Senior Software Engineer - Jetlang Platform - Data & Compute (H/S/T)

PayFit is hiring!


PayFit simplifies payroll management and HR processes for SMBs. PayFit is an automated SaaS solution to help business owners and HR professionals save time and money allowing them to refocus on what really matters: their employees.

Since 2015, we have set ourselves a mission to support the digital transformation of HR management through our ever growing range of product features and services. We have a strong presence in France and have been quickly growing in Germany, Spain, the UK and Italy. With 5,000 customers in 5 countries, we are one of the fastest-growing SaaS companies in Europe.

Today, we are more than 650 employees at PayFit and we all share four core values:

  • Care for each other
  • Always stay humble
  • Strive for excellence
  • Live and work with passion

We are committed to a culture of inclusion and an environment that enables fulfillment in freedom & responsibility.

You want to join us? This video is better than a long description…

*A brief overview of the JetLang Platform Tribe *
The JetLang is a language designed by Payfit and which has sustained Payfit’s growth. This is an abstraction layer designed and maintained by the JetLang Platform Tribe, as some people (known as Product Builders) are modelizing/scripting collective labuor agreements. The JetLang holds an engine being able to compute rules/conditions and whose main feature is to run payroll.Within this tribe, you will work in the JetLang Engine squad who is responsible for designing and implementing this language, its runtime, and toolchains.

Job Description

• You will be in charge of propelling JetLang language toolchains to the next level.
• Envision, design, and implement language features, libraries, and tools to solve specific problems with
broad impacts, such as improving Product Builder experience, enforcing code reliability, and enabling performance optimizations;
• Design and implement powerful algorithms to sustain our scalability;
• Code using primarily Javascript, Typescript, OCaml;
• Conduct unit, multi-unit, and product testing as needed to evaluate system correctness;
• Conduct design and code reviews;
• Analyze and improve efficiency, scalability, and stability of JetLang and tools;
• Interface with other teams to incorporate our innovations and vice versa;

Preferred Experience

We are meant to work together if... 👪

• You are ready to take part in our growth, stability, and scalability challenges;
• You are "problem-solving" oriented;
• You like collaborative working;
• You like taking initiatives;
• You are receptive to feedback, to be mentored and mentor. We're caring and make sure that everyone can grow. You will be empowered. You will empower others;
• You speak English fluently and you want to work in an international and dynamic environment;

What we offer ❤️

• An amazing working environment;
• An attractive remuneration package;
• An international and dynamic team with the opportunity to visit our different offices (Paris, Berlin, Barcelona, London, and Milan);
• An incredible Remote working policy (Work from Anywhere);
• A gym inside the office and Gymlib subscription with a preferential rate;
• Regular team and global events;
• Lunch vouchers;
• Henner insurance (60% covered by PayFit);
• Great coffee, fruits, snacks, foosball, MPG Teams, or even team yoga classes;
• MacBooks are our standard, but we'll provide whatever equipment you need to help you get your job done!
• Sweevana/Swile: many, many more employee advantages you'll discover;

Recruitment Process

1️⃣ Applicant initial validation: added value, key achievements, motivations, job match
2️⃣ Phone interviews with a Tech Recruiter and an Engineering Manager
3️⃣ Tech meeting with: Team Members, Product Manager, and VP Engineering.

Want to know more about our epic team? Watch this video 👀

We are looking for passionate and innovative people who want to build the next big success story with us! Do you recognize yourself in these words? Do you want to join an incredible adventure? Tell us who you are, what you’ve done, and what you're looking to achieve. We’ll be more than happy to meet you :)

Additional Information

  • Contract Type: Full-Time
  • Location: Paris, France (75008)
  • Experience: > 7 years
  • Possible full remote