Senior Full-Stack Engineer - AI Payroll SaaS (Remote)

Combo; Paris; Hybrid; EUR 60,000 - 70,000; Full time

Benefits offered by this job

Health insurance (Benefiz)

Swile card

BSPCE stock options

50% commute costs covered

Flexible remote policy

Job summary

Combo is hiring a Senior Full-stack Software Engineer to join the Payroll squad. You will work on HR SaaS features for payroll, tax, and social declarations, while integrating AI-powered tooling to accelerate delivery.

The role involves building a scalable payroll engine, crafting intuitive UIs, and collaborating with product, design, and QA in a dynamic, international team. Location: Paris area preferred; package €60–70k; flexible remote policy and equity options.

Qualifications

• Strong full-stack background on Node.js and React.
• Experience with large React code bases and efficient UI.
• Hands-on mastery of AI tools for software development and integration into workflow.
• Solid software engineering and CS background.
• Knowledge of system design and DB modeling.

Responsibilities

• Build an HR SaaS that is genuinely useful and meaningful for its users, with real social impact.
• Implement new features related to payroll calculation, tax deduction and social declarations.
• Build a performant and reliable payroll engine.
• Design intuitive, accessible and performant user interfaces for complex payroll processes.
• Work with hairy business rules and fascinating user needs.
• Leverage AI tools in daily work to ship faster and with higher quality.
• Contribute to engineering culture and promote it.
• Collaborate with engineers, product managers, designers, QA and support in a friendly, international environment.

Skills

Node.js

React

Front-end UX

AI dev tools

Software engineering

System design

Database modeling

6–7 years experience

SaaS / B2B

Remote teams

Tools

Claude Code

Cursor

GitHub Copilot

Job description

Combo is hiring a Senior Full-stack Software Engineer to join the Payroll squad. You will work on HR SaaS features for payroll, tax, and social declarations, while integrating AI-powered tooling to accelerate delivery.

The role involves building a scalable payroll engine, crafting intuitive UIs, and collaborating with product, design, and QA in a dynamic, international team. Location: Paris area preferred; package €60–70k; flexible remote policy and equity options.