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Part Time Backend Developer Jobs in California (NOW HIRING)

Medicast

iOS Developer

San Francisco, CA · On-site

$61 - $84/hr

Google Maps and Analytics, Urban Airship, etc.) - Integrate with proprietary backend REST-based ... We are accepting intern, part-time, and full-time candidates for this role, as long as you meet the ...

Lucid Motors

Part Time Brand Ambassador

San Diego, CA · On-site

We achieve this through deep vertical integration, with design, engineering, and production ... Provide backend operational support (order paperwork, order/vehicle status clarity) * Support ...

Lucid Motors

Part Time Brand Ambassador

San Diego, CA · On-site

We achieve this through deep vertical integration, with design, engineering, and production ... Provide backend operational support (order paperwork, order/vehicle status clarity) * Support ...

All JobsBackend Developer JobsPart Time Backend Developer JobsPart Time Backend Developer Jobs in California

Part Time Backend Developer information

What is a Part Time Backend Developer?

A Part Time Backend Developer is a software professional who focuses on building and maintaining the server-side logic, databases, and APIs of web applications, but works fewer hours than a full-time developer, typically on a flexible schedule. They are responsible for ensuring that the application's backend functions smoothly, securely, and efficiently. Part time backend developers often collaborate with frontend developers, designers, and project managers to deliver robust and scalable solutions. This role is ideal for those who need a flexible work arrangement, such as students, parents, or freelancers.

What is the difference between Part Time Backend Developer vs Part Time Frontend Developer?

AspectPart Time Backend DeveloperPart Time Frontend Developer
Required SkillsServer-side languages (e.g., Python, Java), databases, APIsHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBackend systems, server management, database integrationClient-side interfaces, user experience design
Common UsageBuilding and maintaining server logic, data storageDesigning and implementing website interfaces

Both roles often require similar certifications like coding bootcamps or relevant degrees. They operate in tech companies, startups, and agencies, frequently part-time. The main difference lies in their focus: backend developers handle server and database work, while frontend developers focus on user interfaces and experience.

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

To thrive as a Part Time Backend Developer, a solid grasp of programming languages like Python, Java, or Node.js, along with database management and API development experience, is essential. Familiarity with tools such as Git for version control, Docker for containerization, and knowledge of cloud platforms or relevant certifications are typically required. Strong problem-solving abilities, time management, and effective communication are standout soft skills for this role. These skills ensure reliable, scalable backend systems and efficient collaboration with teams, even within limited work hours.

What are some common challenges faced by part-time backend developers, and how can they be addressed?

Part-time backend developers often face challenges related to time management and staying aligned with the rest of the development team. Since backend projects can involve complex systems and ongoing collaboration, it's important to maintain clear communication and regularly sync with team members. Utilizing project management and code documentation tools, as well as attending key stand-up meetings, can help part-time developers stay informed and productive. Additionally, clearly defining deliverables and setting realistic deadlines can ensure a smooth workflow despite limited hours.
What are the most commonly searched types of Backend Developer jobs in California? The most popular types of Backend Developer jobs in California are:
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What job categories do people searching Part Time Backend Developer jobs in California look for? The top searched job categories for Part Time Backend Developer jobs in California are:
What cities in California are hiring for Part Time Backend Developer jobs? Cities in California with the most Part Time Backend Developer job openings:
Part Time Backend Developer jobs near you
Infographic showing various Part Time Backend Developer job openings in California as of July 2026, with employment types broken down into 89% Full Time, 6% Part Time, and 5% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution.

Developer - (Bot Developer) Freelance/Remote 100+ openings

Braintrust

San Francisco, CA • On-site, Remote

$30 - $60/hr

Part-time

Posted yesterday

New

Job description

Company
Braintrust is a global talent network that connects top independent professionals with leading companies for high-quality, flexible work. We help organizations hire skilled talent faster while giving professionals access to vetted opportunities with innovative teams. Job description

Open to candidates in the North America, South America, Asia and Europe.
Description

Mindrift (Toloka) is looking for skilled Bot Developers (WhatsApp Business API, Telegram Bot API, Discord API) to build conversational bots and messaging-platform integrations within our hybrid AI + human environment. In this role, as an AI Pilot – that's how we refer to this position at Mindrift – you'll collaborate with Agents that handle repetitive tasks, while you provide bot engineering expertise, conversational design judgment, and quality control to ensure bots are reliable, useful, and ready for real users. This part-time remote opportunity is ideal for professionals with hands-on experience building messaging bots, working with platform APIs and webhooks, and implementing conversational logic. 


What We Do 

The Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.


About the Role 

As a Bot Developer, you'll design, build, and refine messaging bots across WhatsApp, Telegram, Discord, and similar platforms — for use cases such as customer service, appointment booking, order taking, content delivery, moderation, and automated notifications. 


Key Responsibilities

  • Build bots for WhatsApp (Business API / Cloud API), Telegram (Bot API), Discord, and similar messaging platforms.
  • Design and implement conversational flows, dialogue state, and fallback handling.
  • Integrate bots with LLMs (OpenAI, Anthropic, or similar) for natural language responses where appropriate.
  • Connect bots to backend services, databases, CRMs, and third-party APIs (booking systems, payment, content sources).
  • Handle webhooks, rate limits, and platform-specific message formats (interactive messages, buttons, media, templates).
  • Evaluate AI-generated bot code and refactor it for correctness, reliability, and graceful error handling.
  • Implement logging, monitoring, and recovery so bots stay healthy in production.


Requirements and benefits

Educational qualifications

  • At least 3 years of relevant experience backend, integration, automation, or bot development experience (required).
  • Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.

Academic and/or Professional Experience

Candidates should have a strong foundation in bot development, messaging platform integrations, and building reliable conversational workflows. We are looking for specialists who can design and maintain production-ready bots, work confidently with APIs, webhooks, and backend services, and refine AI-assisted output into stable, user-friendly experiences. Strong problem-solving skills, attention to detail, and the ability to work independently are essential.

Technical Skills (Essential)

  • At least 1 year of hands-on experience building bots for major messaging platforms (WhatsApp, Telegram, Discord, Slack, or similar) is required
  • Strong command of Python or Node.js for backend bot logic.
  • Solid experience with REST APIs, webhooks, OAuth, and async request handling.
  • Experience with relational or NoSQL databases for storing conversation state and user data.
  • Familiarity with LLM APIs (OpenAI, Anthropic) and prompt design for conversational use is a strong plus.
  • Understanding of platform-specific limits, message templates, and approval flows (e.g., WhatsApp template messages).
  • Experience with hosting and deployment (Docker, serverless, VPS, or PaaS)

Additional requirements

  • Strong attention to detail and commitment to bot reliability — no silent failures, no broken flows.
  • Self-directed work ethic with the ability to design and ship complete bots independently.
  • Portfolio or examples of bots you've built (required).
  • English proficiency: Upper-intermediate (B2) or above (required).


Project time expectations 

For this project, tasks are estimated to require around 10–20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active. 


Hiring & Onboarding Process

The process is designed to move quickly and typically includes the following steps:

  1. App review and invitation to a virtual project introduction session (approximately 30 minutes)
  2. Platform registration and identity verification
  3. Technical assessment (approximately 35 minutes)
  4. Background check (completed at no cost to candidates)
  5. Onboarding and project-specific training tasks
  6. Begin production work!
Additional Requirements
  • Willingness to complete identity verification as part of the onboarding process.
  • Ability to complete a technical assessment.
  • Willingness to join and participate in Discord, which will be used for project communication and updates.
  • Successful completion of a background check is required prior to onboarding.
  • Reliable internet connection and ability to communicate effectively in a remote environment.

Apply