Front-End Web Designer/Developer

Engineering · Denver, Colorado
Department Engineering
Employment Type Full-Time
Minimum Experience Mid-level

You are passionate about UX design and web technologies and eager to join a team of software development experts.  Your curiosity drives you as a lifelong learner and is matched only by your desire to invent eyebrow-raising digital products. You are ready to use your mad skills as a force for good in the world and join a culture of candor and accountability coupled with the freedom to let your creativity bloom.  You have arrived. 

303 Software is seeking a Front-End Web Designer/Developer skilled in combining the art of design with the art of programming. This role will include both designing and implementing layouts, features, and interfaces for both mobile and web applications.  Types of projects span from greenfield startup products to consumer-facing websites and enterprise applications.  Team collaboration and user-centric problem solving is pivotal to success in this role.


  • Plan and implement new UI designs
  • Plan and implement user experiences
  • Create wireframes and high fidelity mockups/prototypes
  • Prototype and implement features using modern front-end technologies
  • Deploy and ship well-tested code
  • Collaborate with team members, clients, and other stakeholders

Skills We Are Looking For

  • 3+ years of graphic design tools such as Photoshop or Illustrator
  • Experience creating high fidelity mockups/prototypes with tools (InVision, Balsamiq, Sketch, etc)
  • Solid understanding of user-centered design and interaction design principles
  • Deep knowledge of JavaScript, HTML, CSS, and related web technologies
  • Experience with modern JavaScript features
  • Experience creating single-page applications using a JavaScript framework such as React, Angular, Vue, etc.
  • Experience with using tools like SASS, LESS, or Stylus
  • Experience utilizing source control versioning tools
  • Familiarity with SEO principles and best practices
  • Ability to build mobile responsive websites
  • Creative problem solver.
  • Willing to do whatever it takes to achieve reasonable customer objectives.
  • A passion for continuous improvement.
  • Ability to effectively manage stressful situations.
  • Experience with an agency environment

Nice to Have

  • Knowledge of functional programming paradigms
  • Open-source software contributions
  • Some knowledge of backend web frameworks such as Express or Laravel



Founded in 2006 in Denver, Colorado by Stefan Ramsbott and Matt Jaffe, 303 Software consults and builds digital products for businesses, governments, and startups. We employ only experienced technologists who provide full project lifecycle expertise, from consulting to implementation to post-launch support. We believe that executing the right combination of strategy, planning, and technology allows us to consistently deliver success to our clients.


With a spacious headquarters in the heart of the Golden Triangle district of Denver, Colorado, our office is an ideal location for successful, collaborative work. Morning stand-ups, code reviews, project retrospectives, and quarterly state of company meetings level up our daily interactions.


303 Software is an EOS company. Our six core values define us and we hire, fire, reward, and recognize our people based on them:


  1. We Take Ownership
  2. We Deliver Success
  3. We Solve Problems Together
  4. We Improve Continuously
  5. We Exhibit Grace Under Pressure
  6. We Love Colorado




303 Software is proud to be an Equal Opportunity Employer.  We value diversity and maintain a drug-free workplace. Any offer of employment is contingent upon results of a pre-employment background check.




The above job definition information has been designed to indicate the general nature and level of work performed by employees within this classification.  It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of employees assigned to this job.  Job duties and responsibilities are subject to change based on changing business needs and conditions.

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  • Location
    Denver, Colorado
  • Department
  • Employment Type
  • Minimum Experience