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Mid Backend Developer Jobs in California (NOW HIRING)

Spark Tek Inc

Servicenow Developer / Lead

San Jose, CA · On-site

$63.25 - $87/hr

Spark Tek Inc is seeking a skilled ServiceNow Backend Developer to design, develop, and implement ... MID Servers, etc. • In-depth understanding of ServiceNow architecture and best practices. • ...

CrowdStrike

Backend Engineer III (Hybrid)

Sunnyvale, CA · Hybrid

  • Medical

  • Retirement

  • PTO

This role is for an experienced mid-level backend microservices developer adept with cloud engineering principles. Your passion and meticulous attention to performance, reliability and scalability ...

NextDeavor Inc.

Mid Level Software Engineer

Irvine, CA · Remote

$100K - $115K/yr

Mid Level Software Engineer Full-time Remote Exclusive confidential search -- details shared with ... Develop backend and frontend functionality using modern engineering practices * Contribute to CI/CD ...

Typesafe AI

Senior Backend/Platform Engineer

San Francisco, CA · On-site

$180K - $280K/yr

  • Medical

  • Retirement

Since mid-2024, we've been engineering the foundation for what comes after the current "state-of-the-art" - a model that actually gets things done. About the role As a senior backend engineer, you ...

Jobs for Humanity

Back End Software Engineers

San Jose, CA · On-site

$185K - $280K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Tiktok Senior Backend Software Engineer, Global E-commerce Governance Platform San Jose Regular R&D ... up with the shortand mid-term technical roadmap of responsible services and drive its ...

Genesis10

Backend AI Engineer - Remote

San Diego, CA · On-site

$43 - $53/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Genesis10 is currently seeking a Backend AI Engineer - Remote for a contract position with a Global ... mid-market organizations across the full spectrum of industry verticals. For contract roles ...

New

ATOMS Careers page

Senior Backend Software Engineer

Los Angeles, CA · On-site

$167K - $230K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Those services have to stay consistent when WiFi drops mid-service. As a backend engineer on this team, you will design and scale the services behind order orchestration, payment flows, offline-first ...

Otter

Senior Backend Software Engineer

Los Angeles, CA

$167K - $230K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Those services have to stay consistent when WiFi drops mid-service. As a backend engineer on this team, you will design and scale the services behind order orchestration, payment flows, offline-first ...

Otter

Senior Backend Software Engineer

Los Angeles, CA · On-site

$167K - $230K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Those services have to stay consistent when WiFi drops mid-service. As a backend engineer on this team, you will design and scale the services behind order orchestration, payment flows, offline-first ...

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Showing results 21-40

All JobsMid Backend Developer JobsMid Backend Developer Jobs in California

Mid Backend Developer information

What is a mid backend developer?

Mid Backend Developers are software engineers with intermediate experience who focus on building, maintaining, and optimizing the server-side components of web or mobile applications. They typically work with databases, APIs, server logic, and integration with front-end systems. Mid-level developers have a solid understanding of programming languages such as Java, Python, Node.js, or Ruby and are expected to contribute to code reviews, troubleshoot issues, and implement new features under minimal supervision. Their role bridges the gap between junior developers, who need more guidance, and senior developers, who handle architecture and high-level decisions.

What are some typical challenges a mid backend developer might face when integrating new technologies into existing systems?

As a Mid Backend Developer, one common challenge is ensuring that new technologies or frameworks integrate smoothly with legacy systems without disrupting current operations. This often involves understanding both the old and new codebases, data migration, and dealing with compatibility issues. Collaborating closely with frontend developers, DevOps, and QA teams is essential to address potential bottlenecks and maintain performance. Additionally, thorough testing and documentation are crucial to ensure long-term stability and maintainability.

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

To excel as a Mid Backend Developer, you need strong programming skills in languages such as Java, Python, or Node.js, along with a solid understanding of databases and API design, typically backed by a bachelor’s degree in computer science or related field. Familiarity with tools and systems like Git, RESTful APIs, Docker, and cloud platforms (e.g., AWS, Azure) is usually required. Problem-solving abilities, effective communication, and teamwork are crucial soft skills that set high performers apart. These competencies ensure efficient development, maintainability, and seamless integration of backend services in dynamic technical environments.

What is the difference between Mid Backend Developer vs Backend Developer?

AspectMid Backend DeveloperBackend Developer
Experience LevelMid-level (2-4 years)Entry to Mid-level (0-3 years)
Skills & CertificationsProficiency in server-side languages, databases, APIs; often familiar with cloud servicesBasic to intermediate backend skills, some familiarity with similar technologies
Work EnvironmentCollaborates on complex projects, often in teams with frontend and DevOpsWorks on foundational backend tasks, may be part of smaller teams or solo projects
Industry UsageCommon in tech companies, startups, and enterprise environmentsWidespread across various industries, including tech, e-commerce, and finance

The Mid Backend Developer typically has more experience and handles more complex backend systems compared to a Backend Developer. While both roles require similar foundational skills, the mid-level position involves greater responsibility, problem-solving, and collaboration on larger projects.

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

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

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

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

What cities in California are hiring for Mid Backend Developer jobs?

Cities in California with the most Mid Backend Developer job openings:

Mid Backend Developer jobs near you
Infographic showing various Mid Backend Developer job openings in California as of August 2026, with employment types broken down into 78% Full Time, 14% Part Time, 2% Temporary, and 6% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution.

Senior Backend Engineer, LangSmith Deployments

LangChain, Inc

San Francisco, CA • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 25 days ago

Job description

About Us
At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale.
With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we're at a stage where we're continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world.
Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater.
About the Team
The Deployment team builds the platform that runs AI agents in production. We design and scale the core durable execution runtime to power reliable long-running agents with resumable streaming and inter-agent protocol support. We work closely with open source and other product teams to make it easy to bring any agent from prototype to production.
About the role
We're building purpose-built infrastructure for running AI agents. Unlike traditional web apps, agents run for long durations, collaborate asynchronously with humans and other agents, and need to survive failures mid-execution. LangSmith Deployments is the runtime that makes this work, with durable checkpointing, fault-tolerant orchestration, and horizontal scaling, deployed across cloud and self-hosted environments.
What You'll Do
We're looking for a Senior Backend Engineer to work on this system. While the focus is on backend development, strong familiarity with Kubernetes (K8s), Terraform (Tf), and other DevOps tooling is highly preferred.
  • Design distributed queue and worker systems that handle concurrent agent execution, background tasks, and multi-agent coordination across horizontally scalable infrastructure
  • Own core data infrastructure - state persistence, atomic job claiming, connection management, and schema evolution
  • Collaborate on architectural decisions, ensuring solutions are scalable and robust.
  • Ship resumable streaming infrastructure so clients can disconnect and reconnect mid-execution without losing state
  • Instrument and monitor production systems - tracing, metrics, and alerting to keep the platform healthy
  • Participate in on-call rotations and own incident response for the runtime
  • Create and maintain technical documentation, including system design and operational runbooks.
  • Contribute to and extend open-source LangGraph, which is used by thousands of developers to build agent applications
What You'll Bring
  • 4+ years of professional backend engineering experience
  • Strong proficiency in Go and/or python
  • Experience with distributed systems - conensus mechanisms, queueing, state machines, and/or workflow orchestration
  • Experience with scaling and sharding databases in high throughput environments
  • Familiarity with Kubernetes, infrastructure-as-code, and at least one major cloud platform
  • Strong communication skills and ability to work cross-functionally on a small team
  • Annual salary range: $175,000-$240,00 USD

Compensation Philosophy:
We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Actual compensation and offerings will vary based on role, level, and location. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.
Benefits
Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.

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