frog - Senior Full Stack Engineer

CAPGEMINI ENGINEERING
London
Why Join frog

Since June 2021, frog is part of Capgemini Invent. frog partners with customer-centric enterprises to drive sustainable growth, by building and orchestrating experiences at scale, while harnessing the power of data and technology. We're inventing the future of customer experiences by delivering market-defining business models, products, services, brand engagements and communications.

Joining frog means you'll be joining the "pond," a global network of studios, each with a thriving in-person and vibrant virtual culture. frogs are curious, collaborative, and courageous, united by our passion for improving the human experience across our areas of expertise, while each bringing our unique and diverse skills and experiences to the table. We draw on our global reach and local knowledge to solve complex problems and create innovative, sustainable solutions that touch hearts and move markets. frogs prize humour, positivity, and community just as highly as performance and outcomes. Our culture is open, flexible, inclusive, and engaging. Working at frog means being empowered to meet the moment, and Make Your Mark on every project, in your studio, your community-and the world at large.

What You'll Be Doing

As part of our global frog technology community, you will have the chance to contribute to our Technology strategy, helping to evolve and broaden the solutions that we provide to our clients as well as influencing our strategic technology choices. And we're one of the few consultancies delivering products to the market!

This is a multi-faceted role. It is as much about developing software as it is learning and developing your skills and those of the teams around you. Our environment is flexible, collaborative and varied in the projects we do - we aim for this to be the place where you can do your best work across the telecoms, banking, travel, utilities, and many other industries.

An Overview of the Role

As an experienced Senior Full Stack Engineer, you will work within all aspects of solution development, including the overall design and architecture of the technical solution, implementation patterns and code quality, CI/CD pipelines and Cloud infrastructure. You will have the opportunity to work across all stages of the product life cycle: from inception to proof of concept, to full build and test, launching in market, and operating at scale. The scope of our work and sectors is also varied, ranging from building entire ventures to creating brand new online experiences, mobile apps, to creating more experimental 3D immersive experiences for some of the biggest players across the telecoms, banking, travel, utilities, and many other industries.

What We Look For

  • Demonstrate understanding and experience of delivering beautiful modern digital architectures, including JAMstack and modern headless JavaScript applications.
  • Work to deliver web UIs & 3D immersive experiences within a multi-disciplinary team alongside Designers, Product Managers, QA and Ops.
  • Actively and confidently participate in sessions and workshops alongside client teams and stakeholders.
  • Identify and implement improvements to the way we work, with the instinct to recognise when something isn't working.
  • Help improve the development and automation processes for build and release of software.
  • A strong background in JavaScript (ES6 & TypeScript), DOM scripting, Node.js.
  • Experience in testing JavaScript code and React component (e.g. Jest, Cypress).
  • Experience with modern, CSS(3) styling and layout (framework agnostic) including working with CSS preprocessors and/or CSS-in-JS.
  • Built, deployed and run Node.js applications and services in production.
  • Experience integrating with external APIs using REST and/or GraphQL.
  • Awareness of tooling for UI development, such as Figma, Sketch, Invision etc.
  • Experience building & shipping production-grade immersive experiences in engines, such as Unreal or Unity.
  • An eye for detail and passion to make what we create shine. Our products have got to be functionally correct, look great, and be a great experience for people to use.
  • A passion for helping to create and maintain an environment where people can do great work and learn new skills.
We understand that a 'need to tick every box' can get in the way of meeting excellent candidates, so if you think you could be good fit, please don't hesitate to apply - we'd love to hear from you.

It Would Be a Bonus If You Had

Bonus points if you have any of the following:

  • Awareness of OWASP secure coding practices, and browser security.
  • Comfort in advocating DevOps concepts and have experience with tools and technologies that make them possible - CI/CD.
  • Hands-on experience with SQL, NoSQL databases, or productised options, like Firebase, or Couchbase.
  • Experience creating AR/VR experiences.
  • Experience with 3D Design tools such as Blender.
  • High level understanding of the marketing technology cloud native offerings, common SaaS platforms in the market (e.g. Headless SaaS CMSs, Static Site Generators).
Application Instructions

Please ensure a link to your portfolio of work is included on your CV and any passwords required are included.

frog is a global business with teams working from every corner of the world. To help us process your application, please ensure that your application documents (CV, cover letter, portfolio, etc.) are all in English.

Need to Know

We don't just believe in inclusion, we actively go out to making it a working reality. Driven by our core values and Inclusive Futures for All campaign, we build environments where you can bring you whole self to work.

We aim to build an environment where employees can enjoy a positive work-life balance. We embed hybrid working in all that we do and make flexible working arrangements the day-to-day reality for our people. All UK employees are eligible to request flexible working arrangements.

Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions. To help support wellbeing we have trained 'Mental Health Champions' across each of our business areas. We have also invested in wellbeing apps such as Thrive and Peppy

CSR

We're also focused on using tech to have a positive social impact. So, we're working to reduce our own carbon footprint and improve everyone's access to a digital world. It's something we're really serious about. In fact, we were even named as one of the world's most ethical companies by the Ethisphere Institute for the 10th year. When you join Capgemini, you'll join a team that does the right thing.

Whilst you will have London as an office base location, you must be fully flexible in terms of assignment location, as these roles may involve periods of time away from home at short notice.

We offer a remuneration package which includes flexible benefits options for you to choose to suit your own personal circumstances and a variable element dependent grade and on company and personal performance.

About Capgemini Invent

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2023 global revenues of €22.5 billion.

More information is at available at:
Posted 2025-06-07

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