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Senior Fullstack Developer ( REACT FE / TYPE SCRIPT BE)

Duration - 6 months with auto-renewal. 
Working Hours - 40 hours/week  
Employment Type - Partner Agreement (B2B) 

Castille Labs is looking for a Senior Fullstack Developer, for a client in the Wealth Management Sector. Our client works with a stack of microservices written primarily in Scala, Kotlin, Javascript and Python that operates on AWS, coordinate in Kubernetes, transmits via Kafka & into Cassandra, MongoDB, and Postgres database. 
You will be exposed to a variety of concepts and technologies. 


  • Build efficient and scalable solutions for clients.  

  • Work with the product, business and sales team to understand requirements and produce high-quality results.  

  • Design solutions to handle high levels of traffic. 

  • Write high quality, testable, and maintainable code that can be confidently released in production. 

  • Participate Code in a collaborative, agile environment developing many new features. 

  • Write well-tested, clean code and review other team members’ contributions. 


  • Bachelor degree in Computer Science, Engineering or related field. 

  • 5+ years of experience creating web applications. 

  • Strong experience with JavaScript and HTML/CSS 

  • Experience with React is a plus. 

  • Strong background in data structures and algorithms. 

  • Familiar with agile processes, testing and continuous integration. 

  • Past work experience working on a finance environment. 

What to expect when you apply: 

  • One to One Chat/Video call, with an HC member 

  • An average of 1 hour Code Challenge. Done Offline with a pass mark of 80%+ 

  • Support from a dedicated Human Capital member to be part of our Global Platform and support you along your career journey!