Senior Fullstack Engineer

Location: Remote - Europe preferred, must be able to work European hours

Remote | Full-time

Compensation: $120K - $150K

Our client is a dynamic, forward-thinking, fully remote organization with an ambitious roadmap and a strong commitment to engineering excellence.

Seeking a Senior Fullstack Engineer to work at the intersection of frontend and backend development. In this role, the engineer will build and maintain both a React-based trading user interface and the TypeScript backend services that power high-performance trading platforms. The position involves full feature ownership—from crafting responsive, real-time interfaces to designing the APIs, data pipelines, and indexing solutions that feed them.

The ideal candidate possesses a strong passion for trading, engineering rigor, security, and velocity, backed by over six years of professional experience and a dedication to code quality and state-of-the-art software testing practices.

Key Responsibilities

Frontend Development & Performance

• Build and maintain the React-based trading user interface.
• Implement dynamic, interactive interfaces for real-time data, including live order book updates, price feeds, and trade executions via WebSockets.
• Own component architecture, state management, and responsive design.
• Optimize rendering, minimize load times, and ensure smooth, low-latency interactions under heavy data loads.
• Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces.

Backend Development & Data Infrastructure

• Design and maintain TypeScript services, including REST APIs, WebSocket servers, and background services.
• Design and deliver event-driven pipelines that ingest and process pricing and account data.
• Own REST and WebSocket API contracts (OpenAPI / AsyncAPI specs), ensure smooth data flow between frontend and backend, and maintain API documentation.
• Interact with on-chain data, index blockchain events, and bridge smart contracts with off-chain services.

Quality, Security & Collaboration

• Develop and maintain comprehensive unit, integration, and end-to-end tests across frontend and backend systems.
• Uphold continuous integration (CI) quality gates and rigorous code review standards.
• Work closely with cross-functional teams, including product, design, and quantitative specialists.

Location: Remote - Europe preferred, must be able to work European hoursRemote | Full-timeCompensation: $120K - $150KOur client is a dynamic, forward-thinking, fully remote organization with an ambitious roadmap and a strong commitmen...

Minimum Qualifications

• Experience: 6+ years of professional experience in fullstack software engineering.
• Core Tech Stack: Deep expertise in TypeScript across both frontend and backend development.
• Frontend: Strong experience with React and modern state management patterns (hooks, context, or equivalent).
• Backend & APIs: Experience building and consuming REST APIs and WebSocket real-time data protocols; proficiency with Node.js or Bun server-side runtimes.
• Databases & Caching: Experience with relational databases (PostgreSQL) and ORMs (Prisma or equivalent), along with familiarity with Redis or similar caching and pub/sub systems.
• Engineering Standards: Commitment to writing clean, maintainable code, backed by solid experience in unit, integration, and end-to-end testing methodologies.
• Communication: Clear and effective communication skills suitable for a fully remote, distributed, cross-functional team environment.

Preferred Qualifications

• Domain Experience: 8+ years of fullstack experience, ideally within fintech, trading platforms, or real-time data applications.
• Systems Languages: Experience with Rust or C++ for building high-scalability web services.
• Web3 Integration: Familiarity with the Web3 frontend stack (e.g., ethers.js, viem, client-side wallet integrations).
• Architecture: Knowledge of event-driven and messaging architectures (Kafka, Google Pub/Sub, or similar).
• Observability: Experience with observability tools such as Datadog, Prometheus, or Winston logging.

Ideal Profile

• Comfortable working in a agile, focused team navigating high complexity and evolving requirements.
• Motivated by the opportunity to shape modern financial technology infrastructure.
• Thrives in environments utilizing rapid prototyping and iterative development cycles.

Location: Remote - Europe preferred, must be able to work European hours

Remote | Full-time

Compensation: $120K - $150K

Our client is a dynamic, forward-thinking, fully remote organization with an ambitious roadmap and a strong commitment to engineering excellence.

Seeking a Senior Fullstack Engineer to work at the intersection of frontend and backend development. In this role, the engineer will build and maintain both a React-based trading user interface and the TypeScript backend services that power high-performance trading platforms. The position involves full feature ownership—from crafting responsive, real-time interfaces to designing the APIs, data pipelines, and indexing solutions that feed them.

The ideal candidate possesses a strong passion for trading, engineering rigor, security, and velocity, backed by over six years of professional experience and a dedication to code quality and state-of-the-art software testing practices.

Key Responsibilities

Frontend Development & Performance

• Build and maintain the React-based trading user interface.
• Implement dynamic, interactive interfaces for real-time data, including live order book updates, price feeds, and trade executions via WebSockets.
• Own component architecture, state management, and responsive design.
• Optimize rendering, minimize load times, and ensure smooth, low-latency interactions under heavy data loads.
• Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces.

Backend Development & Data Infrastructure

• Design and maintain TypeScript services, including REST APIs, WebSocket servers, and background services.
• Design and deliver event-driven pipelines that ingest and process pricing and account data.
• Own REST and WebSocket API contracts (OpenAPI / AsyncAPI specs), ensure smooth data flow between frontend and backend, and maintain API documentation.
• Interact with on-chain data, index blockchain events, and bridge smart contracts with off-chain services.

Quality, Security & Collaboration

• Develop and maintain comprehensive unit, integration, and end-to-end tests across frontend and backend systems.
• Uphold continuous integration (CI) quality gates and rigorous code review standards.
• Work closely with cross-functional teams, including product, design, and quantitative specialists.

Location: Remote - Europe preferred, must be able to work European hoursRemote | Full-timeCompensation: $120K - $150KOur client is a dynamic, forward-thinking, fully remote organization with an ambitious roadmap and a strong commitmen...

Minimum Qualifications

• Experience: 6+ years of professional experience in fullstack software engineering.
• Core Tech Stack: Deep expertise in TypeScript across both frontend and backend development.
• Frontend: Strong experience with React and modern state management patterns (hooks, context, or equivalent).
• Backend & APIs: Experience building and consuming REST APIs and WebSocket real-time data protocols; proficiency with Node.js or Bun server-side runtimes.
• Databases & Caching: Experience with relational databases (PostgreSQL) and ORMs (Prisma or equivalent), along with familiarity with Redis or similar caching and pub/sub systems.
• Engineering Standards: Commitment to writing clean, maintainable code, backed by solid experience in unit, integration, and end-to-end testing methodologies.
• Communication: Clear and effective communication skills suitable for a fully remote, distributed, cross-functional team environment.

Preferred Qualifications

• Domain Experience: 8+ years of fullstack experience, ideally within fintech, trading platforms, or real-time data applications.
• Systems Languages: Experience with Rust or C++ for building high-scalability web services.
• Web3 Integration: Familiarity with the Web3 frontend stack (e.g., ethers.js, viem, client-side wallet integrations).
• Architecture: Knowledge of event-driven and messaging architectures (Kafka, Google Pub/Sub, or similar).
• Observability: Experience with observability tools such as Datadog, Prometheus, or Winston logging.

Ideal Profile

• Comfortable working in a agile, focused team navigating high complexity and evolving requirements.
• Motivated by the opportunity to shape modern financial technology infrastructure.
• Thrives in environments utilizing rapid prototyping and iterative development cycles.