Senior Fullstack Java Developer

Company: Nexus Jobs
Apply for the Senior Fullstack Java Developer
Location: London
Job Description:

Overview

In this role you lead the technical execution for a fintech-focused product, driving fast iterative development in an Agile environment. You work across iOS, Android and web platforms to deliver a high-performance app. You will coordinate design, coding and deployment, collaborating with partners and cross-functional teams. This is a hands-on leadership position with a strong emphasis on code quality, architecture, and continuous improvement.

Responsibilities

  • Lead the technical arm of the team in fast iteration cycles and tight deadlines using agile/scrum
  • Coordinate coding, development and documentation across the full project life cycle
  • Participate in architecture discussions with external finance-sector partners
  • Collaborate with cross-functional teams to translate business requirements into robust software
  • Drive best practices and continuous improvement to products, processes and tools
  • Identify bottlenecks, fix production bugs and support post-launch operations
  • Liaise with product development to plan new features and explore new mobile products

Key requirements

  • 5 to 7 years of native mobile and web app development experience
  • Proficiency in React, Swift or Objective C, Java; Rails, Node.js and Angular for web
  • Demonstrable portfolio of released web and mobile apps
  • Experience with multi-threaded client software and client-server architecture
  • Familiarity with SDLC and Agile methodologies
  • Development tools (Xcode, Android Studio, Eclipse) and source control tools (Git, Stash)
  • Knowledge of FIX Protocol is a plus
  • Ability to work effectively in a team environment
  • problem solving
  • communication
  • cross-functional collaboration
  • React
  • Swift or Objective-C
  • Java

Posted: September 23rd, 2026