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Junior Fastapi Developer Jobs in California (NOW HIRING)

Cargomatic

Data Engineer

San Francisco, CA · On-site

$140K - $160K/yr

Build secure backend APIs (Python/FastAPI) to expose AI-powered capabilities * Ensure observability ... Mentor junior engineers and contribute to architectural standards and best practices * Drive ...

Cotality

Principal Software Engineer (Python)

Irvine, CA · On-site +1

$144K - $194K/yr

Mentor Senior & Junior Engineers: Act as a technical mentor and coach, sharing expertise in Python ... Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing ...

Emergence

Software Engineer - Full Stack

Irvine, CA · On-site

$120K - $140K/yr

Experience with FastAPI, asyncio, or event-driven architectures * Exposure to Docker, Kubernetes ... This isn't a junior role where you only fix bugs; you'll ship real features. Make an immediate ...

Emergence AI

Software Engineer - Full Stack

Irvine, CA

$120K - $140K/yr

Experience with FastAPI, asyncio, or event-driven architectures * Exposure to Docker, Kubernetes ... This isn't a junior role where you only fix bugs; you'll ship real features. Make an immediate ...

Cotality

Principal Software Engineer (Python)

Irvine, CA · On-site

$144K - $194K/yr

Mentor Senior & Junior Engineers: Act as a technical mentor and coach, sharing expertise in Python ... Expert Python/FastAPI Developer: Proven experience in designing, scaling, and maintaining existing ...

LLNL

Senior Full Stack Software Engineer

Livermore, CA · On-site

... FastAPI), or Node (Express, Nest, Fastify). * Design, develop, test, and maintain components of a ... Advanced experience as a full stack software developer, with contributions to both front-end ...

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Junior Fastapi Developer information

What is the difference between Junior Fastapi Developer vs Junior Python Developer?

AspectJunior Fastapi DeveloperJunior Python Developer
Required CredentialsBasic Python knowledge, familiarity with FastapiBasic Python knowledge, possibly some frameworks
Work EnvironmentWeb backend development, API creationGeneral software development, scripting
Employer & Industry UsageTech companies, startups, web servicesBroad industry, including data analysis, automation
Common Search & ComparisonYesYes

The main difference is that a Junior Fastapi Developer specializes in building APIs using Fastapi, while a Junior Python Developer has broader Python programming skills without specific focus on web APIs. Fastapi developers typically work in web backend environments, whereas Python developers may work across various domains.

What are some typical challenges a Junior FastAPI Developer may face when joining a new team?

As a Junior FastAPI Developer, you may encounter challenges such as adapting to established codebases, understanding the team's API design patterns, and ensuring your code aligns with both FastAPI best practices and your organization's standards. Collaborating closely with senior developers and participating in code reviews can help accelerate your learning process. Additionally, you may need to quickly familiarize yourself with related tools such as Docker, Git, and testing frameworks, as well as the team's workflow for deploying and maintaining APIs in production environments.

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

To thrive as a Junior FastAPI Developer, you need foundational knowledge of Python programming, RESTful API concepts, and experience working with FastAPI frameworks, supported by a relevant degree or coding bootcamp. Familiarity with Git for version control, SQL or NoSQL databases, and containerization tools like Docker is typically expected. Strong problem-solving skills, eagerness to learn, and effective communication make candidates stand out in collaborative development environments. These competencies ensure efficient, high-quality API development and seamless teamwork in agile software projects.

What are Junior FastAPI Developers?

Junior FastAPI Developers are entry-level software engineers who specialize in building web applications and APIs using FastAPI, a modern Python web framework. They are responsible for writing, testing, and maintaining backend code, often under the guidance of more experienced developers. Their tasks typically include developing RESTful APIs, integrating databases, and ensuring application performance and security. Junior FastAPI Developers usually have a basic understanding of Python, web technologies, and REST principles. They play an important role in supporting projects, learning best practices, and growing their technical skills.
What are the most commonly searched types of Fastapi Developer jobs in California? The most popular types of Fastapi Developer jobs in California are:
What are popular job titles related to Junior Fastapi Developer jobs in California? For Junior Fastapi Developer jobs in California, the most frequently searched job titles are:
What job categories do people searching Junior Fastapi Developer jobs in California look for? The top searched job categories for Junior Fastapi Developer jobs in California are:
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Junior Fastapi Developer jobs near you
Senior Software Engineer, AI and ML Platforms

Senior Software Engineer, AI and ML Platforms

Bio-Techne

San Jose, CA • On-site

$132K - $217K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 13 days ago

Bio-Techne rating

8.8

Company rating: 8.8 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

Job description

By joining Bio-Techne, you'll join a company with a powerful and positive purpose of enabling cutting-edge research in Life Sciences and Clinical Diagnostics. Bio-Techne, and all of its brands, provides tools for researchers to further treat and prevent disease worldwide.
Pay Range:
$132,400.00 - $217,600.00
Bio-Techne develops innovative software and instrumentation solutions that help scientists generate accurate, reproducible biological data at scale. As our software portfolio evolves toward SaaS-based delivery models, we are embedding AI-driven intelligence directly into our platforms to improve usability, automation, and scientific insight.
This Senior Software Engineer role sits at the intersection of AI engineering, cloud-native microservices, and enterprise SaaS platforms. You will lead the design and implementation of scalable backend services that power AI-enabled features across Bio-Techne software products. This role is ideal for an experienced engineer who enjoys owning architecture, mentoring others, and delivering production-grade systems used in regulated scientific environments.
This is a hybrid position based out of our San Jose, CA site.
Responsibilities:
  • Lead the design and development of cloud-native, microservices-based backend systems supporting Bio-Techne software products
  • Design, build, and deploy AI-powered services, including LLM-based assistants, recommendations, and automation workflows
  • Develop scalable REST and event-driven APIs that integrate AI services with instrument software and customer-facing applications
  • Architect and implement Retrieval-Augmented Generation (RAG) pipelines over scientific, operational, and customer data
  • Partner with central IT, Enterprise Data, and Infrastructure teams to align AI services with shared platform standards. This includes MLOps practices, data access governance, observability frameworks, and security controls, ensuring that POC work can be reliably promoted to production environments.
  • Establish and maintain MLOps practices for model versioning, evaluation, monitoring, and retraining - ensuring AI services degrade gracefully and remain reliable over time.
  • Collaborate with product management, scientists, and UX teams to translate scientific workflows into AI-driven software capabilities
  • Ensure reliability, observability, security, and performance of distributed services operating in production environments
  • Drive technical standards for code quality, service ownership, and system architecture
  • Mentor junior engineers and contribute to design reviews, code reviews, and technical decision-making
  • Document system architecture, APIs, and operational considerations for internal and cross-functional stakeholders

Qualifications
Education & Experience:
  • B.S. in Computer Science, Software Engineering, or related technical field and 7+ years of relevant experience developing and operating production-grade software systems
  • Or, M.S. in Computer Science, AI/ML, or related discipline and 5+ years of relevant experience
  • Or, equivalent combination of relevant education and experience

Knowledge, Skills, and Abilities:
  • Strong proficiency in Python, Java, or similar backend languages with hands-on microservices experience
  • Demonstrated experience designing and operating cloud-native SaaS platforms
  • Experience building RESTful APIs using frameworks such as FastAPI, Flask, or Spring Boot
  • Hands-on experience integrating AI/ML or LLM-based services into real-world applications
  • Solid understanding of distributed systems, asynchronous processing, and service-to-service communication
  • Experience with containerization (Docker) and CI/CD pipelines
  • Strong written and verbal communication skills, including experience working across engineering and scientific teams
  • Strong ability to understand how systems work under the hood, with the ability to reason about and implement the underlying algorithms, evaluate the tradeoffs, and build new capabilities
  • Demonstrated ability to implement ML or information-retrieval algorithms; not solely through high-level frameworks (examples: custom retrieval, ranking and re-ranking strategies, embedding and chunking approaches, evaluation pipelines, or inference-time optimizations)
  • Demonstrated track record of designing and building novel systems or components, rather than primarily integrating off-the-shelf tools
  • Strong computer-science fundamentals: data structures, algorithmic complexity

Preferred Qualifications:
  • Experience with cloud platforms such as AWS or Azure
  • Familiarity with Kubernetes and multi-service deployment strategies
  • Experience managing the ML lifecycle, including but not limited to EDA, feature engineering, model training/tuning, validation, deployment, and maintenance
  • Experience with vector databases (pgvector, FAISS, Pinecone, or similar)
  • Experience with RAG frameworks such as LangChain or LlamaIndex
  • Exposure to scientific software, laboratory instrumentation, or regulated environments (GxP)
  • Experience designing systems with multi-tenant SaaS considerations and feature-based licensing

Why Join Bio-Techne:
  • We offer competitive insurance benefits starting on day one: medical, dental, vision, life, short-term disability, long-term disability, pet, and legal and ID shield.
  • We invest in our employees' financial futures through 401k plans, an employee stock purchase plan (ESPP), Health Saving Account (HSA), Flexible Spending Account (FSA), and Dependent Care FSA.
  • We empower our employees develop their careers through mentorship, promotional opportunities, training and development, tuition reimbursement, internship programs, and more.
  • We offer employee resource groups, volunteer paid time off, employee events, and charity drives to build a culture of caring and belonging.
  • We offer an accrued leave policy with paid holidays, paid time off, and paid parental leave.
  • We foster a culture of empowerment and innovation, where employees feel valued and encouraged to bring their new ideas to the table.

Bio-Techne is an E-Verify Employer in the United States.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.
To protect the interests of all, Bio-Techne will not accept unsolicited resumes from any source other than a candidate application. Any unsolicited resumes sent to Bio-Techne will be considered Bio-Techne property.
If you require a reasonable accommodation to complete an application, participate in an interview, or take part in any other stage of the recruitment process, please contact hr@bio-techne.com for assistance.

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