Fullstack Engineer

Posted Yesterday
Be an Early Applicant
New York, NY, USA
Hybrid
80K-110K Annually
Junior
AdTech • Marketing Tech
The Role
Develop and maintain React-based front-end applications using TypeScript, JavaScript, HTML, and CSS. Build reusable responsive components, integrate REST APIs, work with JSON data, debug applications, participate in code reviews, and collaborate with cross-functional teams in an Agile environment. The role also involves Git-based version control, testing, documentation, and continuous technical development.
Summary Generated by Built In

Job Description

Who We Are

Horizon Media, founded in 1989 by Bill Koenigsberg, is recognized as one of the most innovative marketing and advertising firms. We are headquartered in New York City, with offices in Los Angeles and Toronto. A leader in driving business solutions for marketers, Horizon is known for its highly personal approach to client service.  Renowned for its incredible culture, Horizon is consistently named to all the prestigious annual Best Places to Work lists published by Fortune, AdAge, Crain’s New York Business and Los Angeles Business Journal. Together we are building a place of belonging. 
 
At Horizon, we understand the value that different perspectives can bring to our clients and culture, so we strive for an environment where our employees feel welcomed, safe and empowered. We value YOU and believe that your authentic voice and unique perspective allows us to create a more rewarding culture, and experience, together. 

 
Our simple recipe for success? We hire talented people (thinkers, doers, dreamers, makers), challenge them and give them every opportunity to grow. 

Job Summary

As a Junior Frontend Software Engineer, you will be responsible for developing and maintaining modern React-based user interfaces while collaborating with senior engineers to build scalable web applications.

Job Duties

(50%) Front-End Application Development

  • Develop and maintain modern front-end applications using React.js and TypeScript
  • Build reusable, responsive user interface components using HTML5 and CSS3
  • Consume REST APIs using Axios or Fetch and display API data within the application
  • Work with JSON data structures and integrate backend services into the UI
  • Collaborate with senior engineers to implement new features and enhancements

(25%) Application Integration & Collaboration

  • Implement front-end functionality using asynchronous programming patterns including Promises and async/await
  • Debug application issues using browser developer tools
  • Participate in code reviews and incorporate feedback from senior engineers
  • Collaborating with cross-functional teams in an Agile development environment
  • Learn and contribute to modern front-end development practices

(25%) Engineering Excellence

  • Write clean, maintainable, and well-documented code
  • Use Git for source control, including branching, merging, pull requests, and collaboration
  • Follow established coding standards and engineering best practices
  • Participate in testing, debugging, and issue resolution
  • Continuously developing technical skills and contributing to team knowledge sharing

Job Requirements

  • Bachelor's degree in Computer Science or related field
  • 1-3 Years professional experience developing front end applications.
  • Strong understanding of React.js, JavaScript (ES6+), HTML5, CSS3.
  • Experience with Typescript
  • Experience consuming REST API’s using Axios or Fetch
  • Comfortable working with JSON data and API responses.
  • Understanding of asynchronous programming, such as promises, async/await
  • Familiarity with common data structures including Arrays, objects, maps, sets
  • Experience with common Git commands such as push, pull, merge, fork, clone
  • Basic debugging skills using browser developer tools.

Preferred Qualifications

  • Experience with Next.js
  • Experience with Tailwind
  • Experience with Claude Code/Codex
  • Understanding of micro frontend architecture
  • Understanding of module federation
  • Experience with AWS Amplify/ Cubernetes/Docker
  • Experience working in an Agile environment
  • Understanding of responsive design

Technologies

Primary

  • React.js
  • Typescript
  • JavaScript ES6+
  • HTML5
  • CSS3
  • REST APIs
  • AWS/GCP
  • Git

Nice to Have

  • Next.js
  • Tailwind
  • Python
  • Experience working with the business users or stakeholders to build and test UI components
  • Experience with integrating Data lakes and platforms such as Databricks /Snowflake/ Redshift/BigQuery

#LI-KG1

#LI-HYBRID

#HM

Horizon Media is proud to be an equal opportunity workplace.  We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements.

Salary Range

$80,000.00 - $110,000.00

A successful applicant’s actual base salary may vary based on factors such as individual’s skill sets, experience, training, education,  licensure/certifications, and qualifications for the role.  As an organization, we take an aptitude and competency-based hiring approach.  We provide a competitive total rewards package including a discretionary bonus and a variety of benefits including health insurance coverage, life and disability insurance, retirement savings plans, company paid holidays and unlimited paid time off (PTO), mental health and wellness resources, pet insurance, childcare resources, identity theft insurance, fertility assistance programs, and fitness reimbursement.

Skills Required

  • Bachelor's degree in Computer Science or a related field
  • 1-3 years of professional experience developing front-end applications
  • Strong understanding of React.js, JavaScript ES6+, HTML5, and CSS3
  • Experience with TypeScript
  • Experience consuming REST APIs using Axios or Fetch
  • Comfort working with JSON data and API responses
  • Understanding of asynchronous programming, including Promises and async/await
  • Familiarity with arrays, objects, maps, and sets
  • Experience with Git commands including push, pull, merge, fork, and clone
  • Basic debugging skills using browser developer tools
  • Experience with Next.js
  • Experience with Tailwind
  • Experience with Claude Code or Codex
  • Understanding of microfrontend architecture and module federation
  • Experience with AWS Amplify, Kubernetes, or Docker
  • Experience working in an Agile environment
  • Understanding of responsive design
  • Experience with Python
  • Experience integrating data lakes or platforms such as Databricks, Snowflake, Redshift, or BigQuery
  • Experience working with business users or stakeholders to build and test UI components

Horizon Media Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Horizon Media and has not been reviewed or approved by Horizon Media.

  • Healthcare Strength Healthcare Strength: Health coverage spans medical, dental, vision, mental‑health resources/EAP, and HSA/FSA, alongside life and disability insurance. Add‑ons such as fertility assistance, pet insurance, identity‑theft protection, and fitness reimbursement expand the package.
  • Leave & Time Off Breadth Leave & Time Off Breadth: Company‑paid holidays and “unlimited” PTO are widely highlighted. Hybrid/remote flexibility features across roles and locations.
  • Parental & Family Support Parental & Family Support: Parental leave is described as generous, with childcare resources and family medical leave available. Family‑supportive benefits are presented as part of the standard offering.

Horizon Media Insights

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The Company
HQ: New York, NY
2,965 Employees
Year Founded: 1989

What We Do

Horizon Media is a leader in driving business-based outcomes for marketers. The company was founded in 1989, is headquartered in New York, and has offices in Los Angeles and Toronto. With estimated billings of $8.7 billion and over 2,300 employees, Horizon is the third largest U.S. media agency according to COMvergence data. Recognized as one of the world’s ten most innovative marketing and advertising companies by Fast Company, Horizon Media has been named Media Agency of the Year by MediaPost, Adweek and AdAge and is known for its highly personal approach to client service. Renowned for its culture, Horizon is also consistently named to all the prestigious annual Best Places to Work lists published by Fortune, Forbes, AdAge, Crain’s New York Business and Los Angeles Business Journal; including “Best Workplaces for Diversity,” “Best Workplaces for Women,” and “Best Workplaces for Millennials” honors. Bill Koenigsberg, President, CEO and Founder of Horizon Media, has earned almost every industry accolade and, in 2019, garnered the marketing’s highest honor when he was inducted into the American Advertising Federation (AAF) Hall of Fame. TOGETHER WE'RE BUILDING A PLACE OF BELONGING At Horizon, diversity, equity and inclusion are pillars of our culture. Numerous studies show that a more diverse workplace benefits everyone in so many ways; employees, organizations and their clients. When people feel that they belong and are included, they become committed and feel empowered to be more innovative. And that is the workforce we strive to have. We welcome everyone and do not discriminate based on gender, race, religion, sexual orientation, age or disability. We want you to feel welcomed, safe and know that you’re a vital member of our community. For more information, visit: www.horizonmedia.com or www.horizonmedia.com/careers.

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