Senior Frontend Developer – UI/UX

Work Life Group

Senior Frontend Developer (UI/UX) for NATO developing real-time data analytics dashboards. Collaborating within an Agile team to create interactive interfaces for military decision making.

Posted 5/26/2026full-timeRemote • 🇧🇬 BulgariaSeniorWebsite

Tech Stack

Tools & technologies

AngularD3.jsGraphQLJavaScriptMaterial UIPythonReactTypeScriptVue.js

About the role

Key responsibilities & impact

build a responsive, web-based real-time data analytics dashboard
lead the front-end development of the Mission Engineering decision support layer
implement architecture capable of handling continuous, low-latency data streams
transform data outputs into highly interactive interfaces that enable military commanders to monitor evolution of mission performance indicators, receive alerts and act upon those alerts
focus strictly on client-side performance, state management, and interface fidelity
work within an Agile team under the guidance of the Mission Engineering project lead
translate provided UI/UX designs and data visualizations into production-grade frontend code
uphold great standards of rendering speed, data security and interface reliability
participate in code reviews, contribute to architectural discussions
proactively flag technical risks or impediments to the team lead and project management.
take full responsibility for the frontend features and user interactions delivered, from technical design and client-side logic through implementation, end-to-end testing, and deployment.

Requirements

What you’ll need

proficiency in modern UI ecosystems; clean, idiomatic code utilizing type safety (TypeScript) and asynchronous state management.
experience with modern frontend frameworks (React, Vue, or Angular); and/or capability with Python-based dashboarding ecosystems like Python Dash / Plotly or Streamlit.
advanced skills in modular, reusable, UI design patterns; experience extending complex UI component libraries (Tailwind UI, Material UI).
client-side rendering optimization, lazy loading, code-splitting, bundle size minimization, and efficient DOM management for complex UI renderings.
expertise with advanced data visualization libraries (Plotly.js, D3.js, Recharts, or Chart.js) to build high-performance charts, trends and multi-dimensional analytics matrices.
implementation of complex client-side workflows including interactive legends, synchronized cross-filtering across charts, coordinated tooltips, and real-time state updates.
ability to optimize data visualization components to handle rapid, continuous data updates without causing UI lag, memory leaks, or browser lag.
consuming RESTful or GraphQL APIs; resource modeling on the client, managing paginated data subsets, error boundaries, and loading states.
parsing complex JSON payloads, working with frontend validation schemas to ensure UI stability against fluctuating backend data structures.
experience using WebSockets, Server-Sent Events (SSE), or short-polling strategies to stream real-time operational metrics onto the analytical interface.
comprehensive UI testing strategies including unit testing and component testing.
integration with automation pipelines, enforcement of automated code linting, syntax checking, and static builds.
advanced Git workflows
automated enforcement of static code checking, UI review protocols, and living technical documentation.
OWASP Top 10 awareness, input validation, output encoding, secrets management.
management of Cross-Origin Resource Sharing (CORS) configurations, Content Security Policies (CSP), and secure browser storage.
ability to translate functional UI mockups and design specifications (ranging from wireframes to dedicated design assets) into clean, working application layouts.
active participation in sprint ceremonies, backlog refinement, estimation, and retrospectives.
clear reporting of progress and blockers; collaboration with architects, front-end developers, QA, DevOps, and UX designers.
Excellent written and spoken English in a professional/international context.

Benefits

Comp & perks

Professional development opportunities

ATS Keywords

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Hard Skills & Tools

TypeScriptReactVueAngularPython DashPlotlyStreamlitPlotly.jsD3.jsChart.js

Soft Skills

leadershipcommunicationcollaborationproblem-solvingresponsibilityproactivityreportingparticipation in sprint ceremoniesclient-side performance focustechnical design