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JustMarkets

Rust Engineer

JustMarkets Reims, Grand Est, France

Financial Services · 201-500 employees

Sep 09
Remote rust Senior (5-10 yrs) Full-time France
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About the role

You will design the full architecture of the core platform and trading engine while making key technical decisions on the stack and infrastructure. Additionally, you will build the initial production-ready implementation and define engineering standards for the growing team.

What they look for

Rust Systems programming Async Rust Tokio Memory management Concurrency TCP/UDP WebSocket Redis Distributed systems PostgreSQL Quantitative trading Architecture design Infrastructure Agentic coding tools

Requirements

The role requires 3+ years of commercial Rust development experience and 5+ years of systems development experience. Candidates must have deep knowledge of async Rust, systems programming, and a solid understanding of network protocols and distributed systems.

Benefits

20 paid vacation days per year 10 paid sick leave days per year Public holidays Medical insurance Remote work opportunity Professional education budget Language learning budget Wellness budget

Full description

We invite you, a highly motivated and results-oriented Rust Engineer, to join our team full-time for ensuring solutions, as well as strengthening the product.

Our team has unique expertise in research, analysis, and product development. By relying on technical insights and a data-driven approach, we create disruptive future-defining innovations of the fin-tech industry that remain our basis for success

Responsibilities

  • Contribute to design the full architecture of the core platform and its supporting systems
  • Make key technical decisions on the technology stack, infrastructure, and overall system design with minimal oversight
  • Build the initial production-ready implementation
  • Cross-functional collaboration with other teams and across the technology stack
  • Contributing to the development of the product core

Requirements

  • 3+ years of commercial Rust development experience
  • 5+ years of systems development experience
  • Understanding of the trading domain and its underlying processes
  • Deep knowledge of async Rust: tokio/async-std, futures
  • Strong systems programming background: memory management, concurrency, low-level optimization
  • Solid understanding of network protocols: TCP/UDP, WebSocket
  • Experience with in-memory data stores (Redis) or equivalent data stores
  • Familiarity with distributed systems design principles
  • Experience with AI assist agentic coding tools (Claude Code, Codex, etc.)
  • Strong Intermediate level of English

Nice to have

  • Strong data modeling skills and schema design
  • Basic of understanding quantitative trading

We offer

  • 20 paid vacation days per year
  • 10 paid sick leave days per year
  • Public holidays as per the company’s approved Public holiday list
  • Medical insurance
  • Opportunity to work remotely
  • Professional education budget
  • Language learning budget
  • Wellness budget (gym membership, sports gear and related expenses)

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