Senior Front-End Developer, Creative and Marketing (contract)

Join to apply for the Senior UI Developer (contract) role at LEVEL

Company Description

For 25 years, Level has developed marketing solutions for some of the world’s most innovative brands. We believe the best solutions come from collaborative working partnerships with our clients. Whether an established brand, or a start-up, we believe in the power of creative strategy, design, and technology to solve business challenges.

Overview

Level Studios is seeking a freelance Sr. Front-End Developer to support the creation, enhancement, and updating of innovative and unique product/marketing pages and web applications for our consumer electronics client.

Are you a passionate front-end developer with exceptional HTML, CSS, and JavaScript skills? Do you have experience working directly with cross‑functional teams, clients, and stakeholders to deliver, defend, and iterate on the solutions you build? Do you want to collaborate with a world‑class team to create and deliver high‑quality, pixel‑perfect interactive digital experiences seen by millions? If so, let’s talk about the exciting opportunities at Level Studios as we tackle increasingly complex digital client engagements!

The primary technical toolkit for this role will be HTML, CSS, Javascript, Handlebars, SASS, and GIT; experience with the Greensock animation library is preferred. Other modern development tools such as Three.JS, React, and Node may also be leveraged.

Please Note

• This is a 40hr/week freelance role expected to start in mid‑June and run for a period of 3‑4 months. Conversion into a full‑time role following the completion of the freelance period is possible but not anticipated.
• This role is based out of our San Francisco office and candidates should expect to work Pacific Time hours.
• The majority of the work can be completed remotely but some occasional onsite collaboration may be required. Therefore, candidates local to the Bay Area (including San Jose, Santa Clara, Sunnyvale, and similar surrounding locations) will be prioritized but highly qualified candidates in other markets may also be considered.
• We are not able to support any form of current or future visa sponsorship needs for this role. No 3rd party‑staffing agencies, please.

Responsibilities

• Develop and maintain custom frameworks and design systems that power some of the world’s most visible website experiences.
• Build custom tools to support development processes.
• Contribute to existing SASS and JavaScript libraries used at scale.
• Maintain and expand documentation for custom frameworks.
• Collaborate and ideate on new features for existing systems.
• Work with the creative team to enhance application design across multiple platforms.
• Build detailed and performant JavaScript interactions using vanilla JavaScript.
• Work closely and collaboratively with team members across multiple disciplines.
• Develop and deliver high‑quality code to create new features and resolve bugs in clients’ custom frameworks, including both the Core library and the Editor GUI.
• Review requirements with the client’s framework DRI, partners, and clients as needed to ensure proper understanding and execution.
• Partner with the QE team to ensure high‑quality test plans and proper coverage of framework features.
• Create a device/performance catalog for real‑time WebGL experiences based on parameters defined by the team.
• Revise onboarding documentation, with a focus on framework developers.
• Partner with various teams and stakeholders to share information, manage project status, and drive success for potential and existing collaborative business opportunities both within the pillar and across Publicis Groupe.

Qualifications

• There is no specific educational requirement for this role
• 5-7 years of prior front‑end development experience is required; prior experience working alongside a marketing or creative team in a consultancy, advertising agency, or large, complex corporate environment is strongly preferred.
• Deep experience working on .com projects including innovative and unique product/marketing pages and web applications.
• Expert‑level proficiency in writing custom vanilla JavaScript from scratch without the need for libraries and experience modifying or extending existing JavaScript modules and manipulating DOM elements.
• Very strong experience developing in front‑end languages including HTML, CSS, Javascript, Handlebars, SASS, GIT, WebGL, ThreeJS, and React; experience with the Greensock animation library strongly preferred.
• Experience with other modern frontend development tools with NodeJS such as Gulp, Yarn, and/or Webpack would be ideal.
• Familiarity with Adobe Creative Suite, particularly Photoshop.
• Prior experience working in a client‑facing capacity including presenting, explaining, iterating, and defending work in various stages of completion.
• Knowledge of best practices in building fluid/responsive layouts.
• Experience using Chrome or Safari Dev Tools for inspecting and debugging client‑side code.
• Strong knowledge of browser compatibility, including mobile web browsers, and their rendering engines.
• Experience with localization and right to left languages is a plus.
• Familiarity with Mac OS X including working in the UNIX terminal.
• Very strong interpersonal, written, and verbal communication skills.
• Self‑directed and independent with outstanding organizational and time management skills as well as a meticulous attention to detail.
• Ability to manage multiple concurrent projects in a fast‑paced, deadline‑driven, continuously‑evolving environment.
• Code samples may be required as a part of the hiring process.

Additional Information

Level Studios is an Equal Opportunity Employer. Our employment decisions are made without regard to actual or perceived race, color, ethnicity, religion, creed, sex, sexual orientation, gender, gender identity, gender expression, pregnancy, childbirth and related medical conditions, national origin, ancestry, citizenship status, age, disability, medical condition as defined by applicable state law, genetic information, marital status, military service and veteran status, or any other characteristic protected by applicable federal, state or local laws and ordinances.

If you require accommodation or assistance with the application or onboarding process specifically, please contact View email address on click.appcast.io.

All of your information will be kept confidential according to EEO guidelines.

Compensation Range: $55-$74 per hour. This is the pay range the Company believes it will pay for this position at the time of this posting. Consistent with applicable law, compensation will be determined based on the skills, qualifications, and experience of the applicant along with the requirements of the position, and the Company reserves the right to modify this pay range at any time. Temporary roles may be eligible to participate in our freelancer/temporary employee medical plan through a third‑party benefits administration system once certain criteria have been met. Temporary roles may also qualify for participation in our 401(k) plan after eligibility criteria have been met. For regular roles, the Company will offer medical coverage, dental, vision, disability, 401k, and paid time off. The Company anticipates the application deadline for this job posting will be January 5, 2026.

Seniority level

Not Applicable

Employment type

Temporary

Job function

Engineering and Information Technology

Industry

Advertising Services