ZipRecruiter

Log In

1

Mid Frontend Developer Jobs in California (NOW HIRING)

Flux

Product Engineer, Front End

San Francisco, CA · On-site

We are open to mid-level through senior candidates. Level, scope, and compensation will align to ... Experience with complex editor interfaces, CAD, developer tools, or design tools. * Familiarity ...

Side

Software Engineer, Frontend

San Francisco, CA

About the Role As a Mid-Level Frontend Software Engineer on the TXM team, you will build and maintain frontend applications that support real estate transactions for our partners. You will partner ...

Side

Software Engineer, Frontend

San Francisco, CA

About the Role As a Mid-Level Frontend Software Engineer on the TXM team, you will build and maintain frontend applications that support real estate transactions for our partners. You will partner ...

Side

Software Engineer, Frontend

San Francisco, CA · On-site

About the Role As a Mid-Level Frontend Software Engineer on the TXM team, you will build and maintain frontend applications that support real estate transactions for our partners. You will partner ...

NextDeavor Inc.

Mid Level Software Engineer

Irvine, CA · On-site

$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 ...

One Step GPS

Be Seen First

Mid-Level Full-Stack Developer

San Fernando, CA · On-site

$80K - $120K/yr

This work spans our full technology stack -- Golang (back-end server), Vue (front-end web), Swift ... add a mid-level Developer to our team. Benefits include a 401K with company matching, a 50 ...

Clera

Product Engineer (Mid-Level)

San Francisco, CA · On-site

$150K - $300K/yr

... mid-level Product Engineer to join a small, high-ownership team in San Francisco. You'll work ... across frontend, backend, and DevOps. * Ability to design and implement end-to-end features ...

Clera

Product Engineer (Mid-Level)

San Francisco, CA · On-site

$150K - $300K/yr

... mid-level Product Engineer to join a small, high-ownership team in San Francisco. You'll work ... across frontend, backend, and DevOps. * Ability to design and implement end-to-end features ...

Tecolote Research

Front End Web Developer

Goleta, CA · On-site

This is a mid-level role that involves working closely with a team of analysts and developers to deliver first-class data-driven website solutions. May sit in our Los Angles or Santa Barbara offices.

next page

Showing results 1-20

All JobsMid Frontend Developer JobsMid Frontend Developer Jobs in California

Mid Frontend Developer information

What is the difference between Mid Frontend Developer vs Junior Frontend Developer?

AspectMid Frontend DeveloperJunior Frontend Developer
Experience2-4 years0-1 year
SkillsProficient in HTML, CSS, JavaScript, frameworks like React or Angular, and basic version controlBasic knowledge of HTML, CSS, JavaScript, and some frameworks
ResponsibilitiesDeveloping features, optimizing performance, collaborating with designers and backend teamsAssisting in coding, fixing bugs, learning project workflows
Work EnvironmentIndependent task handling, code reviews, team collaboration

The Mid Frontend Developer typically has more experience and handles complex tasks independently, while the Junior Frontend Developer focuses on learning, assisting, and gaining foundational skills. The mid-level role requires a deeper understanding of frameworks and project workflows, making it suitable for those with some professional experience in frontend development.

What are Mid Frontend Developers?

Mid Frontend Developers are professionals who specialize in building and maintaining the user-facing parts of web applications, typically with 2-4 years of experience. They are responsible for translating design mockups into interactive websites or apps using technologies like HTML, CSS, and JavaScript frameworks such as React, Angular, or Vue.js. Their role often involves collaborating with designers and backend developers, optimizing applications for speed and responsiveness, and ensuring cross-browser compatibility. Unlike junior developers, mid-level developers are expected to work more independently, solve moderately complex problems, and contribute to code reviews and project planning.

What are some common challenges faced by mid-level frontend developers when working on cross-functional teams?

Mid-level frontend developers often collaborate with backend developers, designers, and product managers, which can sometimes lead to challenges in communication and aligning on project requirements. Balancing the need for delivering visually appealing, responsive interfaces while ensuring performance and accessibility can also be demanding. Additionally, adapting to evolving frameworks or integrating new tools as decided by the team may require continuous learning and flexibility. Successful mid-level frontend developers proactively seek feedback, clarify requirements early, and stay updated on best practices to navigate these challenges.

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

To thrive as a Mid Frontend Developer, you need strong proficiency in HTML, CSS, and JavaScript, along with experience in modern frameworks like React, Angular, or Vue and a relevant degree or equivalent experience. Familiarity with version control systems (such as Git), build tools, and UI design libraries is commonly expected. Strong problem-solving, effective communication, and a collaborative mindset help you stand out in team settings. These skills ensure you can create high-quality, user-friendly interfaces that work well in dynamic, cross-functional development environments.
What are popular job titles related to Mid Frontend Developer jobs in California? For Mid Frontend Developer jobs in California, the most frequently searched job titles are:
What job categories do people searching Mid Frontend Developer jobs in California look for? The top searched job categories for Mid Frontend Developer jobs in California are:
What cities in California are hiring for Mid Frontend Developer jobs? Cities in California with the most Mid Frontend Developer job openings:
Mid Frontend Developer jobs near you
Infographic showing various Mid Frontend Developer job openings in California as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Back-End Software Developer - Mid-level

LMI Consulting, LLC

El Segundo, CA

$101K - $174K/yr

Other

Posted 15 days ago

Job description

Back-End Software Developer - Mid-level
Job Locations US-CO-Colorado Springs | US-CA-El Segundo
Job ID 2026-13659
# of Openings 1
Category Information Technology
Benefit Type Salaried High Fringe/Full-Time
Overview

LMI is actively seeking a dynamic, experienced Mid-level Back-End Software Developer to join LMI's Space Market software development team in Colorado Springs, CO. This role involves working directly with USSF and US Government customers, as well as analytical partners, to drive the development of responsive, high-performance user interfaces within LMI's Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors-helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

Responsibilities
    Develop and maintain server-side logic to power application functionality, handle user requests, and manage data.
  • Design and implement RESTful APIs for internal and external communication.
  • Create and optimize database schemas, write efficient queries, and ensure data integrity and security.
  • Participate in code reviews, debug developed code and stay current with software development trends.
  • Collaborate with front-end developers to integrate back-end functionality with user interfaces.
  • Implement security measures to protect sensitive data and prevent unauthorized access.
  • Contribute to the scalability and performance optimization of back-end systems.
  • Write and maintain technical documentation for back-end systems and APIs.
  • Collaborate with cross-functional teams to review and refine system architecture, interfaces, and data models in an agile environment.
  • Actively collaborate in cross-functional engineering working groups to review, assess, and mature software artifacts such as system architecture, system behavior, system interfaces and requirements, software test plans, UI/UX designs, functional allocation, Interface Control Documents/Descriptions (ICDs), and data models.
Qualifications

Required:

  • Bachelor's degree in Computer Science/Engineering, or equivalent STEM field with 3-8 years of experience (2-7 years with Master's degree) in back-end software development
  • Proficiency in either SQL (e.g., MySQL, PostgreSQL) or NoSQL (e.g., MongoDB) databases.
  • Experience with back-end technologies (Rust, Python, Java) within agile development frameworks
  • Familiarity with back-end frameworks like Django, Flask, Spring, or Express.js.
  • Experience with API development and integration and collaborating with front-end developers.
  • Familiarity with version control systems (e.g., Git).
  • Knowledge of software performance optimization.
  • Familiarity with testing frameworks for back-end applications.
  • Strong problem-solving skills.
  • Excellent communication and teamwork abilities.
  • US Citizenship required, eligible for TS clearance.

Desired:

  • Advanced degree in Computer Science or related field.
  • Knowledge of cybersecurity best practices.
  • Active TS clearance with SCI eligibility or prior experience working on government-related projects
  • Space domain experience and familiarity with space-focused software solutions.

Target salary range: $101,000- $174,000

Disclaimer: The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

#LI-SH1

Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.


LMI is an Equal Opportunity Employer. LMI is committed to the fair treatment of all and to our policy of providing applicants and employees with equal employment opportunities. LMI recruits, hires, trains, and promotes people without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, pregnancy, disability, age, protected veteran status, citizenship status, genetic information, or any other characteristic protected by applicable federal, state, or local law. If you are a person with a disability needing assistance with the application process, please contact accommodations@lmi.org
Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.
Need help finding the right job?
We can recommend jobs specifically for you! Click here to get started.

Apply