Lynx Capital Partners

About Us

We're a US fintech company developing low-latency trading systems for high-frequency trading in the US stock market. We train AI models and build agent-based systems for trading operations.

What You'll Do

• Build and maintain trading platform interfaces (mostly frontend, some backend)
• Work with real-time data and low-latency systems
• Design intuitive UX/UI for complex trading workflows
• Work autonomously with minimal micromanagement

• Collaborate directly with the team lead

   

Must-Haves

• 4+ years of professional development experience
• Strong TypeScript skills
• MongoDB production experience

• Solid UX/UI understanding (not just implementing designs - thinking about user flows)

   

Nice-to-Haves

• AWS experience
• Real-time/low-latency systems background
• Financial systems exposure
• AI/ML familiarity

Hi! We're launching a dedicated AI division creating both internal tooling and customer-facing AI products. With startup energy backed by our established 20+ year tech company, we're building everything from developer infrastructure to productivity solutions.

Our team collaborates with leading AI researchers, operating from our New York and Krakow hubs with a horizontal structure that gives you direct impact.

• What You'll Do
  • Build comprehensive AI tools for both internal teams and external customers
  • Develop robust backend systems that power and extend LLM capabilities
  • Create APIs, frameworks, and infrastructure that make AI more accessible and effective

  • Design solutions that solve real-world challenges for AI practitioners

     

• What We Need
  • Enthusiasm for AI tool creation and infrastructure
  • Backend development experience in any language
  • Hands-on experience with LLMs (Claudes, OpenAI models, etc.)
  • Problem-solving mindset and eagerness to learn

  • 2+ years professional software development

     

• Nice to Have (We'll Teach)
  • Experience building developer tools or frameworks
  • Knowledge of multiagent systems architecture
  • Background in Java or other languages
  • Exposure to high-performance systems

Hi! We're launching a dedicated AI division creating both internal tooling and customer-facing AI products. With startup energy backed by our established 20+ year tech company, we're building everything from developer infrastructure to productivity solutions.

Our team collaborates with leading AI researchers, operating from our New York  and Krakow hubs with a horizontal structure that gives you direct impact.

What You'll Do

• Design and implement comprehensive test strategies for AI-powered tools and systems
• Create test frameworks to verify accuracy, reliability, and performance of LLM integrations
• Develop automation tools to test APIs, frameworks, and infrastructure components
• Collaborate with developers to ensure quality across the entire AI product lifecycle

• Help establish QA standards and best practices for emerging AI technologies

   

What We Need

• Enthusiasm for AI quality assurance and testing methodologies
• Experience testing backend systems and APIs
• Hands-on experience with testing tools and automation frameworks
• Familiarity with LLMs (Claudes, OpenAI models, etc.) and their behavior
• Problem-solving mindset and eagerness to learn
• 2+ years professional QA/testing experience

Nice to Have (We'll Teach)

• Experience testing AI systems or ML models
• Knowledge of testing multiagent systems
• Expertise in creating test automation frameworks
• Background in testing Java-based applications
• Exposure to performance and load testing