Full Stack Engineers

Job Description

MastarRec is hiring a Full Stack Engineer – FinTech to support innovative financial technology platforms operating across the United States, building modern web applications and scalable cloud-based platforms.

You will be responsible for developing and maintaining server-side logic, RESTful APIs, and end-to-end solutions using Node.js, React, and modern JavaScript/TypeScript frameworks.

This is an opportunity to contribute to high-impact digital products in sectors such as FinTech, Healthcare Technology, and SaaS, within a fast-moving, innovation-driven environment that values clean code, collaboration, and technical excellence.

Experience

3–5+ years of experience in software development, with a strong focus on full-stack engineering.

Job Responsibilities

• Collaborate with frontend engineers to integrate seamless, performant user interfaces using React.js or similar libraries.
  
• Write clean, maintainable, and well-tested code aligned with modern software engineering best practices.
  
• Work cross-functionally with Product, Design, and QA teams to deliver high-quality features.
  
• Optimize system performance, troubleshoot production issues, and participate in code reviews.
  
• Design, build, and maintain scalable server-side applications and RESTful APIs using Node.js, Express, or similar frameworks.
  
• Contribute to architecture discussions, and refactor or modernize legacy systems when necessary.
  

Requirements

Required Skills

• Strong hands-on experience with Node.js, Express, and API development.
  
• Proficiency in JavaScript and TypeScript.
  
• Solid understanding of SQL and NoSQL databases (e.g., PostgreSQL, MongoDB).
  
• Experience with CI/CD pipelines and containerization (Docker).
  
• Familiarity with RESTful or GraphQL API design and integration.
  
• Proficient with version control systems such as Git and GitHub.
  

Desired Skills

• Frontend development experience using React.js, Next.js, or similar frameworks.
  
• Experience deploying and scaling applications in cloud environments (AWS, Azure, GCP).
  
• Knowledge of microservices architecture and distributed systems.
  
• Familiarity with Agile development methodologies and Test-Driven Development (TDD).
  
• Prior experience in FinTech, Healthcare, or SaaS product development is a plus.
  

Benefits

Job Benefits

• Competitive salary with performance bonuses
  
• Private health insurance and wellness support
  
• Learning & development allowance for certifications and upskilling
  
• Potential equity / stock options (depending on client)
  
• Collaborative, growth-oriented engineering culture
  
• Access to modern tech stack and cutting-edge tools