Senior Fullstack Software Engineer (NodeJS)

We’re looking for an experienced and proactive Senior Fullstack Software Engineer to take ownership of developing and maintaining Visual Studio Code extensions for our proprietary programming language used in high-frequency trading (HFT) algorithm development.

Your job will be to create a seamless development experience for our quant and trading teams, integrating editor tools with internal build and test infrastructure. Future work may include real-time market data analysis tooling, strategy diagnostics, and custom visualizations. You’ll be working at the intersection of performance, finance, and developer experience.

Responsibilities :

Design, develop, and maintain VS Code extensions for an internal programming language

Integrate the language tooling with internal build / test systems

Potentially develop tools for real-time data analysis , strategy diagnostics , and visualization

Collaborate with quant researchers, traders, and infrastructure engineers

Solve complex engineering problems in a high-performance environment

Requirements :

5+ years of professional experience in software engineering (full stack / frontend / backend)

Strong knowledge of TypeScript and Node.js

Ability to write clean, maintainable, and efficient code

Bonus points for experience with :

Visual Studio Code Extension API

Language Server Protocol (LSP)

Solid understanding of JavaScript fundamentals, including :

Prototypal inheritance

Event loop, call stack, and task queue

Promises vs callbacks

Bonus : experience with algorithmic trading or HFT systems

Independent, structured, and delivery-oriented mindset

The offer :

• Attractive salary
• Bonuses – 2 times a year, based on the financial result of the company and the performance of a given person. Depending on the level in the classification system and seniority, bonuses can range from 35%-75% of the annual salary. They are not guaranteed, but in the company’s 15-year history, there have only been 2 half-years without bonuses
• Ok System and LuxMed – both packages offered by the company for both employees and consultants on b2b contracts
• Paid break in the provision of services – for consultants, 20 days of break in a year, fully paid.