Senior Full-Stack JavaScript Developer

Duel Tech; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

A dynamic technology company in Greater London is seeking a motivated Full Stack JavaScript Developer to manage and enhance their SaaS platform. You will collaborate with the CTO and product team, ensuring high quality of code and offering mentorship. Extensive experience with Node.js, Angular, and AWS is required. Join a team that values innovation and community growth, while contributing significantly to a well-established product.

Qualifications

• Proven experience with testing methodologies (BDD and e2e testing).
• Extensive experience with Node.js and JavaScript.
• Meticulous attention to detail.

Responsibilities

• Manage and develop the SaaS platform.
• Provide technical support and mentorship to the team.
• Collaborate to design, develop, and test new features.

Skills

Fullstack development

Node.js

JavaScript

MongoDB

AWS

Angular

Git

E2E testing

Tools

Docker

Express.js

Job description

Salary: £60,000 - 90,000 per year

Requirements

• Meticulous attention to detail - you check things and check them twice
• Proven experience with testing methodologies (BDD and e2e testing)
• Extensive experience with Node.js and JavaScript - REQUIRED
• Extensive experience with MongoDB (or other document-based storage)
• Experienced with Angular (or similar)
• Experienced with Git (or similar version control)
• Experienced with AWS (or similar cloud based services)

Responsibilities

• THE ROLE
• Within this role, you will be focused on owning the responsibility of managing and developing or expansive SaaS platform. You will be in charge of ensuring that our client’s offerings are kept up to date and secure, as well as enhancing offerings moving forwards.
• Working closely with our CTO and the product pod to help develop a product that our Brand Partners can’t live without, you will also be expected to provide technical support for other members of the team, as well as mentor more junior members of the product team.
• Maintain high code quality and ensure responsiveness across our applications
• Be part of the whole development process, from prototype to production
• Collaborate with the rest of the team to design, develop and test new features
• Research technical requirements and bring problems and solutions to the table
• Mentor and nurture the next wave of junior tech talent as the team grows

Qualifications

• THE PERSON
• We’re after people who enjoy creating products and seeing them being used - able to help us ship features quickly and enjoy themselves while doing it!
• As a full-stack developer at Duel, you’ll be comfortable at different levels of the tech stack including frontend, APIs, backend, and databases. You have strong technical acumen, hands-on experience, a quick learner able to understand different technologies and assess their benefits and trade-offs.
• You take pride in producing and maintaining work to a high standard
• Sharing knowledge excites you - the thought of helping grow a team is something you’d like to get your teeth into
• Self-motivated with the ability to work independently - you’re also happy to get stuck in and support the team where needed
• Be a creative thinker able to recognize and solve problems by thinking outside the box
• Willingness to adopt new techniques and technologies and stay up to date with industry best practices
• You are committed to developing others as well as learning from them to expand your own knowledge, skills, and self-awareness
• Coaching colleagues, sharing knowledge and promoting best practices, including writing technical documentation
• Technologies:
  • AWS
  • Angular
  • Backend
  • Cloud
  • Docker
  • E2E
  • Frontend
  • Git
  • JavaScript
  • Linux
  • Marketing
  • MongoDB
  • REST
  • Security
  • NodeJS
  • ExpressJS
  • Fullstack

More :

Are you a senior developer looking for a new challenge?

We’re looking for a motivated and talented Full Stack Javascript Developer / Software Engineer to join our incredible development team. You are going to be a vital member of our team and will play a massive role in contributing ideas to the product, as well as helping mentor and nurture our internal talent as our SaaS company continues to rocket into 2022.

Our infrastructure is built around the MEAN stack (MongoDB, Express.js, Angular and Node.js) all hosted on AWS, and we’re looking for someone with the practical experience and creative ambition to jump right in and help us further expand on a well-established product that we are proud of.

THE BUSINESS

Duel was founded by world-record-breaking adventurer and former brand ambassador Paul Archer, alongside viral games developer Naio Tsarouchis. They set out to develop both the technology and methodology that enables purpose-led brands to drive organic growth, powered by communities of advocates.

Duel’s Brand Advocacy Platform allows brands to do just that - scaling how they manage their relationships with thousands of advocates. This unprecedented ability to manage their communities is built around programs that engage and retain customers, accelerating word-of-mouth sales.

The Duel team is made up of psychologists, brand experts and community builders from companies including Amazon and Lululemon. The platform is used by brands such as Monica Vinader, Frugi, Rab, KUHL and Tropicfeel, and the team has consulted for over 450 brands including Amex, Travelex, M&S, Philips, Boots, Schuh and TopShop.

The Duel team is also especially proud of being featured in Gartner’s ‘Cool Vendor’ Retail Marketing category.

last updated 49 week of 2025