Senior Frontend Engineer

React jobs at 15Five



As a Senior Frontend Engineer you play a chief role in building beautiful, clean, and simple applications which embody our Best-Self philosophy. You are a daily participant throughout the product life cycle and have the ability to collaborate with multiple people and teams simultaneously. You have deep technical expertise and are able to confidently guide balanced decision-making when it comes to the development of various features within the product. 

Software development
Team development and mentorship


    • Synthesize multiple solutions to a problem and make logical decisions keeping in mind various tradeoffs and main stakeholders
    • Apply 15Five standards, guidelines, and practices to writing quality code 
    • Lead problem-solving initiatives and escalate problems with a wider scope in a timely manner
    • Work with Design on interactive mock-ups that demonstrate concepts to product owners
    • Participate in code reviews, using each opportunity for training and mentoring the wider Engineering team
    • Build and maintain engineering processes, standards, guidelines, and best practices
    • Adhere to guidelines, making sound decisions on a case-by-case basis and escalating as necessary
    • Develop processes to minimize situations that require decisions outside of established rules
    • Assist and mentor other engineers in their professional development 
    • Participate in the hiring process, evaluate and screen candidates, conduct or lead interviews when required


    • 3+ years of experience with frontend development
    • 2+ years of experience with CSS preprocessors and expertise with mix-ins, variables, functions
    • Experience either working as a designer or very closely with a design team
    • Experience with existing CSS frameworks (e.g., Bootstrap, Foundation, etc.)
    • Experience creating applications that interact with backend web frameworks (e.g., Django, Ruby on Rails, Spring, Laravel, etc.)
    • Highly proficient in technical areas of frontend software development (e.g., React and/or Vue.js, JavaScript, TypeScript, CSS, HTML, etc.)
    • Strong knowledge of JavaScript OOP, DOM, DOM events, AJAX, JSON
    • Skilled with optimizations such as caching, minimal code for fastest loading and rendering
    • Able to collaborate well with a team of designers, product managers, and business stakeholders
    • Understand the cross-functionality of various technical systems
    • Understand the connections and interdependencies between teams and departments
    • Produce exceptional output and work quality
    • Comfortable owning projects
    • Enjoy writing clean and maintainable code accompanied by useful tests
    • Enjoy working in a team but can thrive working independently
    • Desire to always be learning and staying on top of the latest trends and technologies
    • Passionate about being extraordinary in both your work life and personal lifeValue elegant simplicity, beautiful aesthetic, attention to detail, and human-centric design


    • Strong collaborator that prioritizes building trusting relationships with key stakeholders
    • Passionate about being extraordinary in both your work life and personal life
    • Have a strong reputation for accountability and reliability
    • Effectively articulate ideas and strategy
    • Able to easily switch between strategic and tactical thinking
    • Capable of effectively evaluating data to make decisions
    • Willing to express opinions on various designs 
    • Comfortable in a fluid environment with a high tolerance for ambiguity and change
    • Growth-minded and open to coaching and mentorship


    • Comfortably participate in the squad’s software-development process 
    • Understand Engineering procedures, particularly within the squadAble to find answers independently and know whom to ask for help when necessaryUnderstand the knowledge domain within the squad


    • Serve as an expert in one area with historical perspective and a grasp of future direction 
    • Familiar with Engineering standards, guidelines, and best practices and be able to speak to these standards, guidelines, and best practices fluently


    • Resident expert in multiple areas of the application
    • Confidently influence and guide the Engineering team
    • Serve as a mentor to other colleagues


    • Monday: Begin the week with the all-hands Boost to hear company updates and meet new hires, join the squad stand-up, then review pull requests and write code for product features/bugs
    • Tuesday: Determine technical details or implementation with the squad before joining the squad huddle to review top-level initiatives, then research and resolve 2 bugs and write product code
    • Wednesday: Meet with your manager for a 1:1 followed by the company Boost for an in-depth department update, spend the rest of the day on a project from your engineering working group
    • Thursday: Join the bi-weekly Engineering meeting ahead of global happy hour, review pull requests, write code for product features and/or bugs, and write your 15Five check-in
    • Friday: Participate in the Question Friday Boost call, join a planning session for the upcoming spring, write product code, and then finish your week by submitting your 15Five


    • Open to vulnerability, self-reflection, and candid feedback to grow personally and professionally
    • Curious and committed to innovation, continuous learning, and growth 
    • Self-motivated, self-responsible, and self-accountable

15Five is a people and performance platform that instantly upgrades each and every manager. It works by combining employee engagement, continuous performance management, and manager effectiveness software with education, services, and community. At the heart of our approach is Best-Self Management, an evidence-inspired strategy for cultivating world-class managers and transforming organizations by unlocking every employee’s potential. With our holistic solution, CEOs, HR leaders, and managers create highly-engaged, high-performing organizations.  

We work with over 2,000 forward-thinking companies that use our solution to bring out the best in their people, including big brand names like Credit Karma, WP Engine, Adobe, and Fitbit. 15Five is backed by Next 47, Origin Ventures, Point Nine Capital, and Matrix Partners. Its headquarters are based in San Francisco, with offices in New York and Raleigh, NC. The company is working 100% remotely during the COVID-19 pandemic.

We’re excited to continue building out a diverse team that prioritizes inclusivity and celebrates everyone’s unique identity. To support our people 15Five believes in non-gendered Parental Leave, Flexible Time Off, Sick Time Off, Flexible Work arrangements and extensive training and development including but not limited to Diversity, Equity & Inclusion, Best-Self Management, strengths discovery and alignment and Manager specific development opportunities.

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