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Senior Fullstack Javascript Developer

What is a Senior Fullstack JavaScript Developer? A Comprehensive Guide to Roles and Specializations

G2i is a hiring community connecting remote developers with world-class engineering teams.
G2i is a hiring community connecting remote developers with world-class engineering teams.

A Senior Fullstack JavaScript Developer is an experienced software engineer who specializes in building web applications using JavaScript for both frontend (client-side) and backend (server-side) development.

They are proficient in modern frameworks, libraries, and tools that enable them to create dynamic, scalable, and high-performance applications.

As leaders in their field, they often mentor junior developers, architect complex systems, and ensure the seamless integration of frontend and backend components.

Core Responsibilities of a Senior Fullstack JavaScript Developer

  1. End-to-End Development: Design, develop, and maintain web applications using JavaScript for both frontend and backend.
  2. Code Optimization: Write clean, efficient, and maintainable code while adhering to best practices and coding standards.
  3. System Architecture: Architect scalable and secure web solutions, ensuring optimal performance and reliability.
  4. Frontend Development: Build responsive and interactive user interfaces using modern JavaScript frameworks like React, Angular, or Vue.js.
  5. Backend Development: Develop server-side logic, APIs, and databases using Node.js, Express.js, or other backend technologies.
  6. Collaboration: Work closely with designers, product managers, and QA teams to deliver high-quality products.
  7. Mentorship: Provide guidance and training to junior developers, fostering a culture of continuous learning.

Key Skills for Senior Fullstack JavaScript Developers

To succeed as a Senior Fullstack JavaScript Developer, mastering the following skills is essential:

  • JavaScript Mastery: Deep understanding of JavaScript (ES6+), including asynchronous programming, closures, and prototypes.
  • Frontend Frameworks: Proficiency in frameworks like React, Angular, or Vue.js for building dynamic user interfaces.
  • Backend Frameworks: Expertise in Node.js and Express.js for server-side development.
  • Database Management: Knowledge of relational (MySQL, PostgreSQL) and NoSQL (MongoDB, Redis) databases.
  • API Development: Ability to design and integrate RESTful APIs or GraphQL endpoints.
  • Version Control: Strong command of Git for collaborative coding and version management.
  • Testing and Debugging: Experience with testing frameworks like Jest, Mocha, or Cypress.
  • Cloud Platforms: Familiarity with AWS, Azure, or Google Cloud for deploying and scaling applications.

About Us:

We are passionate about helping great ideas succeed.

Too often, promising ventures fail due to avoidable obstacles—we exist to change that.

While we work as consultants, we see ourselves as partners, collaborating closely with our clients to achieve success together.

With a growing team of 40+ professionals, we believe in shared risks and rewards.

Partnering with entrepreneurs and corporations, we invest in projects alongside our colleagues, ensuring alignment and commitment to long-term success.

About the Role:

As a Fullstack JavaScript Developer, you'll experience a dynamic mix of responsibilities, from hands-on coding to advising clients and running workshops with startups.

You’ll work closely with companies in our portfolio as well as external clients, giving you exposure to a variety of industries and challenges.

We ensure a balanced mix of projects to broaden your expertise, leveraging modern JavaScript technologies while collaborating with UX/UI designers, product owners, and data analysts.

Your input will play a crucial role in shaping both technical solutions and product strategies.

Must-Have Requirements:

  • At least 6 years of experience building web applications with JavaScript (both frontend and backend).
  • Proficiency in React (or another popular frontend framework such as Vue).
  • Experience with Express.js (or another backend framework like Nest).
  • Ability to write clean, high-quality code.
  • Fluent in English & Swedish.
  • Pragmatic, self-driven, and strong interpersonal skills.

Nice-to-Have Requirements:

  • Hands-on experience in startups.
  • Previous consulting experience.
  • Knowledge of TypeScript.

What We Offer:

🚀 Cutting-Edge Technologies & Best Practices
Gain firsthand experience in building successful companies, leveraging the latest frameworks and a structured, best-practice methodology.

📈 Growth & Career Development
We embrace a flat structure where every team member has a say. From day one, you’ll have real responsibilities, senior mentorship, and a personalized career plan tailored to your goals.

🎉 A Fun & Balanced Work Environment
We believe work should be enjoyable! Our flexible hybrid setup ensures a healthy work-life balance. We host bi-weekly team lunches and breakfasts (on the house!), regular after-work gatherings, and two company-wide conferences each year.

If this sounds like the kind of environment where you’d thrive, we’d love to hear from you!

To apply for this job please visit:

jobs.ashbyhq.com
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