Senior Software Engineer - Fullstack JS (Platform squad)

Stoïk; United States; Hybrid; USD 77,000 - 133,000; Full time

Benefits offered by this job

Hybrid work

Autonomy over technically demanding to

Job summary

Stoïk is seeking a senior software engineer to build and scale a financial and operational platform used by internal teams and partners. The role focuses on reliability and multi-country support, delivering maintainable software with strong JS/TS expertise.

Based in Paris or surrounding region, you will work in a small, experienced team with two to three office days weekly, contributing to core operational systems and new product regions.

Qualifications

• At least five years of software engineering experience with business logic
• Strong JavaScript skills and professional TypeScript experience
• Ability to lead work independently from problem definition to delivery
• Care for code structure, implementation quality, and end-user value
• Understanding of business goals such as distribution and conversion

Responsibilities

• Develop full stack features for financial workflows and internal tools from design through deployment and support
• Improve reliability and scalability of systems handling products and operational rules across countries
• Keep financial and operational data trustworthy for teams, partners, and insurers
• Collaborate with product, design, data, and business teams to translate needs into maintainable software
• Take ownership of projects and make informed technical and product trade-offs

Skills

JavaScript

TypeScript

Lead independent work

Code quality

Business goals understanding

Job description

Role overview

Build and scale a financial and operational platform used by internal teams and business partners. The work focuses on making complex insurance and cybersecurity operations dependable across European markets, while keeping data accurate and the systems ready for new products and regions.

Responsibilities

• Develop full stack features for financial workflows and internal tools, from design through deployment and support.
• Improve the reliability and scalability of systems that handle products and operational rules across multiple countries.
• Keep financial and operational data trustworthy for teams, partners, and insurers who rely on it.
• Work with product, design, data, and business colleagues to turn operational needs into maintainable software.
• Take ownership of projects and make considered technical and product trade-offs.

Requirements

• At least five years of software engineering experience, including work on applications with substantial business logic.
• Strong JavaScript skills and professional TypeScript experience.
• Ability to lead work independently from problem definition to delivery in a small, experienced team.
• Care for code structure, implementation quality, and the end-user result.
• Understanding of business goals such as distribution and conversion, and an interest in delivering user value.
• Based in Paris or the surrounding region, with availability to work from the office two to three days per week.

Benefits and work setup

The role offers autonomy over technically demanding work and the opportunity to influence core operational systems. The team values sound technical foundations and discussion of design choices. Hybrid work combines home working with two to three office days each week.