Senior Fullstack Engineer

Job summary
Permanent contract
Paris
Salary: Not specified
Occasional remote
Experience: > 7 years
Education: BAC+3
Skills & expertise
Generated content
Agile methodologies
Mentoring
Shopify
Git
Serverless
+9

JUST
JUST

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Questions and answers about the job

The position

Job description

What is the focus of the role?

  • Lead the development of scalable, high-performance web applications for a seamless e-commerce checkout experience.

  • Work across both frontend and backend, ensuring high-quality code and system reliability.

  • Collaborate with cross-functional teams to design and implement new features aligned with business goals.

  • Mentor junior engineers, fostering their growth and improving overall team performance.

  • Incorporate innovative technologies and best practices to continuously enhance our platform.


Preferred experience

How About You and Your Approach to the Role?

  • You have a Bachelor’s degree in Computer Science, Software Engineering, or a related field (bonus if you have an advanced degree or certifications in full stack development).

  • You bring 5+ years of experience as a full stack engineer, ideally within e-commerce or fintech environments (e.g., Shopify, Stripe, PayPal).

  • You possess expert-level knowledge in modern web development, with strong skills in JavaScript/TypeScript, HTML5, CSS3, and browser APIs.

  • You are highly proficient with modern frameworks like React, Angular, or Vue.js, and back-end frameworks like Express or Django (experience with serverless architecture is a big plus!).

  • You have a deep understanding of CI/CD processes, version control (e.g., Git), and agile development methodologies.

  • You enjoy leading cross-functional collaboration, working closely with product, design, and other engineering teams to deliver high-quality solutions.

  • You’re familiar with cloud services like AWS, GCP … containerization (Docker), and understand microservices architecture.

  • You’re comfortable mentoring junior engineers and leading initiatives to improve team efficiency and product development processes.


Recruitment process

What’s the process like:

  • The Screening Interview: 30-minute video call usually with our Chief of Staff to better understand where you at right now, how you project yourself in the future, and how it all relates to JUST’s path. ****It’s also during this first step that we talk about your salary expectations.

  • The Who interview: A 45 minutes to 1 hour interview with members of the team related to he job you’d be applying for, to learn more about you as a person, your motivations, and your past experiences. Our goal is to understand who is applying to JUST.

  • The Focused interview : Our Focused Interview is your chance to showcase how well your skills, experience, and values align with the role. This interview takes a deeper dive into the specific outcomes and competencies we’re looking for, going beyond a traditional job description. You’ll meet with team members who want to understand (i) your technical and (ii) behavioral skills, as well as (iii) how you align with our company culture. It’s designed to ensure that both you and the position are the perfect fit for one another. Think of it as the final step in making sure this opportunity is the right one for you, and a chance to highlight what makes you the best choice.

  • Founder call: 30-minute discussion with one of JUST’s founders around vision, mission, and culture.

  • Reference calls: Once we reach the founder call, we’ll get back to you asking for a couple of contacts to serve as references for JUST.

We’ll get back to you as quick as we can after each steps. Our process usually last over 2 Weeks.

💌 How long until you get back to me?

Once we receive your application, we’ll review it and get back to you within 5 working days.

After your initial call with our Talent Manager and at each step of the interview process, you’ll receive feedback via email within 1 working days.

If you don’t hear from us in time, feel free to nudge us with an email (we all miss a deadline now and then 😉)!

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