FinTech Full Stack Developer Job October 2025

As a Senior Full Stack Developer, you will be at the forefront of innovation, driving the development of our core platform. Your responsibilities will include:

• Developing and maintaining our advanced Next.js 15 web application with TypeScript, ensuring high performance and scalability.
• Crafting responsive, intuitive user interfaces for critical functions like portfolio management and AI agent configuration.
• Implementing sophisticated data visualizations to display real-time portfolio performance, latency, slippage, and fill quality.
• Ensuring a polished and consistent user experience across both desktop and mobile platforms.
• Collaborating closely with our design team to achieve pixel-perfect UI implementations using Tailwind CSS and Radix UI.
• Building and connecting robust APIs to our backend execution and receipts services.
• Integrating real-time data streams through WebSockets to provide immediate insights.
• Supporting the seamless integration of AI/ML models into user workflows.
• Working hand-in-hand with backend and DevOps engineers to guarantee data consistency, reliability, and system performance.

We are looking for a highly skilled and motivated individual with a proven track record. To excel in this role, you should possess:

• A minimum of 5 years of hands-on experience in full stack development.
• Frontend Expertise: Strong proficiency in React, Next.js, TypeScript, and Tailwind CSS.
• Backend Proficiency: Solid experience with Node.js (experience with Go is a significant plus).
• Database Skills: Familiarity with PostgreSQL and Redis.
• API & Real-time Data: Strong understanding and practical experience with REST APIs and WebSockets.
• Best Practices: A deep understanding of modern software engineering best practices, including testing, code reviews, and scalable architecture.

Desirable Qualifications:

• Prior experience with financial technology (FinTech), trading platforms, or the crypto space.
• Exceptional problem-solving abilities and a demonstrated capacity to deliver high-quality results in a dynamic startup environment.

To apply for this exciting Senior Full Stack Developer role at NICK AI, please click the “Apply Now” button below. In your application, highlight your extensive experience in full stack development, particularly with Next.js and Node.js, and any relevant experience in FinTech or crypto. We are eager to see how your skills and passion align with our mission to redefine investment decisions through AI.

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Q1: What is the employment type for this position?
A: This is a Contract employment position.

Q2: Is this a remote position?
A: Yes, this is a fully remote position, and we welcome applications from around the world.

Q3: What key technologies are central to this role?
A: Key technologies include Next.js, React, TypeScript, Tailwind CSS for frontend, and Node.js, PostgreSQL, Redis for backend, with a strong focus on REST APIs and WebSockets.

Q4: What is the application deadline?
A: The closing date for applications is November 19, 2025. We encourage you to apply promptly.

Q5: What level of experience is required for this role?
A: We are looking for a Senior Full Stack Developer with 5+ years of hands-on experience.