Senior Full Stack Developer

Role Overview:

We are seeking experienced Senior Full Stack Developers to join our engineering team. You will work on a sophisticated financial technology platform built with modern web technologies, contributing to both frontend and backend development. This role offers the opportunity to work with cutting-edge technologies including

blockchain integration, cloud infrastructure, and enterprise-grade financial systems.

Key Responsibilities:

• Design, develop, and maintain full-stack features across our platform ecosystem
• Build scalable backend services using NestJS with clean architecture principles
• Develop responsive and performant frontend applications using and React
• Work with PostgreSQL databases and Prisma ORM for data modeling and persistence
• Collaborate with cross-functional teams to deliver high-quality software solutions
• Write clean, maintainable, and well-tested code with comprehensive test coverage
• Participate in code reviews and contribute to technical architecture decisions
• Optimize application performance and ensure security best practices
• Debug and resolve complex technical issues across the stack
• Contribute to API design and implementation following RESTful principles

Technical Stack:

Backend

• Framework: NestJS )
• Database: PostgreSQL
• ORM: Prisma
• Testing: Jest, Supertest

Frontend

• Framework:
• Language: TypeScript
• Styling: TailwindCSS

Infrastructure & DevOps

• Cloud Platform: AWS (S3, etc.)
• Build System: Nx Monorepo
• Containerization: Docker
• Version Control: Git

Required Qualifications

• 7+ years of professional software development experience
• Strong expertise in TypeScript and modern JavaScript (ES6+)
• Proven experience building production applications with React and
• Deep understanding of RESTful API design and implementation
• Strong knowledge of relational databases and SQL
• Experience with modern frontend frameworks , React)
• Experience with backend frameworks (NestJS, Express, or similar)
• Solid understanding of software design patterns and clean architecture
• Experience with Git version control and collaborative development workflows
• Strong problem-solving skills and attention to detail
• Excellent communication skills and ability to work in a team environment
• Experience with testing frameworks and writing comprehensive tests
• Understanding of security best practices for web applications
• Fluent in English

Nice to Have

• Experience with blockchain technologies and smart contracts
• Background in financial technology or regulated industries
• Experience with monorepo architectures (Nx, Turborepo, etc.)
• Knowledge of DevOps practices and CI/CD pipelines
• Experience with cloud platforms (AWS, Azure, GCP)
• Familiarity with microservices architecture
• Knowledge of compliance requirements (KYC/AML)
• Contributions to open-source projects
• German language skills

What We Offer

• Opportunity to work on innovative financial technology solutions
• Collaborative and professional work environment
• Hybrid work arrangement with flexible scheduling
• Modern technology stack and best practices
• Continuous learning and professional development opportunities
• Challenging technical problems in the fintech domain
• Direct impact on product development and architecture decisions

Application Process

• Please submit your application including:
• Current CV/Resume
• Cover letter highlighting relevant experience
• Links to GitHub profile or portfolio (if available)
• Any relevant certifications or projects

We are looking to fill multiple positions and welcome applications from qualified candidates at various experience levels within the senior range.

Finyoz is committed to creating a diverse and inclusive workplace. We welcome applications from all qualified candidates regardless of background.

Please send you application to