Senior Fullstack Developer

6 days ago

London, Greater London, United Kingdom Freshtechit Full time €45,000 - €80,000 per year

A fast-growing fintech company is hiring a Fullstack Developer(AI) to help build the next generation of intelligent, personalized financial platforms. This role blends modern front-end engineering with AI-powered workflows, automation, and human-centered design to deliver seamless digital experiences for users across global markets.

You'll join a lean, high-impact product and engineering team where autonomy, creativity, and rapid iteration are core to how we work. We use AI as a force multiplier-amplifying human creativity, streamlining development, and unlocking new possibilities in financial technology.

Responsibilities

  • Collaborate with design, backend, and data teams to deliver adaptive, scalable web experiences.
  • Optimize personalization and tracking systems while ensuring accessibility, privacy, and security compliance.
  • Scout and implement AI-driven tools to enhance development workflows and user experience.
  • Maintain performant front-end foundations using React, TypeScript/JavaScript, CSS, and AWS Amplify.
  • Work with headless CMS platforms to deliver content compatible with AI workflows.
  • Break down complex projects into agile deliverables and contribute to technical documentation.

Requirements

  • Strong front-end engineering skills (React, TypeScript/JavaScript, CSS, responsive design).
  • Experience with AI-enhanced development tools (e.g., AI code assistants, automated testing, intelligent pipelines).
  • Familiarity with headless CMS platforms and web content workflows.
  • Understanding of web analytics, personalization frameworks, and tracking methodologies.
  • Experience with cloud platforms (AWS Amplify or similar), CI/CD pipelines, and feature flagging.
  • Knowledge of REST and GraphQL API design patterns.
  • Excellent communication and collaboration skills.
  • A keen design sensibility and commitment to secure coding practices.

Bonus Points

  • Experience integrating LLMs into development workflows (prompt engineering, context management, orchestration).
  • Familiarity with MCP or similar standards for managing model interactions and tooling integration.
  • Knowledge of A/B testing and automated UX optimization.
  • Contributions to open-source projects in automation, AI, or web engineering.

  • Fullstack Developer

    4 days ago

    London, Greater London, United Kingdom Hays Full time £104,000 - £1,705,000 per year

    Fullstack Developer - Active SCLondon / Remote (Must be UK based)Up to £425 per day (Inside IR35)3 monthsMy client is an instantly recognisable consultancy who require a Fullstack Developer with Active SC Clearance.Key Requirements:Proven commercial experience working as a Fullstack Developer with Active SC Clearance.Strong understanding of Frontend...

  • GenAi Fullstack Developer

    1 week ago

    London, Greater London, United Kingdom Stealth iT Consulting Full time £80,000 - £96,000 per year

    Lead Fullstack GenAI Developer (Python/GenAI/LLM)Hybrid Remote (Manchester, London, or Glasgow HQ)Up to £88k + £8kGlobal Consultancy ClientAre you a talented Fullstack Developer with a passion for Generative AI (GenAI) and looking for an exciting opportunity to grow within an innovative global consultancy? We're seeking a skilled Fullstack GenAI Developer...

  • Senior Fullstack Engineer

    5 days ago

    London, Greater London, United Kingdom CarbonChain Full time £60,000 - £120,000 per year

    About UsDo you want to work on the most pressing problem of our generation? Do you have experience building great products and know what it's like to roll up your sleeves and execute well, while building a company around you for the long term? If you truly know what it feels like to fly the plane while trying to build it, we want to hear from you. We're...

  • Senior Fullstack Engineer

    2 weeks ago

    London, Greater London, United Kingdom Ebury Full time £60,000 - £120,000 per year

    Ebury is a global fintech firm dedicated to empowering businesses to expand internationally through tailored and forward-thinking financial solutions. Since our founding in 2009, we've grown to a diverse team of over 1,700 professionals across 40+ offices and 29+ markets worldwide. Joining Ebury means becoming part of a collaborative and innovative...

  • Fullstack Developer

    2 weeks ago

    London, Greater London, United Kingdom Freshtechit Full time £60,000 - £120,000 per year

    A fast-growing fintech company is hiring a Fullstack Developer to help build the next generation of intelligent, personalized financial platforms. This role blends modern front-end engineering with AI-powered workflows, automation, and human-centered design to deliver seamless digital experiences for users across global markets.You'll join a lean,...

  • Fullstack Developer

    1 week ago

    London, Greater London, United Kingdom Track24 Full time £60,000 - £85,000 per year

    AtlasNXT, our flagship platform empowers organisations worldwide to make smart, resilient decisions in real time. For 20+ years we've supported industries from national security and logistics to media, NGOs, and healthcare. Now, we're looking for a Fullstack Javascript Developer to help us grow and scale further.We are looking for an experienced JavaScript...

  • Fullstack Developer

    6 days ago

    London, Greater London, United Kingdom Free-Work UK Full time £30,000 - £50,000 per year

    Our client is looking for two fullstack developers to join the team. You will have experience of delivery services at scale using JavaScript/HTML, , Spring Boot, REST APIs and event driven integrations on AWS.Technical SkillsFront end: JavaScript, HTML; responsive UI patterns and web standards.Back end: and Spring Boot microservices; RESTful API design and...

  • Senior Fullstack Engineer

    5 days ago

    London, Greater London, United Kingdom Lavanda Ventures Ltd. Full time £60,000 - £120,000 per year

    The CompanyLavanda is a B2B software company. We've developed an award-winning, best-in-class SaaS platform that enables Multifamily and Student accommodation operators to optimise their portfolios with a comprehensive short and medium-term rental solution.Our software toolkit enables partners to tap into the full spectrum of rental demand across their...

  • Senior Fullstack Engineer

    2 weeks ago

    London, Greater London, United Kingdom Zelt Full time £60,000 - £120,000 per year

    About ZeltZelt is on a mission to rebuild how organisations run. Our all-in-one platform helps modern companies manage their people across payroll, onboarding, time off, IT provisioning and more, in a seamless and automated way.We are the only platform on G2 named a Global Momentum Leader across HR, Payroll and IT, and we are just getting started. Our...

  • Fullstack Engineer

    3 days ago

    London, Greater London, United Kingdom Zelt Full time £60,000 - £120,000 per year

    About ZeltZelt is on a mission to rebuild how organisations run. Our all-in-one platform helps modern companies manage their people operations across payroll, onboarding, time off, IT provisioning and more, in a seamless and automated way.We are the only platform on G2 named a Global Momentum Leader across HR, Payroll and IT, and we are just getting started....