, and ensure that the API endpoints adhere to best practices for security and performance. Their work is crucial for enabling smooth communication between front-end applications and backend systems.
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Principal Software Engineer /Senior Principal - TS/SCI

Principal Software Engineer /Senior Principal - TS/SCI

Rocket Lab

Long Beach, CA • On-site

$137K - $188K/yr

Full-time

Posted 24 days ago

Rocket Lab rating

8.8

Company rating: 8.8 out of 10

Based on 6 frontline employees who took The Breakroom Quiz

7th of 61 rated aerospace companies

Job description

Job Summary:
Rocket Lab is an end-to-end space company delivering responsive launch services and spacecraft design and manufacturing. They are seeking a highly skilled Principal Software Engineer/Senior Principal to lead the design, development, and delivery of scalable software systems for space-based applications.
Responsibilities:
• Lead Software Architecture Design: Define and evolve the end-to-end software architecture for flight and ground systems, ensuring scalability, reliability, security, and mission success.
• Develop Flight Software: Design application software for spacecraft operating within Real-Time Operating Systems (RTOS) such as VxWorks, or embedded Linux, including hardware drivers for spacecraft sensors and actuators such as IMUs, Star Trackers, and Reaction Wheels.
• Build Ground Software Systems: Architect and deploy web-based ground software platforms for spacecraft operations, integrating flight and ground systems to support diverse mission profiles.
• Test and Validate Systems: Develop unit tests within a Continuous Integration (CI) framework and collaborate with hardware-in-the-loop test engineers to verify combined software and hardware functionality.
• Collaborate and Lead: Provide technical direction and mentorship to engineering teams, act as a trusted advisor to leadership, and partner with stakeholders to align software systems with mission requirements.
• Support On-Orbit Operations: Ensure software performance in harsh environments and contribute to mission-critical operations.
Qualifications:
Required:
• Bachelor’s degree in engineering, computer science, or a related technical discipline.
• 12+ years of professional software development experience, including embedded systems and ground software.
• Proven expertise in architecting scalable and reliable software systems for aerospace or defense applications.
• Proficiency in C and C++ for embedded software development and python for testing.
• Experience with both DIO and AIO (Digital and Analog Inputs and Outputs).
• Experience with integrating hardware, including implementing ICDs, and debugging.
• Experience with deriving the Flight Software architecture from the electrical design including reading a master ICD list and/or schematics.
• Experience with RF ground to space communication.
• U.S. citizenship is required, due to program requirements.
• Active TS/SCI clearance is required.
Preferred:
• Advanced degree in aerospace engineering, computer science, or a related field.
• Strong systems-level thinking with the ability to balance technical trade-offs across performance, security, and maintainability.
• Experience developing software and drivers with CAN/CAN-FD, SpaceWire, and/or UDP/TCP protocols.
• Experience leading teams and working with program management to plan out work and staffing.
• Expertise in microservice architectures, distributed systems, and modern web frameworks such as FastAPI.
• Full-stack development experience, including: Backend: Golang, and/or Rust. Frontend: Typescript and Angular. Database: InfluxDB, PostgreSQL, or equivalent.
• Familiarity with CCSDS standards, including Space Packet Protocol, COP-1, and CFD.
• Experience designing software for autonomous vehicles operating in harsh environments, such as satellites or autonomous vehicles.
• Expertise in Git-based workflows, CI/CD pipelines, and Kubernetes orchestration.
• Understanding of modern authentication/authorization frameworks (e.g., OAuth).
Company:
Rocket Lab is an aerospace company that provides launch services, spacecraft design, and manufacturing of satellite components. Founded in 2006, the company is headquartered in Long Beach, USA, with a team of 1001-5000 employees. The company is currently Late Stage.

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