Senior Fullstack Engineer, Cross-platform

Welltech
Bulgaria, Romania, Hungary, Lithuania, Armenia, Estonia, Latvia
Workplace: RemoteFull timeFunction: Software EngineeringSkills: ["React Native","TypeScript","CI/CD","Node.js","HLS","AVPlayer","ExoPlayer","Web","Mobile","BFF","AI"]

Senior Fullstack Engineer responsible for building and evolving a cross-platform foundation across mobile, web, BFF, and infrastructure with an AI-first approach. Own end-to-end stack from architecture to deployment, collaborate with product/design/marketing, and drive AI-assisted workflows to accelerate delivery and impact for wellness apps like Muscle Booster, Yoga-Go, and WalkFit.

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FursaFursa
Welltech
Welltech
2 months ago

Senior Fullstack Engineer, Cross-platform

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Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Live

Job Summary

Senior Fullstack Engineer responsible for building and evolving a cross-platform foundation across mobile, web, BFF, and infrastructure with an AI-first approach. Own end-to-end stack from architecture to deployment, collaborate with product/design/marketing, and drive AI-assisted workflows to accelerate delivery and impact for wellness apps like Muscle Booster, Yoga-Go, and WalkFit.
Location: Bulgaria, Romania, Hungary, Lithuania, Armenia, Estonia, Latvia
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Build and evolve a cross-platform ecosystem covering mobile, web, BFF, and infrastructure layers using an AI-first, agentic development approach
  • •Design scalable foundations for health & fitness applications powered by React Native and modern web technologies
  • •Work directly with product, design, and marketing stakeholders to rapidly translate business needs into scalable technical solutions and experiments
  • •Develop and continuously improve AI-agentic workflows across the full development lifecycle to increase team productivity, code quality, and delivery speed
  • •Develop shared platform capabilities, internal tooling, CI/CD pipelines, and AI-assisted workflows that improve development speed and product quality

Key Requirements

  • •Strong commercial experience with React Native and modern TypeScript-based application development
  • •Solid understanding of full-stack architecture including mobile, web, BFF, and cloud/infrastructure layers
  • •Experience building scalable cross-platform systems and shared application foundations
  • •Deep understanding of software architecture, modular systems, scalability, and performance optimization
  • •Experience working with CI/CD pipelines, automation tooling, and modern developer workflows
Experience:WellnessSaaS
Skills:React NativeTypeScriptCI/CDNode.jsHLSAVPlayerExoPlayerWebMobileBFFAI
Tech Stack:React NativeTypeScriptCI/CDNode.jsHLSAVPlayerExoPlayer

Company Brief

Welltech
Develops digital wellbeing and health technology solutions aimed at improving employee and consumer wellness through software platforms, monitoring tools, and personalized health programs integrated with corporate wellbeing initiatives.
Industry: Wellness & Preventive Health
Website