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Backend Intern Jobs in California (NOW HIRING)

Cheiron

Agent Engineering Intern

Los Altos, CA · On-site

$35 - $55/hr

About the Role We're looking for an Agent Engineering Intern to build new agent-driven workflows ... Build the backend services, data models, APIs, and focused product surfaces required to make the ...

SupportFinity™

Software Engineer Intern

San Francisco, CA · On-site

$8.0K - $12K/mo

Role Description As an software engineering intern at Mercator, you'll work on core systems that ... or backend and simulation infrastructure. You'll prototype quickly and iterate with real customer ...

EV Realty

Intern, Data Analytics

San Francisco, CA · On-site +1

The Role As a Data Analytics Intern you will help build and maintain various analytics tools and ... Realty's backend infrastructure and tools * Develop Python/SQL scripts for data analysis ...

EV Realty

Intern, Data Analytics

San Francisco, CA · On-site

The Role As a Data Analytics Intern you will help build and maintain various analytics tools and ... Realty's backend infrastructure and tools * Develop Python/SQL scripts for data analysis ...

Hadrian Automation

Robotics Engineer Intern

Torrance, CA · On-site

$46.15 - $50.71/hr

Contribute to backend services, APIs, and data pipelines used across engineering, operations, and ... An intern's hourly rate within this range will be based on several factors, including, but not ...

Multicoin

Robotics Engineer Intern

Los Angeles, CA · On-site

$46.15 - $50.71/hr

Contribute to backend services, APIs, and data pipelines used across engineering, operations, and ... An intern's hourly rate within this range will be based on several factors, including, but not ...

New

Hadrian Automation

Robotics Engineer Intern

Los Angeles, CA · On-site

$46.15 - $50.71/hr

Contribute to backend services, APIs, and data pipelines used across engineering, operations, and ... An intern's hourly rate within this range will be based on several factors, including, but not ...

Cheiron

Agent Engineering Intern

Los Altos, CA · On-site

$35 - $55/hr

About the Role We're looking for an Agent Engineering Intern to build new agent-driven workflows ... Build the backend services, data models, APIs, and focused product surfaces required to make the ...

Etched

DFT Intern

San Jose, CA · On-site

$17.50 - $23.50/hr

Job Summary As a DFT Intern at Etched, you will help review and refine DFT flow automation to ... You will work across frontend and backend design teams, contribute to DFT verification (including ...

Etched

DFT Intern

San Jose, CA · On-site

$17.50 - $23.50/hr

Job Summary As a DFT Intern at Etched, you will help review and refine DFT flow automation to ... You will work across frontend and backend design teams, contribute to DFT verification (including ...

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Showing results 41-60

All JobsBackend Intern JobsBackend Intern Jobs in California

Backend Intern information

What does a backend intern do?

A Backend Intern assists in developing and maintaining the server-side logic, databases, and APIs that power web and mobile applications. They typically work with programming languages like Python, Java, or Node.js and interact with databases such as MySQL or MongoDB. Their responsibilities may include writing clean code, testing and debugging applications, and collaborating with front-end developers to ensure seamless integration. Backend Interns also help optimize application performance and may participate in code reviews and documentation.

What are some common challenges backend interns face when joining a new development team?

Backend Interns often encounter challenges such as understanding existing codebases, adapting to various development tools, and learning team-specific workflows. Integrating with ongoing projects may require quickly grasping the architecture and deployment processes used by the team. Open communication with mentors and proactive learning are key to overcoming these hurdles and contributing effectively. Many teams offer onboarding sessions and pair programming to help interns acclimate and build confidence.

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

To thrive as a Backend Intern, you need a solid understanding of programming languages like Python, Java, or Node.js, and a basic grasp of database concepts, often supported by coursework or personal projects. Familiarity with version control systems (such as Git), RESTful APIs, and cloud platforms is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication make candidates stand out. These skills and qualities are crucial for rapidly adapting to real-world development environments and contributing effectively to team-based software projects.

What are the most commonly searched types of Backend jobs in California?

The most popular types of Backend jobs in California are:

What are popular job titles related to Backend Intern jobs in California?

For Backend Intern jobs in California, the most frequently searched job titles are:

What job categories do people searching Backend Intern jobs in California look for?

The top searched job categories for Backend Intern jobs in California are:

What cities in California are hiring for Backend Intern jobs?

Cities in California with the most Backend Intern job openings:

Backend Intern jobs near you
Infographic showing various Backend Intern job openings in California as of August 2026, with employment types broken down into 14% Internship, 1% As Needed, 53% Full Time, 28% Part Time, 1% Temporary, and 3% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Agent Engineering Intern

Los Altos, CA • On-site

Cheiron
Business Management Consulting • 51 - 200 employees
Learn more about Cheironexternal

$35 - $55/hr

Full-time, Internship

Posted 9 days ago

Job description

Los Altos, CA • Engineering • Internship • Semester/quarter or summer • Fully in-person
Company Overview
Cheiron recently raised an $8M seed round led by Menlo Ventures, and now has $13M total raised. The round also included strategic support from Moderna co-founder Robert Langer, former Pfizer Chief Medical Officer Freda Lewis-Hall, Chai Discovery co-founder and CEO Josh Meier, former Starbucks CEO Laxman Narasimhan, and former Apple AI chief John Giannandrea.
Cheiron is building the first AI-native operating system designed to represent an entire drug program as a single connected system. The platform helps biopharma teams represent, reason over, and stress-test the claims, evidence, decisions, and commitments, driving the drug program to completion.
About the Role
We're looking for an Agent Engineering Intern to build new agent-driven workflows inside Cheiron's product.
Cheiron's agents do more than generate an answer. They break complex objectives into steps, retrieve evidence, call tools, maintain state across long-running work, recover from failures, and produce structured results that a person can review and trust. You will own a bounded workflow and help take it from an ambiguous problem to a reliable, working product.
This is an Applied Engineering Role. We care about strong software fundamentals, hands-on ownership, and evidence that you have built nontrivial systems yourself. The role is best suited to undergraduate and master's students who are already serious builders.
What You'll Do
  • Design and implement new agent workflows with explicit state, task decomposition, tool use, and typed outputs.
  • Build retrieval and citation paths that ground important outputs in source evidence.
  • Add evaluation, tracing, retries, observability, and recovery behavior for multi-step execution.
  • Build the backend services, data models, APIs, and focused product surfaces required to make the workflow useful.
  • Test agent behavior against realistic success cases, failure cases, and incomplete evidence.
  • Work directly with engineers and domain experts, demonstrate progress frequently, and make pragmatic scope decisions.

Requirements
  • Currently pursuing an undergraduate or master's degree in computer science, computer engineering, or a related technical field.
  • Strong programming fundamentals and experience building a substantial software project, developer tool, backend system, or open-source contribution.
  • Hands-on experience building a nontrivial agent, retrieval system, tool-using workflow, evaluation harness, or multi-step automation system.
  • Clear personal ownership of the work: you can explain what you implemented, the decisions you made, and what you would improve.
  • Ability to reason about state, failure modes, grounding, evaluation, and engineering tradeoffs-not only prompts and model selection.
  • High agency and comfort working through ambiguous problems in a fast-moving environment.
  • Ability to work fully in person in Los Altos. Semester or quarter interns must commit at least 20 hours per week; summer interns should be available full time.

Nice to Have
  • Experience with Python, FastAPI, Postgres, agent frameworks, retrieval systems, or vector databases.
  • Backend, distributed-systems, infrastructure, data-pipeline, or end-to-end product experience.
  • Experience with tests, deployment, observability, security, or reliable failure handling.
  • Experience building systems involving citations, provenance, human review, or other high-stakes correctness requirements.
  • Strong open-source work, prior software-engineering internships, or an independently shipped product with real users.

Compensation
$35-$55 per hour. Exact compensation within the range depends on demonstrated expertise, relevant experience, and the time the student can commit.
Location, Relocation & Visa
This role is fully in person in Los Altos, CA. Academic-term interns must be able to work from the office at least 20 hours per week; summer interns should expect a full-time commitment. Relocation assistance may be offered selectively to a strong candidate and is not guaranteed. Candidates of any nationality or visa status may be considered when the internship can be employed legally.
Interview Process
Semester/quarter route:
  • 30-minute introductory call → one-day onsite in Los Altos → decision.

Summer route:
  • 15-minute introductory call → take-home assignment → take-home interview → interview with Backend Team → decision.
  • For some summer candidates, the final two interviews may instead be combined into a one-day onsite in Los Altos.

Equal Opportunity & Accommodation
Cheiron is an equal-opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by law.

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